USRE19805E - Elevator - Google Patents

Description

C. E. ELLIS. JR

Jan. 7, 1936.

ELEVATOR l Original Filed Nov. 25, 1932 5 Sheets-Sheet l "mwah, 1 u

Jan. 7, 1936. c. E. ELLIS, JR Re 19,805

ELEvAToR Y Original Filed Nov. 25, 1932 3 Sheets-Sheet 2 (5M Nvvw., raf/Vix Jan. 7, 1936. Q E, ELUS, JR Re. 19,805

ELEVATOH Original Filed Nov. 25, 1932 3 Sheets-Sheet 3 uw@ am? Ressued Jan. 7, 1936 UNITED STATES PATENT OFFICE ELEVATOB Charles E. Ellis, Jr., Mahwah, N. J., assignor to Westinghouse Electric Elevator Company, Chicago, Ill., a corporation oi Illinois original No. 1,919,619. ima November s. 1934.

Serial No. 644.176, November 25. 1932. Application for reissue March 8, 1935, Serial No. 10,062

34 Claims.

My invention relates to elevators and more particularly to the construction and operation of auxiliary apparatus for elevators such as door selectors. position indicators, etc.

One object o! my invention is to provide a means for driving elevator auxiliary apparatus in step-by-step motion. in accordance with the movements of the elevator car. whereby the auxiliary apparatus may be located in any desired position, either in the pent-house or on the car.

Another object is to provide for so driving a licor selector that the contact segments thereon may be spaced apart any desirable uniiorm distance without regard to, and independent of. the

is distance between the noors served by the car.

A further object is to provide for so construcing and driving the floor selectors utilized in tall buildings that their contacts segments may be mounted upon a plurality of side-by-side panels 0 to permit ready and convenient installation of the selectors in rooms having rather low ceilings.

It is also an obiect to provide a means for operating the iloor selectors and position indicators which will. if it moves out of its correct position. automatically reset itself at either terminal to insure its accurate operation.

Other objects oi' the invention will be obvious or become evident trom the following description taken in conjunction with the accompanying drawings. in which: a

Figure 1 is a diagrammatic representation ot an elevator installation embodying my invention;

Fig. 2 is a view. in front elevation, ol' the floor selector included in the elevator system illustrated in Pig. l:

Fig. 3 is an enlarged view, in iront elevation. of a modified form oi the noor selector shown in FII. 3i

Fig. 4 is an enlarged view, in iront elevation. of a further modiiication of the door selector shown in Fig. 2:

Fig. 5 is a diagrammatic representation of the control system provided for operating the door selector associated with the elevator shown in Fig. l: and

Fig. 6 is a diagrammatic representation of a modified i'orm of the control system shown in Fig. 5. for operating the iloor selector illustrated in Fis. 3.

Although the driving means included in my invention may be conveniently employed for operating the various forms oi' auxiliary apparatus as requires movement in accordance with the movement oi the car, I have illustrated it, tor ex- (Cl. IS7-29) planatory purposes, as employed for operating a iloor selector.

Referring more particularly to Fig. 1 of the drawings, I have illustrated therein an elevator car C as suitably suspended upon a cable Ca in 5 a hatchway s. The cable passes over a hoisting drum D to a suitable counterweight Cw. The hoisting drum D is directly coupled to the armature EM' of a hoisting motor EM (ses Pig. 5) the field winding EMF of which is connected for 10 constant voltage energization, to a pair of supply conductors LI and L2 which may be connected to a .suitable source of supply by a switch K.

A variable voltage system of control may be provided i'or operating a hoisting motor EM l5 wherein the armature EM' of the hoisting motor is connected in loop-circuit with the armature G' of the generator G. The generator G is provided with a separately excited field winding GF.

The armature G' of the generator G is suitably driven by means oi a driving motor DM. which may be connected to a suitable source of supply by means oi a switch Kl.

The direction and speed of the hoisting motor EM may be suitably controlled by controlling the direction and value oi' the excitation current that is supplied to the separately excited tleld winding GF of the generator G.

The direction of the excitation current for the neld winding GF may be suitably controlled by means of an up-dlrectlon switch i and a downdirection switch 2.

The value of the current supplied to the eld winding may be controlled by any one ot the wellknown suitable means (not shown).

The operation of the up-direction and the down-direction switches i and 2 may be controlled by means of a car switch CS mounted uponthecarcinpositiontobeactuatedbyan attendant thereon. Y

A signal lamp SL is disposed within the car by means o! which signals may be given to the car attendant to stop the car at the floor landings.

Two signal registering push-buttons PB are mounted at each oi the landings intermediate the terminal iloors. one for up travel and one for down travel, in order that waiting passengers at a floor landing may register signals for stops to be made at that landing which will cause the signal lamp SL in the car to give the attendant on the car a stop signal as the car approaches that landing.

A plurality oi push-buttons CB (one for each lloor) are mounted in the car C to be operated by the car attendant when he desires to prepare the 55 signal lamp SL to indicate stops to permit passengers to get od at corresponding doors.

A position indicator iii is disposed in the car to keep .the passengers and the car attendant informed as to the position oi the car relative to the doors past which it operates.

In order that the various circuits for the pushbuttons, the signal lamp, the position indicator and the control circuits indicated by the wiring cables ii, i2 and i3 may be connected in accordance with the position ot the car. the car is provided with a door selector FS. The door selector may be located at any suitable point. ior example, in the pent-house or the elevator shaft and, as illustrated. is, in general. similar to those usually employed in elevator systems. Since the manner oi' connecting the door lanterns. hall and car push-buttons. and position indicator to the door selector is well known. such connections have been omitted i'rom the drawings in the interest oi' clarity.

As shown in Figs. l and 2. the door selector PS comprises a stationary irame Il the front portion of which supports a plurality of stationary contact segments il disposed to cooperate with and be engaged by a plurality of contact brushes Il supported and operated by a movable member such as a brush carriage i1. The carriage i1 is slidably disposed between a pair oi track rails il and il in such manner that it may be moved up and down by a chain 2l to one end of which it is attached. The other end of the chain passes over a sprocket wheel 2i to a counterweight 2! which serves to balance the weight oi' the brush carriage when the selector is in operation. The sprocket wheel is operated by an electric motor 23 through reduction gearing 2l. and a friction clutch arranged to slip at a predetermined driving torque. Operation of the motor moves the carriage i1 up and down and thereby causes the dngers to pass over and make engagement with the contact segments.

'lhe contact segments il and the contact brushes i are so connected to the conductors ior the circuits oi' the push-buttons. the signal lamp. the car control. the indicator, etc.. that the up and-down movement of the carriage connects these circuits in accordance with the position of the car with reference to the doors served. 'Ihe conductors connected to the brushes Il are grouped in cables 21 and Il and extend in a loon from the carriage il to a supporting bracket l disposed on the central portion o! the selector. This permits the ends oi' the cables to readily follow the movements of the carriage over the contact segments without adding additional weight to the carriage.

Heretofore in constructing motor operated door selectors, it has been necessary to space the contact segments on the selector such a distance apart in a vertical line as would correspond exactly to the distance between the doors: that is. if the drst and second doors were farther apart than the second and third doors. the contact segments corresponding to the drst and second doors would have to be placed farther apart on the selector than those for the second and third doors. This spacing had to be followed so that when the brush carriage was moved in accordance with the movement oi' the car, the brushes would be moved to and engage the segments corresponding to the door at which the car was positioned.

In order to avoid this necessity of spacing the contact segments in exact correspondence to the distance between the doors. I have provided l :n.sos

novels selector operating means as illustrated in Fig.

As shown in Fig. 5. the selector motor 23 is operated by a device such as an inductor relay IR disposed in the car to cooperate with a plus rality of devices such as induction plates disposed in the hatchway and by a plurality o! contact segments and brushes on a portion of the door selector (as represented by the dotted enclosure ila). l0

The relay 1R operates to start the motor each time the car approaches a door and the bnishes and contact segments operate to stop the motor after it has travelled a predetermined distance. thereby causing the brush carriage to be moved l an equal distance and then stop each time the car arrives at a door regardless of the distance between the doors.

Inasmuch as the carriage moves an equal distance each time the car arrives at a door. it is apparent that the contact segments on the selector may be placed an equal distance apart regardless of the distance between the doors.

Similarly. in buildings having long express zones through which the car moves without stop- 2s ping. such zones may be treated as only one door in the design oi the door selector, thereby materially reducing the size of the selector.

Ihe inductor relay 1R is provided with a suitable coil Il which is connected for constant energizatlon to the supply conductor Li and L2. The relay is also provided with two switch arms carrying. respectively. contact members IRI and IRI. The switch arm associated with contact members IRI is so disposed as to be successively operated by a plurality of inductor plates ll, n and ll, and the arm associated with contact members IRI is so disposed as to be successively operat'ed by a plurality oi' inductor plates Il. Il md a .fr

'Ihe inductor plates are secured to the side walls of the hatchway (not shown) in such po- 'sitions that one or the other oi.' the switch arms will be operated to open the contact members associated therewith whenever the car is about mid-way between any two adjacent doors. so that the selector motor Il will start at that time.

With the inductor plates and the relay IR located as described. the operation oi' the motor 2l thereby will cause the carriage on the door 50 selector to move to and stop on the contact segments for the next door while the car is at or passing that door. thus causing all of the circuits pertinent to that door to be prepared at the proper time and in the proper sequence.

'Ihe portion of the door selector. diagrammatically represented by the dotted panel ila, includes a plurality of stationary contact segments Il. Ii, l2 and u, one for each oi' the drst. third, dfth and seventh doors. and a pair of cooperating 00 brushes 4I and II. These brushes are so disposed that when brush u is on one of the contact segments. brush Il is half-way between that segment and the next segment. Also included in the panel are a bottom resetting contact segment G5 to be engaged by a brush 41 when tha car reaches its lowerterminal. and atop resetting contact segment Il to be engaged by a brush 4l when the car has reached its upper terminal.

Adjacent to the section IIa oi' the door selec- 70 tor shown in Fig. 5 are a number of dotted lines disposed according to the door levels to indicate the points at which the door selector carriage is stationed when the car is at any particular door.

Y One brush on the movable carriage is marked with an X to indicate the particular portion of the carriage that is opposite the dotted lines when the selector ls at the corresponding floor.

The various relays and switches illustrated in Fig. cooperate with the apparatus already described to control the selector motor 2l, in the following manner.

Two pairs of contact members CSI and CS2. shown in the upper left-hand corner of the diagram. may be closed by any suitable control ustem, for instance. one including such a means as the car switch CS. The contact members CSI control the energization of the up-direction switch l and the contact members CS2 control the encrgization of the down-direction switch 2. to cause upward and downward movement of the elevator car, respectively.

An up limit switch UL and a down limit switch DL operated by a cam l0 disposed on the car are provided for resetting the selector at the respective terminals, in the event the car and the selector get out ot synchronism.

A pair of up-dlrection relays "U and IIUA are provided for preparing the circuit of the selector motor for operation in the up direction. and a pair of down-direction relays D and IIIDA are provided for preparing the circuit of the selector motor for operation in the down direction.

A pair of relays NA and NB, known as notching relays, are provided for energizing the selector motor to cause it to move ahead a predetermined distance each time the car comes to a iioor. These relays are controlled by the inductor relay IR on the car and by the contact brushes Il and Il in cooperation with the contact segments 4I. l2 and u on the iioor selector.

A starting relay III is provided for starting the energization of the notching relays NA and NB when power is ilrst turned on in preparing the car for operation. This relay is provided with a dash-pot l2 and a spring I3 which cause it to hold its contact making position for a short time after it is energized.

A dynamic braking resistor I is associated with the armature oi' the selector motor Il in position to be inserted ln a short circuit around the amature to stop it quickly and prevent coasting when its power is shut oir.

A top resetting relay i ls provided for resetting the selector at the upper terminal if it should get out of its accurate position and a bottom resetting relay III ls provided for resetting the selector at the lower terminal under simliar conditions.

My invention may be understood best by an assumed operation thereof,

Let it be assumed that the car is standing at its lower terminal and that the switches KI and K are closed to prepare the car for operation. The closing of switch KI connects the driving motor M toits source of supply to prepare the hoisting mechanism for operation.

The closing of switch K connects the control system to its source of supply and thereby immediately energizes the coil of the inductor relay IR, the resetting relay l, the resetting relay 3M and the starting relay Ill.

The circuit for energizing the inductor relay IR extends from supply conductor LI through conductor 60 and the coil In to the supply conductor L2 and causes the relay to remain energized and ready for operation by its cooperating inductor plates while the car remains in service.

The circuit for energizing the starting relay 2" extends from supply conductor LI through conductor II and the coil of the relay 2" to the supply conductor L2. This relay is provided with a dash-pot i2 which prevents It from operating its contact members lor a predetermined time after it is energized and therefore it aHords a means for energizing the notchlng relays NA and NB to start them in operation.

The relay NA is energized by a circuit extending from the supply conductor LI through conductor It, the contact members IRI, conductor 62, the contact member a of relay 29| and the coil of relay NA to the supply conductor L2.

'Ihe relay NB is energized by a circuit extending from the supply conductor LI through conductor t0. the contact members IRI, conductor Il. the contact members b of relay 2" and the coil of relay NB to the supply conductor L2.

The notchlng relays NA and NB, upon being energized, close their contact members c to complete self-hoiding circuits that cause them to remain energized until the car passes an inductor plate.

I'he circuit for the coil of resetting relay SII. closed for energizaticn by the switch K. extends from the supply conductor LI. through conductor Il. contact segment ll, contact brush 4l, conductor il and the coil of relay Ill to the supply conductr L2.

The energization of the relay 3l! closes its contact members o and thereby energizes the updirection relays "U and IIUA for preparing the control system for up-direction operation of the car. The circuit extends from supply conductor LI through conductor Il, the contact members of Idown push-button Il, the contact members b of relay "D, the coils oi relays IIU and IIUA. conductor Il. the contact members s of switch UL and contact members a of relay SII to supply conductor L2.

Upon energization of the up-dlrection relay "U, its contact members a close to prepare a circuit for the up-direction switch I: its contact members b close one gap in the armature circuit of the selector motor 23 for operating it in the updirection: its contact members c and d close to prepare circuits of the notching relays NA and NB for operation in the up direction: and its contact members e open to interlock the down direction relays D and DA to prevent their energizaticn while the car is operating upwardly.

'Ihe energization of the relay "UA closes its contact member to complete another gap in theV armature circuit of the selector motor 2l for updirection operation.

Assuming now that the car attendant moves the car switch CS to operate the car upwardly. then the contact members CSI close to energize the up-direction switch I to move the car upwardly by a circuit extending from the supply conductor LI through the contact member CSI. the contact members a of relay "U and the coll of updirection switch I4 to the supply conductor L2.

The energization of the up-direction switch I closes its contact members a and b to complete a circuit for energizing the generator windings GF for energizing the generator G and through it the motor DM to etle.;t the upward hoisting of the car. This circuit extends from supply conductor LI through conductor ll. the contact members a of switch I. conductor 69, the iield winding GF, the contact member b of switch I and Iczonductors Il and Il to the supply conductor The energization of the generator G now moves the car upwardly and. as it leaves the lower floor. the cam til rides oil the limit switch DL, thus permitting that switch to close its contact members a and b. The closing of the contact members a complete a holding circuit for the resetting relay 308 to take the place of the former circuit which extended through the contact segment I8 and the contact brush 4l but which will be opened as soon as the selector moves to the next floor.

As the car continues moving upwardly, the inductor relay IR. is brought opposite the inductor plate 34 which operates the switch arm bearing the contact members IR! to open those contact members. The opening oi these contact members opens the holding circuit of the notching relay NB and deenergizes that relay which thereupon closes its back contact members b to -complete a circuit for energizing the armature circuit oi' the selector motor 23.

The circuit iust completed for the armature of the motor 23 extends from supply conductor LI through conductors 1I and 1l. the contact members b of relay IIU, conductors 12 and 13, the amature ci motor 23. conductors Il and 15, the contact members of relay lIlUA. conductors 1I and 11, and the back contact members b of notching relay NB to the supply conductor L2.

Inasmuch as the eld winding 'Il oi the motor n was energized by the closing of ch switch s: by a circuit extending from supply conductor LI, through conductor I9 and the ileld winding 13 to the supply conductor L2, the present excitation of the armature causes the motor to operate in the up direction, thereby eilecting, through the reduction gearing 23, a rotation ci the sprocket wheel 2| and a consequent lifting of the sprocket chain 2li and the brush carriage Il on the floor selector (see Fig. 2).

Referring again to Fig. 5. the upward movement oi the carriage II moves the brush Il' on the contact segment 3l and the brush 45 into engagement with the contact segment Il. As soon as the contact brush 4I engages the contact segment Il. a circuit is completed for re-energizing the notching relay NB to open its back contact members b and to close its front contact members a and c. This circuit extends from supply conductor Ll through conductor Il, contact sesment 4I, brush Il, conductor 3l, the contact members c of relay IIU, conductors l2 and I3 and the coil o! relay NB to supply conductor L2.

The opening o2 the back contact member b of the energized relay NB opens the circuit of the motor 23 and the closing of the iront contact members a oi' the relay NB completes a short circuit around the armature and through the dynamic braking resistance 63| to stop the motor quickly and prevent coasting.

The carriage I'I of the iioor selector is now disposed upon the contact segments corresponding to the second ioor and remains there until the car, in moving toward the third iloor, reaches a point where the switch arm of relay IR bearing the contact members IRI comes adJacent to the inductor plate 3| and is thereby operated to open the contact members IRI.

The opening oi' the contact members IRI deencrgizes the noiching relay NA, thereby causing it to close its back contact members b and open its front contact members a and c. The closing of the contact members b of relay NA again closes the circuit for the selector motor 23, which starts immediately to move the door selector carriage II to the contact segments i'or the third iloor.

The movement of the brush carriage I1 causes the brush linger 45 to move of! the contact segment ll and the brush linger Il to take its piace 5 thereon. The engagement of the brush M with the contact segment 4I completes a circuit for reenergizing the notching relay NA which circuit extends from the supply conductor LI through conductor it, contact segment 3|, brush Il, con- 10 ductor Il, the contact members d o! relay llU and the coil of relay NA to the supply conductor L2.

The reenerglzation of the notching relay NA opens its back contact members b and closes its iront contact members a and c. The opening ot the back contact members b deenergizes the selector motor 23 while the closing oi the iront contact members a reestabiishes the short circuit including the dynamic braking resistor U around 20 the armature of motor 23 and thus brings that motor to an instant stop. The closing o! the contact members c on the notching relay NA reestablishes-a holding circuit lor that relay which is controlled by the contact members IRI. .5

The aforesaid operation continues as the car moves upwardly: that is, each time the car passes an inductor plate, the selector motor 23 starts to move the brush carriage from the contact segments for one floor to the contact segments for .'20-

the next floor and. as soon as the carriage reaches the next iloor position. the engagement of the brushes and the contact segments stops the motor. Thus the car starts the motor and the selector stops it atter it runs a predetermined 55 distance.

As the car reaches the seventh door (in this instance the upper terminal floor) the car attendant moves the car switch CS to open the contact members CSI thereby deenergizing the up-direc- 4o tion switch I to stop the car.

The opening oi the iront contact members c on the deenergiaed direction relay I opens one gap in the circuit for the energized up-direction relays "U and IIIUA. Inasmuch as the resetting relay 304 is energized, its contact members a are open and thus another open gap exists in the circuit for the up-directlon relays IIIU and llUA. As the car C comes into the top iloor. its cam Il engages and opens the up limit switch UL. The opening oi the contact members a of switch UL opens another gap in the circuit ior the updirection relays IIU and IIUA. and thereupon these relays are deenergised.

Although the relay 3M was energized through 55 the contact members b of limit switch UL it should be noted that the movement oi' the noor selector to the contact segments for the 7th iioor caused the brush l! on the tloor selector carriage I'I to engage the contact segment ll as the car 60 reached the upper terminal and thereby provided a holding circuit for the relay 3M while the up limit switch UL remains open.

It may happen in the operation oi' the floor selector that it misses a notch and falls behind the movements of the car. In such an event, the contact brush Il would fail to engage the contact segment 43 and therefore no holding circuit for the resetting relay 3M would be maintained when the car reached its upper terminal and opened the up limit switch UL. Under such conditions, the relay 3M would close its contact members and maintain the up-direction relay IIIU and UA in an energized position until the floor selector carriage caught up with the movementofthecar. Itwillbeunderstood,thatit the selector reaches the limit of travel prior to the arrival of the car at its limit, the irictional driving connection between motor Il and 5 sprocket 2i will release.

Prom this it will be apparent that the updirection relays "U and IIUA will not be deenergized until both the up-direction switch and the up limit switch are opened.

lo Returning now to the deenergization of the up-direction relays IUU and IUUA, the closing ot the back contact member e oi deenergized relay IIU completes a circuit for energizing the down-direction relays IID and BODA. This circuit extends from supply conductor Li through conductor the contact members oi "up" pushbutton Il. the coil ot relay IID, the contact members e oi' relay IIU. the coil of relay IIIDA, conductors Il and l1, the contact members b oi switch DL and the contact members c ot relay I to the supply conductor L2.

Upon energization of the down-direction relay IID, its contact members a close to prepare a circuit for down-direction switch 2: its contact members b open for interlocking updirection relay "U: its contact members c close for reversing the selector motor circuit for operation in the down direction: and its contact members d and e close to complete circuits between the brushes Il and Il and the coils ot the notchlng relays .NA and NB for energizing those relays respectively as the car passes corresponding inductor plates while running in the down direction.

Assuming now that the car attendant moves the car switch CS to close the contact members CS2 for operating the car in the down direction, then the closing oi.' the contact members C8! completes a circuit for energizing the downdirection switch 2. Ihis circuit extends from supply conductor Li through the closed contact members CS2, the closed contact members a o! relay D and the coil 'of down-direction switch 2 to the supplv conductor LI.

The energization of the down-direction switch closes its contact members a and b to complete a circuit to energias the field winding GP o! the generator G to start the car downward.

which circuit extends from supply conductor Li o through conductor Il, the contact members a of switch 2. the winding Gl", conductor Il, the contact members b o! switch 2. and conductor Il to the supply conductor L2. Upon the energization of the iield winding GP. the motor operating 5;, mechanism starts the car downwardly.

As the car leaves the top iioor. the car Il rides o8 the limit switch UL thereby causing that switch to close its contact members a and b. The closing o! the contact members a of switch UL 00 prepares a circuit through which the up-direction relays may be energmd when the car is to be moved upward. The closing oi the contact members b of switch UL maintains a circuit for energizing the relay I when the contact brush g5 l moves oli the contact segment Il.

As the car continues its downward trip toward the 6th floor, the arm of relay IR. bearing the contact members IRI comes adiacent the inductor plate I3 which operates it to open the 7o contact members IRI, thereby deenergizing the notchlng relay NA.

The deenergization of the notchlng relay NA closes its back contact members b and thereby again restores the hereinbefore described circuit 75 i'or the selector motor 23. Thercupon, the selector motor starts operation in the down direction and thereby lowers the brush carriage i1 to bring it into engagement with the contact segments corresponding to the 6th door. 'I'his movement o! the carriage causes the contact 5 brush M to move on the contact segment Il (see section of selector indicated as panel lia in Fig. 5), and the brush to engage that segment. The engagement oi' the brush 45 and the contact segment 4I completes the circuit for ener- 10 gizing the notchlng relay NA to stop the selector motor. This circuit extends from supply conductor LI, through conductor Il, contact segment 43, brush Il, conductor l. the contact members d ot down direction relay IUD, and the 15 coil of notchlng relay NA to the supply conductor L2.

The energization of the relay NA causes it to open its back contact members b to deenergize the selector motor 23: to close its front contact 20 members a for inserting the dynamic braking resistor nl in a short circuit around the selector motor armature; and to close its iront contact members c to provide a holding circuit for itself. Thus the selector motor is stopped as soon as it 25 moves the brush carriage Il to the contact segments corresponding to the 6th iioor.

As the car continues its downward trip past the 6th door to the 5th door, the inductor relay arm bearing the contact members IR! comes opposite 30 the inductor plate u. when the car is approximately midway between the iloors, and is thereby Operated to open the contact members IR: to deenergize the notchlng relay NB, to again start the selector motor 23. 35

The deenergizatlon o! the notchlng relay NB operates to close its back contact members b to again restore the energizing circuit for the selector motor 23. which now operates to move the brush carriage I1 to the contact segments ior the 40 5th door. `v,When the brush carriage engages the 5th door segments, the brush 45 engages the contact segment l! and thereby completes a circuit for energizing the relay NB to stop the selector motor.

'Ihe energization of relay NB opens its back contact members b and thereby opens the circuit oi motor 2l. At the same time the relay NB closes its front contact members a to reinsert the dynamic braking resistor lll in a short circuit ot the selector motor amature to stop the motor quickly and prevent coasting: and closes its iront contact members c to complete a holding circuit tor itself.

The operation of the iioor selector continues from iioor to iioor in this manner as the car moves to the lower terminal: that is, the selector carriage II- is moved to a new set of contact segments each time the car passes from one floor to the next floor regardless ot the distance between so the iloors.

Ii' it is desired to reverse the movement oi' the car at any time while it is in a position between its terminals, one or the other oi the up and "down" push-buttons Il and l., (see the caros inPlg. 1 and thediagraminFlg. 5). maybe 0D- erated for this purpose.

Ii' the attendant desires to reverse the car while it is travelling downwardly, he may do so by pressing the up push-button 6I to deeqergize 70 the down-direction relays D and IDDA. 'I'he deenergization o! the down-direction relay "D closes its back contact members b to energize the up-direction relays IIU and lllUA thereby conditioning the car tor upward operation. so that i the work on the driving motor.

closing of the up-direction contact members CSI will operate the up-direction switch I to move the car upwardly.

On the other hand, if the attendant desires to reverse the car while travelling upward, operation of the down" push-button 5S will open the circuit for the up-direction relays IIIU and lilUA thereby deenergizing these relays. When these relays are deenergized, the back contact members d on the up-direction relay "U closes the circuit for the down-direction relays 80D and IIDA. thus causing the control system to be in condition tor operating downwardly.

As has been hereinbefore stated, iioor selectors are usually constructed for installation in a vertical position and inasmuch as the selectors must be provided with contact segments for each iioor, it is quite a problem to find a place with a sumciently high ceiling in which to install them when the building is very tall and has an exceeding large number of iioors. To overcome this dimculty and permit the floor selector to be installed in two short vertical sections instead of y one tall section. I have provided the structure shown in Fig. 3.

As shown in Fig. 3, the oor selector is constructed in two sections FSI and FB2. The section FSI may be similar to the corresponding selector shown in Fig. 2 in that it is provided with a plurality of contact segments lib, a brush cara weight 22h.

The section FB2 of the floor selector is similar to the section FSi except that its brush carriage I'ic is made much heavier than the brush carriage I'Ib of the section FSI. The sprocket wheel 2lb. is mounted on a rotatable shaft l0 and the sprocket wheel Zic is nxed upon a rotatable shaft si. The inner ends of the rotatable shafts Il and Il are connected to a suitable diflerential gearing s3 to be operated by a selector motor 2lb. which may be driven in any suitable manner, such for instance as that just described in connection with Fig. 5.

The section FSI is also diii'erent from section FBI in that its carriage llc rests upon blank contact segments at its lowermost position. The carriage is also provided with a, projection Il in position to engage a switch Il, in a casing l1 for transferring the floor circuits and control circuits from carriage ilb to carriage llc when carriage llc starts upwardly.

It is to be understood that the counterweights attached to the chains 2lb and 22o are of the same sise and that they should be of such sise as to keep the chains under tension and in good working engagement with the sprocket wheels. If desired, the counterweights may also be made heavy enough to counterbaiance a small portion of the weight of the carriages in order to reduce However, they should not be made so heavy that they will prevent the carriage llc from having a greater downward pull on its chain than the carriage ilb has on its chain.

With the construction shown in Figs. l and 3, in which the car C and the counterweighted members l'lb and i'lc are in their lowermost positions, energization of the motor 23h in its "up" direction when the car is started upwardly will cause the carriage I1b to be lifted first through the operation of the differential gearing I3, the

shaft 9|, the sprocket wheel 2lb and the chain 2|lb by reason of the fact that the carriage ile is much heavier than the carriage ilb'.' When the carriage IIb reaches the top of its selector it will strike the projections Il and come tc a s stop. It desired, the projections sl may be constructed of rubber or springs to cushion the im' pact of the carriage. However. when the motor 23h continues operation in the up-direction the fact that the carriage i'lb cannot move any iur- 10 ther will stop the rotation of the shaft Il and cause the difl'erentlal gearing il to eilect an upward movement of the carriage i'lc through the operation of the shaft il, the sprocket wheel lic and the chain 22. Further upward travel of the l5 elevator car will, of course, be accompanied by further upward movement o! the carriage i'ic.

In order that carriage llc may be out of engagement with active segments during movement of carriage I1b, and that carriage ilb may 2o be out of engagement with active segments during movement of carriage IIc, the upper limit of carriage |1b is spaced somewhat above the uppermost segments associated therewith. and the lower limit of carriage I1c is spaced some- 2s what below the lowest segments associated therewith. With this arrangement, a single notching operation at the transfer floor, during upward car travel, first drives carriage I1b out of engagement with active segments, and then drives 80= carriage llc into engagement with active segments. During downward travel, a reverse operation occurs.

Upon reversing the operation of the motor 23h,

the carriage l'lc will be lowered through the ss:

'differential il. nrst. by reason of its greater weight until it reaches its lower terminal and. rests against the projections No thereon, in which position it has reversed the switch Il and transferred the door and control circuits to the 4o carriage IIb. Further rotation of the motor 2lb will then cause the carriage I'ib to descend until it reaches its lower terminal.

In the further modincation of the door selector shown in Fig. 4, for the purpose of permitting 4s installation in low-ceiling rooms, the iloor selector sections PS3 and FBI are illustrated as placed in close side-by-side position. with individual motors for operating the brush carriages.

The selector of FlgJ is shown as constructed 50 for a relatively high building. each section being provided with contact members for approximately half of the stories. The section PBI is to be employed, for example, for the stories from one to twenty. and the section FBI is employed for 65 the remaining doors.

The sections are similar to the sections shown in Fig. 2. the section PS3 being provided with a plurality oi.' contact segments Ild, a plurality 'of contact breakers iid mounted on a brush carriage i'ld, to be moved over the contact segments Ild by a chain 2id, a sprocket wheel llc, and a driving motor 2id. The section PS4 is oonstructed exactly like the section FBI and its brush carriage Ile is driven by a motor ile. The selector is operated in practically the same manner as the selector shown in Fiss. 2 and b except that as the brush carriage lld reaches the top in the up direction it then disconnects its motor from operation and connects the motor 23e for driving the carriage I1e on section FSI. When the car leaves the top door and the carriage lle reaches the bottom of section FBI it cuts out its motor and connects the motor 28d for operation to drive the carriage i'ld down the 7 section PS2 to connect the contact segments and brushes in accordance with the movement o! the car past the oors.

The control system tor this double-section arrangement is practically the same as that shown in Fig. 5 except that transverse relays are added to connect and disconnect the motors and the notching relays as well as the signal and control circuits to the carriages when the one brush carriage ceases operation and the other starts operation as the car passes the 20th door.

The modified control system is diagrammatically illustrated in Fig. 6 in connection with the 18th to the 23rd doors where the operation o! the door selector changes from one brush carriage to the other. In Fig. 6 the control system embodies the same relays and switches as shown in Fig. 5 and they are given the same reference numbers. However, the control system of Fig. 6 is arranged to operate two selector motors 23d and 22e instead of one selector motor. and a low relay L and a high relay H are provided in connectlon with two portions of the commutator segments illustrated in Fig. 4, by the dotted rectangles ild and ile.

The low relay L is provided for connecting the motor 22d for operation when the car is in the lower half oi' the building and the seelctor section PS2 is being operated. This relay also closes certain contact members to prepare operating circuits i'or the notching relays NA and NB when selector section P82 is operated. as well as transferring necessary circuits from carriage IId to carriage Ile.

The high relay H is provided for connecting the motor 22e for operation when the car is in the upper half of the building and the selector section PS4 is being operated. This relay also closes certain contact members to prepare operating circuits for the notching relays NA and NB when selector section PSI is being operated as well as transien'ing iloor and control circuits from carriage lle to carriage i'ld.

The low relay L and the high relay H are electricaily interlocked to prevent operation of the one when the other is in service.

In assuming an operation oi the car, it will be considered as having been stationed at the lower terminal.v that the switch E was closed. thereby energizing the resetting relays 204 and 32|. the starting relay 22|, the notching relays NA and NB, the up-direction relays OIIU and "UA, the neld windings 12d and llc oi' the selector motors. and the inductor relay IR. In the systemshownlnFlg.6thelayre1ayLisalso energiaed by the starting relay 2 by the closing oi' switch K when the car is placed in operation. This initial circuit extends from supply conductor LI. through conductor i", the contact members b of relay 23|, the contact members d of relay IU and the coil of relay L to the supply conductor L2.

The energization of the relay L closes its contact members e, thereby completing a self-holding circuit for itself extending from supply conductor Li through conductor ill, the contact members e of high relay H. contact members e oi relay L and the coll of relay L to supply conductor L2. Therefore. relay L remains energized after the starting relay 22| opens its contact members.

Also, upon energization ot the relay L it closes its contact members a to connect the motor 22d to the operating circuit: its contact members b and c close to connect the brushes lill and ill that it is continuing its upward movement, then, 10'

as lt passes from the 18th floor to the 19th door, the inductor arm bearing the contact members IRI passes the inductor plate i and is operated to open its contact members.

The opening ot the contact members IRI be- 15 tween the 18th and 19th tioors opens the holding circuit oi' the notching relay NA, thereby deenergizing that relay. The deenergization oi the relay NA closes its back contact members b. thereby completing a circuit for operating the zo selector motor 23d. Ihis circuit extends from supply conductor LI through conductors |22 and |24, the contact members b oi' up-direction relay "U, the armature oi motor 23d, the contact members a ot relay L. conductor |25, the cong5 tact members o! relay IIIUA, conductors i2! and |21 and the contact members b ot relay NA to supply conductor L2.

The operation of the selector motor 22d moves the selector carriage lid upwardly to the contact so segments for the 19th door, which in turn, causes the contact linger lll to move oi! segment H2. and to cause contact brush ill to move upon segment H2. The engagement of the brush lill and the contact segment |I2 completes a gg circuit for energizing the notching relay NA to stop the motor 22d. This circuit extends from supply conductor LI through contact segment H2, brush lill, the contact members b of relay L. the contact members c oi' relay U and the 40 coil N o! relay NA to the supply conductor L2.

The energization of the notching relay NA opens its back contact members b to open the circuit ot motor 22d and the closing of its front contact members a places the dynamic braking resistor 22| in a short circuit around the armature of the motor 22d to stop the motor quickly without coasting.

The closing ot the contact members b of the energized relay NA completes a holding circuit so tor itself where it will energize until the contact members IRI ot the inductor relay are opened.

As the car continues upwardly to the 20th door that arm of the inductor relay IR bearing the contact members IR2 passes the inductor plate sa lli and is thereby operated to open the contact members. The opening of the contact members IR2 deenergizes the notching relay NB which closes its back contact members a to start the motor 22d to move the selector carriage ila to the so contact segments of the 20th floor. This circuit extends from supply conductor Li through conductors |22 and |24. the contact members b of relay IIU. the amature oi' motor 22d. the contact members a ot relay L. conductor |25, Vthe es contact members of relay "UA, conductors I2C and |22 and the contact members a of relay NB to the supply conductor L2.

'I'he operation o! the motor 22d moves the selector carriage ild up into engagement with the 70 contact segments for the 20th floor. This movement ot the carriage causes the contact brush ill to engage the contact segment I Il on the door selector section PS2 thereby energizing the notching relay NB through a circuit extending 'is from the supply conductor Li through conductor the contact segment ill, the brush I|| and thence as formerly described through the coil of relay NB.

The energization of the notching relay NB opens its back contact members a to deenergize the motor 23d and the closing of the contact members b completes a circuit placing the dynamic braking resistor 830 in short circuit with the amature of the motor 20d to stop the motor quickly and prevent it from coasting.

The movements of the carriage Ild to the contact segments for the 20th iloor also causes the brush ill to move into engagement with the contact segment IIB for the purpose of energizing the high relay H to disconnect the motor 23d from its operating circuit and connect the motor 20e to the operating circuit, so that if the car goes up the floor selector section FSG will come into operation. The circuit completed by brush ill and segment lil for energizing relay H extends from supply conductor Li through conductor the contact members c of relays NB and NA. the contact segment iii, brush lil, the contact members e of relay U and the coil of relay H to supply conductor L2.

'Ihe energization of the relay H opens its contact members e to open the holding circuit for the low relay L and thereby deenergize relay L.

The energization of the relay H further closes its contact members a to connect the motor 23e to the operating circuit: closes its contact members b and c to connect the brushes and |2I to the operating circuits of the notching relay NA and ND; closes its contact members d to provide a holding circuit for itself; and closes its contact members l to connect the iloor circuits and control circuits through the brush carriage ile.

Upon the deenergization of relay L. its contact members a open to disconnect the motor 22d from the operating circuit; its contact members b and c operi to disconnect the brushes ||0 and i|| from the circuits of the notching relays NA and NB; its contact members d close to prepare a circuit through which it may be reenergized when the relay H is deenergized: its contact members e open to prevent energization through the activity of relay 200: and its contact members f open to disconnect the floor circuits and control circuits from the brush carriage I'Id.

In the system now being described. both sections PBI and PS2 of the door selector are provided with segments corresponding to the 20th. or transfer. iloor. To illustrate the transfer oi' control circuits from selector FSI to FB2, a representation row of segments "l, Ill and 402. corresponding to the 18. 19 and 20th noors have been illustrated as arranged for cooperation with a brush lll, on selector FSI, and a row of segments 408 and l, corresponding to the 20th and 21st noors, have been illustrated as arranged for cooperation with a brush 000. on selector FS. While relay L is energized. the 20th floor circuits are controlled through brush 005 and segmentv 002; while relay H is energized, the 20th noor circuits are controlled through brush 400 and segment 008. It will be understood that a similar transfer arrangement is provided for the other groups of segments on the selector.

Assuming now that the car C continues its upward trip. moving from the 20th floor to the 21st floor. then the arm bearing the contact members IRI on the inductor relay IR passes the inductor plate |02 and is operated to open the contact members IRI. The opening of the contact members IRI opens the holding circuit of the notching relay NA and deenergizes that relay.

The deenergizatlon of the relay NA closes its back contact members b and thereby completes a circuit for operating the selector motor 23e on the selector section FSI. 'Ihis circuit extends from the supply conductor Li through conductors |23 and |24, the contact members b of relay 00U, conductor |3I, the contact members a of relay H. the armature oi' motor 20c. conductor |20, the contact members of relay 00UA, conductors |20 and |21, and the contact members b of relay NA to the supply conductor L2.

The motor 23e now runs in the up direction until it moves the brush carriage l'le from its postion on the contact segments associated with the 20th oor to a position on the contact segments corresponding to the 21st floor, in which position the contact brush |20 on the floor selector PS2 engages the contact segment III corresponding to the 21st iloor. and thereby energiaes the notching relay NA by a circuit extending from the supply conductor LI through conductor |32, the contact segment ill, brush |20. the contact members b of relay H, the contact members c of relay IOU and the coil of relay NA to the supply conductor L2.

'Ihe energization of the relay NA opens its contact members b to open the circuit of motor 22e and closes its contact members a to insert the dynamic braking resistor 800 in a short circuit around the armature of motor 22e thereby stopping the motor quickly and preventing it from coasting.

As the car continues from the 21st door to the 22nd floor the inductor relay IR passes the inductor plate |00 and thereby opens the contact members IR2 thereby deenergizing the notching relay NB to effect operation of the motor 20e for moving the brush carriage to the contact segments for the 22nd floor. This operation of the notching relays NA and NB continues from iioor to iloor as the car moves on up to its upper terminal and consequently the brush carriage IIe is moved upwardly over the corresponding iloor contact segments, in accordance with the previous description given in connection with Fig. 5.

At the upper terminal. the car may be reversed and started downwardly in the same manner as described in connection with Fig. 5.

Assuming now, that the car has arrived at the 22nd iloor on its down trip, then the resetting relays 200 and 300, the starting relay 200, the notching relays NA and NB. the down direction relays 00D and IIDA, the inductor relay IR and the high relay H are energized.

Assuming further that the car moves downwardly from the 22nd floor to the 21st iloor. then the inductor relay IR. passes the inductor plate |02 thereby opening the contact members IR2 which open the holding circuit of the notching relay NG and deenergize that relay.

'Ihe deenergization of the relay NB closes its back contact members a, thereby energizing the motor 23e to run the brush carriage ile down to the contact segments for the 21st floor. At this point. the brush |20 on the floor selector engages the contact segment III and thereby completes a circuit for energizing the notching relay NB to stop the motor. 'Ihis circuit extends from supply conductor LI through conductor |32. contact segment i Il, brush |20, the contact members c of relay H. the contact members c of relay DA and the coll of relay NB to the supply conductor L2.

Aso

The energisation of the relay NB opens its back contact members a to deenergize the motor 23e. and closes its iront contact members b to insert the cLvnamic braking resistor 630 for stopping the motor quickly without coasting.

As the car continues downwardly from the 21st iioor to the 20th iioor, the inductor relay IR passes the Inductor plate |02, thereby opening the Inductor relay contact members IRI to eilect the operation oi motor 23e. The opening oi' these contact members opens the holding circuit ot the notching relay NA, thereby deenergizing that relay.

I'he deenergization o! the relay NA closes its back contact members b, thereby energizing the motor 23e to run the carriage I'Ie to a position below the contact'segments for the 21st door, in which position the brush III will engage the contact segment III to complete a circuit for reenergizing the relay NA to stop the motor 23e. At the same time, the brush- I I1 will engage the contact segment IIB for the purpose ot ctl'ecting a transfer oi' operation from selector section FSI to selector section PS3 inasmuch as the car has now moved from the 21st door to the 20th door.

In effecting this transfer. the engagement of the brush III with the segment Il. completes a circuit that energizes the low relay. This circuit extends from supply conductor LI through conductor Ill, the contact members c of relays NB and NA, the contact segment Il., brush III, the contact members d of down direction relay IBD and the coil oi relay L to the supply conductor L2. The energization of relay L opens its contact members d, thereby deenergizing the high relay H.

Upon the deenergixation oi' relay H. its contact members a open to disconnect the motor 23e from the operating circuit, its contact members b and c open to disconnect the brushes III and I2I from the operating circuits oi the notching relays NA and NB; its contact members d open to interlock and prevent its own energizetion while relay L is energized; and its contact members f open to disconnect the iioor circuits and the control circuits through the brush carriage Ile.

The energization of the transfer or low relay L, in addition to deenergizing the high relay H. also closes its contact members a to connect the motor 23d to the operating circuit: its contact members b and c close to re-connect the brushes Il! and III to the operating circuits of the notching relays NA and NB: its contact members e close to restore its self-holding circuit; and its contact members f close to connect the iloor circuits and the control, circuits through the brush carriage I'Id o! selector section F83.

With the door circuits and the control circuits rcconnected through the brush carriage IId standing at the 20th floor, the selector is now ready to move its carriage downwardly, door by door, with the downward movement of the car.

Assuming that the car leaves the 20th iloor and passes to the 19th i'loor, then the inductor relay IR. will pass the inductor plate itl and will be operated to open the contact members IRI, which will open the self-holding circuit of thc notching relay NB and deenergize that relay to start the motor 21d.

The deenerglzation of the relay NB closes its back contact members a to complete a circuit for the motor 23d. 'I'he circuit extends from supply conductor LI through the motor as previously described. Thereupon the motor 23d operates to move the brush carriage Ild down to the contact segments corresponding to the 19th door, where the brush IIII engages the contact segment II! and stops the motor.

The engagement of the contact segment II! 5 and the brush I I0 completes a circuit for energizing the notching relay NB, which circuit extends from the supply conductor LI through contact segment H2, brush I I0, the contact members b oi' relay L, the contact members c o! down direc- 10 tion relay MDA and the coil of relay NB to the supply conductor L2.

The energization o! the relay NB opens its back contact members a to deenergize the motor 23d and closes its contact members b to reinsert l5 the dynamic braking resistor lll in short circuit with the armature oi the motor 23d to stop the motor quickly without coasting.

A further movement oi' the car downwardly will cause the operation of the carriage I'Id down- 20 wardly from door to tloor as described in connection with Fig. 5.

From the foregoing, it is apparentthat I have provided a iloor selector that may be easily and inexpensively manufactured and which may be 25 readily installed and maintained in operation in a vertical position in rooms having either high ceilings or low ceilings.

Although I have illustrated and described only a few embodiments oi' my invention, it is evident 30 that many modincations and changes therein may be made without departing trom the spirit and scope of the appended claims.

I claim as my invention:

l. In an elevator having a car operable past a 85 plurality oi' floors. an auxiliary device, a motor for operating the said device in accordance with the movements oi' the car, means responsive to operation oi' the car for starting said motor in operation, means responsive to movement o! the 4 device a predetermined distance for stopping the motor, and means responsive to a reversing oper ation of the car for reversing said motor.

2. In a iloor selector tor an elevator car operable past a plurality of iioors, a stationary member. a movable member, a motor for actuating the movable member along the stationary member, means operably responsive to operation o! the car tor starting said motor in operation. means operably responsive to operation of the so movable member for stopping the operation o! said motor, and means responsive to a reversing operation of the car for reversing said motor.

3. In a iloor selector for an elevator car operable past a plurality oi doors, a stationary ss member, a movable member, a motor for actuating the movable member along the stationary member, means operably responsive to movement oi' the car from one oor to another door for starting the motor in operation, means operably so responsive to movement o! the movable member for stopping the motor, and means responsive to a reversing operation oi' the car for reversing said motor.

4. In a tloor selector for an elevator car opes erable past a plurality of doors, a stationary member, a movable member, a motor for actuating the movable member along the stationary member, means operably responsive to movement oi' the car from one door to another door 70 for starting the motor in operation. means operably responsive to a predetermined movement of the movable member for stopping the motor, and means responsive to a reversing operation o! the car for reversing said motor. 75

5. In a floor selector for an elevator car operable in a hatchway past a plurality of floors, a stationary member, a movable member, a motor for actuating the movable member along the stationary member, a device mounted in the hatchway, means mounted on the car to be operated by the device in the hatchway upon movement of the car past said device for starting said motor in operation, means operably responsive to operation oi the movable member for stopping the motor, and means responsive to a reversing operation of the car for reversing said motor.

6 In a oor selector for an elevator car operable in a hatchway past a plurality of iloors, a stationary member, a movable member, a motor for actuating the movable member along the stationary member, a device mounted in the hatchway. means mounted on the car to be operated by the device in the hatchway upon movement oi' the car past said device for starting said motor in operation, means operabLv responsive to operation of the movable member a predetermined distance ior stopping said motor, and means responsive to a reversing operation of the car for reversing said motor.

'1. In a noor selector for an elevator car operable in a hatchway past a plurality of iioors, a stationary member, a movable member. a motor tor actuating the movable member along the stationary member, an inductor plate disposed in the hatchway, between two adjacent iloors. an inductor relay disposed on the car in position to be operated by the inductor plate when the car passes the plate for starting the motor in operation. means responsive to movement of the movable member ior stopping the motor, and means responsive to a reversing operation of the car for reversing said motor.

8. In a iloor selector for an elevator car operable in a hatchway past a plurality oi floors. a stationary member. a movable member, a motor for actuating the movable member along the stationary member, a plurality of inductor plates mounted in the batchway, each of the plates being disposed between each two adjacent iioors, an inductor relay disposed on the car in position to be operated by an Inductor plate upon movement of the car from one door to the next door for starting said motor in operation. means responsive to a predetermined movement of the movable member for stopping the motor. and means responsive to a reversing operation ot the car for reversing said motor.

9. A i'loor selector for an elevator car operable in a hatehway past a plurality o! doors, comprising a plurality oi' rows oi stationary members, a movable member for each row of stationary members, motive means for actuating the movable members successively along their respective stationary members, means responsive to movement of the car for starting said motive means in operation. and meansresponsive to operation oi the motive means for stopping said motive meins.

10. A iioor selector for an elevator car operable past a lower group of iioors and a higher group of floors, a stationary member for the lower group of floors, a stationary member for the higher group of doors, a movable member tor the stationary member for the lower group oi' noors, a movable member for. the stationary member for the higher group oi' iioors. and means responsive to operation oi'. the car for actuating the ilrst-named movable member along the stationary member for the lower group oi' floors only while the car is operating in the lower group oi floors and for actuating the secondnamed movable member along the stationary member for the higher group of iloors only while the car is operating in the higher group of floors.

1l. A iloor selector for an elevator car operable in a hatchway past a plurality of doors, comprising a stationary member for a group ot lower doors, a second stationary member for a group o! upper floors. a movable member for the first stationary member, a movable member for the second stationary member. motive means for operating the movable members successively along their stationary members in accordance with the position of the car at the floors, and means responsive to operation oi' the first movable member to a position corresponding to the upper one of its tloors for transferring the operating eilect of the motive means from the first movable member to the second movable member whereby that movable member will be moved along the second stationary member in accordance with further upward movement o! the car.

12. A floor selector for an elevator car operable in a hatchway past a plurality oi' iloors, comprising a vertically disposed stationary member for the lower floors. a second vertically disposed stationary member ior the upper iloors. a movable member for the first stationary member, a means for limiting the upward motion of the movable member, movable member for the second stationary member. said second-named movable member being weighted more than the ilrst-named movable member, means for limitn ing the downward movement ot the second movable member, motive means for operating the movable members, differential gears connecting the motive means and the movable members whereby engagement of one of the movable members with its limiting means while the car is moving will transfer the operating eiect of the motive means from that movable member to the other movable member.

13. A door selector for an elevator car operable in a hatchwsy past a plurality ot iioors. comprising a stationary member for a lower group of floors. a stationary member for a higher group of doors, a movable member for the first-named stationary member. a movable member tor the second-named stationary member, motive means for said movable members comprising a motor for operating the first-named movable member along the stationary member for the lower group oi' iioors in accordance with the movement oi the car past the lower group of doors. a motor for moving the second-named movable member along the stationary member for the higher group of doors in accordance with the movement of the car past the higher group of floors. an operating circuit for said motors. and means responsive to operation of the motors for disconnecting one motor from and connecting the other motor to said operating circuit when the car passes from one group of iioors to the other group of iloors.

14. A floor selector for an elevator car operable in a hatchway past a plurality of floors, comprislng a stationary member for a lower group of floors, a stationary member for a higher group of floors. a movable member for the first-named stationary member. a movable member for the second-named stationary member, motive means for said movable members comprising a motor i'or operating the mst-named movable member along the stationary member for tbe lower group o! iioors in accordance with the movement oi' the car past the lower group o! iioors. a motor for moving the second-named movable member along the stationary member for the higher group of iloors in accordance with the movement o! the car past the higher group oi' floors. an operatlng circuit for said motors, and means responsive to operation oi.' the movable members for disconnecting one motor from and connecting the other motor to the operating circuit when the car passes from one group of doors to the other group o! iloors.

15. A floor selector i'or an elevator car operable in a hatchway past a plurality ot doors, comprising a stationary member tor a lower group of iioors, a stationary member for a higher group of iioors, a movable member for the iirst named stationary member, a movable member i'or the second-named stationary member, motive means for said movable members comprising a motor i'or operating the first-named movable member along the stationary member i'or the lower group o! floors in accordance with the movement of the car past the lower group of iioors. a motor for moving the second-named movable member along the stationary member for the higher group of iloors in accordance with the movement oi' the car past the higher group o! doors, an operating circuit for said motors. means responsive to operation oi' the motors for disconnecting one motor from and connecting the other motor to said operating circuit when the car passes from one group ci.' doors to the other group of iloors, addi- -tional circuits connected through the movable members. and means responsive to operation of the movable members for transferring said additional circuits from one movable member to the other movable member when the car passes from one group oi' floors to the other group ol doors.

16. In a door selector for an elevator car operable in a hatchway past a plurality of iioors, a plurality of stationary members one for each door, a movable member, motive means for actuating the movable member to sequentially engage the stationary members. means respomive to the car leaving a iioor for starting said motive means in operation, and means responsive to movement oi themovablememberto astationarymembercorresponding to the next door ior stopping said motive means.

i7. In a iloor selector for an elevator car operable in a hatchway past a plurality o! iloors. a body member. a plurality oi contact segments i'or each door disposed on the body member, a carriage. a plurality ci contact members disposed on the carriage, motive means for actuating the carriage to move the contact members over the contact segments. means responsive to movement o! the car from one door to the next door tor starting said motive means, and means responsive to movement oi the carriage to the position corresponding to the next ilocr for stopping the motive means.

18. In an elevator system i'or operating an elevator car in a hatchway past a plurality of iloors, control means for starting. stopping and reversing the operation of the car, and a floor selector comprising a body member. a plurality o! contact segments for each iloor disposed on the body member. a carriage, a plurality of contact members disposed on the carriage, motive means for actuating the carriage to move the contact members over the contact segments, means responsive to movement of the car from one iloor to the next tloor for starting said motive means, means responsive to movement of the carriage to the position corresponding the next iloor for stopping the motive means, and means responsive to operation ot the control means to reverse the car ior reversing said motive means.

19. In an elevator system for operating an elevator carin a hatchway past a plurality of noors. control means for starting, stopping and reversing the operation ot the car. and a oor selector comprising a body member, a plurality of contact segments for each floor disposed on the body member, a carriage, a plurality of contact members disposed on the carriage. motive means for actuating the carriage to move the contact members over the contact segments, means responsive to movement oi the car from one floor to the next door ior starting said motive means. means responsive to movement oi the carriage to the position corresponding to the next iioor for stopping the motive means, and means for simultaneously conditioning the control system and said motive means i'or operation in a direction reverse to their previous direction oi' operation.

20. In a door selector for an elevator car operable in a hatchway past a plurality of floors, a body member, a plurality oi' stationary contact segments i'or each door disposed on the body member, a carriage. a plurality of contact members disposed on the carriage, motive means for actuating the carriage to move the contact memben from the contact segments for one door to the contact segments of the next door in accordance with the movement of the car. means responsive to movement of the car from one door to the next iioor for starting said motive means. means responsive to a predetermined movement o! the motive means for stopping the motive means, and means responsive to failure of the carriage to move to the contact segments corresponding to the iloor to which the car is moved. tor continuing the operation of the motive means until the carriage moves to the contact segments corresponding to the position ot the car.

2l. In a iloor selector for an elevator car operable in a hatchway past a plurality of floors. a body member, a plurality of contact segments for each floor disposed on the body member. a carriage. a plurality of contact members disposed on the carriage, motive means for actuating the carriage to move the contact members over the contact segments, a pair of notching relays for controlling the operation oi' the motive means, means responsive to movement of the car from one door to another i'or operating the notching relays to start the motive means, and means responsive to the arrival of the carriage at the position corresponding to the next door tor operating the notching relays to stop the motive means.

22, In a control system including a iioor selector !or an elevator car operable past a plurality of iloors. a series oi stationary elements. a movable element. motive means for actuating said movable element to sequentially engage said stationary elements, means responsive to the movement of said car from one iloor to another for starting said motive means, and means responsive to the operation o! said motive means for stopping further operation thereof.

23. In a control system including a floor selector tor an elevator car operable in a hatchway. a plurality of stationary contact members, a movable member disposed to sequentially engage said stationary members. a motor for actuating said movable member,l means responsive to movement of the car to a predetermined point in said hatchway for rendering said motor eiective to actuate said movable member and means responsive to operation of the motor for stopping further operation thereof.

24. In an elevator having a car operable past a plurality of iioors, an auxiliary device, a motor ior operating said device in accordance with the movements oi' the car, means responsive to operation oi' the car for sarting said motor in operation, means responsive to movement ot the device a predetermined distance for stopping the motor, and means responsive to a reversing operation of the car i'or reversing the direction of movement o! the device.

25. In a control system including a iloor selector !or an elevator car operable in a hatchway, a plurality of stationary contact members, a movable member disposed to sequentially engage said stationary contact members, motive means for actuating said movable member, means responsiveto movement of said car a predetermined distance for rendering said motive means eiIective to actuate said movable member, and means responsive to operation of said motive means i'or stopping further operation thereof.

28. In a oor selector for an elevator car operable past a plurality oi floors, a stationary member, a movable member, a motor for actuating the movable member along the stationary member, means alternately responsive to the operation of the car for starting said motor in operation, means operably responsive to the movable member for stopping the operation ci said motor, and means responsive to a reversing operation ot the car for reversing the direction oi' operation of said movable member.

27. In a iioor selector for an elevator car operable past a plurality oi' iloors, a stationary member, a movable member, a motor for actuating the movable member along the stationary member, means operably responsive to movement of the car from one floor to another iloor for starting the motor in operation, means operably responsive to movement o! the movable member for stopping the motor, and means responsive to a reversing operation ot the car for reversing the operation of said movable member.

28. In a hoor selector for an elevator car operable past a plurality of doors, a stationary member, a movable member, a motor for actuating the movable member along the stationary member, means operably responsive to movement ot the ear from one iloor to another iloor for starting the motor in operation, means operably responsive to a predetermined movement of the movable member for stopping the motor, and means responsive to a reversing operation of the car for reversing the operation o! said movable member.

29. In a iioor selector for an elevator car operable in a hatchway past a plurality of iioors, a stationary member, a movable member, a motor for actuating the movable member along the stationary member, a device mounted ln the hatchway, means mounted on the car to be operated by the device in the hatchway upon movement oi' the car past said device for starting said motor in operation, means operably responsive to operation of the movable member for stopping the motor, and means responsive to a reversing operation oi the car for reversing the operation of said movable member.

30. In a door selector for an elevator car operable in a hatchway past a plurality of iloors, a stationary member, a movable member, a motor for actuating the movable member along the stationary member, a device mounted in the hatchway, means mounted on the car to be operated by the device in the hatchway upon movement of the car past said device for starting said motor in operation, means operably responsive to operation oi' the movable member a predetermined dstance for stopping said motor, and means responsive to a reversing operation of the car for reversing the operation of said movable member.

31. In a oor selector for an elevator car operable in a hatchway past a plurality of iloors, a stationary member, a movable member, a motor for actuating the movable member along the stationary member, an inductor plate disposed in the hatchway, between two adjacent iloors, an inductor relay disposed on the car in position to be operated by the inductor plate when the car passes the plate for starting the motor in operation, means responsive to movement of the movable member tor stopping the motor, and means responsive to a reversing operation o! the car for reversing the operation of said movable member.

32. In a oor selector for an elevator car operable in a hatchway past a plurality of iioors, a stationary member, a movable member, a motor lor actuating the movable member along the stationary member, a plurality of inductor plates mounted in the hatchway, each of the plates being disposed between each two adjacent floors, an inductor relay,Y disposed on the car in position to be operated by an inductor plate upon movement oi' the car from one tloor to the next iloor for ystarting said motor in operation, means responsive to a predetermined movement of the movable member for stopping the motor, and means responsive to a reversing operation o! the car for reversing the operation oi' said movable member.

33. In a oor selector for an elevator car operable in a hatchway past a plurality oi oors, a plurality ot stationary members one for each door, a movable member, a motive means for 3 actuating the movable member to sequentially engage the stationary members, means responsive to operation ot the car past a predetermined point ln the hatchway for starting said motive means in operation, and means responsive to movement 5 of the movable member a predetermined distance for stopping said motive means.

34. In an elevator having a car operable past a plurality oi floors, control means tor starting, stopping and reversing the operation of the'car, an auxiliary device, a motor for operating the said device in accordance with the movements of the car, means responsive to operation of the car for starting said motor in operation, means respon- 05 sive to movement oi' the device a predetermined distance for stopping the motor, and means responsive to operation ot the control means to reverse the car for reversing the operation of the device.

CHARLES E. ELLIS. Ja.

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