US865383A - Controlling device. - Google Patents

Description

B4351} WW No. 865,383. PAT'ENTED SEPT. 10, 1907.

A. Er HANDY.

CONTROLLING DEVICE.

APPLIOATION FILED DEO.31,1904. I

3 SHEETSSHEET l.

* Jaw/53% No. 865,383. PATENTED SEPT. 10, 1907. A.E.HANDY.

CONTROLLING DEVICE. APPLICATION FILED DEO.31,1904.

3 SHEETS SHEET 3.

311 wanton arm,

witness tion results.

' UNITED S A' sZATENT OFFICE.

ARTHUR E. HANDY, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO THE RHODE ISLAND ELEVATOR AND MACHINE COMPANY, OF PROVIDENCE, RHODE ISLAND, A CORPORATION I or RHODE ISLAND. 1

CONTROLLING DEVICE.

Specification of Letters Patent.

Patented Sept. 10, 1907.

Application filed December 311904. Serial No. 239,179.

To all whom it may concern:

Be it known that I, ARTHUR E, HANDYyH: resident of the city of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Controlling Devices; and I do hereby declare that the following is a full, clear,

and exact description thereof, reference being bad to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to controlling devices and has for its object to produce a device for automatically controlling the flow of electric current to the motor whereby the armature resistance may be automatically removed gradually or step by'step from circuit during the starting of the motor. To accomplish this I providein circuit with the armature of the motor, the usual starting resistance, and provide a plurality of contact fingers arranged to be successively operated to in turn remove portions of the starting resistance from the circuit, whereby thearmature is permitted to start up gradually and build up inspeed until normal opera- In practicel divide the armature resistance intosections and provide acontact finger for each of the several sections, each finger being arranged to make contactsuccessively after the main switch is closed, thereby cutting out the sections of resistance to lower the ohmic resistance-of same to which the armature current is subjected, thus permitting the speed of said armature to increase gradually until the .full voltage-has been applied to' the armature. The

contact fingers being thus successively caused'to make .the necessary connection to successivelyremove the sections of the armature resistance from the circuit until the desired speed has been obtained.

By my improved construction the operation of closing the main switch and then automatically cutting out the resistance step by step is accomplished with the employment of but one coil for both operations. To accomplish this result with but one coil I construct an ordinary solenoid magnet and partially inclose its coil in an iron frame, said frame forming a field about said coil; Thesolenoid core. or plunger is connected to operate the main switch so that when said core is up the said switch is closed, thereby completing the circuit to the motor. When the core is in its raised position said solenoid and its field frame-naturally form 'acted upon by energizing the coil 12.

levers 20-20, (see Figs. 1 and 3).

scribed hereinafter and then pointed out in the ap},

pended claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

In the drawings: Figure 1 isafront elevation showing the general arrangement and construction of my device. Fig. 2 is a detailed view illustrating the contact fingers in their raised position with inner ends engaging the controlling plate. Fig.3 is the mechanism actuated by the solenoid core for raising all of the fingers simultaneously out of the contact position. Fig. 4is a plan view showing the pivoted double or two wing armature. Fig. 5 is a detailed view in perspective showing the field frame. Fig. 6 is a diagrammatic view illustrating the arrangement of the circuits also a theoretical connection is shown illustrating how the switches 1 to 10 inclusive may be controlled through the movement of the armature .46

Referring to the drawings, at 11 is the plate of slate, or other non-conducting material on which the operating mechanism is mounted. At 12 is an ordinary coil having a core 13 forming a solenoid. Extending upward from the upper end of this core is the rod 14 on which rod is supported the contact arm or main switch bar 15 carrying the usual contacts 1616. At 17-17 are contacts whichwhen connected together through the arm 15 complete the circuit to the motor,

the contacts 18-18 are in this instance described as stops. or rests to support the said solenoid and its connccting mechanism when in its down position. To

the lower end of the core is attached the cross bar 19 which bar is operatively connected at either end to the pivoted at 21 to the plate 22, their outer ends being slotted at. 23 to engage the pins 24 -24 in the ends of said bar, and admit of the desired motion.

Pivoted at 25 .onthe lower end of the plate 22 is a short arm 26. The connecting rod 27 which is insulated at 28 on its front edge is pivotally connected at 29 and 30 to each of the said arms 20 and 26. By this arrangement both of these connecting rods 27-27 which are located at either end of the bar, are made capable of being moved both forward and back, as indicated by the dotted lines in Fig. 3', as the said arms when These levers are are moved up and down by the action of the solenoid plunger.

Located below the coil 12 are the ten contact fingers arranged in two groups of five each and pivotally supported at 32 in the brackets 31-31 on either side of the center line these fingers are not insulated from each other. They are numbered from 1 to 10 inclusively, the numbers running alternately first on one side and then the other. The outer end of each of these fingers is pressed downward by the spring 35 (see Fig. 2) which spring is mounted in the support 36 that is held in place by abracket not shown. These ends have secured to them a flexible contact brush 35 and when allowed to drop makes a connection with the cointact 23 thereby cutting out a section of the resistance as above described. The opposite ends of the fingers 36-36 project inward toward the center from the pivoting point and are brought close together side by side as illustrated at 3434 in Figs. 1 and2.

At 37 is a controller plate supported from the bearings 3 8 38 by the rods 41-41 to slide vertically either up or down and control the dropping of the contact fingers. The back of this plate is insulatedat 39-39 (see Fig. 2) where it engagessaid fingers. This plate is made a little longer at 40 on its lower left hand edge so that when the said plate is raised the lower finger 1 on the right side will be released by the plate to fall and make the contact first, then 2 on the left side and so alternate back and forth one after the other.

At 42 is the field frame preferably made of iron incasing two sides and the top of the coil 12. This frame is supported from the switch board 11 by bolts through the ears 4343. Fixed across the lower portion of this frame between the two ends is the brass plate 44 on which is supported the said coil 12. Ears 4545 extend downward from each of the ends of the frame. In these ears are pivotally hung the armatures 46-46. These armatures are counter-balanced by weights 4747 at their outer ends, the said weights being for the purpose of assisting in raising the armatures when they are down and farthest away from the influence of the electro-magnet. These weights are hung at such an angle that when the armatures are down they will not be attracted by the magnetism in the field frame, but

be in a position to exert their greatest lifting power on the armature. These armatures 4646 ,are connected to the controlling plate 37 by the connecting rods 48-48. To regulate the traveling speed of the upplate 53. Over these air holes is fitted a thin rubber disk which disk serves as a gravity valve to close the said holes when the piston is rising. An air cock 54 is tapped into the bottom of the cylinder which may be opened to admit any desired quantity of air thereto and thereby regulate the upward speed of the piston in the cylinder.

The operation of the device may be further described as follows: In starting, the hand switch 60 (see Fig. 6) is moved to the terminal 61 and the current from the main 62 passes through the coil 12 energizing it and causing its core 13 to rise and close the main switch, completing the circuit between the terminals main 69.

field frame serve as a divided south pole.

63 and 64 and allowing the current to pass throughthis switch, conductor 65, resistance coil 66, and through the armature 67 and series winding 68 to the opposite The circuit is thus closed through the armature and all of the armature resistance. The path for the current of the shunt field around the armature is provided through the winding 70 and conductor 71. When the core 13 has risen and closed the air gap between it and the frame, the pull on the swinging armature is greatly increased as the solenoid core then acts as thenorth pole, and thctwo lower ends of the The speed with which the armatures'rise is nicely controlled by the action of the dash pot which in turn controls the falling of the contact .fingers" through the movement of the controlling plate 37 attachedthereto. After the circuit has been closed a predetermined time, the

magnet armatures 46-46 have raised the controlling controlling plate 37. has ascended sufficiently to en-' able contact finger 2 to fall, thereby closing the circuit 2 to short-circuit a second section of the resistance and 3 thus again increase the speed of the motor. The cutting out of this resistance step by step as the said controlling plate is raised, takes place gradually and the counter-electro motive force is thus built up in the armature gradually which building up is due to the increased speed of the said armature until the entire resistance has been cut out by the falling of the eighth finger. The falling of finger 9 then completes the circuit to cutout a portion of theseries winding, as illustrated in Fig. 6, and the falling of finger 10 cuts out the balance of this series field winding causing the said motor to then run as a shunt wound machine. The cutting out of the series field and causing the machine to run as a shunt motor is done more particularly when the device is used in elevator work.

When it is desired to stop the motor the switch 60 is opened thereby breaking the circuit and allowing the core 13 of the solenoid to fall and open the main switch. The falling of this solenoid core operates through the arms 20 and 26, as above described, to throw forward the insulated connecting rods 2727 to engage the underside of each of the two series of fingers and raise them all at once from their contact positions. The armatures 46 46 then fall being retarded by the dash pot and the plate 37 is carried down over the ends of said fingers to hold them up clear of the contacts. The above described operation is performed each time the 7 motor is started and stopped.

Syome of the essential features of this device are, that it has but onecoilwhich serves a double purpose, first it acts on its core as a solenoid to draw it up and close the main switch, and then it is automatically transating these fingers they make and break their connection quickl'y,do away with the multiple solenoid or A magnet control system and also the objectional sliding pense of manufacture .to a minimum.

My invention is not restricted to the precise'construction and arrangement of parts herein shown and described-nor to the various details thereof, as the same .n ay be modified or i e-arranged in various particulars without departing from the spirit and scope of my invention, one practical embodiment of which has been herein illustrated and described without attempting to show all of the various iormsland modifications in which my invention might be embodied.

Having thus described my invention," what I claim as new and desire to secure by Letters Patent, is: i '1. An electric controller comprising an electro magnet provided with a plunger core, an armature for said magnet, a resistance, means positively .connected with and controlled by the armatureto permit the cutting out of said resistance step by step, and means operated by the plunger coreto return said cutting out means to its normal position when said magnet is deenerglzed.

2. An electric controller comprising an electro magnet pr0vided:with a plunger core, an armature for said magnet, a resistance, a plurality of circuit closing fingers, means positively connected to, said armature to successively re lease said fingers to cut out said resistance step by step, and means operated by the plunger core for simultaneously rendering all of said fingers inoperative.

Airelectric controller comprising an electro magnet provided with a plunger core, an armature for said magnet, 21 resistance, a plurality of circuit closing fingers, means positively connected to said armature to successively release said fingers to cut out said resistance step by step, means for controlling the intervals between the successive operaiionp of said lingers, and means operated by the plunger core for simultaneously rendering all of said fingers inoperative.

4. An electric controller comprisingan electro magnet provided with a plunger core, an armature for said magnet, a resislance, a plurality of circuit closing fingers, means i.o hold said lingers normally inoperative, connections belzwcen said holding means and said armature, whereby the lingers are successively released to cutoutthe resistance step by step, and means operated by the plunger core to simultaneouslyrender all of said fingers inoperative.

An electric controller comprising an electro magnet provided with a plunger core, an armature for said magnet, a resistance, a plurality of circuid closing fingers, a plate connected to said armature and engaging the contiguous ends of all of said'fingcrs, whereby movement of the plate permit, said lingers lo successively drop to cut out said resistance step by step, and means operated by the plunger core to simultaneously render all of said lingers inoperative.

(S. An electrical controller comprising an electro magnet provided with a plunger core, an armature for said magnet, a resislancc, a plurality of circuit closing fingers arranged in sets, means connccicd to the armature lo allcrnalcly release the fingers of each set to cut out said 1' stance step by slcp. and means operated by the plunger core tor alcd by lhc plunger corc to simultaneously render all of said lingers inow-ralivc.

5. An clcclrlc controller comprising an electro magnet provided will] a plunger core, an armature for said magnet,

a resistance, a plurality of circuit closing fingers arranged in sets, a plate interposed between the sets of fingers and engaging all of them, the engaging portion of the plate on one side being wider than the corresponding portion on the other side, whereby the fingers of each set are alternal'cly lclcascd to cut out said resistance step by step, and means operated by the plunger core to simultaneously render all or said fingers inoperative.

ll. An electric controller comprising an electro magnet provided with a plunger core, an armature for said magnet, a resistance, plurality of circuit closing fingers, means positively connected to the armature to successively release said fingers to cut out said resistance step by step, and a pivoted member connected to the plunger core for simultaneously rendering all of said fingers inoperative.

10. An" electric controller comprising an electro magnet provided with a plunger core, an armature for said magnet, a resistance, a plurality of circuit closing fingers, means to hold said fingers normally inoperative, connections between said holding means and said armature. whereby the lingers are successively released to cut out lhc resistance step by step, and a pivoted member connected to the plunger core to simultaneously render all of said fingers inoperative. 1

11. An electric controller comprising an electro magnet provided with a plunger core, an armature for said magnet; a resistance, a plurality of circuit closing lingers arranged in sets, means connected to the armature to alternately release the lingers of each set to cut out said resistance step by step, and pivoted members connected to the plunger core to simultaneously render all of said linrendering all of said lingers inoperative.

13. An electric controller comprising an electro magnet provided with a plunger core, a main contact carried by said core, an armature, a resistance, a plurality of circuil closing fingers, means positively connected with said armature to successively release said lingers to cut out the resistance step by step,'and means operated by the plunger core for simultaneously rendering all of said lingers inoperative.

14. An electric controller comprising an electro magnet provided with a plunger core, an armature for said magnet, 11 resistance, a plurality of circuit closing lingers, a plate connected to said armature and engaging the contiguous ends of said lingers, whereby movement of the plate permits said fingers to successively drop to cut out said resistance step by step, means connected to said plate to regulate the speed of movement thereof, and means operated by the'plunger core to simultaneously render all of said fingers inoperative.

1". An electric controller comprising an electro magnet provided with a plunger core, pivoled armatures for said magnet provided with'counterweights, a resistance, a plurality of circuit closing lingers, a plate connected to said urmatures and engaging lhe contiguous ends of said lingers. whereby movement of the plate permits said lingers to successively drop to cut out said resistance step by step, a dash pot having its piston connected to said plate to regulate the speed thereof, and means operated by the plunger core to simultaneously render all of said lingers inopcrallvc.

1G. A n cleclric controller comprising an electro mugneli, a resistance, a main contact, a plurality of conluct lingers, means [or supporting said contact lingers in normally inoperative posilion, and means operated by said magnet to operate said main conlzlcl and subsequently lo successively withdraw the supporl. from said lingcrs lo cut out said main contact and subsequently to successively with draw the support from said fingers to cut out said re sistance step by step, and means to simultaneously disengage all of said fingers when said magnet is deenergized.

I 18. An electric controller comprising a motor. a resistance, a main switch, contact fingers, an electro magnet having one of its poles divided, a plunger core forming the other pole of said magnet, a plurality of pivotally hung armatures. means whereby the raising of saidcore closes said main switch and causes an increase of the magnetic force of said magnet to operate said armatures. and means operated by said armatures for successively releasing said contact fingers to cut out said resistance step by step.

19. An electric controller comprising a motor, a resistance'therefor, a main switch, contact fingers, an electro magnet having one of its poles divided, a plunge'r core forming the other pole of said magnet, an armature, means whereby the raising of said core closes said main switch and causes an increase of the magnetic force of said mag net to operate said armature, means moved by said armature to release said contact fingers intermittently to cut out said resistance step by step, and means for controlling a the speed of :said armature.

20. An 'eiectric controller comprising a motor, a resistance therefor. a main switch, a spring actuated contact fingers, an electro magnet provided with a plunger core, an armature for the magnet, means whereby the raising of said core closes said main switch and causes an increase in the magnetic force of said magnet to draw up said armature. means connected to the armature and moving therewith to release said contact fingers intermittently to cut out said resistance step by step, means for controlling the speed of said armature, and means connected to the core to simultaneously raise all of said fingers and break their connection when the magnet is deenergized.

21. An electric controller comprising an electro magnet provided with an armature, a resistance, a plurality 0t circuit closing fingers provided with arms or extensions. a plate to engage said arms or extensions, connections be tween said plate and armature, and automatic means for simultaneously moving all of said arms or extensions out of the plane of movement of said plate and in a position to be engaged thereby when said magnet is deenergized.

In testimon whereof, I have hereunto set.my hand this th day of December A. D.. 190-1.

ARTHUR F. HANDY. In presence ot' IIowann F. Bannow, E. I. OGDEN.

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