US1886435A - Signal - Google Patents

Description

" NOV- 8, 193.2f o.- L. yl'NcENT SIGNAL Fld oct. 1o. 1927 6 rsnee-sneet 1 iHH Nov. 8,. 19312.

o. VINCENT SIGNAL Filed oct. 1o. i927 6 Sheets-Sheet 2 Nov. s, 1932. o, L, VINCENT 1,886,435

SIGNAL Filed 001'.. lo. 1927 -6 Sheets-Sheet 5 l@ L L WHl l L HH H] f 08". 67

lill '65 69 65 l l l l Lum MHH i gi;

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Nov. 8, 1932. I o. L. VINCENT 1,885,435

SIGNAL I -Filed 09h10. 1927 s sheets-sheet -4 HELHY CLWTHGS Nov. 8, 1932. o. L. VINCENT 1,886,435

` SIGNAL v Filed oct. L1o. 1927 e sheets-sheet 5 Nov. 8, 1932. o. L. VINCENT SIGNAL Filed 001;. l0. 1927 6 Sheets-Sheet 6 fave/i521' Orl/Jbl.

Patented Nov. 8,' 1932 UNITED STATES PATENT OFFICE CRVILLE L. VINCENT, F CHICAGO, ILLINOIS, ASSIGNOB, BY'LIESNE ASSIGNMENTS, TO CONSOLIDATED SIGNAL COMPANY, A CORPOBA'IION 0F ILLINOIS Brenna Application tiled October '10, 1927. Serial No. 225,818..

This invention pertains to crossing gates,

and more particularly 'to automatic and multiple safety gate and signal systems.

Much diculty has been found in Dproviding a satisfactory crossin barrier. uch of the diiiiculty has been in igh cost of a satisfactory unit and its actuation. Many are automatic or semi-automatic, and to be practical from a commercial standpoint must be posilo tive and not easily put out of order. Manual barriers are expensive in upkee and are not always operated in time to be e ective. Then too, when barriers are used, they are often run into, damaging or destroying them so that much expense is-necessary'for re air.

y t t is therefore an object of this invention to provide a crossing gate provided with signals operable in predetermined sequences with respect to said gate. i

Another object is to provide barrier construction efective to provide safety means for a crossing or the like, yet vone `which' is yieldable under impact and/or obstruction.

Still another object is to provide a crossing barrier having delayed return operation after the controlling mechanism has been actuated to return said barrier to inoperative position.

A further object is to provide crossing. protectionand warning signals operative either 3o automatically or manually.

A still further object is to provide barrier construction having cushioning means for absorbing shocks incident to operation or use andone which fulfills all requirements of manufacture and service.

With these and various other objects in view, the invention consists of certain novel features of construction and operation as will be more fully described and particularly pointed out in the specification, drawings and claims appended hereto,

In the drawings, wherein like reference characters are used to designate like parts- Figure 1 is a side elevation of a crossing gate unit with the gates in raised position;

Figure 2 is an` end elevation of Figure 1;

Figure 3 is a sectional elevation of Figure 2 with the gates omitted, the same being taken substantially in the plane as indicated by the line3-3 of Figure 2;

Figure 4 is a sectional elevation of Figure 1 with the gates omitted, the same being taken substantially in the plane as indicated by the line 4-4 of Figure 1;

Figure' 5 is a plan view taken substantially in the plane as indicated by the line 5-5 g of Figure 4; l

Figure 6 is a sectional plan 'showing the operating motor. unit together with the switch control elements, this figure being taken substantially in the plane as indicated -by the line 6-6 of Figure 4;

Figure 7 is a side elevation of the gate brake unit;

Figure 8 is a sectional lan 'takensubstantially in the plane as in icated by the line 8--8 of Figure 7;

Figure 9 is a fragmentary side elevation of a modified form of the gate actuating mechanism shown in Figure 1;

Figure 10 is a detail of Figure 9 taken at right angles thereto and showing the relation between the arts of a rack and pinion control unit for t e gate; y

Figure 11 is a fra entary side elevation of a modified form o rack and pinion actuating mechanism;

Figure 12 is a diagrammatic representation of a pair'of gate units for a railroad crossing and the electrical connections therefor;

Figure 13 is a diagrammatic representation of a modified form of wiring for a gate' unit;

Figure 14 is a diagrammatic `sectional side elevation of a modified form of barrier with the gate arms omitted;

l Figure 15 is an enlarged elevation of a form ofmechanical barrier return positioning mechanism; and

kFigure 16` is a diagrammatic re resentation of a modified form of wiring or a gate unit employing a reversible motor. ,Referrng now more particularly to the iirstmodiication illustrated in Figures 1 to 8 inclusive, the unit consists of a standard or housingy 20, upon which is rotatably mounted a gate carrying head 21 having pivoted thereto gate means 22 and 23, the head 21 serving also to carry-a housing 2 4 in which is disposed a brake cylinder 25. Member 21' or barrier tionwhere'it willbe disposed across the road- 22 'in its lowered position to `maintain the same in itslimited horizontal lowered posi' tion. Gate 22 being preferably longer than gate 23 is used as a barrier for the vehicle road while gate 23 is for the sidewalk or passenger road, and either or both of these gates may be provided with lights or signals 28. Gate 22 is of course provided with a counterweight 29, and the lower portion of this gate may well be adapted to have contact with the stop 30 disposed on the housing orjsandard 20 for limiting the raised posit-on of the gates.A

Within the housing 20 is mounted a motor and switch unit 31 adapted to control or operate the gates. This unit consis'gs of a motor 32 connected through suitable gearing, such as the worm and wheel 33 and 34, to a jack shaft 35, which shaft is connected through suitable gearing such as the worm and Wheel' 36 and 37, to a shaft 38, it being understood of cpurse that jack shafts 35 and 38 are carried in suitable bearings, such as 39 and 40, disposed ina frame 41. Shaft 38 has disposed at one end thereof a crank 42 or a disc to which a link 43 may be eccentri` cally pivotally connected, said link in turn being pvoted to a suitable cross head 44 through members 45 and 46. The cross head may be circular in section and adapted to reciprocate in a 'cylindrical track or sleeve l47 disposed in the upper part of the housing 20, said sleeve 47 being so mounted as to be capable of rotation on bearings 48 disposed betw2en the sleeve and a part 49 of the hous- In 'the upper part of the housing, bearings 50 may also be provided, suitably spaced and positioned with respect to the sleeve, on the upper part 51 .of said housing. Spring segments 5 2 and 53. surrounding the sleeve may be anchored as at '54 and 55 to the housing -20 and as at 56 and 57 to the sleeve47 in order Ato provide for means for allowing pivoting of the gate and returning the gate to initial sition that is,'to such a posiway, should s aid gate be moved out of barrier -position by any object or obstruction.

Itis understood of course that the sleeve '47 is iixedly connected to the head 21 which supports, by means of suitable bearings at 58A and 59, the gate shafts 60'and 61. Shaft 61 is provided with'a pinion 62 adapted-to be operated by a rack 63 which is attacliedto the 'i cross-head 44 by meansof a link or rod 64 so connected, as by the pin and lslot connection 264, that it has rotatable movementwith respect to said cross-head. Loosely mounted on .theshaft 61, there is another pinion 65 connected tothe pinion 62 by .means of a coil spring 66. Pinon 65 is in engagement' with one side of 'a double rack 67, the other side of which engages a pinion'68 secured to the' shaft 60. Back 67 is provided with an ex# tension or link 69, one end of which is connected to a spring-pressed disc, piston or vspider 70 of the brake 25. This brake cons'sts ofa cylinder 71 acting as a guide or track for the piston 70 and by-passes 72 and 73 controlled by valves'74 and 75. T hese bypasses communicate withv the cylinder at their lower points 76 and 77 in substantially the same horizontal plane, but at their upper points 78 and 79, they communicate with the cylinder on opposite sides of the piston 70 when said piston is at the top of its travel, it being understood of course that the cylinder on both sides of the piston is provided with a fluid acting as a brake medium. The action of the liquid to effect braking operation is that found` in an adjustable dashpot; assuming the pis. on 70 to be in the position shown in Figure 7 downward movement of the piston rod will cause movementv of the piston downwardly, forcing the liquid through the by-pass 72 to a point above the piston, the fiow being regulated by the valve 74. Con-- tinued downward movement of the piston after it has passed the point 79 causes the bypass 73 to function to supplement tliebypass 72, the valve 75 controlling the ow Y through the by-pass 73. A quick reversal is prevented by the spring shown beneath the piston 70, which spring'will act as a cushion should the movement Vof the piston rod 69 be reversed quickly; Upward movement of the. piston 70, through the by-passes 72 and time when the piston 70 passes the point 79, at which t`me the by-pass 73 is cut out and only the by-pass 72 functions, causing a re'- tarding-movement of the piston and piston rod.

It will of course be appreciated that the cylinder 71 is provided with a top or cap 80 threaded to the cylinder in oil-tight relation and the lower end of said cylinder is provided with a suitablestuiing box or gland 81 similarly screw-threaded as at 82 to said cyl# inder, through which gland the piston rod. or link 69 passes.

The shaft 61 is provided at an outer end therefore, causes by-passing 73, until the v with a connection 610 adapted to have iixed -orsliding contact with a switch element 611 for tlievpurp'ose of controlling the lights 28.

The jack shaft 38 is provided vwith switch elements, one of said elements 83 being'substantially circular. andprovided with a pro- 85, this element 83 having constant electrical -jection 84 normally in contact with the finger connection with one terminal of the motor 32. A

Another finger 86 is provided which is adapted to be contacted by Alug or rojection 84 v upon predetermined rotation o -the element 83. Another motor element 87 is provided having constant electrical contactwith the same .terminal of-the motor 32'with which switch element 83 has contact. Member 87 less than the peripheral length of the lug 84 for the purpose of preventing break in the motor circuit during one cycle of operationA of the assembly.

Another switch element 91 is provided on the shaft and is connected to one side of a circuit controlling the lights 28, said element being substantially circular and provided withasingle notch 92 disposed, when the gates are in raised position, in way of a switch finger 93 so that thereis n" connection between said inger and the element 91. Though element 91 is shown with only one notch, it causing a continuing lighting of the lights for a period, it will be appreciated that said eieinent may just as readily be-provided with a plurality of notches forming a plurality of lingers to cause the lights to be lighted intermittently, or iiashed, as in the winking form of signalling. An element 94: is provided having a plurality of lugs or fingers 95 adapted to be moved into successive Contact with the finger 96 in order to operate the signal or bell 26, it being understood that elementr94= is in constant connection to one'side of the bell. If desired, the relay may' be used to directly operate either or both lighting and audible signals thereby eliminating switch elements and connections.

It will then be seen that when the gate is in lowered position blocking a road, if it is run into or hit in any manner, due to the pivotal connection of the sleeve 4'( with the standard 20, the gate may be rotatedsubstntially 90, it being returned to the original position by means of the spring elements 52 and 53. And as clutch' means 103 may be provided for the shaft 61, should the gates be let down upon any object, they will have no tendency to crush the object but will remain in the pesition in which they have been stopped. 1t will l also be seen that there is a flexible connection between the gates 22 and 23 through the spring augmenting eushioning'action, and in return position, of course, the speed of return of the gates may be readily regulatec through the brake member `25, preventing slamming of said gates. e.

Referring now more particularly to Figure 9, itwill be understood that the essential elements are substantially the same-as already described, the only difference being that instead of gate 100 being connected directly to the shaft 61, said shaft carriesa pinion 101 in contact with a rack 102 carried by the gate- 100, this gate, it being understood, being provided with the usual counterweight 29. The gate then by means of its balanced relation through the rack and pinion-readily operates to open. and closed position. A slight over-l balancing causes the raising or lowering of overtravel, due to inertia, where there is a sudden reversal or stopping of the operating mechanism. Figure 11 illustrates a mounting between the gate 100 andthe pinion .101, using a rack 302 and/or 303 angularly dissaid gate and is advantageous in permitting posed with respect to the longitudinal direction of the gate for the purpose of permitting a different degree of delay in starting movement of the gateafter the actuating anechalnism is ut ino eration aswell as rovidin diderent time intervals in other operations between the gate and its actuating mechanisms.

Further, the modification shown in Figure 9 provides the rack and pinion connection in order that in operation to lower the gates, the pinion 101 will revolve in a counterclockwise direction, having the effect of extending the gate 100 so that should it be stopped in its downward path, after the path of movement of the gate is unblocked, said gate will assume a lowered position across the road.

Referring now to Figure 12, 150.repre sents railroad tracks having a crossing such 'as a road 151, gates 22 being disposed on either side of said crossing. Although only one gate is shown'on either side of the crossing, it is to be understood that they may be provided in multiple, but as .the wiring of such asystem would be .merely duplications of thatv shown and similarly numbered. the

present showing is deemed suicient for illus-- trative purposes. As already described, the units comprise the motor and switch elements for their operation connected in a manner as already described. The conductor 152 is connected to one side of the track relay, which in the system disclosed is normally open, said conductor being connected to one side of a signal 153 and also to one side Aof a ndoublethrow relav 154, the other side thereof being connected through .conductor 155 tothe other side of thesignal 153 and also through conductor 156 to the negative terminal of a source of energms'uch as battery 157, the other side of said battery being connectedthrough conductor 158 to conductor 159 in'tur'n connected to the other side of the track relay circuit. Conductor 159 is connected to a normally open hand switch 160 in turn connected to conductor-152 to establish coptact with one side of the relav 154. The positive side of another source of energy is connected to the conductor 161 conrie nected through the switch. 162 with conductor 163l in turn connected tothe switch elements 96. 93 and 89 of the motor switch unit, the Conductor 161 being connected through the conductor 164. through switch 165 to conductor 166., in turn connected to the. switchV relements 89, 93 and 96 of the other gate unit. Elements 83 and 87 are connected by meansof conductors 167 and i168 with conductor 169 connected to one side of the motor 32, the other side of said motor being connected to conductor 170 connected through switch 162 to the negative side of the source of energy supplying current to conductor 161.

Conductor 17 0 is also connected to one side of the lights 28, the other side .of said lights being connected through conductor 171 to the switch element 91. Switch element 94 is connected by means of conductor 17 2 to one side of the signal or bell 26. the other side of said bell being connected through conductor 173 to conductor 170. Similarly, the elements 83 and 87 of the other unit are connected through conductors 167 and 168 with voit the lights 28, the other side being connected through conductor 171 with the switch element 91. Switch elements 96. 93 and 89 are connected through conductor 166 and switch 165 to conductor 164 and the positive source of current through conductor 161.

Relay 154 consists vessentially of insulated arms or switch elements 177 and 178 normally in contact with contacts 179 and 180, t'he Contact. 179 being in connection with the finger 86 through conductor 181. Arms 177 and 178 are connected. through conductors 182 and 183 with conductor 184 connected to conductor 164, and Contact 180 is connected with the element 86 of the other unit through conductor185. When the solenoid the conductor 188. a part of said current is' relay is energized. arms 177 and 178 'are adapted to move in contact with contacts T86 'and 187. said contacts being connected through conductors 188 and 189 with fingers V of the respective units. Multiple connections mav be made from the motor circuit to the motor 32 and the lights 28 for lighting the lights when the motor circuit is com- Dlet'ed. This may be done. b v inserting the conductor 20G between the conductor 188 and the conductor 171, and inserting` a conductor 202 between the conductor 169 and the conductor 171. In this manner, as soon as the relay has been closed supplying current to supplied to the switch element"83 and thence to the motor and another part of vsaid current is supplied to the conductor 171 to the conductor 200 and thence to the lights 28. This does not ailect the switch element 91 or thefswitch element 87 as these are open and the current is supplied to the switch element 83. The conductors 200 and 202 are really not necessary to an operative circuit as will readily be appreciated.

In operation, when a train enters a block, the normally open track relay is closed, completing the circuit and energizing the relay 154; that. is, current will enter conductor 152, will pass through conductor 190 to the signal 153 actuating the same, passing through conductor 191 to conductor 156 through the battery 157 and through conductors 158 and 159 to complete the track relay circuit. Current will also pass along conductor 152 to energize the relay 154 and back through conductors 155 and 156 back to complete the circuit through the track relay circuit, as already described. It will of course be appreciated that when the relay 154 is energized, arms 177 and 178 are moved into Contact with contacts 186 and 187 sok that current will pass from conductor 161 through conductor 164, throughconductors 184 and 182, through arin 177 to contact 186, through conductor 86 to switch element 85, through switch element 83 to conductors 167 and 169 to the motor 32 and from the motor through conductor 170 back to the negative side of the actuating circuit.

It will be understood that motor 32 .is geared to the shaft. 38 in such a manner that to lower the gates from raised position or to raise the gates from lowered position means that the shaft 38 revolves only 180.

TVhen the motor revolves. of course. elements 83, 87, 91 and 94 are moved so that connectionI is broken between the finger 85 andthe lug 84. However, Contact is closed between the element 87 and the finger 89 so that current passes from the conductor 161 through conductor 163 and through elements' 89 and 87 and wire 168 to wire 169 to complete the motor circuit, as already described.

Contact is also made between the finger 93 and the element 91 causing current to flow from conductor 163 through Enger 93 and element 91 to conductor 171 through the lights 28 and back through the conductor 170 to the negative side of the source of energy. The projections 95 on the element 94 will of course make intermittent connection with the finger 96 so that the current will pass through conductor 163, through finger 96, successively through fingers 95, through element 94, through conductor 172 to one side of the signal 26, causing intermittent actuation of the same, the current passing from the other side of said signal through conductor 173 back to conductor 170 to complete the circuit. also pass from conductor 184 through' conductor 183,'through switch arm 178 and contact 187 to conductor 189 connected to the finger 85 of the other unit, causing actuation of said other unit in a manner similar to that as already described. It will be appreciated that the apertures 88 in element 87 The current willY are so proportioned with respect to the lug 84 on the element 83 as to prevent feedback to the other gate and so to. prevent actuation of one gate without the other.

' It will be understood that after the train has passed out of the block, deenergizing the relay 154, arms 177 and 178 are moved into contact with the contacts 179 andv 180. By this time, however, lug 84 has revolved to contact with the lfinger 86 so that current is passed from arm 17 7 to contact 179 through conductor 181 and through nger 86 through lug 84 and element 83 to complete the motor circuit through conductor 169, causing actuation of the same to move the gate, it being understood that the crank 42 is diametrically in opposed position as that illustrated in Fi re 4.

n a similar manner, contact is made through finger 89 and element 87 as the opposite notch 88 has been moved in way of linger 89 so that the gate will be raised to its upright or oli-duty position, the same'actuation occurring in the other barrier unit as described above for initial actuation.

The gates may be .operated manually through switch 160, if so desired, as current may be passed from source J157 through conductor 159 and through switch 160 to conduct-or 152 to energize the relay, causing actuation in a manner as already described.

As already pointed out, the track relay is of the normally open type but it is contemplated that tlie normally closed e of track circuit may be used. Also it wi be appreciated that the circuit as described was one for direct current thoughit is contemplated that alternating current may be just as readily used.

The system of construction and operation described may be somewhat varied to simpli'fy the construction of the control circuit, one form of such variation being indicated in Figure 13. In this system, the switch elements 91 and 93 controlling the light circuit have been eliminated with a consequent reduction of parts and change in the motor ciris connected to one side'of signal 26 through i conductor 172, the otherside being connected 38 through conductors173 and 17 0 and switch cuit, thoughthe circuit control for the relay 154 may remain as abovedescribed. ln ,this` form, assuming like parts to be in position de-l scribed for Figure 11, the positive side ofthe source of energy supplied through conductor 161 is connected through switch 162 (shown open, but normally closed) to conductor 163 connected -to switch fingers 96 and 89, out ofv contact with elements 94 and 87. `Element 94 162 to the negative side of l'the 'source of energy of 161. Element 87 is connected to one side of the motor 32 through conductor 168. the other. side of said motor being-connected to conductor 170. Element 87 is also connected through conductor 202 through the between elements and 83 as before with a depending tube battery -of lights 28 to conductor 170. Coni a portion of element 83 connectedthrough conductor 167 and motor 32 to conductor 170.l

Finger 85 is also connected through conductor 200 and lights 28 with conductor 170. So that in operation, when the relay supplies, current to contact 186, it passes to the motor through conductor 188, elements 85, 83, and conductors 167,168 and from the motor to conductors 170, completing the circuit, it being -understood that current is supplied through 161, 164, etc. as before. Current also passes through conductors 188, 200 to the` lights 28. Starting the motor breaks contac an makes contact between elements 89 and 87 and 96 and 94, actuating the signal 26 in the latter case. Inthe former case, current passes through conductors 161, 163, elements 89, 87, conductor 168 to complete the motor circuit, and also passes through conductor 202 to cornplete the light circuit. Exactl a vsimilar operation occurs in operating th movement of the element shaft 38, the relay then supplying current through contact 179, as previously described.

Vith the construction above described, the I motor 32 is actuated in only one direction. However, if a reversible motor be used, the system and construction may be altered and simplified as shown in Figures 14 and 16.. Re-

ferring first to the construction of the barrier unit, the essential parts of the gates, lights, standard, etc. are the same; that is, it is only necessary to change the motor unit and its connection to' the transverse gate shafts 60 and 61 (Figure 5). This motor unit includes the trame 331 supporting the motor 332 and properly bearinged shafts 335 and 350, bearings therefor being indicated at 351 and 552 and 353. The motor is geared toV shaft i335 through the worm and gear 354 and 355a'nd the shaft335 is in turn geared to shaft 350 through gear wheels 356 and 357 so that a ,movement of rotation is imparted'thereto which in turn is transferred to shafts 58 and 59 through reversible worm and gears 358, 359and 360. Shaft 350 is preferably carried through a bearing in the head 21 for the reception of mechanical bell operating mechanism 362 cooperating with gong 363. It is further understood that jackshaft 338, actuated by worm 336 on shaft 335,- carries the and bearings. This may be accomplished.- as shown in Figure 15 by providing the head 2,1 400, replacing sleeve 347, to which is fixcdly attached a crown gear t construction, the turning sleeve and Spring mechanism 347 and 52 and' 53'may be varied somewhat to eliminate, the coil springs 'and 86, linger 85 being shown in contact with a e gates after v switch element in a manner similar to shaft 401 preferably provided with teeth 402 at the quadrants. A reciprocating cooperating sleeve 403 has teeth 404 cooperating with the spaces between teeth 402 and may be provided with shoulders 405 between which and the shelf 449 of the standard', coil springs 406 'are disposed. So that should the barriersbe rotated, the springs will be depressed until the barriers are released. Then the collar 403 will be forced against collar 401 and camming action between the teeth will return the barrier to crossing` protecting position. A Of course the parts may be varied; for instance,l

the head may be adapted to be moved upwardly over crown gear teeth to return by gravity and/or springaction, in which case a sliding connection is provided in shaft 350.

The motor circuit may be varied as shown in Figure 16 wherein fa four-wire motor is il-- lustrated, it being contem lated however that any motor may be used, t e above ty e being described as illustrative lof one orm of adaptation. In this circuit, a normally energized relay 510 is shown connected through conductors 511 and 512 with the rails of the block 513 of the track, the road 515 crossing `through the block. The armature 55.1 of the .relay 510 normally connects contacts 516 and 517 connected respectively through conductor andswitch 519 with positive side 561 of .y asource of energy, and through conductor motor 536 through conductors 537 and 538, to

520 with switch element 521 disposed on the motor jackshaft 338 -shown in Figure 14. Other contacts 522 and 523 of. the track relay are respectively connected to conductor 518, and through conductors 524 and 525 to switch element 526 and the solenoid 527 of a relay 529, the other side of the solenoid being connected through conductors 530 and 531 and through the switch 519 with the negative side 532 of a source of energy. Contacts 533 and 534 are'connected to one side of the say run the barrier ,to up position, and the contacts543 and 540 are connected through conductors -541 and 542 to the other side of the motor, to say run the barrier to down position. The armature 539 of the relay is in separated insulated parts, side 544- oscillatmg between contacts 534 and 540, being connected through conductors 545 and 546 with switch fingers 547 and l548 cooperating with elements 526 and 521. The other part `549 oscillating between contacts v533 and 543 is connected through conductor 550 with conductor 531.

In operation then, a train entering block;

513'deenergizes relay 510, causing the armature 551 to establish connections between ' contacts 522 and 523, termed down contacts, causing current to How from 561 through conductors 518 and 524, elements 526 and 547 to armature part 544. The current also asses throu h conductor525 to energize so enoid 527; o relay 529, the current passing through ative by t conductors 530 and 531 through switch 519 to the source through 532. Energizing the relay establishes connection through part 544 -contact with the up contacts 533 and 534.

Current then passes through conductor 520,

elements 521 and 548 to conductor 546,

through part 544 to contact 534 andto the motor 536 through conductor 538, reversing the motor to raise the barrier, the currentl returning through conductor 537, contact 533, part 549 and conductors 550 and 531 to the source. This actuation continues until cir- `cuit is broken `between elements 521 and 548 due to rotation ofthe jack shaft. The audible and visible signals are actuated as before, and

the signal is reset after the last described operation pending other actuation.

It will beseen from the above that a very desirable signal barrier is provided, and it is to be understood that I do not wish to be limited by the exact embodiments shown, which are by way of illustration and not limitation, as other and various forms will of course occur to those skilled in the art.- I'claim: 1. In a system of the character described,

the combination of a track circuit, a rela in said circuit-and controlled by a train a ecting said track circuit, a normally inoperatlve barrler motor, a source of energy, a relay between said source of energy and motor normally disconnecting said motor and source l of energy said first named relay being operhe train affecting said` track circuit to control said second named relay whereby said source of energy is connected to. said barriermotor for operating ,said barrier motor,

and means operated by'said motor for oper- .ating the same in either'of two directions.

2. In a system of the character described, the combination 'of a track circuit, a rela in said circuit and controlled by a train a ecting said track circuit, a normally inoperative barrier motor, a source ofv energy, a relay between said source of energy and motor normally disconnectingsaid motor and source of energy, said first named relay being operative bythe train affecting said track circuit '.tol control said second named relay whereby said source of energy is connected to said barrier motor for operatin 'said barrier 'motor in either direction, an means in the circuits of said relays and operated by said motor` for rendering saidl source of'energy inoperative after a predetermined period. v 3. In a railway gateoperating system, the

combination of a track block, a gate having a reversible motor controlling operatlon thereof, a normally energized and a normally deenergized relay, a circuit connecting saidI relays, said normally energized relay being u connected to said block and being adapted to be deenergized upon entry of a vehicle into said block, said relay remaining deenergized f so long as a vehicle is within saidblock, a source of current supply, a normally closed switch element in the circuit between said relays, said switch element being operated by f said motor, said normally deenergized relay being-adapted to-control said motor whereby when said first named relay is deenergized said source of current supply is connectedto said second named relay to energize the same, the closing of said second named relay connecting' said source of current supply to said motor through said normally closed switch element to operate said gate to closed position and to operate said normally closed switch element to open position to thereby disconnect said source of current supply from said motor to render said motor inoperative. 4. In a railway gateoperating system, the combination of a track block, a gate having a reversible motor controlling operation thereof, a normally energized and a normally deenergized relay, a circuit connecting said 235 relays, said normally energized relay being connected lto said block and ada ted' to be deenergized upon entry of a vehic e into said block, a source of current supply, a normally open and a normally closed switch element 1J in the circuit between said relays, said switch elements being operated by said motor., said normally deenergized relay being adapted to control said motor whereby when said first. Vnamed relay is deenergizedl said source of current supply is connected to said second named relay to energize the same, the closing of said second named relayv connecting said source of current lsupply to said 'motor through saidnormally closed switch element "o to operate said gate to closed position and to cause said normally closed switch element to bemoved to open position to thereby dis- .connect said source ofcurrent supply from said motor to render said motor inoperative,

operation' of said motor to close said gate operating said normally open switch element to closed position, said rst named relay being energized when said block is cleared by exit no of vehicles therefrom whereupon said source of energy'is disconnected from. said second named relay deenergizing said relay, said msource* ofgenergywbgng, connected through said firstA named reland sai nor'mall l open switch element tosaid motorthroug said second named relay to operate the gate to open position and to cause said normally p open switch element to be moved to open position and said normally closed switch element to closed position to thereby disconnect said motor from said source of energy.

5. In a railway gate operating system, the combination of a track block, a gate having a reversible motor controlling operation thereof, a normallyenergized and a normally deenergized relay, a circuit connecting said relays, said normally energized relay being connected to said block and being adapte v to be deenergized upon entry of a vehicle into said block, said relay remaming deenergized so long as a vehicle is within said block, said normally deenergized relay controlling the direction of rotation of the reversible motor and when deenergized contacting with connections to operate the motor to open the gate, a source of current supply, means operated by said motor for permitting actua- `tion of said motor, ,said normally deenergized relay being adapted to control said Vinetor whereby when said"'"first named relayiis deenergized said source of current supply is connected to said second'named relay to energizeV the same, the closing' of said'second named relay connecting said sourceofcur-v rent supply to said motor through said means to operate said gate to closed position and to operate said means to disconnect said source of current supply from s'aid motor t0 render said motor inoperative.

, 6. ln arailway gate operating system, the combination of 'a track block, a gate having a reversible motor controlling operation thereof, a normally energized and a normally deenergized relay, a circuit connecting said relays, said normallyenergized relay being connected to said block and being adapted -to be deenergized upon entry of a vehicle into said block, said relay remaining deenergized so long as a vehicle is within said block, asource of current supply, means operated by said motor for permitting actuation of said motor, said normally deenergized relay being adapted to control said motor ,whereby when said irst f named relay is deenergized said source of cur- U5 v rent supply is connected to said second named relay to energize the same, the closing of said second named relay connecting said source of current supply to said motorthrough said means to `operate said gate to closed position Y and to operate said meansto disconnect said source of current supply from said motor to v render" said motor inoperative, said first named relay being energized whenisaid block is cleared by exit 'of vehicles therefrom whereupon said'source of energy is discon-` y.

nected from saidsecond named relay deenergizing said relay, said source of lenergy being connected through said first named relay and' l saidg means to said motor through said second normally deenergized relay controlling the direction of rotation of the reversible motor and when deenergized contacting with connections to operate the motor to open the gate, a source of current supply, means operated by said motor for permitting'actuation of said motor, said normally deenergized relay being adapted to control said motor whereby when lirst named relay is deenergized said source of current supply is connected to said second named relay to energize the same, the closing of said second named relay connecting said source of current supply-to said motor through said means to operate said gate to closed. position and to permit operation. of said means to disconnect said source of current supply from said linotor to render said inotcr inoperative.

8. In a railway gate operating system, the

combination of a track block, a gate having a` reversible motor controlling operation thereof, a plurality of relays, a circuit therebetween, one of said relays `being connected-to said block and being adaptedto be operated upon entry of a vehicle into said block, said relay remaining operated so long as a vehicle is within said block, a "source of current sup- 4 ply,means operated by said motor for permitting actuation of said motor, the other of said relays being adapted` to control said motor whereby operation of said first named y relay causes operation of said second named relay, operation of said second named' relay connecting said motor through said means to said source of supply to operate' said gate .t`o closed position and to permitj operation of said means to disconnect said source of current supply from saidmotor to render said motor inoperative.

A 9. In a railw gatecoperating system, the combination ofiytrack block, a gate having a reversible motor contro g operation thereof, a plurality of relays, a circuit therebe-- tween, one of said relays being connected to gized relay controlling the direction of rota-V said block and beingadapted to be operated upon entry of a vehicle into said block, said relay remainingA operated so long as a vehicle is within said block, said normally deenertion of the reversible motor and when deenergzed contacting with connections to operate the motor to open the gate, a source of current supply,vmeans operated by said motor for permitting actuation of'said motor` the other of said relays being adapted to control said motor whereby operation of said first named relay causes operation of said second named relay, operation Vof said second named relay connecting said motor and said source of sup- 'ply to operate said gate to closed position.

10. In a railway gate operating system, the combination of a track block, a gate having a reversible motor controlling operation thereof, a plurality of relays a circuit therebetween, one of saidrelays to said block and being adapted to be operbeing connected ated upon entry of a vehicle into said block,

said relay remaining operated so long as a vehicle is -Within said block, said normally deenergized relay controlling the direction of rotation of the reversible motor and when deenergized contacting with connections to operate the motorpto openthe gate, a source said first named relay causes operation of said second named relay, opera-tion of said second named relay connecting said motor` and said source of supply to permit operation of said motor, to move said gate td closed position and to operate said means to disconnect said source-of current supply from saidmotor to' render-said motor inoperative.

l1. In a railway gate operating system, the combination of a track block', a gate having a motor reversible controlling operation thereof, a relay, motor operating means, a circuit connecting said relay and motoroperating. means including a second relay, said relay being connected to said block and being-adapted to be operated upon entry of a vehicle into said block, said relay remainingn operated so long as a vehicle is within said block, a source of current supply, motor operated means Afor permitting actuation of said motor, said motor operating means being adapted to'control said motor whereby operation'of said relay causes operation of said motor operating means, said second relay being operatively associated with said motor operated means, operation of said motor operating means connecting said motor through said motor operated meansto said source of supply to permit operation of said gate to closed -(position and to operate said motor operate means to said source of current'supply from said motor to render said Amotor inoperative, said second relayl including means actuated by said motor operated means for reversing said motor to lift said gate.

12. In a railway gate operati/ngsystem,

the combination of a track block, agate having a reversible motor controlling operation l -said re thereof, a relay, motor operating means ina second-relay, a circuit connectin ayand motor operating means, sai relay being connected to said block and bein adapted to be operated upon entry of a vehicle into said block, said relay remaining operated so long as a vehicle is within said cluding block, a source of current supply, motor operated means for permitting actuation of said motor, said motor operating means be ing adapted to control said motor wherebyo'peration of said relay causes o eration of said motor operatin means, sai second re` lay being .operative y associated with. said motor operative means, operation of said motor operating means connecting said motor vto said source of suppl to operate said gate -to .closed position, lsai second rel-ay including means actuated by said motor o erated means for reversing said motor to lift said ate. g 13. In a railway gate operating system, the combination of a track block, a gate having a reversible motor controlling operation thereof, a relay, motor operating means including a second relay, a circuit lconnecting said relay and motor operating means, said relay lbeing connected to said block and being adapted to be operated upon entry of a vehicle -into said block, said relay remainin operated so long as a vehicle is Iwithin sai block, a source of current supply, motor operated means for permitting actuation of said motor, said motor operating mea-ns being adapted to control said motor whereby operation -of said relay causes o eration of said motor operatin means, sai second relaybeing operative y. associated with said motor operatlve means, operation of said mo- 'tor operating means connecting said motor to lsaid source of supply to operate said gate to closed position and to permit operation of said motor operated means to disconnect said source of current supply from said motor to render said motorinoperative, said second relay including means actuated by said motor operated means for reversing said motor to lift said gate.

' 14. In a railway gate operating system, the combination of a track block, a gate having a motor controlling operation thereof, a plurality of relays, a circuit therebetween, one

I of said relays being connected to said block and being adapted to be operated upon entry of a vehicle into said block, said relay remaining o rated so long as a vehicle is within said b ock, a source of current supply,

means operated by said motor for permitting actuation of said motor, the other of said relays being adapted to control said motor -whereby operation 'of said first named relay causes operation of said second named relay, operation of said second named relay connecting said motor through said means to said source of supply to operate said gate to closed position and'to operate said means to disconnect said source of current supply from said motor to render said motor inoperative, said first named relay being operated when said block is cleared by exit of vehicles therefrom whereupon `said source of energy is disconnected from. said second named relay, said source of energy being connected through said first named relay and' said means to said motor through said second named relay to operate the gate to .open position and to operate said means to disconnect said motor :from said source of energy.

15. In a `railway gate operating system, the combination of a track block, a gate having a motor controlling voperation thereof, va plurality of relays, a circuit therebetween, one

,of said relays being connected to said block and being adapted to be operated upon entry of a vehicle 'into said block, said relay remaining. operated so long as avehicle is within said block, a source of current supply,

means operated by said motor for permitting motor through said second named relay to operate'the gate to open position and to permit operation of said means to disconnect said motor from said source of energy.

16. In a railway Vgate operatingl system, the combination of a track block, a gate having a. motor controllingr operation thereof, a

plurality of relays, a, circuit therebetween, one

of said relays being connected to said block `and being adapted to be operated upon entry of a vehicle into said block, said relay remaining operated so long as a vehicle is within said block, a source of current'supply,

means operated by said motor for permitting actuation of said motor, the other of said relays being adapted to control said motor whereby operation of said first named relay causes operation of said second named relay, operation of said 'second' named relay connecting said motor and said source of supply to permit operation of said gate to closed position and to operate said means to disconnect said source of current supply from s aid motor to render said motor inoperative, said iirst named relay being operated when said block is cleared by exit of vehicles therefrom whereupon said source of energynis disconnected `from said second named relay, said source of energy being connected' through asl g motor operated means to disconnect said mo-l said first named relay and said means to said motor through said second named relay to' operate the gate to open position and to permit operation of said means to disconnect ing operated so long as a vehicle is within said block, a source of current supply, motor operated means for permitting actuation of said motor, said motor operating means being adapted to control said motor whereby operation of said relay causes operation of said motor operating means, operation of said motor operatin means connecting said motor through sai motor operated means to said source of supply to operate said gate to closed position and to operate said motor operated means to disconnect said source of current supply from said motor to render said motor inoperative, said relay being operated when said block is cleared by exit of vehicles therefrom whereupon said sourceof energy is disconnected from said motor operating means, said source of energy being connected through said relay and said motor operated means to said motor through said motor operating means to operate the gate to open position and to permit operation of said tor from said source of energy.

18. In a railway gate operating system, the combination of a track block, a gate having a motor controlling operation thereof, a relay, motor operating means, a circuit connecting said relay and motor operating means, said relay being connected to said block and being adapted to be operated upon entry of a vehicle into said block, said relay remaining operated so long as a vehicle is within said block, a source of current supply, motor operated means for permitting` actuation-of said motor, said motor operating means being adapted to control said motor whereby operation of said relay causes operation ofv said motor operating means, operation of said motor operating means connecting said motor and said source of supply to operate said gate to closed position, said relay being operated when said block is cleared by exit o vehicles therefrom whereupon said source of energy is disconnected from said motor operating means, said source of energy being connected through saidl relay and said motor operated means to said motor through said motor operating means to operate the gate to open position and to permit operation of said motor operated means to disconnect said motor from said source of energy.

block, a source of current supply, motor op- F erated means for permitting actuation of -said motor, said motor operating means being adapted to control said motor whereby operation of said relay causes operation of said motor operating means, operation of said motor operating means connecting said motor and said source of supply to operate said gate to closed position and to permit operation of said motor operated means to disconnect said source of current supply from said motor to render said motor inoperative, said relay being operated when said block is cleared by exit of vehicles therefrom whereupon said source of energy is disconnected from said motor operating means, said source of'energy beingy connected through said relay and said motor operated means` tov said motor through said motor operating means to permit operation of the gate to open position and to operate said motor operated means to disconnect said motor from said source of energy.

20. In a railway gate operating system, the combination of a track block, a gate having a reversible motor controlling o eration thereof, a plurality of relays, a circult therebetween, one of said relays being connected to said block and being adapted to be operated continually by a vehicle while in said block, a source of current, said one relay controlling Vthe flowl of current from said source, the second relay controlling the direction of rotation of the motor and means operated by said motor for permitting actuation of said motor until the gate is in closed position.

21. In a railway gate operating system, the combinationof a track block, a gate having a reversible motor controlling operation 15 thereof, a plurality of relays, a circuit therebetween, one of said relays being connected to said blockand being adaptedto be operated continually by a vehicle while in said block, a source of current, said one relay con- .trolling the ow of current from said source,

the second relay controlling the direction of rotation of the motor, means operated by said motor for permitting actuation of said motor until thegate is in closed position, and-motor operated means effective when the train has left the block -for permitting actuation of said motor until the gate is in open position.

22. In a railway gate operating systerl, the

combination of a track block, agate having.` I

a reversible motor controlling operation thereof, a relay, motor operating means, a

'circuit connecting said relay and motor operating means, said relay being connected to said block and being adapted to be operated upon entry of a vehicle into said vvblock, said relay rema' o rated so long as a vehicle is within sai b ock, means operated by said motor for controlling actuation of said motor, a source of current supply, said motor o rating means being adapted to control sai motor whereby operation of said re'- Y lay causes operation of said motor operatin means, said second relay associated with saiA motor operated means and controlled thereby, operation of said motor o rating means f connecting said motor to Asai source of supply to operate said gate to closed position, said second relay including means actuated by said motor lerated means for reversing said motor to said gate.

23; In a railway gate olerating system, the combination of a track b ook, la gatekhaving a reversible motor controlling operation thereof, la relay, motor operating means illyadapted to control said motor whereby operation ofsaid relay causes operation of said motor operating means, said second relay associated with saidmotor o rated means and controlled thereby, operation of said motor operating means connecting said motor to said source of supply to operate said, gateto closed potion, said second relay in cluding. means actuated by said motor oper'- ated means'for reversing said motor to lift Saiegi" a, eng sa; th

ara wa ga opera sy m, e combination of aytrack block a gate having a' reversible motor "contro g operation thereof, 'a relay, motor operating means in cluding a secondrelay, a circuit connectsaid relay and motor operating means, sai first named relay being connected to said vblock and being adapted to be operated by entry and exit of 'a vehicle into and from said block, means operated ly said motor for controlling actuation of sai of` saidA motor in either of two directions by co tor through said motor opera means.l

f Signed' lat-Chi Ilhnols 'Ithda --ofOctobenlM'go y o'avILLE n VINCENT.

motor, a source x of current supply, said second named relay` being actuated by said motor operated means for controlling said motor whereby operation of said second-named relay causes operation said source of supply to said moj

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