US1277569A - Automatic train-stopping device. - Google Patents

Description

GOOD STOPPING DEVICE.

PatentedSept. 3,1918.

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D. D. GOOD.

AUTOMATIC TRAIN STOPPING DEVICE.

APPLICATION FILED MAY v 19H.

Patented Sept. 3, 1918.

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AUTOMATIC TRAIN STOPPING 'DEVICE.

APPLICATION FILED MAY 19|4.

1 ,27'?,569, Patented Sept. 3, 19181;

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D. D. GOOD.

AUTOMATIC TRAIN STOPPING DEVICE. APPLICATION FILED MAYI, I914.

1 ,277,569. Patented Sept. 3, 1918..

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Agnommc TRAIN STOPPING DEVICE. APPLICATION FILED MAY I. 19H.

1,27,569@ Patented Sept. 3,1918

5 SHEETS-SHEET 5 -9' 80 M so 82, H EVH n H mm H n n n m min n n n L4 u in v :r \\]l 85 V U i u u U u U u Ivmwfldr DAVID D. GOOD, 0F PHILADELPHIA, PENNSYLVANIA.

AUTOMATIC TRAIN-STOPPING DEVICE.

Specification of Letters Patent.

Patented Sept. 3, 1918.

Application filed May 1, 1914. Serial No. 835,652.

To all whom it may concern:

Be it known that I, DAVID D. G001), a citizen of the United States, residing at #6203 Jefferson street, in the city of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Automatic Train- Stopping Devices, of which the following is a specification, reference being had therein to the accompanying draw- 111g.

My invention has relation to automatic train stopping devices wherein the stopping of a locomotive, trolley car, or other vehicle running on rails, is automatically effected by'means of an obstruction located adjacent to the track and coacting with the signal system and mechanism on the vehicle to stop the latter independently of the engineer, motorman or Signalman.

My invention has for its object the pro vision-of a novel train stopping device which is set automatically, by a passing train to stop a train following, and by means of a coacting signal system to prevent a train passing a danger signal.

My invention consists in the novel contruc'tions, combinations and arrangements of parts hereinafter described.

Throughout the accompanying drawing similar figures indicate similar parts.

Figure 1, represents a broken side eleVation of an engine equipped with a power and brake controlling device adapted to be operated by an automatic, tripping device. Toward the rear of the locomotive is shown a shoe which in turn operates an automatic tripping device.

Fig. 2, is a perspective view of the auto .matic tripping device constituting part of my improvement showing it in relative position to the track.

Fig. 3, is a side elevation of the movable parts of the automatic tripping device with the housing removed.

Fig. 4, is a top plan view of the mechanism shown in Fig. 2, omitting the electric latches shown in the latter figure.

Fig. 5, is a perspective view of the parts which form the shuttle bar.

Fig. 6, is an end elevation of the mechanism shown in Fig. 3, the electric latches being omitted.

Fig. 7, is a perspective view of the rocking shaft and its members shown in Figs. 3 and 4.

Fig. 8, is a perspective view of the oscillating plate and its members shown in Figs. 3 and 4.

Fig. 9 represents a top View of the track, the magnets in relative position and the electric circuits.

Fig. 10 is a horizontal view of a portion of the shuttle bar showing means of connecting it to the rod controlling semaphore or switch. In Fig. 1, #1 is a controlling valve on the forward part of an engine operative by my automatic tripping device. 2 is a shoe attached to the rearward part of the locomotive frame at 3. A knuckle joint is provided at 4 which allows the shoe to swing forward as the engine backs over the trip.

Fig. 2, shows the automatic tripping device with its housing attached to the ties at 5; the oscillating plate 6, in its normal position so placed and constructed that it will be turned downward by the shoe 2; the arm member 7, of the rocking shaft; the stop 8, in a position to actuate the valve and stop the next train; the shuttle bar 9, adapted to be connected to the rods which operate the signal systems; the housing cover 10 forming one of the journal covers.

Hereinafter, for the sake of brevity, the entire mechanism will be referred to as the trip and each portion of the mechanism will be known by the name by which it is first designated.

The rocker shaft is composed of the shaft proper 11, carrying the collars 1213 and 14 which serve toform the bearing portions 16 and 22 and to prevent horizontal motion in the journals (the latter being a part of the housing) the arm 7 on collar 14. which carries the stop 8; the plate 17 with its curved slot 18; and teeth 19 and 20 and the rectilinear post 21, all being permanently attached to each other.

Oscillating plate 6 has a split sleeve 30 that embraces the shaft 11 and is adapted to turn on the shaft 11 011 the bearing portion 23 formed by the collars 12 and 15; a cylindrical lug 26 extending laterally from plate 6 being adapted to move in the curved slot 18 and actuate the rocker shaft when the oscillating plate 6 is depressed by the shoe ,on the moving train; a web 27 formed integral with plate 6 serves to strengthen this lug; and a cam 28 and contact point 29 are attached to the oscillatil'ig plate 6 by the screws 31 and 31 and are renewable when worn.

A sustaining spring 32 is attached to plate 6 by means of the screw eyes 33 and 31 screwed into the threaded holcs 35 and 36 in the lug 26 and the post 21 and serves to sustain the oscillating plate 6 in its normal position.

A shuttle bar 9 mounted to slide in the housing is provided at each end 37 with a means of coupling it to the rods which control a signal device. This means of coupling consists of the two eyes 37 formed on the shuttle bar at either or both of its ends. As the semaphore in common is controlled by roads or draw wires "running from signal towers, it will be seen that a branch 67 from these, as shown in Fig. 10, may be provided with an eye 73 and attached to the shuttle bar 9 by a bolt 74, in such a manner that. when the signahnan moves the semaphore the shuttle bar will. move in unison with it and so operate the trip. The bar slidesin bearings 38 in the housing; A fixed catch 39 protruding from the edge of the bar is adapted to contact with the post 21 so that when drawn forward by the signahnan it depresses the rocker plate 17 raising the arm 7 and the stop 8 in position to stop the approaching train.

Set into the shuttle bar 9 is the pivoted latch 40, pivoted to the bar by means of a bolt through the holes 11 and 4:1 41 is threaded and smaller than 41, allowing a shoulder on the bolt. A lock nut is placed below the bar. In each end of the pivoted latch are curved slots 42 and 412 concentric to the pivotal point of the latch. Through these curved slots and into the threaded holes 45, step or guide bolts are screwed. A projection 13 on the pivoted latch is adapted to contact with the cam 28 on plate 6 so that the pivoted latch is turned when the oscillating plate 6 is depressed by the shoe on the passing train. The post 21 is thus released from the catch 14i so that therecker plate 17 may be depressed.

A relatively flat spring 46 is attached to the shuttle bar, 9, by the tang 18 and a screw passing through the holes 17 and 47' serves to bring the pivoted latch back to its normal position.

. A drop catch 49 is hung under the shuttle bar 9 by the rod 50 through the eyes 51 and is prevented from turning forward of the vertical by a lug 52. The lower point 53 of catch 49 catches on the tooth 19 of therocker plate 17 thus holding the stop in an elevated position.

The electrically operated latch for the above described trip consists of the catch 54:, the armature 56 and the weight 55 and is pivoted 'at 57 to' the housing. The adjusting spring 58 controls the balance. The magnet 57 ismounted on the housing and connected by the wires 59 to the rails of the track which are contained in the signal block ahead of the trip. The train while on this block and thereby closing the circuit including magnet 57 causes the catch 54; to register with the tooth 20 and prevents the rocker shaft from moving or being moved by the signalman to a position where another train could pass.

The electrically operated safety catch is composed of the weight 60, the circular armature 61, the tooth 62 (which is adapted to enter the notch '65 in shuttle bar 9) and the magnet 63. The wires 63 are connected to and in circuit with the source of the signal current. Should the current of the signal circuit fail, the safety catch will lock the shuttle bar so that the signalman' cannot allow a train to pass. i

Referring to Fig. 9,-57 is the magnet operating the electric latch and is shown connected in series with batteries and track.

The source of signal current 76 is connected to the left hand rail by the wire 77 and 78 at 79. The current is conducted by the rails 80 and the bonds 81 to the point where a train may be. The wheels 82' and the shaft 83 form a connection between the rails 80 and 84:. The current then travels back along the right hand rail to the insulated fish plate 85, from thence through the connection 86 and the wire 67 to the magnet 57, thence through the wire and 59 to the source of current.

The energized magnet causes the latch 5A to engage the tooth 20 as long as a train remains on the block as described.

The arrow indicates the direction in which the trains move.

The magnet 63, which operates the safety catch is-connected in series with the signal lightas follows: The wire 77 coming from the source of current 76 leads to the signal lamp 69. From thence a wire 70 goes to the magnet-63. The other terminal of the magnet 63 is connected by the wires 68 and 7 5 to the negative pole of the source of current. This circuit is closed and the magnet when energized acts to hold the safety catch released. It will be seen that a failure of the current or the lamp 69 will-cause deenergizing of the magnet and allow the {yeiggted safety catch 62 to lock the shuttle ar a An adjustable buffer 66limitsthe downward motion of the rocker plate 17;

It will be seen that should the spring 32 break or for any reason the oscillating. plate; 6 remain in adepressed position that the extension 43 on the pivoted latch will contact with the outer curved surface of the cam 28 and prevent the Signalman from moving the shuttle bar in a way to lower the stop and allow a train to pass.

Operation.

Taking for granted that the automatic trip has been set at the proper distance from the rail and fastened to the ties by lag screws I through the feet of the housing 5, the shuttle bar 9 is attached to the rods controlling the signals or semaphores, the wires 59 from the magnet 57 are connected to the rail and the wires 63 are connected in circuit with the source of current of the signal system and all is properly adjusted.

If a tram equipped with an automatic brake and power controlling device, such as or similar to the one described in my'application for Letters Patent #719,830 filed September 11th, 1912, and with the shoe 2, should attempt to pass the trip when it is in the position shown in the drawings, the valve handle 1 would be turned backward by contact with the stop 8, the brakes would be set and the auxiliary throttle closed.

As the shoe 2 on the engine passes over and depresses the oscillating platev 6 no action is performed by the mechanism other than the turning of the pivoted catch 10 by the cam 28 and the return of these parts to their normal position by the springs 32 and 416. The stop therefore remains set against the next train to approach.

So long as the first train remains on the block, the electric latch 54 will prevent any movement ofthe rocker mechanism.-

The train having passed the signal station, the Signalman will set the, danger signal. As the shuttle bar is connected with the signal system it will be moved backward (to the right Fig. 3). The pivoted catch 44 will slip by and back of the post 21.

The train having cleared the block, the signal will be set to allow the next train to pass and in so doing the shuttle bar will be moved forward, the catch 44 will force the post 21 with it which will cause the shaft 11 to rock forward and lower the arm 7 and the stop 8 to a point low enough to allow the valve handle 1 on the approaching train to pass over it.

As the shoe on the second train passes the trip, the oscillating plate 6 is again depressed; the cam 28 releases the post 21 by turning the pivoted catch 40; the lug 26 moves to the bottom of the slot 18 and de presses or rocks the rocker plate until it reaches the adjustable buffer, thus stop 8'is' raised to stop the next train.

When the stop reaches this raised position, the drop catch 53 registers with the tooth 19 and holds the mechanism fixed.

If the trip is set to allow a train to pass,

the signal being white, and it is desired to set the signal at red and stop the next train and in so doing the shuttle bar is moved backward, the fixed catch 39 rocks the post 21 and raises the stop 8.

As the electric wires 63'are connected directly in circuit with the source of the electric signal current, should said current fail, the catch 62 will enter the slot 65 in the shuttle bar and lock the mechanism which is under the control of the Signalman and prevent him from passing another train on to the block.

Should the spring 32 break, the oscillating plate 6 will drop and its weight combined with the weight of the rocker plate 17 will raise the stop 8 against the next train to approach. A fracture or weakening of the spring 516 will make it impossible for the Signalman to pass another train.

The mechanism is therefore entirely automatlc.

I claim:

1. The combination with train stopping mechanism carried on a train and automatic tripping mechanism adapted to be permanently placed at block or signal stations for the purpose of actuating said stopping mechanism and means for locking the said tripping mechanism in inoperative position, of a shoe mounted on the train, an oscillating plate actuated thereby and connected with said tripping mechanism, a shaft on which said plate is rotatably mounted, an arm on the shaft and a stop on the arm adapted to be elevated to actuate the stopping mechanism of a following train and means whereby the said tripping mechanism will be unlocked by the depression of the oscillating plate.

2. In an automatic train stopping device of the character described, the combination of a suitably mounted horizontal shaft located adjacent to a track, a stop member carried thereby and adapted, when raised, to contact with devices on the train, a slotted rocker plate permanently attached to the shaft, an oscillating plate turning on said shaft, and a lug projecting from said oscillating plate, said plate being adapted to be rocked through contact of the lug with the lower end of the slot when the oscillating plate is moved through a greater are than that of the slot, substantially as described.

3. In an automatic tripping device, the combination of a housing attachable to the crossties of a rail road, a stop carrying shaft journaled therein, a rocker plate attached to the shaft, a shuttle bar having latch mechanism to engage the rocker plate and sliding in the housing above and at right angles to the shaft, and operable means on the shuttle bar for attaching it to the actuating element of a signal or semaphore so that the shifting of a signal will cause the shuttle bar to slide at right angles to the shaft, substantially as described.

4. In an automatic tripping device, the combination of a stop carrying shaft, a rocker plate attached thereto, a post thereon, a shuttle bar actuated by external means movable at right angles to the shaft and latch mechanism on the shuttle bar adapted to engage the post on the rocker plate and rock the shaft through an arc, substantially as described.

5. In a tripping device, the combination of a rocker plate, a post on said rocker plate, a shaft to which said post is attached, a shuttle bar and a fixed catch thereon adapted to engage the post on the rocker plate and rock the plate and shaft through an are when the shuttle bar is drawn forward by the signal mechanism, substantially as set forth.

6. In an automatic train stopping device, the combination of a shaft, a rocker plate mounted thereon and having a post, an oscillating plate mounted on the shaft, means for operating the oscillating plate, a pivoted latch, a shuttle bar adapted to engage the post and carrying said latch, and a cam on the oscillating plate adapted to depress or turn the pivoted latch and release the post from the latch mechanism on the shuttle bar when the oscillating plate is depressed, substantially as described.

7. The combination in a tripping device of a shuttle bar adapted to be moved in unison with a semaphore, latch mechanism carried thereby, a rocker plate, a post thereon adapted to be engaged by the latch, a weighted drop catch pivoted to the shuttle bar and a tooth on the rocker plate so situated that when the latch mechanism is rcleased and the rocker plate depressed they will engage each other and hold said plate in its depressed position.

8. In an automatic train stopping device having a shuttle bar, a stop member, a rocker arm on which said stop member is mounted Copies of this patent maybe obtained for five cents each, by addressing the and an oscillating plate by which the rocker arm is actuated and which is provided with a curved cam, a pivoted latch carried by said shuttle bar and having an extension adapted to register with the cam in such a manner that when the shuttle bar is in one position the latch will be depressed when the oscillating plate is turned downward and when the shuttle bar is in the opposite position the extension will come in contact with the cam and prevent the bar from being moved back to the first position, substantially as described.

9. In an automatic train stopping device comprising a stop carrying rocker arm adapted to be actuated by a shoe on a vehicleor a semaphore and mounted on a shaft, the combination with a rocker plate attached to said shaft, a tooth on the rocker plate, a pivoted latch, adapted to engage with said tooth, an armature attached to the latch and a magnet energized by the signal current from the rails which Will attract the armature when a train is on the block, and cause the latch to register with the tooth and lock the mechanism with the stop in a raised position, substantially as described.

10. In a tripping device of the character described, the combination of a shuttle bar, having a notch, a weighted pivoted catch adapted to enter the notch, an armature thereon and a magnet mounted on the housing and connected in series With suitable electric signal apparatus or lights, the parts being designed and adapted to operate in such a manner that while the current is closed the magnet will be energized and hold the catch free from the notch and when the circuit is broken and the magnet de'elnergized will allow the catch to lock the shuttle bar against lateral movement.

DAVID D. Goon.

Witnesses LETITIAW. Goon, BERTI-IA M. WHITNEY.

Commissioner of Patents,

Washington, 11.0.

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