US1153616A - Automatic train or car stopping apparatus. - Google Patents

Description

specification.

SARATI-IpKUiMAE GHOSI-I, OLE SEATTLE, WASHINGTON.

AUTOMATIC TRAIN OTB/CAR STOIBINGAPPARATUSi To all. {whom it may concern:

Be itknown that 1,, SARATH KUMAR Gnosn, a subject of the King of Great Britain, residing at Seattle, in the county of King and State of. Washington, have invented certain new and useiz'ul Improvements in Automatic Trainer Oar Stopping Apparatus, of which the. following is a My invention relates to an improved method for stopping. automatically a train or car that uses an air-brake, onpassing a signal set at stop. 7 y

My invention is equally applicable where the block system of signaling is used or the manual system of signaling; the setting of the semaphore signal at st0p-position by .eithervsys-tein sets automatically this apparatus into activity for stopping the train or car. Also, my invention stops the train or carby automatically opening a valve in the air-line by merely mechanical action without the use of any electrical device.

My invention consists of two parts first,

a mechanism connected with the semaphore signal and hereinafter called the track in- .strunnent; second, an apparatus on the en- 'me'thod and describe it here.

gine or car. I now describe these in detail illustrated so far as needed by the accornpanying drawing, in which- Figure- 1 gives a side: view of the track instrument. Fig. 2 gives a side view of the apparatus inlthe engine or which is rendered active by the track instrument, and

which opens a valve on the air-line. Fig. 0

7 gives a vertical. section of the valve in the air-line, showing the relative position of the pin: at the top which keeps the valve closed,

and the coiled spring at the bottom which opens the value when the pin is removed.

Same numbers reter to same parts in the several views. i

Thetraek instrumentmay be placed on the ground to lie below the passing engine or car, or be suspended from above over the passing engine: or car, or be placed laterally 'so as to stand by the side of the passing. en-

gin-e or car 1). I. preter this last in Fig.1 a pole (i) of suitable height is Specification of Letters Patent.

PatentedSept 14', 19 15.

Application filed .Tune'23, 1914.. senarnaseaara placed by the side of the track. On top of the pole a rod (,2) is hinged so as to rotate 111 a vertical plane at right angle to the rails, any suitable form of hinge being used which prevents the rod (2) from rotating too far back. I -he rod (2) is connected by a wire or chain (at) tothe semaphore signal (5) this connection is made according to the semaphore convention of each particular railway so that, whatever be that convention, the rod is pulled out of the way of passing cars and rendered inactive when the semaphore signal stands at clear-position, but the rod (.2) descendsor gravitates to a horizontal position and becomes active when the signal is set at stop-position. In

this method, iii a malicious person cuts the the rod (2). At the outer extremity of the rod (2).- there is a small cross arm (3); when the track instrument is in. the active or horizontal position this cross-arm (3) engages a brush (7) projecting horizontally from the apparatus oi the engine. In the engine apparatus (.Fig. 2) the said brush (7) isattaehed' to a rod. (8) which is pivoted at 9) tosome suitable support on the on girls, the pivot permitting horizontal movement; the broken line to the right of (9) shows the wall of the engine. The rod (8) further passes through a horizontal slit at the top of the stand (10) so that the rod is not permitted to have any vertical movement, and has only horizontal movement within-v the slit. .lhe slit contains a lateral spring on each side oi? the rod so as to maintain the rod in a steady position without undue lateral vibration owing to the motion of the engine, but when the rod has to move under the actuation of the track instrument the springallows the necessary movement.

presses upward the sliding part of the valve Atthe top of the valve in a vertical position there is a thin metal pin (14) which presses downward on the sliding part of the valve. The downwardpressure of the pin counteracts the upward pressure of. the coiled spring and keeps the valve closed; but if the pin be removed, the upwardp'ressure of the spring would open the valve and thus open the air-line and arrest the train or car. Thus if the engine passes a signal set at stop, the track instrument actuates the brush (7) on the rod (8-), andthe conse- 'quent horizontal movement of the rod causes its inner extremity (11) to knock out the pin' (14:) and thereby arrest the train.

Fig. 2 shows a-rest or-bracket (15, 16) which upholds the engine apparatus at some suitable part of the engine. .The bracket sustains a' box-like cover indicated by dot-.

' mosphere; (18) is the corresponding orifice on (17) here viewed in section from the side. Hence if the pin (14) be removed, the slide (17) would be pushed upward by the spring (20), so that the orifice (18) would come in a straight line with (19, 19) and thus open the air-passage, theupward movement of slide (17) beinglimited to the desired amount by the hook or catch (21). The upper end of the pin (14) is held in position by (22) which is a projection from some fixed part ofthe valve or of the engine. There may be a very slight indentation on the underpartof (22) and the top part of (17) between which the pin is inserted,so as to keep the'pin from falling 01f with the vibration of the engine and so that it will need the lateral thrust of the rod (11) to throw out the pin.

It is desirable that the pin be made of thin metal so that it becomes slightly bent by this ejection and unusable a second time.

Thus if the engineer be supplied with a given number of pms for each run, then each pin he has used up acts. as a record against him of having gone past a signal set at stop.. This makes for greater-care and eflioiency.

When the valve isopened in the manner of this invention and'the air'passes out of the exhaust orifice (19, 19) this escape of air is used to blow a whistle (23). F or this purpose a short conduit pipe is placed at-the exhaust orifice to take in all or a portion of the escapingair, and the whistle. (23) is attached to the conduit pipe. The blowing of the whistle instantly warns the "engineer that the brake is. beingautomatically applied.- He may instantly shut off'steam or propelling power, or carry out any other I haveshown'tl e pin (14) as placed above the valve and the spring (20) as placed be low it; but the relative positions of the pin duty prescribed for the emergency.

and spring may be reversed. In that case, if V the pin be placed below, the valve, instead of a spring'pres'sing downward on the valve a weight may be used in preference.-

- I have mentioned a slidevalve as'being the type of valve I prefer for this invention;

it be placed above or below the engine, then the relative direction of the engine apparatus will also be altered accordingly;

but any other type of valve-may be used,

Likewise, although I have-shown and de- M scribed certain preferred formsof-my ;ini breakable portion'of-the airrline is carried in an exposed place outside the body -of the" car,which breakable portionis fractured by atrack instrument on passing the. same. I do not claim any method of'car stoppingiby the fracture of the air-line carried in" an exposed place, or vbythe actual fracture of V the air-line in any part. 'Iclaim:

In automatic train or .car stopping ap- V para'tus, the combination with' the brake pipe, of a valve 'havingone side .connected 4 to said pipe and the opposite side opening into the atmosphere, a spring normally acting upon said valve to actuate the latter to open position to bleed the brake pipe, apro- T jection on the casingof the valve, a pin interposed between said projection and the tion to limit the movement of the valve to valve and acting to hold the latter in closed open position under the action of said 10 position agaidllisft the action of said spring, spring.

a 1'0 pivote or swinging movement and having one end adapted to strike against SARATH KUMAR GHOSH' said pin to release the valve and mutilate Witnesses:

the pin so that the latter will be unfit for RoBEY J. BUNTA,

further service, and means on said projec- SARA VAN WAGENER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

Images