US888959A - Railway-signal. - Google Patents

Description

No. 888,959. PATBN'TBD MAY 26, 1908,

' E. M. GAIN.

RAILWAY SIGNAL. APPLICATION FILED IAN. 1'7, 1908. y

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, y Enma? PATENTED MAY 26, 1908.

E. M. GAIN. v'RAILWAY SIGNAL. APrLIoA'rIon FILED JN.17,18o8.'

2 SHEETS-SHEET 24 wi h1 uns .nal light UNITED PATENT OFFICE.'

EDGAR M. vGAIN, OF WILMINGTON, DELAWARE.

RArLWAY-SIGNAL.

Specification of Letters Patent.

Patented May 26, 1908"V Application filed January 17, 1908. Serial No. 411,328.

T o all whom itmaycon'cera."

Be it known that I, EDGAR M. GAIN, a citizen ofthe United States, residing at Wilmington, in the county of Newcastle and ysounding the Whistle thirty seconds and thereby calling attention of 4the engineer, brakeman and others on the train of the fact that danger is ahead. The signal hereinafter described is especially valuable inA foggy Weather and at night in the event of the sigetting out of order.

. With tA e above -generalobjeot in view, the

invention consists 1n the novel construction,-

combination and Aarrangement of parts as herein fully described, illustrated and claimed.

2a, In the accompanying drawings ;-.-Figure 1 is a perspective view of a ortion of a railway, showing a signal stan and some of the connections lforming part of the resent invention.` Fig. 2 is anenlarged e evation of the u per portion of the stand, showing the Whist es, valves, valve operating magnets, etc. Fig. 3 is an enlarged detail sectional view of the two Way valve which controls one of the whistles. Fig. '4 is a plan view of the same.

Fig. is a detail View of .oneof the magnets 'showing also a ortion of the arm of one of the two-Way va ves. Eig. 6 is a detail vertical section showingr the 4circuit closer and the rmeans -for operating the same.

Fig.4 7 is a sectional plan view of. thesame.

Referring to the drawings,'1 designates a signal stand arranged at one side of a railway and equipped with the ordinary signals 2 adapted tobe operated by compressed air which is led-thereto by a compressed air pi e 3 indicated by dotted lines in Fig. 1, tie maincornpressed air ipe line 3 having a branch 4whichexten s upward within the standl 1 v Mounted upon the stand 1 is a plurality of y tanks 6 and underthe preferred embodiment of thisl invention', one of said tanks is used for each Itrack and aI whistle 7 is provided for ,each/tank.v vThese whistleshave distinguishi tended outward ing sounds to designate the respective tracks to which they refer. The branch pi e 4 which extends upward within the stand) 1 is connected at ya suitable point with a horizontal branch 8 and this branch 8 is in turn branched as shown at 9, said branches 9 being in communication with the whistles 7 and tanks 6 and being controlled by a two-Wa valve, as shown at 10. In carrying out this feature of the invention, the pipe 9 is provided with aT-coupling or valve casing 11 in which the valve'l() is rotatablyl mounted,

said valve havin0r the stem 12 thereof eX- beyond the casing and an operating lever arm 13 bein mounted fast on said stern. The stem 12 as a spring 14 coiled around the same' with one end of the spring secured to the valve casing, as shown at 15 and the other end engaging over the le i ver arm 12 as shown at 16, the tension of said spring being exerted to hold the lever arm I3 in a substantially horizontal position as shown A1`n'I`ig. 2 and also actin ,to restore the arm to a horizontal position a ter it has -been elevated by the4 armature 17 and. electro magnet 1S mounted on a bracket 19 secured to the stand.

' The pipe .'20 leads from the valve casing 1.1 into the adjacent compressed air tank 6 and the passagev 21 of the valve is so cored out that when the arm 13 occupies a horizontal position, the compressed air delivered by the pipe 9 passes through the valve and the connection 20 into the tank. When the arm 13 .is drawn upward by the action of the electro magnet 18, the pipe 9 is closed below the valve casing and thenir then passes from the tank '6 through the connection 20' and valve pas- 'prcssed by t ie wheels of the cars irrespective of the direction in which the train is moving. Thebox 22 is recessed in its up er edge and a rubber gasket 24 in the form o a ring is 'seated in said recess, the lid or cover 23 resting on said gasket and admitting of a limited amount of depression or downward movement ofthe .moved therefrom.

18 hereinabove descri lid or cover for a' purpose which willappear, said gasket also serving by its resiliency to again elevate the lid 23 when stress is re The lid 23 isvprovided with a projection 25 which bears against the underside of a flexible plate 26 which directly'underlies one of l the track rails, the latter. being indicated by f dotted lines `in Fig. 6 at 27. rlhe tie,.just y under the plate 26 is liollowed or (lished somewhat as indicated by dotted lines at 2S l to admit of the downward movement or de- 'l pression of the plate 26 under the weight of the train .in passing over the rail 27.

To the underside of the lid 23 is'secured a l metal plate 29 which is insulated lroin the lid as shown and provided with a Contact point 30 which when depressed is adapted to rest against another-contact point 31 in the form of a pin carried by a metal plate 32 mounted on a yielding support 33 and insulated therel from. as shown in Fig.. 6. The support 33 is l mounted upon'and upheld at a certain elevation by means of an underlying spring 34, the Contact points 8() and Bl'being normally out I l of contact. The support 34 is provided with oppositelyA extending` wings 35 which are movable up and down between parallel udes 36. These guides are provided with ases 37 by which they are secured in the bottom of the box 22'and the upper ends of said guides are provided with bridge pieces or cutting' bars 38 through which are 'inserted adjusting screws 39 by means of1v which the height of the contact points 31 may be nicely adjusted. Wires 40 and l.tllead ol'l' from the plates 29 and 32 to theproper electro magnet ed, it being understood that a battery or generator of any suitclearly shown in able'description is interposed in the circuit formed by the wires 40'and el.

Thevlid Ior cover 23 is also capable of a slight adjustment which is accomplished by hinging saidcover at one side of the box as shown a 42 and providing an adjusting screw 43 at the o posite side of the box, as 6 so that by `tightening or loosening the nut 44 of'the clamping! l screw the lid may be correspondingly lowered or raised to adapt the saine to the position of the plate' 26 under the su periinposed rail.

The moment the cap or cover 2.3 is depressed tlie electrical circuit is closed, the proper magnet is energized, the valve i() shifted and air is applied by the tank to the appropriate whistle 7. This whistle sounds thirty seconds while the train is passi ing at a point where ithe signaling apparatus is located, thus notifying the trains crew of danger. As soon as the ltrain passes vthe apparatus, the compressed air tank is immediately re-eharged in readiness for the next.y train.

Having thus fully described the invention, what is claimed as new is 1. A railway signal emboilying a' compressed air. tank, means i'or introducing air I into said tank, with the tank, a valve controlling the coina whistle in comn'iunication niunication between the tank and whistle, an electro-magnet 'lor operating` said valve, and a train operated circuit closer in the same c1r cuit with said magnet, substantially as de- I scribed.

2. A railway signal embodying a coinT pressed air tank, a whistle, a compressed air ,pipe lleading to the whistle and tank, a two way valve controlling the the whistle and tank andfrom the tank to the whistle, an electro-magnet for operating said valve, and a train o erated circuit closer adapted to be operated) by a moving train. and embodying contact points arranged in the saine electrical circuit with the magnet, substantially as`described.

3. A railway signal embodying a whistle, an air tank, a compressed air pipe communieating with the whistle and tank, a valve controlling the admission ol.' air to the tank and also controlling the passage of air from the tank to the whistle, an electro-magnet tor operatinffsaid valve, and a train operated circuit c oser in'tliesame electrical circuit with said magnet and embodyingr means operated by the depression oi a rail `tor setting the circuit closer, substantially as de scribed.

4. A. railway sig-nal embodying an air reservoir,a whistle, an electro-magnetfor throwing said whistle connected therewith .into operation, and a 'circuit closer embodying yielding Contact points in the same electrical circuit with the said magnet, one o'l` said con* tact points being associated with and moved by an unsupported portion o'l one et the contact point carried by said lid, another contact point yieldingly supported in the box, means for adjusting the position ol the last named contact point, and an electrical eircuit in which said contact points and the electro-magnet are included.

.ln testimony whereof l allix my signature in presence et two witnesses.

EDGAR 'M'. (2* li\'. Vvitn'esses:

dem: L. Frn'rciinn, lnviNe J. lime.

passage of air to.

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