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Publication numberUS399538 A
Publication typeGrant
Publication dateMar 12, 1889
Publication numberUS 399538 A, US 399538A, US-A-399538, US399538 A, US399538A
InventorsFrank K Kelsey
Original AssigneeK Part Interest To joseph C
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 399538 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

2 Sheets-Sl1eet 1.



(No Model.)

Patented Mar. 12, 1889.

F. n u



2 SheetsSheet 2 (No Model.)



No. 399,538. Patented Mar. 12, 1889.

a plan View of inyimprovcd railway signaling lever A.


FFICEE ATENT JOSEPH (F. PRCK, OF SAii'lE PLACE, AND JAMES i]21\lit\)l., ()l lRAXG a SWETGH SPECIFICATION forming part of Letters Patent No. 399,538, dated March 12, 1889.

Application filed it'nml 17, 1888.

To (all 1117110722 it may (!!)?ZO(??7I..'

lie it known that I, FRANK N. KELSEY, a citizen of the United Suites, residing at New Haven, in the State of Uonnecticut, have invented new and useful Improvements in Railway Signaling Apparatus, of which thefollowing is a specification.

My invention relates to that class of railway-signals which elevate a semapho re-arm to indicate dangef when a draw-bridge or switch to which a part of the mechanism is connected is in such a position that an approaching train is in danger of leaving the track.

My invention has for its object to provide a means of raising and lowering a semaphorearm'hy the same mechanism which unlocks the draw bridge or opens the switch, and also to provide for the expansion and contraction of the wire connecting the mechanism at the draw-bridge or switch with the semaphorearm. 7 y

In the accompanying drawings, 'l igu re 1 is apparatus: Fig. 2 is a side view of the same. Fig. 3 is an end view of the mechanism which is situated at the draw-bridge. Fig. 4 is an end View of the mechanism at the semaphore post, and Fig. 5 shows the pawl in cngagcment and released.

Referring to the drawings, Adenotes tho operating-lever fastened to the shaft to and connected at its lower end to a bolt, 13, by means of a pin. The bolt B. slides in suitable guides fastened to the floor. Pivoted on,thc lever A is the dog (L'which is caught and held hy the projection c ontho'lrainc (hwhen the lever is moved. to the position indicated by the dotted lines in Fig. 2, thus preventing bztckward motion of the lever until the dog is raised by the latch-lever l pivoted near the upper end of the lever and connected to the dog by a suitable rod. A sprochct-whoel, I), is pivoted loosely on the same fulcrum as the A ratchet, g, is formed on the side of the s n'ocket-wheel nearest to the lever and adapted to he engaged by a pawl, h, pivoted on the lever A, which pawl has a Weighted end, 0', opposite to the end engaging with the l-ho parts when in motion.

Serial No. 267,456. 1N0 model.)

the lover is in ihe posiiion shown in Fig. 2, the weighted end of the pawl bears against the stop 1', and is thus lhrown out. of engagenient with the ratchet, and (he Hprochoil-\\hool is then free to he turned by the expansion or chain passes partially round the wheel l),ovcr.

a suitable guide-pulley, and is connected at the end to a weight, G, which keeps the chain taut atalltirucs when the pawl is not in ongagemont with the ratchet, ihus taking up. expansion and allowing for contraction. The chain extends from the wheel l), along the side oi the track over suitable guidoqnilleys, to the underside of a pulley at the l'ooi of the SOlllFlIlllOlG-l)UHL lt thou passes \iorticaiiy upward and over a pulley, m, which turns on a bearing fastened lo the post above-tho sema )horo-oporallug lover. The

chain passes downward l'rom the pulley and is connected at its end to the lever ii. The lever ll turns at one end on a |'ulorun1,s, which is se("urod to tho post. passes through a fork, 1/, formed .on the lower end of he rod l. which is vonnovlod at its upper end to the smnaphoro-ariu h by means of a bolt passing through a slot, 0, in the rod and iulo the arm. 'lho function ol this slot is to l'l'illYl llurod and semaphore arm from the shock duo lo the luoiuoulumol' ()n the rod 1 couliter-weights p are plzwod 1o orcrbulamo the weight of the blade of the so]uaphoro-arm so that the arm will he raised to the posit-ion shown by the dotted lines in Fig. i, when the lever ll is permitted to drscendlry the chain becoming slur-h.

'A' hearing, L, is secured near the outi-rsirle This lock has an outwardly This lover,

hammer l',restiug nnon thelever ll,des -ends oi. one of the rails of the track, in which is t'ulcrnnied thelever M. ()neend of this lever extends from the bearing nearly to the side of the rail, with its upper surface slightly above the top of the rail, and the other end'ot" the lever extends from the bearing to the semaphore-post. into a slot, i, which limits its downward motion. Connected with it near the post is the rod 1 which passes upward and has its upper end bent at right augles to the length of the rod. 7

An ordinary gong, X, is fastened to the post in-sueh a position as to be struck by the hammer l The hammer is pivoted on the post above the lever ll at right angles to and across the path of its travel. The hammerlulcrnm is so located that when the lever is drawn up by the chain the bell-hammer is lifted and held in contact with tllO'SltlO of the gong. This bell-hammer has an end projecting on the opposite side ol the fulcrum from the end which strikes the gong and passing under the hooked end of the rod q. 'lhis rod is of such alength that when the hammer is lifted by the lever ll the wheels of a train strike the end of the lever M, thereby producing vertical motion oi. the opposite end of the lever, and the rod will not permit the bent upper end to come into contact with the hammer before its motion is checked by the slot t, and yet allows it to act freely on the bell-hammer when the lever is down.

I The operation of my improved railway signaling apparatus is as follows: Supposing the draw to be looked, as shown in the drawings, the pawl 72 will then be held out of engage ment with the ratchet g by the stop i. The

' weight- G being heavier than the parts operated by the chain 1, raises the lever ll, and as the red I rests on the lever it is thereby also raised and the semaphore-arm permitted to drop to the position int'licating safety," in consequence of the blade of the arm being heavier than that part of the arm on the opposite side of its fulcrum. 'lhe bell-hammer is also raised by the lever ll, and thereby held out of contact with the bent end of the rod I]. To unlock the draw, the operator pushes the lever A over, thereby throwing the bolt ll out of the socket l". The pawl ll, being earried on the lever A, moves with it away from the stop 1', and as the end r is heavier than the 'oppositeend the pawl is brought into engagement with the ratchet g, thereby connecting the sprtn-keiovheel l) to the lever and then the motion of the lever in withdrawing the bolt ll lifts the weight (i. .When the weight (l is lifted, the chain becomes slack, and the lever ll, to which it is connected at the semaphore-post, being weighted at its outer end, drops to the position shown by the dotted lines in l*ig. l. 'lhe rod 1, being weighted,descends with! he lever and thereby brings thesemaphort- .it [H with position indi eat in}: danger. 'lheheavier end oi the bellone end of the lever M projects above the top of the rail,thejwheels of a passingtrainstrike.

and depressit, thereby raising the opposite end, to which isconnectcd the rod q, having a bent end in contact with the bell-hammer. When the wheel has passed oil from the short end of the lever, the long end will fall, carrying with it the rod and thereby causing the hammer to strike the gong. This operation is repeated .as each wheel passes over the short end of the lever LI l'ly ringing the gong the attention of the engineer is called to the factthat. the seniaphore-arm indicates danger."

It is evident that should'the chain 1 break the semaphore-arm will rise to the position ind icating danger.

I claim as newand desire to seen re by Letters latent l. In railway signaling apparatus, the combination, with th operating-lever and the bolt operated ill.i by, of a bolt-lock pivot-ed beside the boltand adapted to drop across the end ot the melt at right angles to its line of motion when ihe bolt is fully retracted and prevent forward motion of the bolt, substantially as shown and described.

L. The combination ot'- an operating-lever with the bolt ll, operated thereby, to lock the draw-bridge or sr'it eh; the bolt-lock E, pivoted beside the bolt. and adapted to drop across the end ol the bolt, the dog d, pivoted to the lever on the side of the leverfulerum, opposite to the pawl II, and adapted to be caught and held'b v the pmjeetion on the frame, a sprocket or chain wheel provided with a ratchet, i formed on its side,the pawl h, pivoted on the lever adapted to engage at one' end with the ratchet,and having its opposite end weighted and so shaped as to come in contact with a stop, and thereby be thrown out, of engagennatt with the ratchet when the operating-lever'is at one end of itstravel, and a chain passing around the chain-wheel,eonneeted at one end t::-a weight andat theothel' end to themeclmnisat t'oroperating the semaphore, substant iall vas described.

ii. In combination, the weighted lever ll, pivoted at one end and adapted-to be lil'ied and'held up by 2: chain, /,the rod I, havingat its lower end a Fork which engages and rests upon the lever,aid-provided at its upper end with a slot, and a s tllt'lllllu'l'till'lll connected to the rod 1 la bolt passing through theslot. in the rod an into the arm near its l'ulcrnm, substantially as and l'orihepnrposespeeitied.

In railwy-rv signalingapparatus, the eon]- bination, with a bell or gong and suitable mechanism for operating it tixed beside the rails of the track. of the lever ll, the rod I, provided with a l'orkt-d end, It. and a slot, 0,

in the other end, the semaphori arm la" the. :50

- h', the lever A, the dog (I, pivoted on the lever, rod 1, provided with a forked end,.n, and a; and the stops 11 and e, all combined as and slot, 0, in; the other end, the semaphorearm for the purpose specified. r, K, the lever M, the rod q,1he bell-hammer P,

5; In combination, the operatinglever A, and the bell or gong N, all combined sub- I 5 "5 the dog d, pivoted on the lever, the sprocket stantially in the manner and for the purpose or ellllain gheel D,"with a ll'atchet, g, formed specified. on t e si e of it, t he pawl z, pivotedon the v T v ,1 lever A and provided with a weighted end, i ERA) the stop, 1' on the frame, the bolt B, the bolt- Witnesses:

to lock E, the socket F, carrying the rib k, the JULIUS 'lwIss,

Weight G, the chain or wire I, the lever H, the GEO. E. GREENLEAF.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US20040194538 *Apr 23, 2004Oct 7, 2004Rheologics, Inc.Dual riser/single capillary viscometer
Cooperative ClassificationB61L19/02