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US344494A US344494DA US344494A US 344494 A US344494 A US 344494A US 344494D A US344494D A US 344494DA US 344494 A US344494 A US 344494A
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    • B61L19/00Arrangements for interlocking between points and signals by means of a single interlocking device, e.g. central control
    • B61L19/02Interlocking devices having mechanical or fluid-pressure operation


(No Model.)


Patented June 29, 1886.

WMD/wwe o N PETERS Plwxu-Lnlwgmpher, washingmn. D.CI




SPECIFICATION forming part o Letters Patent No. 344,494, dated June 29, 1886.

Application filed January 152, 1886.

T0 all whom it may concern,.-

Be it known that I, FRANK I. MYERS, of the city of New York, county and State of New York, have invented a new and Improved Semaphore-Signal, of which the following speciiication is a full, clear, and exact description.

This invention relates to a semaphore-signal for railroads, and is so constructed that even should the chain or wire which connects the fan-signal with the hand-lever expand or contract the fan will always be placed at its proper position-that is to say, the fan will either be placed in its danger position or in its clear position, independent of ordinary variations in length of the operating mechanism.

The invention consists in the various elements of improvement hereinafter more fully pointed out.

In the accompanying drawings, Figure l is a side elevation of my improved signal, showing the fan raised. Fig. 2 is a front view thereof, showing the fan lowered.

The letter A represents a post slotted near the top to form two cheeks, a, which form the bearings for a pivot, I), to which the usual fansignal, c, is rigidly secured. The pivot b extends bodily through the cheeks a, as shown. At one end the pivot b carries anotched disk, d, which is engaged by the tooth of a second disk, c, pivoted to the post A. rlhe disk l should be cut away at its circumference to the right and left of the notch, so as to forni two concavities and afford space for the disk c. The disk e is provided with a grooved flange, f, that is embraced by a chain, g. One end of this chain carries a weight, 71 while its other end passes under a loose pulley and is connected to a hand-lever, z', adapted to be vibrated backward and forward.

o p are the usual spectacle and back lights attached to pivot b. XVhcn the fan-signal is to be lowered, the hand-lever i is drawn backward to revolve disk e in the direction of the Serial No. 188,373. (No model.)

arrow, Fig. l. The tooth on this disk will now enter the notch on disk d, revolving said disk with it and pulling the fan c down. After the tooth has left the notch the disk c may be still further revolved without affecting the position of the fan. Vhen the hand-lever is locked in its backward position, the fan c will be likewise locked in its down or clear position. On the release of the hand-lever the wei ght L will revolve disk a forward to engage notched disk d and revolve the same to raise the fau. After the fan has been raised the disk c may revolve still further without affecting its position. In its upright position the fan c is properly supported by means of the disk e engaging one of the concavities of disk d, and thereby preventing said disk from turning, as shown in Fig. l. It will be seen that even should the operating chain or wire eX- pand or contract to a certain extent the fan c will always be positively operated, inasmuch as it is the temporary engagement of the toothed disk with the notched disk, and not the amount of maximum motion ofthe chain, which determines the position of the fau.

I claim as my invention-` l. The combination of post A with pivot b, carrying fan c and notched disk d, and with the toothed disk e, that engages notched disk d, and is operated by chain g, substantially as specified.

2. 'lhe combination of post A with pivot b, fan c, and notched disk (l, which is cut away at the sides of the notch, and with the toothed disk e, chain g, and lever i, substantially as and for the purpose speciiied.

3. The combination of post A with pivot b, fan c, notched disk d, toothed disk e, having grooved flange f, and with the chain g, weight h, and hand-lever t', substantially as speciiied.



F. v. BRIEsEN, Roer. II. ROY.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030133269A1 (en) * 2002-01-16 2003-07-17 Weightech, Inc. Modular sealed portable digital electronic controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030133269A1 (en) * 2002-01-16 2003-07-17 Weightech, Inc. Modular sealed portable digital electronic controller

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