US528961A - Semaphore-operating apparatus - Google Patents

Description

(No Model.) I

- J. S. LYNAM.

SEMAPHORE OPERATING APPARATUS.

Patented Nov. 13, 1894.

o'raLn'ua, WASHXNGTON n c UNITED STATES PATENT OFFICE.

JOHN S. LYNAM, OF WINCHESTER, MASSACHUSETTS, ASSIGNOR OF TWO- THIRDS TO CHARLES S. COLLINS AND GEORGE F. ADAMS, OF NASHUA, NEW HAMPSHIRE.

SEMAPHORE-OPERATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 528,961, dated November 13, 1894. Application filed April 26, 1894:. Serial No. 509,074- (No model.)

To on whom it may concern.- rods D, D; and F, F, the operating wires con- Be it known that 1, JOHN S. LYNAM, a citinecting the levers E, E, with the switches or zen of the United States, residing at Winother semaphore operating devices.

chester, in the county of Middlesex and State The semaphore B is of the ordinary type of Massachusetts, have invented certain new used by railways and is pivoted to the upper and useful Improvements in Sema'phOre-Opend of the post A at the point b. Two or more crating Apparatus; and I do hereby declare hollow arms C, C, are pivotally connected to the following to be a full, clear, and exact dethe lower edge of the semaphore B so as to be scription of the invention, such as will enable free to swing below the same from right to to others skilled in the art to which it apperleft. The arms are preferably made of dif- 6o tains to make and use the same. ferent lengths so as not to interfere with each My invention relates to improvements in other when in action and to allow their actusemapnore operating apparatus and has parating mechanism to be mounted on the post ticular relation to that class of semaphores A at different points.

15 which are connected to and operated by two The levers E, E are pivoted to the post A or more railway switches, sidings or other 'sigat e, 6 respectively so as to be in horizontal nal operating devices and it consists of the planes slightly below the ends of the arms combination of a movable semaphore pro- C, C, when the latter are in their raised povided with two or more pendent hollow arms, sition as shown in Fig. 1.

2o movable rods adapted to slide within said The rods D,D, have their respective lower arms to a limited extent so as to independends pivoted to the ends of the levers E, E ently support or allow the descent of the and are adapted to slide within the arms C, latterand means for connecting the rods to C. These rods are each provided with lugs switches or other signal operating devices. 0 which are adapted to engage the ends of 25 It also consists of the combination of a pivthe hollow arms C, C, and thus support them oted semaphore provided with pivoted pendin their raised position. The levers E, E, are ent hollow arms, rods adapted to slide within each provided with counterbalance weights said arms and provided with projections that f, f, which are adapted to bring said levers to are adapted to support said arms, pivoted a horizontal position when they are released 0 weighted levers connected to and adapted to from all restraint of the wires F, F, which are operate said rods and means for connecting attached to their outer ends and connect them said levers to switches or other signal operatwith their respective switches or other signal ing devices whereby said levers may be opoperating devices. erated independently. The operation of the device is as follows:

5 It also consists of certain other construc- When a switch or siding connected to the tions and combinations as will be hereinafter main line is opened, the wire connecting it to more fully described and specifically claimed. the semaphore (say wire F) is thereby slack- In the accompanying drawings, Figure 1. ened and thus permits the lever E to rise and represents a side elevation of the devices emthrusts the lugs c of the rod D against the 0 bodying my invention, and Fig. 2. represents lower end of the hollow arm C and raises said a detail central vertical section through a porarm and the semaphore which is connected tion of one of the hollow arms and its actuatthereto. If another switch is opened (say that ing rod. Y connected to lever E) said lever will also rise A in the drawings, represents the semaand both levers will be in the position shown 45 phore supporting post; B, the semaphore or in Fig. 1, with the semaphore at danger. 5 signal pivoted at the upper end of the same; When either one or the other of the switches C, C, hollow arms pendent from the said is closed it pulls down the lever and rod consemaphore; D, D, rods adapted to slide within nected thereto but the signal remains at dansaid arms; E, E, weighted levers pivoted to ger as the other switch is open and its lever 50 the post A and carrying the lower ends of the and rod are up and supporting the hollow arm Ioc of the semaphore. It will be readily seen that the latter switch must be closed also before its lever and rod can descend and permit the semaphore to drop to safety.

Any number of switches or other signal operating devices can be connected to one semaphore but they must all be at safety before the semaphore will drop to safety as if one alone remains open or at danger, its lever and rod will support the semaphore.

What I claim as my invention is 1. In a semaphore operating mechanism the combination of a suitable supporting post, a semaphore pivoted thereto, two or more pendent hollow arms connected to said semaphore, movable arms adapted to slide within said arms to a limited extent so as to independently support or allow the descent of the latter and means for connecting the rods to the switches or other signal operating devices, substantially as described.

2. In a semaphore operating mechanism the combination of a suitable supporting post, a semaphore pivoted thereto, pendent hollow arms connected to said semaphore, rods adapted to slide within said arms to a limited

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