US579933A - Signaling - Google Patents

Description

(No Model.)

J. G. SGHREUDER 8v J. P. COLEMAN.

SIGNALING.

Patented Mar. 30, 1897.

Fries.

ATENT JENS G. SOHREUDER, OF EDGEWOOD PARK, AND JOHN PRESSLEY COLEMAN, OF SWISSVALE, PENNSYLVANIA, ASSIGNORS TO THE UNION SIVITCH AND SIGNAL COMPANY, OF SWVISSVALE, PENNSYLVANIA.

SIGNALING.

SPECIFICATION forming part of Letters Patent No. 579,933, dated March 30, 1897.

Application filed August 26,1896. Serial No. 608,985. (No model.)

To @ZZ whom it may concern; I vided with an upwardly-projecting stem 18, Be it known that we, J ENS G. SGHREUDER, in which is arranged a pin 17, having a head a subject of the King of Sweden and Norway, or enlargement at its upper end and insulated residing at Edgewood Park, and JOHN PREssfrom the stem 18. On opposite sides of the LEY COLEMAN, a citizen of the United States, path of movement of this pin 17 are arranged residing at Swissvale, in the county of Allesprings 16, which are secured on an insulated gheny and State of Pennsylvania, have insupport. This pin and the springs 16 form vented or discovered certain new and useful a make-and-break mechanism, to be herein- Improvements in Signaling, of which improveafter described. 10 ments the following is a specification. The signal hereinbefore described is ar- The invention described herein relates to ranged along the track, which, as is customcertain improvements in railway signaling, ary, is divided into sections, the rails on each and has for its object a construction whereby section being electrically connected together the signal may be operated semiautomaticbut insulated from adjacent sections. The

I 5 al1yi. e., by an operator and by train moverails of each section are connected to a trackmentsor automatically-#1. e.,by train movebattery 21 and also to opposite poles of a ments; and in general terms the invention track-relay 22, and the armature 23 of the consists in the construction and combination track-relay forms a part of the circuits of batsubstantially as hereinafter more fully detery 24. One of these circuits starting from 20 scribed and claimed. the battery 21 consists of the wire 25, cont-act- In the accompanying drawings, forming a point and armature of track-relay 22, wire part of this specification, Figure 1 is a view, 26, magnet 27 of indicator 28, wire 29, switch partly in section and partly in elevation,of the 30, and wire 31 to battery. A branch circuit signal and its operating mechanism. Figs. from the one just described starts from wire 25 2 and 3 are diagrammatic views illustrative 29 and is formed by armature of magnet 27, of two forms or arrangements of circuits for contact-point and wire 33 to battery. The controlling and operating the signal. third circuit from battery 24 consists of wire The signal and its operating mechanism 25, armature and contact-point of relay 22, are preferably constructed as described and wire 34., magnet of valve mechanism control- 0 claimed, or intended so to be, in the applicaling the flow of fluid-pressure to and from the tion of J G. Schreuder, Serial No.592,413, filed cylinder 6, wire 35, switch 30, wire 29, arma- May 21, 1896; and it consists of asemaphoreture 32, contact-point a, wire 33 to battery. blade 1, pivotally mounted upon a post 2 in The movable member of switch 30 is consuch manner as to automatically return to nected to a quadrant of signal-operating le- 3 5'normal or danger position when free to move. ver 20, said quadrant being adapted to be This signal is connected by a rod 3 to one end shifted by the movement of the locking-latch of a balance-lever 4, whose opposite end is 011 said lever. connected by a rod to an operating-lever 20. As shown in Fig. 2, the switch 30 is shifted The lever 4: is pivotally mounted in yoke 5, when the lever 20 and the signal are in nor- 0 which is connected by a stem to the head of mal or danger position to open the circuit a cylinder 6, which is preferably constructed through the magnet of the valve mechanism with an open lower end and is arranged to of the cylinder 6, so that said cylinder and move up and down on a stationary piston 7. the lever 4, carried thereby, will be dropped Fluid-pressure is admitted into the cylinder down so that the blade will remain in danger 45 through a passage formed through the piston position. When the parts are in this posi- I00 and its supporting-stem, and the flow of fluidtion and the track-section A is unoccupied, pressure to and from the cylinder is controlled the circuit through the magnet 27 and the by an electrically-actuated valve mechanism, branch circuit through the armature 32 of said as fully shown and described in the applicamagnet will be closed, so that the blade of the 50 tion above referred to. The yoke 5 is proindicator 28 will be in safety position, as I00 shown. It the signal-lever 20 be now shifted, the switch 30 will first be shifted by the movement of the latch-rod of said lever, so as to close the circuit through the magnet of the valve mechanism, which is so shifted as to admit air into the cylinder 6 and raise the cylinder or hold it in its raised position. By thus locking the fulcrum of the lever l as against movement the shifting of lever 20 will clear the signal 1. The movement of the switch by the latch-rod will not demagnetize the magnet 27, as the current from the bat tery 2. c will find a path through the branch circuit, which is formed in part by the armature 32. As soon as a train enters upon section A relay 22 will be demagnetized and its armature 23 will leave the contact-point and break all the circuits of battery 2t. The rupture of the circuit through the magnet of the valve mechanism of cylinder 6 will permit of the escape of fluid-pressure from said cylinder, thereby permitting the cylinder to drop and carry down with it the fulcrum of lever 4, thereby permitting the signal to go to danger. The rupture of the circuit through the magnet 27 permits the armature 32 to drop, thereby shifting the blade of the indicator 28 and forming a break in the branch circuit. The several parts will be held in the position described until the train has passed off of section A, whereupon relay 22 will be reenergized and the armature 23 drawn against its contact-point. This movement of the armature will not, however, restore the circuits described, as the switch 30 has been shifted in clearing the signal to contact-point (t and the armature is away from its contactpoint. In order to restore the circuits to normal position, the movable member of switch 30 must be shifted into contact with the point Z) of said switch, and this can only be done by throwing the lever 20 to danger or normal position. The shifting of the movable member of switch 30 by the lever 20 closes the circuit of battery ill through magnet 27, and when this magnet becomes excited the armature 32 is drawn against its contact-point, thereby closing the branch circuit and shifting the blade of indicator 28 to safety, thereby showing that the track-section A is unoccupied. It will be observed that the branch through armature 32 forms a part of the circuit of the magnet of valve mechanism of cylinder 6. Hence this armature must be in contact with the stop before the circuit of said magnet can be completed. It will also be observed that when said armature drops from its contact-point it can be returned to its normal position only by shifting the switch 30 to contact-point Z), and such movement of switch can only be effected by returning the signal-lever to danger or normal position. Hence when the signal has been shifted to danger by the movement of a train on track-section A it cannot be cleared until the signal-lever has been returned to normal position.

In the arrangement shown in Fig. 3 the circuit of battery 2-lconsists of armature 23 of track-relay 22, contact-point, wire 37, magnet 27 of indicator 28, wire 38, make-and-break mechanism 39, controlled by cylinder 6, wire 40, magnet of valve mechanism of cylinder 0, wire 41 to battery. In this arrangement of circuits and make-and-break mechanisms the movement of a train on section A will doenergize relay 22, permitting armature to leave its eontact-poil'it, thereby breaking the circuit through the magnet of the valve mechanism of cylinder 0. The escape of fluid-pressure from said cylinder permits the latter to drop, thereby lowering the fulcrum of lever f and also shifting the pin 17 from between. the springs 16 of the make-andbrcak mechanism 3!), thereby forming a second break in the circuit of battery 21-. The movement of the train off from section A will recnergize relay 22, so that armature will be again drawn against its contact-point, but the circuit of battery 24: cannot be completed until the signal-operating lever 20 is returned to normal or danger position, thereby raising the fulcrum of lever l and with it the yoke 5, and by the movement of these parts closing the make -and -break mechanism 39, thereby finally completing the circuit of battery 2a. As long as a train is upon track-section A and the armature 23 away from its con tact-point, the movement of lever 20 from safety to danger position and return and the consequent movement of lever T will simply raise and lower the cylinder (3 without affecting the signal 1; but as soon as the train has left said section and the make-and-break mechanism controlled by relay 22 is closed the shifting of lever & will close make-and-break mechanism 39, thereby admitting air into cylinder 0 and locking said cylinder and the fulcrum of lever 4 as against movement, and the shifting of lever 20 will correspondingly shift the signal.

It will be observed that in the arrangement thus far described it is necessary for an operat-or, having cleared his signal, to permit the entry of a train upon section A and, the train having passed over said section, to restore his lever to normal position before he can again operate the signal.

It in the construction shown in Fig. 2 the operator should leave his lever in clear position, thereby shifting the movable member of switch 80 to contact-point a, and lock the armature 32 against its contact-point by a pin 1-3 or other means, the signal will be automatically returned to clear position by the movement of the train off the section A. In the arrangement shown in Fi the operator can render the operation of his signal automatic by shit'tin g the lever 20 to clear position and closing the switch 42 in the short circuit around make'anttbrcak mechanism This circuit consists, starting from battery 2f, of armature and its contact-point, wire 37, magnet 27 of indicator 28, wires 38 and 411:, switch 42, wire 45, magnet of valve mechan- IIC ism of cylinder 6, wire 41 to battery. It will be observed that in the arrangement shown in Fig. 3 the make-and-break mechanism 39 is substituted for the make-and-break mechanism formed by the armature 32 and its contact-point in the arrangement shown in Fig. 2. It will also be observed that when the armature is locked by the pin 43 against its contact-point, the branch circuit including said armature performs the same function as the shunt-circuit controlled by hand-switch 4:2 in the arrangement shown in Fig. 3. The closing of this switch Will cut out or, rather, form a shunt around the make-and-break mechanism 39 and the operation of the signal thereby rendered entirely automatic.

We claim herein as our invention-- 1. The combination of a signal, a signal-lever, an electrical1y-controlled connection between the signal and its lever, a circuit for said mechanism, an electrically-controlled indicator, the operating-magnet of said indicator being included in said circuit, a branch circuit including the armature of the indicator-magby train movements arranged in the main circuit, and a second make-and-break mechanism in the main circuit and controlled by the signal-lever, substantially as set forth.

2. The combination of a signal, a signal-1ever, an electrically-controlled connection between the signal and its lever, a circuit for said mechanism, a make-and-break mechanism controlled by train movements arranged in said circuit, a second make-and-break mechanism in said circuit and controlled by the si nal-lever, and a shunt-circuit having a manually -operated switch around the second make-and-break mechanism, substantially as set forth.

In testimony whereof we have hereunto set our hands.

JENS G. SOHREUDER. JOHN PRESSLEY COLEMAN.

Vitnesses for Schreuder:

DARWIN S. WoLooTT,

G. I. HOLDSHIP. lVitnesses for Coleman:

H. D. MILEs,

XV. Z. KINNEAR.

Images