US911623A - Railway-crossing signal. - Google Patents

Description

H. W. SOUDER.

RAILWAY GROSfiING SIGNAL. APPLICATION FILED MAY 20, 1907.

91 1 ,623, Patented Feb. 9, 1909.

2 BHEETg-SHEET 1.

WITNESSES v Q a 74 /NVENZgR W). ATTORNEY H. W. SOUDER.

RAILWAY GROSSING SIGNAL.

APPLIOATIQR FILED MAY 20, 1907.

' Patented Feb. 9, 1909.

A TTOHNE Y W mm T N. n M u W 2 W 7 2 114113. w 2 m M6 1 1 J 9 HOWELL W. SOUDER, OF TAMAQUA', PENNSYLVANIA.

RAILWAY-CROSSING SIGNAL.

Specification of Letters Patent.

Patented Feb. 9, 1909.

Application filed May20, 1907. Serial No. 374,639.

To all whom it may concern:

Be it known that I, HOWELL W. SOUDER, a citizen of the United States of America, and a resident of Tainaqua, county of Schuylkill, State of Pennsylvania, have invented certain new and useful Improvements in Railway- Crossing Signals, of which the following is a specification.- My invention relates to railway signals and has for its object the production ofa signal controlling the crossing of a steam railroad or other form of heavy traflic road by a trolley road. In such situation it is difficult to devise a simple form of signal'which may be operated by the trolley car automatically to show whether or not a train is approaching upon the main line of road and have said signal also controlled by the train upon the main line of road whether or not it is under the control of the trolley apparatus. invented a simple form of apparatus which overcomes all these difiiculties and the best form of it at present known to me is illustrated in the accompanying two sheets of drawings, inwhich:

Figure 1 is a diagram of the railroad crossing and electrical connections therefor the parts being in the position assumed when there is no train Within the danger zoneon the main line and a trolley car has just entered the signal zone on the trolle road.

-Fig. 2'is a similar diagram showing t 1e position of the partswhen a train is within the dan er zone on the main line.

track, and 3 and 4 the railsof the main road T roughout the drawings like reference figures indicate like parts. 2

' 1 and 2 represent the rails of-the trolley which crosses the trolley track. As shown these rails on the main or steam road are "separated at the limits of the danger zone from the remaining portions of the track by blocks of insulation 5, 5.

(Sand 7 are contact makers located near the trolley wire 9 at the limits of the signal zone.

10 represents a trolleywheel in operative contact with the contact maker 6.

' 1'1 is a variablejsignal located at or near the crossing of the tracks and comprising one or more incandescentclectric lamps 12, 12, the movable shutters 13, 13, adapted to drop in front of said lamps and the electromagnet 14 arranged when energized to lift or swing the shutters away from the frontof the I have lam s. This signal lantern is preferably of tie form shown in detail and fully described in my pending application Serial No. 378,048 filed June 10, 1907, though it may be of other construction.

15 is a circuit extending from the trolley wire. or other feed wire through the controller 16 which is adapted to alternately make and break the circuit. This controller is preferably of the form illustrated and described in my Patent No. 789,240, dated May -9, 1905, but may be of any other suitable construction. As shown, the controller is provided with a ratchet wheel with which the pawl 17co6perates to produce a step by step rotation, the ratchet wheel having twice as many teeth as the circuit controller has arms. This pawl is controlled by the magnet 18 in the circuit 19, which extends from the contact maker 6 to ground, or to one side of the rails, as 2. 8 is a branch connection from one wire of the circuit 19 to the contact maker '1.

20 is a pivoted switch, one end of which 00- operates with the contact 21 which is connected to the circuit 22, which includes the lantern magnet 14. This circuit 22 connects with the circuit 23 which extends through the lamps to the ground or to one of the rails,

24 is any convenient form of sprin which tends to swing the switch lever 20 in t e position shown in Fig. 2 so that the other end of said switch lever-bears upon the contact 25, which is connected to the circuit 26, which extends to circuit 23, cutting out .the magv net 14.

27 is a switch operating magnet located so that when energized-it will swing the switch lever 20 in a direction opposite to that in which the spring 24 tends to swing it. This switch magnet 27 is in a local circuit 28 to .which current is supplied by battery 29, or

other source of current. This circuit 28 has a shunt circuit 30 connected to the two insulalted rails 3 and 4 of the main railroad.

This circuit when closed, as by a car 31, cuts.

out the magnet 27 and denergizes thesame.

The operation of my invention is as follows: Normally, the shutters 13 are down in the position shown in Fig. 2, there being no current through the lantern'magnets 14 and the lam s are dead, there being no current sup lie to them, the circuit 15 being broken at t e controller 16. The switch magnet 27 tion shown in Fig. 1.

g late shown in being energized, however, by current in local circuit 28, the switch lever 20 is in the posi- W hen a car enters either end of the signal zone on the trolley track, its trolley wheel 10 makes connection with one of the contact makers, as 6, energizes the magnet 18, turns the circuit controller 16 one tooth, thereby establishing connection of the circuit 15 with the trolley wire 9 or other feed wire. This sends a current through the switch 20, contact 21,

The shutters 13 are usually made of some translucent material red in color so that the lamps will show through them at night as long as said shutters are in their lower position. Consequently the signal shows red in daylight when the shutters are down and red at night when the shutters are down and the lam s are, lighted. a car is on the insu- & section of rails of the main road either when the trolley wheel makes contact with the contact maker 6 or 7, or after said contact has been made, as indicated in Fig. 2, said car will connect the two insulated rails '3 and 4 and establish the low resistance Accordingly the current for the trolley wire through circuit 15 will go to contact 25,

through circuit 26 and 23 and the lamps to the ground instead of through the magnet 14. As a result, shutters 13, 13, will drop and show red either in the day or at night, indi.

eating to the trolley mot'orman that a train or car has entered the danger zone on the main road, and that he must wait until the same has passed before attempting the crossing. W hen this train or car upon the main road leavesthe danger zone the shunt circuit around the magnet 27 will be destroyed, this magnet will again become operative, the arts will resume the position 1g. 1, current will be again directed through the magnet 14, and the variable signal thrown to safety by the lifting of the shutters 13, 13.. The trolley car can t en make the crossing and on going out of the signal zone will make contact with the 4 other contact maker, as 7, advancing the circuit controller 16 another tooth, breaking the circuit 15, extinguishing the lamps 12, 12 and setting the signal back at danger. Trolley cars traveling in the o posite direction will produce the same resu ts through the contact, maker 7 and branch wire- 18. .A second trolley car approaching the signal zone while one car'is 1n the same will see the y This breaks the contact at 21 and establishes it at 25.

signal in abnormal condition, the lamps glowing and the shutters lifted, and will note that a car ahead of it is in the signal zone. Such second car will wait until the first car has passed out of the signal zone at the other end. It may, however, enter the signal zone before the first car passes out, thereby breaking the circuit 15 and returning the signal to danger, and retainin it there, while the first car is in the bloc The second car should not attempt the crossing until the signal goes to safety, which will be accomplished on the passing out of the first car from the signal zone, if no'train or car is within the danger zone on the main line. If atrain is withinthe danger zone the signal cannot go to safety under any circumstances till the danger zone is cleared.

The advantages of my invention comprise its dual control by cars 'on the two lines of road with the predominating influence of the car on the main line of the road, whereby the signal is brought to or retained at danger whenever a car is within the danger zone on said main road, Whether or not a car is within the signal zone upon the other road, While at the same time other features of the signal ap aratus, to wit, the lamps, are under the so e control of the cars upon the crossing road, and always indicate the condition of that road to an approaching motorman.

It is evident of course that other forms of variable signal might be em loyed, other forms of circuit controller anc the various details of construction and arrangement of circuits varied without departing from the distinguishing featuresof my invention.

Having, therefore, described my inven tion, I claim:

1. In a signaling. apparatus for railroad crossings, the combination of a variable signal normally set at danger, an insulated section of rails on the main road extending a certain distance either side of the crossing, signal actuating means extending a certain distance from the crossing along the crossing road and adapted to be operated by a passing car, and means operated by a car entering the insulated section of the nfain road to insure the retention of the signal at danger while such car is on said insulatedsection.

2. In a signaling apparatus for railroad crossings, the combination of a variable signal normally set at danger, an insulated section of rails 0n the main road extending a certain distance either side of the crossing, signal actuatin means extending a certain distance from t 1e crossing along the crossing road and adapted to be operated by a passing car to set the signal at safety when no car is on the insulated section of the main road, and means operated by a car entering sure return to and the retention of the signal at danger while such car is on said insulated section. ,P h

3. In a signaling apparatus for railroad crossings, the combination of a variable signal normally set at danger, an insulated section of rails on the main road extending insulated section of the main road to insure the retention of the signal at danger while such car is on said insulated section.

4. In a signaling apparatus for railroad crossings, the combinatlon of a variable signal normally set at danger, an insulated section of rails on the main road extending a certain distance either side of the crossing, signal actuating means extendin a certain distance from the crossing along t he crossing road and adapted to be operated by a pass ing car, said signal actuating means coniprlsing an electric circuit closed by the approachin car, and circuit breaking means controlle by the car on the insulated section of rails on the main road.

5. In a signaling apparatus for railroad crossings, the combination of a variable sig-' nal normally set at danger, an insulated section of rails on the main road extending a certain distanceeither side of the crossing, signal actuating means extending a certain distance from the crossing along the crossing road, and adapted to be operated by a passing car, said signal actuating means comprising an electric circuit closed by the car when approaching, and opened by the car when leavmg the crossin and circuit breakin means controlled by the car on the insulate section of the main road. T

6. In a signaling apparatus for railroa crossings, the combinatlon of a variable signal normally set at danger, an insulated section of rails on the main road extending a certain distance either side of the crossing, signal actuating means extending a certain dis- .tance from the crossing along the crossing road andadapted to be operated by a passing car, said signal actuating means comprising an electric circuit, anormally open switch in said circuit, a normall excited magnet hold ing said switch close and a shunt short circuit around said magnet normally broken between the two lines of rails of the insulated section of the main road.

7. In a signal system the combination of a signal lantern, a movable colored translucent shutter therefor, an electric lamp therein, electrically operatedmeans for moving said shutter and circuit connections to said lamp and shutter operating means, said circult connections comprising a switch adapted to through the send ,the current alternately h amp and s utlamp alone and throughboth ter orierating means. v 8. i

n a slgnaling apparatus for railroad crossings, the combination of a variable sig-- nal normally set at danger, comprising a signal lantern, a normall closed colored translucent shutter there or, an electric lamp therein, an electromagnet for opening said shutter, circuit connections to sald lamp and magnet, including a switch adapted to'send current either through the lamp alone or through both lamp and magnet, means for supplying current to said circuit located along the crossing road at either side of the crossing and adapted to be operated by a passing car, an insulated section of the main track extending on each side of the crossing, a second electromagnet, battery and circuit therefor normally operating to hold the switch in position to send the signaling'current through both lamp and shutter operating magnet, and a shunt short circuit for said second magnet broken only by the gap between the two lines of insulated rails of the main track.

Signed at New York, N. Y. this 17th day of a May, 1907.

HOWELL w. SOUDER.

. Witnesses:

A. PARKER SMrrH, M. G. CRAWFORD.

Images