US1071669A - Railway signal system. - Google Patents

Description

J. LEITGEB. RAILWAY SIGNAL SYSTEM. APPLICATION FILED OUT. 2, 1912.

Pa'tented Aug. 26, 1913.

l-nuz fltoz" i/9' ooo v i Ky John Lm'Zgebl aon'nnmrese, or GREAT FALLS, MONTANA.

RAILWAY SIGNAL SYSTEM.

Specification of Letters l atent.

Application filed October 2,1912. Serial Nol 723,535.

To all ughom z't may concern:

Be it known that I, JOHN LEi'roEB, citizen of the United States of America. resid-,

ing at Great Falls, inthe county of Cascade and State of Montana, have invented new instance has particular application to and useful Improvements in Railway Signal Systems, of which the following is a specification.

This invention relates to'improvements in railway signal systems and in the present a block signal system.

' In carrying out the present invention, it

is my purpose to provide a signal system whereby two trains may signal each other automatically when approaching or following each other within the danger zone. and

furthermore. it is'iuy purpose to provide a' signal system wherein each tram is equipped with a source of energy and a suitable form of signal and wherein the source of energy on each train will influence the signal-on the other train in such manner that the engineers of both trains will be advised of the condition of the track.- It is also my intention to provide a railway signal system which will embrace the desired features of simplicity, efficiency and durability coupled with cheapness of cost in construction and installation and which will be at all times reliable in use. V

\Vith the above and other objects in V ew, the invention consists in the construction,

combination and arrangement of parts hereinafter set forth in and falling within the scope of the claim. 7

In the accompanying drawing; the figure is a diagrammatic view of my system.

Referring now to the accompanying drawing in detail, T, T indicate two trains which, in the present instance, are approaching each other within the danger zone. The. numeral 1 indicates one line of rails of the trackway, the rails of such line being bonded to form a continuous metallic conductor, while the numeral 2 indicates a conductor suitably supported along-the trackway and divided into sections or blocks 3, by means of insulated material 4. Each tram, T, T is equipped with a suitable source of energy as a battery 5 for instance, and a circuit closer 3 composed, in -the present instance, of a drum formed of metallic segments 7, 8 and insulating blocks or segments 9, 9 separating the metallic se ments and insulating the same one from t e other. Any suitable.

cuit closer. In this form of my invention I employ an electric motor 10 having a worm 11 onthe armature shaft thereof and meshing with a worm wheel 12 secured to the drum of the respective circuit closer. Lead- ,ing from one side of each battery 5 is a conductor 13 terminating in a brush l4 bearing upon the drum of the respective circuit closer, while from the opposite side of each battery leads a conductor 15 grounded upon the axle of the engine as at 16. Each train is equipped with a contact roller 17 bearing upon t e conductor 2 and connected by way of a conductor 18 with a brush 19 which latter bears upon the drum ofthe respective circuitcloser. drum of the circuit closer on each train is a brush 20 connected to one terminal of a conductor 21 which latter extends through the windin s of an' electromagnet .22 and is ground upon the axle of the respective car or engine as at 23. I

Arranged upon each train is a suitable torni of signal,-as a bell 24 disposed within a tnormally open local'circuit including a source of energy as a battery 25 and a circuit' closer 26, the latter being held normally in circuit opening position by means of the hooked extremity of an armature 27 disposed within theinfluence of the respective magnet 22.

p In practice, the drums of the circuit closers on the trains are rotated in such manner that the segment 7 of the circuit closer on one train bridges the brushes 14 and 19,

while the similar segment on the other train bridges the brushes 19 and 20, as clearly illustrated in the drawing. Assuming the circuit closers to be in the position shown in the figure of the drawing, the battery 5 on train T will supply energy to the magnet 22 on train T whereby the armature 27 on the last-mentioned train will be actuatedto release the circuit closer 26 and so close the local signal circuit. The path of the current from the train T to the train T may be traced as follows; battery 5 on train T, conductor 13, brush 14, segment 7 brush 19, conductor 18, contact roller 17, conductor 2, contact roller 17 :of train T, conductor 18, brush 19, segment 7 of the last mentioned train, brush 20, electromagnet 22, car axle and wheel, line of rails 1, the wheel and axle of train T and conductor, 15. In the continued movement of the drums of the PatentedAug -26, 1 91 3.

Also contacting with the means may be employed for rotating the circircuit closers under the action of the driving motors thereof, the segment 7 of the circuit closer on t-rainT bridges'the brushes 19 and 20, while the segment 8 of the circuit closer on train T bridges the brushes 14 and 19. Thus the electromagnet 22- on train T is energized with the efl'ect' to close the local signal circuit of such train.

From the foregoing description taken in connection with the accompanying drawing, the construction and mode of operation of my invention will be readily apparent. It is to be understood that the circuit closers of the trains are timed or operated in such manner relatively to each other that the brushes-14 and 19-of one train are bridged,-

While the brushes 19 and 20 of the other train arebridged. Thus, the signals of the trains are energized or operated successively 'or one after the other.

I claim:

In a railway signal system, a sectional conductor a continuous conductor, a source of energy carried by each train and havin one side in electrical communication witli one of said conductors,

a circuit closer upon each tram comprising a drum embodying two metallicsegments insulated from each .other, .a motor for-"rotating; said drum, a

brush adapted to contact withthc segments of said drum-and connected, with the other side of sa d source of energy, a second brush bearing upon the drum and electrically con-i nected withthe other conductor, a third brush bearingupon said drum and clectri cally connected with the first-mentioned conductor, a magnet in electrical communicaone s'egi nentof the drum, while the second and last-named brushes of another train are bridged'by one of the segments of the respective drum whereby the source of energy on one train will energize "the magnet; on another-train.

In testimony whereof in presence of two witnesses.

. JOHN LEITGEB; Witnesses:

r v ROBERT ECROWLEY,

. BENJ. J. E'vANs;

Copies of this pat ent may be obtained for five cents each, by addressing the Washington, 1!. G.

. Commissioner of Patents.

I atlix my signature

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