US514980A - Switchboard system - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1 D. H. WILSON.

. SWITGHBOARD SYSTEM. No. 514,980. PatentedlebQ 20, 1894.

INVENTOR- A TTORNEY 2 Sheets-Sheet 2-.

(No Model.)

' D. H. WILSON.- SWITGHBOARD SYSTEM. N'0.'-: 5'1- 4, 98 0-. Patented Feb. 20, 1894.

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NITED STATES PAT NT OFFICE.

DAVID H. WILSON, on CHICAGO, ILLINOIS.

SWITCHB'OARD SYSTEM.

SPECIFICATION forming part of Letters Patent No. 514,980, dated February 20, 1894.

' Application filed September 8,1893. Serial No. 485,102.- (No model.)

To all whomit may concern.-

7 Be it known that 1, DAVID H. WILSON, a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois, have invented a new and useful Improvement in Swltchboards, of which the following is a specification.

My invention relates to switchboards for electric fence stations and has for its object the production of a switch board having'certain novel features which are set forth in the following description.

By the term electric fence I mean a fence made of wires or strands of some conducting material connected with a battery or generator in such a manner that when an animal standing on the ground comes in contact with such conducting wires a circuit will be completed through the body of the animal, caus- Ing said animal to receive a shock.

Referring to the accompanying drawings: Figure l is a front View of the switch board Fig. 2 is a diagram of the circuits of the switch board as seen from behind.

Like letters refer to like parts throughout. A is the switch board proper to which are secured the telephone transmitter A, the telephone receiver A the bell A the switches B", B, B 13 connected to the outgoing wires of the fence which in this case are four in number, and the switches 13, B B, B connected to the incoming Wires of the fence.

B is a switch by which the system is grounded. I

Referring to Fig. 2, O is a generator which is connected by the wires G to the binding posts D, D. I

O is a conductor leading from the binding post D to the switches B B B B and B 0 is a conductor leading from the binding postD through the coil of the electro-magnet G to the switches B, B, B B

0 is the armature of the electro-magnet 0 Wis a contact point against which the armature G rests when said armature is attracted by the magnet 0 O is abattery which works the bell A E is the telephone battery, the terminals of which are connected to the binding posts E E E is a conductor leading from the binding post E to the transmitter A.

E is the primary coil of an induction coil having one end connected to the transmitter A and the other end connected to the contact plate E I E isa wire leading. from the strip E back to the battery E.

E is the secondary coil of the induction coil having one end connected to the contact plate E and the other end connected to the binding post E E is a conductor-leading from the strip E to the ground;

E is a conductor connecting the binding port E with the binding post D E is a telephone receiver.

E is a lever upon which the telephone receiver is hung when not in use. I

E is a spring which tends to move the lever E away from the contact point E The contact plate of the switch B is connected by the Wire F to the frame F of a telegraphic instrument which is represented diagrammatically with its several parts detached so as to allow the different circuits to be easily traced. The frame F is provided with the slots F F in which work the pins F F By this means the frame F can be moved in or out of contact with the binding posts F F l is the key, F the electro-magnets and F the armature of the instrument.

F is a battery one pole of which is connected to the electro-magnetF and the other pole grounded at F F is a contact point which is connected by the wire F to the binding post F F is a strip by which the binding posts F and F are connected.

G is a wire connecting the wire F with the binding post D K, K K, &c., are the contact plates of the different switches. The contact plates K and K of the switches B and B are connected to the binding posts D and D The contact plates K K K and K of the switches B B B and B are connected to the binding posts D D D D Switch 13 is connected to binding post D which is grounded by the plate H.

The outgoing wires of the fence are connected to the binding posts D D D D and the incoming wires to the binding posts. D D D D The first or top wire of the fence is connected to the binding posts D and D, the second wire to the binding posts D and D", 850.

The use and operation of my invention are as follows: When the instruments are in the position indicated in Fig. 2,the circuit through the generator G is open. If an animal standing on the ground touches any of the wires of thefence the circuit will be completed through its body and it will receive a shock. When the circuit is completed, the magnet C attracts the armature C and brings it in contact with the contact point 0 This completes the circuit through the bell A and sounds the alarm. Suppose the animal touches the top wire of the fence the circuit will be traced as follows: from generator 0 to binding post D, thence to switch B, thence along wire F to the base F of the telegraph instrument, thence along wire G to binding post D thence along the bottom wire of the fence to the animal, thence to ground, thence to plate I-I, thence back to the generator.

The circuit around the second wire of the fence is as follows: from generator 0 to binding post D, thence to switch B, thence to conducting point E thence along lever E thence along spring E to binding post E thence by wire E to binding post D thence along the second wire of the fence to the animal, thence to ground, thence to plate H, thence to binding post D thence back to the generator.

When it is desired to test the fence for breaks, the operation is as follows. If it is desired to test the bottom wire, switch B is opened and switch B closed which completes the circuit through the generator and the fourth or bottom wire of the fence if that wire is all right. The circuit will be traced as follows: from generator 0 'to binding post D, thence to switch B thence to binding post D thence along the bottom wire of the fence to binding post D, thence to switch B thence by wire 0 back to the generator. If when the switch 13 is closed the bottom wire of the fence is not broken, the electro-magnet C will attract its armature and complete the circuit through the bell A and cause said bell to ring. If the bell does not ring the bottom wire of the fence is broken. The third wire of the fence is tested in the same way by opening switch B and closing switch B If when in this position the bell A rings the third wire is all right. The remaining wires of the fence are tested in the same manner, viz. by closing switches 13 and B"'.

If a person anywhere along the fence desires to talk to a person at the station he grounds one wire of the hand telephone with which he is provided and taps the fence with the other wire a certain number of times, the number being arranged between the two men.

This notifies the man in the station that he is wanted at the telephone. He then takes down the receiving telephone E. The spr1ng It" then moves the lever E until said lever moves out of contact with the contact point E and the strips E and E come in contact with the contact plates E and E. The current 1s then broken through the generator and completed through the transmitter A and Will be traced as follows: from battery E to binding post 0', thence through wire to transmitter A, thence through the primary 0011 E thence through contact plate E, strip E and wire E back to battery E. The circuit through the receiving telephone will be traced as follows: from secondary coil to binding post E thence through the receiving telephone E thence to binding post E thence by Wire F to binding post D, thence along the fence wire to the hand telephone of the man along the fence, thence to ground, thence to plate I-I, thence to binding postD thence along conductor E to strip E thence to contact plate E and thence back to the secondary coil E When the men cease talking the receiving telephone E is hung up again which breaks the circuit through the rece1ving and transmitting telephone.

If it is desired to use the telegraph instrument the man along the fence will g1ve the prearranged signal. The man at the station then moves the base F of the telegraph 1nstrument in the direction of the arrow until the binding post F and F are connected by the strip F and the connection between the base F and the binding post F is broken. When in this position the generator G is out of circuit and the battery F in circuit with the instrument. The telegraph instru ment is now ready for use. The circuit will be traced as follows: from battery F through clectro magnet F thence to binding post F thence along strip F to binding post F thence to key F, thence to contact polnt F (when the key is pressed down) thence along wire G to binding post D thence along fence wire to operator, thence to ground, thence to plate F and thence back to the battery F When the message has been completed the base F of the telegraph instrument is moved to the position shown in Fig. 2 which breaks the circuit through the telegraph instrument and puts the generator 0 again in connection with the top wire of the fence.

If the top wire of the fence should be broken and fall on the ground so as to ground that wire it can be thrown out of circuit by opening switch B, without affecting the remaining wires. Any of the wires can be thrown out of circuit should they become grounded in the same manner, viz., by opening one of the switches B, B, B B corresponding to the grounded wire.

I claim- A switch board for an electric fence having thereon binding posts and suitable connec tions for the fence wire and the generator, a

tact with said lever, a telegraphtinstrument having a movable base, a strip attached to said base, contact points in proximity to said strip, a third contact point in proximity to [0 said base, and suitable connections whereby when the said telephone and telegraph instruments are connected to the fence wires, the connection of said wires with the generator is automatically broken, substantially as described.

DAVID E. WILSON.

Witnesses:

FRANCIS W. PARKER, WALTER J. GUNTHORP;

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