US879650A - Electric transmission of intelligence. - Google Patents

Description

PATENTBD'PEB. 1s, 1.908.

I. KITSEB. ELECTRIC TRANSMISSION OF INTELLIGENGE.

APPLIGATION FILED MAY 14. 1906.

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ISiDOR- KITSEE, OF PHlLADEl'JPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF LATlA, OF PHILADELPHIA, PENNSYLVANIA.

TO WILLIAM ELECTRIC TRANSMISSION OF INTELLIGENCE.

Specification of Letters Patent.

Patented Feb. 18, 1908.

Application filed l/[aylln 1906; Serial No. 3163147.

-ransmission of Intelligence, of which the following is a specification.

My invention relates to an improvementin electric transmission of intelligence. It's object is to protect the instruments used in lines of transmission, such as telegraph instruments, from the inductive influence of neighboring wires;-

1t is also. the aim of my invention to pre-- vent the undue accumulation of such inductive influence on a line of transmission.

it is well known that a line carrying heavy current will induce on a neighboring wire impulses through the variations of such cur- -rent and more so, if these heavy currents are alternating or phase. Induced impulses will readily flow through electro-static devices, such as condensers, but their flow-will be retarded throu h such devices as inductive resistances, an il two paths are presented for the flow of such induced impulses, one path including condensers and one path including inductive resistances, the impulses will select the path with the condensers and more so if this path leads to the ground. In carrying out my invention, I have taken advan tage of these properties'of induced impulses in the following manner: The receiving devices in telegraphy consist generally of electro-inagne tic coils, offering more or less inductive resistances, and I therefore shunt these coils with electro-static devices, such as condensers, connecting these condensers to the ground. But as in a wire of comparal tively great length, the accumulated induct- 'ive influence is of such volume that they may still interfere with the working of the receiving devices, I insert in thchne at different points inductive resistances, placing againa shunt including condensers, around such resistances and connecting these condensers, as the first named condensers, to the ground. To still further prevent the accumulation of the inductive'influcnco, I place also at different points in this line inductive resistances, but do not shunt the same. lm ulses induced in this line at any point, wil not flow over the whole line, but wi ll seek the path of least resistance for them, that is, the path consisting of the condensers and ground, and the undue accumulation of induction, even in a very long wire,.is thereby prevented.

Referring to the drawing, which illustrates in diagrammatic view my invention, 1 is the circuit carrying the inducing currents 8 the circuit for transmission of intelligence, here shown as a telegraph line; 3 are the electro magneticreceiving instruments inserted in said line. I have not shown in this line the transmitting devices or the necessary batteries, as the same has no'influence on my invention, are well known and may differ in the different typespf transmission.

9 are the inductive resistances placed in the lineand shunted; 10 are the inductive resistances placed in the line but not shunted the shunt around the receiving device as well as the inductive resistances 9 comprises the condensers 5, 5, connected through the wire 6 to the ground E.

Having now described my invention, what I claim as new and desire to secureby Letters Patent is: I

.1. In combination with a power line, a line of transmission positioned in the region of the inducing influence of said power line and means to shield the terminal devices from the induced impulses, said means comprising a series of mpedance coils distributed along the line in series, a direct shunt for one or the other of said impedance coils, said shunt including capacity devices and a ground connection for said shunt.

2.111 combination with a power line, a line of transmission positioned in the inducing region thereof, clectro-magnetic receiving devices for the line of transmission and means to shield said devices from the induced impulses, said means comprising for the devices a direct shunt having no impedance but capacity and a ground for said shunt and further comprising a series of impedance coils distributed along the line, a direct shunt, having practically no inductance but capacity, for said coils and a ground therefor.

3. Means to induce impulses in a telegraphic line connected to clectro-magnetic receiving devices, said. means comprising a. 195 neighboring wire carrying a phase current, in combination with means to shield said re.- ceiving devices from the induced impulses,

said means comprising a direct shimt with practically no impedance but capacity for each of said receiving devices, aground for each of said shunts and further comprising a series of impedance coils distributed along the line, a direct shunt with practically no impedance but capacity 'for sa d coils and a ground for each of said shunts. 4. A telegraphic circuit, v electro-magnetic receiving devices in said circuit and means to shield said receiving devices from impulses induced through neighboring wires, said means comprising a direct shunt with practically no impedance but capacity for each of said electro-magntic devices, a ground -I SIDOR KITSEE.

Witnesses-z MARY C. SMITH, ALVAH RITTENHOUSE.

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