US224580A - Charles e - Google Patents

Description

0. E. CHINNOOK. Induced Current Guard for Electrical Conductors.

No. 224,580. Patented Feb. 17, I880.

UNITED STATES.

PATENT OFFICE.

CHARLES E. CHINNOCK, OF BROOKLYN, NEW YORK, ASSIGNOR OF ONE HALF OF HIS RIGHT TO JOHN D. HARRISON, OF NEWARK, N. J.

INDUCED-CURRENT GUARD FOR ELECTRICAL CONDUCTORS.

SPECIFICATION forming part of Letters Patent No. 224,5Q0, dated February 17, 1880.

Appllcltion filed December 24, 1879- TO all whom it may concern Be it known that I, CHARLES E. Gnmnoox, of Brooklyn, in Kings county, and State of New York, have-invented certain new and useful Improvements in Electrical Conductors, of which the followingis a specification.

The object of my invention is to obviate induced and escaping currents from reaching line wires or conductors in telegraphs or telephones and interfering with. messages sought to be transmitted through the same.

The invention is especially advantageous for telephones, though applicable also to telegraphs.

The invention consists in the combination of insulators sustaining line wires or conductors and supports therefor, in electrical com-. munication with each other through a guard or other wire or wires common. to said supports, and in communication with the ground, whereby, in a simple manner, provision is afforded for carrying 011' escaping or induced currents at various points.

It also consists in the combination, with insulators sustaining line-wires and supported on shanks or fingers of wood or other suit-able material, of conductors applied to said shanks or fingers, a wire connecting the conductors of these shanks or fingers, and a wire connecting the last said wire with a guard or other wire in communication with the ground, whereby a simple and convenient means of accomplishing the desired end is attained.

The accompanying drawing represents a pole and two line-wires and a guard-wire and appurtenances supported thereby embodying my invention.

A designates a pole, which may be erected in the ground, on a house-top, or in or upon any other suitable support, and provided with a crossbar, B. O designates insulators, which may be of glass or other suitable material and of the ordinary or any other appropriate form. They are fitted upon the ends of shanks or fingers l), of wood or other material, inserted in the cross-bar B, and conductors or a conductor applied to the pole or cross-bar or to the shanks or lingers D serve or serves to intercept any electric currents induced or escaping from an outside point or source of electricity and prevent the same from reaching the insulators O and passing thence to the line-wires E, which they support, so as to interfere with the electric currents transmitted through the same and impair the clenrness of the message conveyed by such currents. 'lhesc line-wires E are connected to the insulators by being wrapped around grooves in them, or otherwise.

Although the insulators should intercept induccd or escaping currents from an outside source, yet 'in practice they become moistor carbonized by smoke from passing trains or adjacent fires, and hence partially conductive,therefore the need of more effective means for intercepting the induced or escaping currents.

As here shown, 1 apply electrical conductors G, consisting of coils or cylinders of sheet metal or metallic foil, between the shanks 0r lingers D and the cross-bar B; but these condoctors do not extend to the insulators C.

vThe two conductors G, as here shown, are

connected by a wire, H, and this who is connected by a wire, I, to a guurd-wiro,1, extendingalong the tops of the pole A, and others of its kind, and supported on insulators C. The guard-wire K is to be connected with the ground at proper points-as, for instance, by a wire, Jand thus it will, besides serving to prevent the contact of undesirable articles, such as crossing line-wires with the line-wires E, serve to carry oh the induced or escaping currents intercepted by the conductors G. A wire not forming a guard-wire could. of course, be used.

In lieu of this construction, cncn conductor G may. be connected directly with the guardwire K, or to a ground-wire, and one 00!]- ductor arranged to intercept induced or es caping currents passing toward either linewire E, and connected to the guard-wire K; or a ground-wire may be utilized,

It will be seen that by my invention 1 pro vide a simple and elfective nicu us of intercepting induced or escaping currents and precluding them from interfering with the proper transmission of messages or impairing the enunciation of the messages.

It is obvious that aniron or other metallic pole, or an iron cross-bar, or both, with wooden \Vh'at I claim as my invention, and desire. to secure by Letters Patent, is-

1. The combination of insulators sustaining v line wires or conductors and supports therefor,

in electrical coinnmnloation with each other through a guard or other wire or WllQS common to said supports, and in communication at snitable points with the ground.

2. The combination, with insulators sustaining line-wires and supported on shanks or fingers of wood or other suit-able material, of conductors applied to the shanks or fingers, a wire connecting the conductors of these shanks or fingers, and a wire connecting the last said -wire. with a guard orother wire in communication with the ground, substantially as and for the purpose specified.

' C. E. OHINNOOK. Witnesses:

EDWIN H. BROWN, '1. J. KEANF

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