US454181A

US454181A - Connector for electric wires

Info

Publication number: US454181A
Authority: US
Publication date: 1891-06-16
Anticipated expiration: 1908-06-16

Description

(No Model.)

B. L. NASH, G. G. STOUT & J. R. DAVIS. GONNEGTOR'POR ELECTRIC WIRES.

No. 454,181. Patented June 16,1891.

W iff gmvewf/oakf UNITED STATES PATENT OFFICE.

' EDMUND L. NASH, GEORGE G. STOUT, AND JESSE R DAVIS, OF PARKERSBURG, VEST VIRGINIA.

CONNECTOR FOR ELECTRIC WIRES.

SPECIFICATION forming part of Letters Patent No. 454,181, dated June 16, 1891.

To all whom it may concern:

Be it known that we, EDMUND L. NASH, GEORGE G. STOUT, and JEssE R. DAVIS, of Parkersburg, in the county of Wood and State of Vest Virginia, have invented certain new and useful Improvements in Connectors for Electric Circuits; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to connectors for electric circuits.

It has for its object to simplify the construction and provide a connector of great efficiency, which will be of such construction that the liability of loss of life due to a lineman or electrician touching two live wires will be reduced to a minimum.

WVith these objects in view the invention consists in certain features of construction and combination of parts, which will be hereinafter described and claimed.

In the accompanying drawing we have represented our invention in a longitudinal vertical sectional view.

Referring to the parts by letter, A denotes a tube of good electrical conductivity, provided near its end with screw-threadedapertures a, and having its ends flared, as shown at a. Around this tube is secured a covering B, of non-conducting material, preferably of vulcanized rubber, which is provided with apertures b, coincident with and of greater area than the screwthreaded apertures a. This non-conductin g coveringextends slightly beyond the ends of the tube A, and is also flared, as at b, 011 a line with the flare of the tube, thus greatly facilitating the introduction of the conducting-wires C C. These wires are held in electrical contact with the tubeA by thumb-screws D, each of which consists of the metallic screw portion d and the insulated thumb-piece cl. The portion cl of the thumb screw works through the screw-threaded aperture a and binds the wire against the tube A, while the shoulder d of the thumb-piece is permitted to follow its screw portion (Z, owing to the enlarged aperture 1). It will thus be seen that when the conducting-wires are clamped against the tube A the metal portion Application filed January 20, 1891- Serial No. 378,404. (No model.)

of the thumb-screw is entirely protected by the non-conducting covering, and that by proj ectin g the ends of the insulating-coverin g beyond the ends of the metal tube it will be impossible for the hands of the lineman or electrician to come in contact with the tube.

iVe are aware of Patent No. 426,200, granted April 22, 1890, to J. F. l\lunsie,wherein is shown a two-part metallic case secured together by screws, and in which is placed a two-part clamp provided with screws for clamping the parts together against the conducting-wires, and around which two-part case is placed a two-part non-conducting covering secured at their adjacent edges in a like manner as the metallic case.

To disconnect the conducting-wires from the Munsie connector, it is necessary, first, that the parts of the non-conducting covering be separated, then the parts of the metallic casin g likewise separated, and then the clamp be loosened, which is not only a difficult operation, but an operation which requires considerable time. By our connector we entirely overcome these drawbacks, for to disconnect or to connect the conducting-wires it is only 11 ecessary to give a partial turn of each thumbscrew. \Ve not only overcome the above objections of the Munsie connector, but can furnish to the trade a connector more simple in construction and operation and at a greatly reduced cost.

Having thus described our invention, we claim and desire to secure by Letters Patent of the United States- 1. A connector for electric circuits, consisting of a metallic tube having screw-threaded apertures near its end, a covering of nonconducting material surrounding the tube and provided with apertures coincident with and of greater area than the aforesaid apertures, and a thumb-screw comprising a metal screw portion and an insulated thumb portion, the screw portion working through the screwthreaded aperture of the tube, and the shoulder on the insulated portion fitting into the aperture of the non-conducting covering, substantially as set forth.

2. A connector for electric circuits, consisting of a metallic tube having flaring ends and provided with apertures near its ends, a covering of non-conducting material surround- In testimony whereof we have signed this IO ing said tube and provided with apertures specification in the presence of two subscribcoincident with the aforesaid apertures, the ingwitnesses.

said covering projecting beyond the ends of EDMUND L. NASH 5 the tube and flared on a linewith flare of GEORGE G. STOUT.

the tube, and insulated set-screws Working JESSE R. DAVIS.

through said apertures, whereby the tube is YVitnesses:

completely insulated substantially as set JOHN E.LEACH,

forth. HERBERT D. Ross.