US1448116A

US1448116A - Connector for electrical conductors

Info

Publication number: US1448116A
Application number: US379543A
Authority: US
Inventors: Richard A Haislip; Edgar M Matthews
Original assignee: American Telephone and Telegraph Co Inc
Current assignee: AT&T Corp
Priority date: 1920-05-07
Filing date: 1920-05-07
Publication date: 1923-03-13
Anticipated expiration: 1940-03-13

Description

R. A. l IAlSLlP ET AL CONNECTOR FOR ELECTRICAL CONDUCTORS Filed May '7, 1920 IHIMHH 44 I NVENTORS ATTORNEY Patented Mar. 13, 1923.

"warren era rags rarest QFFHQEG RICHARD A. EAISLIP, OF MONTCLAIR, NEWJERSEY, AND EDGAR M. MATTHEWS, OF I JAMAICA, NEW YORK, ASSIGNORS TO AMERICAN 'TELEPHONE AND TELEGRAPH COMPANY, A CORPORATION OF NEW YORK.

CONNECTOR FOR ELECTRICAL CONDUCTORS.

Application filed May 7,

To aZZ whom z'fl may concern:

Be it'known thatwe, RICHARD andEDoAn M. MATTHEWS, residing at Montclair and Jamaica, in the counties of Essex and Queens and States of New Jersey and New York, respectively, have invented certain Improvements in Connectors for Electrical Conductors, of which the following is a specification.

' the conductors.

This invention relates to connectors for attaching electrical conductors to each other, and more particularly to devices for bridging branch or drop wires to main line wires.

In the construction of telephone, telegraph or other electrical transmission lines, galvanized iron wires. are frequently employed as main conductors therefor, .At'various points along the main conductors, connectors are attached to said lines for the pur pose of bridging branch line conductors thereto. These branch conductors may-be of galvanized iron or copper. When both main and branch conductors are composed of similar metals, no difi'iculty due to electrolytic action has been experienced between When, however, said wires are composed of dissimilar metals, considerable trouble has been caused by electrolytic corrosion between the wires and connectors.

Accordingly, one of the principal objects of.

The invention will now be more fully understood when considered in connection with the accompanying drawing, in which Figure 1 is a perspective view of the improved connectors own as having a main conductor and a branch conductor attached thereto; and Fig. 2 is an exploded view of the elements of said connector.

Referring to the drawing. 5 is a cylindrical portion of a stud, preferably made of galvanized iron, provided with a head 6,

A. HAfSLIP side of the cylindrical portion 5 and forms 1920. Serial No. 379,543..

shown in the present instance as of hexagonal form. A dlagonal groove 7 is cut at one a' hook-shaped jaw 8. The groove 7 terminates in a transverse slot 9 formed in the head 6, in which the main conductor may be seated. Suitably secured to the portion 5 is a threaded spindle 10,-preferab'ly. composed of brass. Carried on the spindle 10 is a nut 11, and said spindle may have its end spun over to prevent the-removal of the nut. The spindle also carries a pair of washers, 12 and 13, and an insulating washer 14. The

washers

12 and 13 are preferably madeof brass and the washer 14 of somesuch material as hard rubber or the like. Movable longitudinally on the portion 5 is a hollow cylindrical collar-or bushing 15 'which is controlled in its movement by the adjustment of nut 11. The collar or bushing 15 serves as a housing .for the member 5 and spindle 10 at their connecting point and the washer 14 cooperates with said collar in affording protection from the elements, thereby alleviating corrosion between the dissimilar components of said connector. The washer 14 further retards corrosion by keepingsaid components in separated relation. When the nut is tightened,,it serves to clamp the pair of.

washers

12 and 13 together, thereby securely retaining a drop or other branch conductor 16 therebetween. The tightening of said nut also forces one end of the collar against the lower portion of the head (3, thereby keeping the main conductor securely seated in the slot 9.

To attach the connector, the nut 11 is unscrewed on the spindle 10 and the sleeve and washers'become loosened. The main conductor is then inserted in the groove 7 and the branch or drop conductor is inserted between the

brass washers

12 and 13 and looped about the spindle 10. When the conductors are in position, the nut 11 is t1ghtened andthe conductors 16 and 17 are retained in place as previously outlined.

This compact and readily attachable or removable connector will provide means for connecting a mainline conductor and a branch line conductor in a simple manner and will alleviate electrolytic corrosion between the parts of the connector and attached conductors, thus minimizing the breaking of the conductors at points where the branch conductor is associated with the main conductor. 7

While the elements of this connector have been specified as being preferably composed of certain materials, it will be understood that other materials may be employed, and that this invention is adapted for use with wires of similar or dissimilar metals. 7

From the foregoing, it is thought that the construction, operation and many advantages of the herein described and outlined invention will be apparent to those skilled in the art without further description and it will be understood that various changes in size, shape, proportion and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

What is claimed is:

lhA coupling for connecting electrical conductors, comprising a main member oi":

one kind of metal provided with a slot for receiving one of the conductors, a collar of the same kind of metal for clamping the conductor in said slot, a spindle of a dissimilar metal attached to the main member in conductive relation therewith, means associated with said spindle and adapted to cooperate therewith for providing a connection for asecond conductor said means also being of dissimilar metal, means for holding means said collar and last mentioned means in clamped posltion, and means interposed between said collar and said means for connecting the second conductor for alleviating electrolytic corrosion of the components of said coupling and said wires.

2. A coupling'fo-r connecting electrical condue-tors, comprising a main member having a head portion and a cylindrical portion of one kind of metal, a slot in said head portion for receiving one of the conductors, a collar of the'same kind of metal movable longitudinally on said cylindrical portion for clamping the conductor in said slot, at spindle of a dissimilar metal attached to the cylindrical portion, means movable on said spindle and. adapted to cooperate therewith for providing a connection for the second conductor, said means being also of dissimilar metal means movable on said spindle for holding said collar and last mentioned means in clamped position, and means on said spindle interposed between said collar and said means for connecting the second conductor for alleviating electrolytic corrosion of'the components of said coupling and said wires.

In testimony whereof, we have signed our names to this specification this 5th day of May,1920. I

' RICHARD A. HAISLIP.

EDGAR M. MATTHEWS.