US2262372A - Electrical connector - Google Patents

Description

Nov. 11, 1941. J. ROGOFF ELECTRICAL CONNECTOR Filed Feb. 24, 1940 I h- ZZ BY TM of the connector.

Patented Nov. 11, 1941 UNITED STATES PATENT OFFICE ELECTRICAL CONNECTOR Julian Rogofl, New York, N. Y.

Application February 24, 1940, Serial No. 320,669 2 Claims. 21. 24-243) This invention relatesto an electrical connector, and more particularly to a split-bolt having a resilient separable element for applying spring pressure to the elements clamped by the connector. I

I have found that in split-bolts of the foregoing type, the conductors being of softer material than .the connectors, sometimes "creep under the clamping pressures thus loosening the connections and reducing'the electrical efilciency This is especially true oi. aluminum conductors, and where the elements or wires are subject to vibration.

Accordingly, a primary object of my invention consists in providing a resilient element in the assembly which will keep the elements under continual pressure and in good contact with each other.

Other objects'are to provide a resilient element, that is bowed to secure continuous resiliency; that is in embracing relation to the bolt to prevent rotation and displacement thereon; and which may include portionsdisposed betweenthe shank portion of said bolt. Y Y

I accomplishthese'and .other objects and obtain my'new results as will be apparent from-- the device described in the following specification, particularly pointed out in the attached claims, and illustrated in the accompanying drawing, in which:

Fig. 1 is a front view of the bolt, with a portion thereof in section.

Fig. 2 is a sectional view of the bolt in the reference numeral In indicates the bolt, having a head I I provided with flat sides l2 for engagement withaxw'rench or other tool. Integrally extending from the head H are a pair of spaced apart externally threaded shanks l3 and i4, terminating in an engaging nut l5 and washer I6 mounted thereon.

The washer I6 is provided with an element engagingsurface ll, of sufficient length to avoid scoring the elements It contained between the shanks l3 and- H of the bolt. At each end of the engaging surface H, are integrally mounted sections l9 against which the upper surface 20 of the nut rotates. The washer is of a width enabling it to be spaced freely between the shanks of the bolt, and extends slightly below the lower surface 2| of the nut so that sections 22 may be swedged therefrom to capture the nut l5 between the sections 22 and sections l9.

Thus, as the nut threadly rotates on the threads of the shanks, the washer is moved linearly in the space between the shanks. of the bolt. Since the washer engages the element l8, it is of substantially non-yielding material.

The resilient element 25 is provided with cutouts 26 and 21 to accommodate the shanks l3 and ll of the bolt, and preferably contain portions 28 and 29, which are bowed, as shown in Fig. 1, which extend from the body of the resilient element, from opposite sides of the cut-outs, towards each other and have a width and length suflicient'to allow them to be disposed in the space between the shank portions, and to be depressed under pressure, without engaging each other at their free ends.

The resilient element may be constructed so as to embrace the bolt adjacent to its head H, or may obviously be placed on said bolt, after the elements have been inserted thereon, so that it will contact the conductor element l8, and the engaging surface ll, of the washer It. In

the latter instance the'cut- outs 26 and 21 may approach in outline the circumference formed by the shanks l3 and I4. Additional resiliency is obtained.

A further spacing element 30 may be used to space the conductor elements from each other,

especially where they possess diiferent electroout departing from the spirit of my invention,

and, therefore, I claim broadly the right to employ all equivalent instrumentalities coming within the scope of the appended claims, and

by means of which, objects of my invention are attained and new results accomplished, as it is obvious that the articular embodiments herein bly mounted on said spaced apart shank portions I of said bolt, the follower of said assembly being entirely of substantially non-yielding construction, said nut being arranged to move said follower longitudinally of said bolt in a straight-line non-rotatable manner as the nut is screwed longitudinally of the bolt so as to clamp one or more elements between said follower and a part of said bolt, and a resilient washer interposed between the wire elements and the bolt-head and provided with an aperture shaped to engage the side walls of said bolt-head, and two inwardly extending bowed portions positioned between the spaced apart shank portions, whereby tightening the nut and clamping the wire elements will 2,262,872 7 shown and described are only some of the many cause the inwardly extending bowed portions to be compressed.

2. A wire connector comprising a bolt-head with two'flat parallel sides and having spaced apart shank portions screwthreaded at their outer faces and V-shaped at their junction thereof, a nut and follower assembly mounted on said spaced apart shank portions of said bolt, the follower of said assembly being entirely of substantially non-yielding construction, said nut being arranged to'move said follower longitudinally of said bolt in a straight-line non-rotatable manner as the nut is screwed longitudinally of the bolt so as to clamp one or more elements between said follower and a part of said bolt, and a resilient washer interposed between the wire elements and the bolt-head and provided with an aperture having two parallel edges which engage the two flat sides of the bolt head, and two inwardly extending bowed portions positioned between the spaced apart shank portions, whereby tightening the nut and clamping the wire elements will cause the inwardly extending bowed portions to be compressed.

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