US1977402A

US1977402A - Detachable clamp

Info

Publication number: US1977402A
Application number: US645967A
Authority: US
Inventors: Arthur R Peglar
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-12-06
Filing date: 1932-12-06
Publication date: 1934-10-16
Anticipated expiration: 1951-10-16

Description

Oct. 16, 1934; A R. PEGLAR 1,977,402

DETACHABLE CLAMP Filed Dec. 6, 1952 AR-Zeylar Patented Oct. 16, 1934 UNITED STATES PATENT -oFFie'iE 7 1,977,402 7 DETACHABLE CLAMP Arthur R. Peglar, Columbus, Ohio Application December 6,1932, 'Serial No. 645,967

2 Claims.

" post Without the need of employing threaded fastening devices such as now commonly used which are objectionable for various reasons well known to the industry.

Another object of the invention lies in the 15 provision of a clamp of this character which is simple and durable in construction, easy. to operate and one which corrosion will have little or no efiect to prevent its positive operation in placing or removing the same from the terminal post of the battery.

1 For a further understanding of the invention,

reference is to be had to the following description taken in connection with the accompanying drawing, wherein:

Fig. 1 is a perspective view showing the connector in place upon a battery terminal post;

Fig. 2 is a vertical sectional view taken therethrough;

Fig. 3 is a side elevation of the connector;

Fig. 4 is a top plan view thereof;

Fig. 5 is a perspective view of a clamping member having means for the attachment of a fiat electrical conductor thereto.

Referring more particularly to the drawing, the

numeral 1 designates the improved connector or clamp in its entirety. The connector includes a pair of separable

arcuate clamping members

2 and 3 spaced from one another and fitted around a terminal post 4 of a battery 5. Formed with the member 3 is an extension 6 having a 0 socket 7 for the reception of one end of a cable 8 through which electrical current is led from the battery to its point of use.

Arranged around the

members

2 and 3 is an annulus or cam ring 9 which is of a height considerably less than that of the

members

2 and 3 and has its outer periphery 'shapedhexagonally to accommodate a wrench or suitable tool,

(not shown) for effecting the rotation of the annulus. The inner Wall 10 of the annulus or ring 9 is preferably tapered'or diverging down- Wardly to conform with the similarly tapered outer Walls of the members .Z-and 3 for the pu pose of coacting with said members to cause the same togrip the battery terminal. Formed with the upper edge surface of the annulusQ is a pair of cams 11 which are adaptedtolunderlie and engage a pair of cam-like projections 12 extending laterally from the upper outer edges of the

members

2 and 3.

It will be seen that as the annulus 9 is ro- 0 tated in a clockwise direction, the cams 11 of the annulus will be forced or wedged under the projections 12 of the

members

2 and 3 and thereby cause the annulus 9 to be moved in a downward direction upon the tapered outer sur- 175 faces of the clamping members with the result that said members will be drawn tightly around the battery terminal and thus form a secure electrical contact therewith. Due to the comparatively large surface engagement between the 0 cams 11 and the projections 12 together with the tapered contact surfaces between the annulus and the clamping members, the annulus 9 will be frictionally held and locked in its tightened or adjusted position without the tendency of 55 becoming accidentally loosened due to jars or vibrations which may be present when the battery is used in connection with a motor vehicle.

It will be obvious that upon the rotation of the annulus in a reverse or anti-clockwise direc- 0 tion, the same will lose its tightened grip upon the clamping members and the clamp may thus be readily removed from its engagement with its associated battery terminal.

From the foregoing, it will be seen that a clamp has been provided which is extremely simple in its construction, involving only three interlocking parts of which only one thereof is movable and operating to secure the clamp in place. The construction of the clamp is 100 therefore particularly suitable and practical as means for attaching electric conductors or cables to automobile storage batteries in that attachment and detachment thereof may be made quickly and easily without the necessity of utilizing threaded fastening elements such as bolts or the like which are tedious, cumbersome and oftentimes requiring special tools for effecting their removal. The clamp, due to its separable clamping sections, together with no the large engaging contact between the cooperating cam faces, will fit various sized terminals thereby eliminating the necessity of forming a special clamp for each size terminal used.

When the clamp is to be used for attaching. a flat electrical conductor 13 as shown in Fig. 5, only one of the clamping members need to be exchanged as the clamping member, with the exception of the special conductor attachment, is similar in shape to that of the clamp shown wherein the usual round electrical conductor or cable is used.

Although the clamp has been shown in connection with a battery terminal post, it will be understood that the same may be used in other fields of employment such as clamping collars or hubs to shafts or for clamping other devices or parts to associated machinery and I therefore do not desire to limit myself to the single use illustrated but reserve the right to use the construction wherever found desirable. It will also be understood that slight changes may be made in the shape and construction of the clamp without departing from the spirit and scope of the invention as set forth in the appended claims.

What is claimed is:

1. A battery terminal clamp comprising a pair of arcuate clamping members adapted to be fitted over the battery terminal, said members having their outer faces tapered and provided of separable members adapted to be fitted over the battery terminal and of which one of said members is formed with a cable socket therewith, the outer side faces of said members being tapered downwardly and outwardly over their full height, cam shaped projections formed with the upper ends of said members, and a movable ring around said members having cam shaped surfaces formed with its upper side which are adapted for engagement with the cam faced projections of said members, whereby upon rotation of said ring relative to said members, the

opposing cam faces will effect the downward 1 movement of said ring upon the tapered outer faces of said members, thereby forcing said clamping members into firm engagement with the terminal of the battery.

ARTHUR R. PEGLAR.