US1495493A - Solderless ground clamp - Google Patents

Description

May 27,1924. w 1,495,493

G. LIPSCHUTZ SOLDERLESS GROUND CLAMP Filed Jan. 11, 1923 [FIZZ/TOR Patented May 27, 1924.

U ITED STATES GEORGE LIPSCHUTZ, OF PHILADELPHIA, PENNSYLVANIA.

SOLDERLESS GROUND CLAMP.

Application filed January 11, 1923.

To all whom it may concern:

Be it known that I, Gnonon LrPsoHU'rz, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in a Solder less Ground Clamp, of which the following is a specification.

My invention relates to new and useful improvements in a solderless ground clamp, and has for its primary object to improve the construction of such devices in order that the ground wire may be securely fastened to the ground clamp without the use of solder.

Another object of the invention is to provide the flexible band with a nut housing which acts as a fulcrum means to cause a portion of the flexible band to be forced snugly into engagement with the conductor to which it is attached as the parts are tightened.

A further object of the invention is to provide a ground clamp consisting of a flexible band having a plurality of spaced holes whereby the band may be adjusted about conductor members of different sizes, said band having one end turned back upon itself, said turned back end having a nut recessed therein and provided with wire grooves whereby a round wire may be held between the body of the band on said turned back end.

lVith these ends in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains, may understand how to make and use the same, I will describe its construction in detail, referring by numerals to the accompanying drawing forming a part of this application, in which 2-- Fig. 1, is an edge view of my improved ground clamp showing it attached to a conductor here illustrated as a pipe.

Fig. 2, is a plan view thereof.

Fig. 3, is an enlarged sectional view of the ground clamp removed from the conductor and the bolt and nut removed from the ground clamp.

In carrying, out my invntion as here embodied, 2 represents a flexible band having- Serial No. 612,051.

a series of holes 3 in one end thereof while the other end is turned back upon itself to form the tail piece 4, said tail piece being so formed as to produce a nut housing 5 having a nut recess 6 in its outer face while in the inner face of said housing are formed the spaced parallel transverse wire grooves 7. Centrally of the nut recess or the nut housing is formed a hole 8 aligning with a hole 9 formed in that portion of the band body underlying the housing and these holes, are adapted to align with one of the series of holes 3 in the opposite end of the flexible band so as to receive a bolt or screw 10 having threaded connection with a nut 11 set within the nut recess of the nut housing, said nut being held against rotation by the side walls of said housing as will be obvious. A washer 12 is preferably interposed between the head of the screw or bolt and the flexible band which should be of such dimensions so as to force or pinch the flexible band snugly into engagement with theconductor member 13 such as a pipe, as plainly shown in Figs. 1 and 3.

Prior to tightening the ground clamp upon the conductor the ground wire 14 isbent into a U shape as shown in Fig. 2, and inserted between the tail piece 4 and the body of the flexible band underlying it with the strands of the ground wire lying in the grooves 7. As the screw is then threaded into the nut the nut housing will be drawn toward that portion of the body of the flexible band underlying said housing to firmly clamp the ground wire in place and at the same time will draw the 'two ends of the flexible band toward each other for clamping it about the conductor member and as this is being done the nut housing will fulcrum upon the flexible band so as to pinch it snugly into engagement with the conductor member.

From the foregoing description it will be seen that I have provided an exceedingly simple and effective ground clamp which will be strong and durable and when in use the ground wire may be fixed thereto without the use of solder thereby eliminating one of the most objectionable operations necessary when installing the ordinary ground clamp.

Of course I do not wish to be limited to the exact details of construction as herein shown as these may be varied within the lit limits of the appended claims Without departing from the spirit of my invention.

Havm thus fully described my invention, what it c aim as new and useful is 2- l. Aground clamp consisting of a flexible band adapted to be passed around a suitable conductor and provided with a series of holes at one end, an integral tail piece overlying the body of the band at the other end, said tail piece'having a nut recess in its outer face and a pair of spaced parallel transverse wire grooves in its inner face, and means engaging the nut to draw the ends of the flexible band about a conductor and clamp a ground Wire between the tail piece and that portion which it overlies.

2, As an article 0t manufacture, a ground nceenee clamp consisting oi? e ifilexihle hand having a series of holes at one end and having the opposite end turned haclr upon itself to provi e spaces in which the strands of be ground Wire may be inserted, said turned loaclr portion having a pair of transverse grooves to register with the strands of the ground wire for positioning the same, and means to draw the ends of the band together about a conductor at the same time drawing the turned back portion toward the underlying hody portion of the hand for clamping a ground wire therehetvveen.

In testimony whereof l have hereunto atfixed my signature.

GEURGE LllP-SKCHUTZ,

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