US2612540A - Insulator secured under tension to an insulator rack - Google Patents

Description

Sept. 30, 1952 F. G. RIDGERS ET AL 2,612,540

INSULATOR SECURED UNDER TENSION TO AN INSULATOR RACK Filed July 18, 1950 Patented Sept. 30, 1952 INSULATOR, SECURED UNDER TENSION T i .ANJNSULATQRBACK Frederick G'. Ri ers and Charlie W. oass'isQ Canada, assignors to N.

' i Hamilton, Ontario,

1 Slater Company Lim Canada ited, Hamilton, -0'ntal'ilo,

Application July is, 1950; Serial No. 174,43?

1 Claim. 1

This invention relates to a wire holder.

The objects of the invention, generally, are to improve on known wire holders, particularly of the type wherein the insulator is attached to a backing member or supportby a, U-shaped clamping member which has hooked, inturned or clinched end portions. a

A specific object of the invention is to provide a wire holder of the type hereinbefore referred to, wherein the insulator is easily attached to the support, and once so attached, remains firmly held against and to the support Without loosening or rattling, irrespective of the load or thrust imposed upon the insulator.

Another specific object is to provide a wire holder of the type hereinbefore referred to wherein the member fastening th insulator to the support is under tension once the insulator has been attached to the support,

Still another specific object of the invention is to provide a wire holder of the type herein- The web H! of the support H is formed with an elongated longitudinal slot 13, and with circular apertures I4, one on each side of, and spaced from the adjacent end, of the slot l3. The web I9, between the apertures 14 and the opposite ends of the slot [3, is formed with pressed transverse ribs IS, the ribs extending appreciably beyond the longitudinal edges defining the slot. As best seen in Figure 5, the ribs l5 are formed by pressing or deforming the web downwardly, that is, toward the lower edges of the flanges 18 of the support I l.

The insulator Ill, as will be easily seen by reference to the drawings, is substantially a convenbefore referred to, wherein the base of the insulator engages the support alon parallel relatively narrow portions spaced on either side of the plane of the clamp.

In the drawings, wherein like numerals of reference indicate corresponding parts in the various figures,

Figure 1 is a front elevation of a wire holder made in accordance with the invention;

Figure 2 is a top plan view of Figure 1;

Figure 3 is an end view of Figure 1, as seen left to right in Figure 1;

Figure 4 is a top plan view of the insulator support;

Figure 5 is a section on line 55 in Figure 4;

Figure 6 is a section on line 6-6 in Figure 2; and,

Figure '7 is a fragmentary section on line 1--'l in Figure 2.

Referring now by numerals to the drawings, the backing member or support is shown as H, and the insulator as 10. The insulator is attached to the support by a substantially U- shaped member or clamp I2. The support I I of from i metal, is of channe1 cross-section, and its length is chosen so as to mount the selected number of insulators (on only is shown). The support is suitably attached to a supporting surface (not shown).

ti'onal one, that is, one in current and wide use. For instance, as seen on two opposite faces (see Figure 1) it presents two spaced parallel portions 20 rising from a base 2|, and a transverse, spoollike member 22 spaced from the base and formed to provide a circular opening 23 through which the wire to be attached is passed. As seen on the other two opposite faces (see Figure 3), it presents an inverted U defined by two parallel portions 24 and a transverse circular spool-like portion 25, spaced from the rounded base of the, U

to provide an opening 26. The upper periphery of the spool-like portion 25 is engaged by the fastening member 12 aforesaid. The insulator so far described is conventional In a device according to the invention, however, the lower face of the base is formed with a recess 28 extending lengthwise of the base, that is, lengthwise of the slot i3 of the support II, as best seen in Figures 3 and 6.

Such recess reduces the effective bearing surface of the lower face of the base, to two spaced, elongated, relatively narrow areas or portions 29, one on either side of the longitudinal axis of the recess I3. Such recessalso provides a space or clearance which permits of the deflection up wardly of the web toward the base, as best seen in Figures 3 and 6.

The U-shaped clamp or fastening member I2 is passedthrough the aperture 26 of the insulator to engage the spool-likeportion 22, its lower ends passed through the apertures M of the supporting member II, and the ends turned or clinched partly around the ribs or anchor portions l5 as at [6, in a manner to cause the insulator tightly to engage the support while deflecting the web upwardly into the recess 28. Conveniently, the

extreme ends of the clamp are received into the slot [3, all as best seen in Figure 7. Thus, both the clamp and the web will be under tension, tightly holding the insulator in position.

As the insulator bears upon the support along spaced elongated and relatively narrow areas or portions, one on either side of the plane of the clamping member (or longitudinal axis of the slot [3), the insulator will be firmly held against the support, as already stated, and the insulator will not become loosened and will not rattle.

through said insulator and having its ends passing through said circular apertures in said channelled support and clinched up through said central oval shaped aperture under such tension that said channelled support is resiliently forced upwardly into said central recess.

FREDERICK G. RIDGERS.

CHARLIE W. CASSELS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number I Name Date 928,709 Steinberger July 20, 1909 1,225,460 McCarthy May 8, 1917 1,832,138 Pounder Nov. 17, 1931 FOREIGN PATENTS Number Country Date 90,569 Switzerland Nov. 24, 1920

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