US1819500A - Insulator clevis - Google Patents

Description

"UNETLEI s'r Patented Aug. 18, 1931 MILTON W. COOKE. OF PITTSBURGH, PENNSYLVANIA INSULATOR CLEVIS I Application fllediDecember s, 1927. aw no. 238,695.

This invention relates toinsulator clevises and more particularly to a clevis'for use with I strain-insulators. 1 v h Such insulator clevises as have heretofore beenprovided are rather complicated and costly and it is an object of this invention to provide an improved clevis that shall be simple in construction, inexpensive to manu I facture and practical in operation.

1 Another object of this invention is to provide an insulator clevis comprising a unitary member that shall be formed by a single stamping.

v V, A further object of this invention is to provide an insulator clevis having the above characteristics, that shall be adapted for use in anchoring the dead end of a wire, or allowing it to be bent and extended to some other point.

' Other objects are attained by means of the device hereinafter described and illustrated in the accompanying drawings,cwherein,

Figure 1 is a perspectiveview of an insulator clevis embodying the invention showing one manner in which it may be applied.

in service, g V

Fig. 21s a top plan vlew of an insulator clevls embodying the lnvention,

; Fig. 3 is a side elevational viewof Figure '2, and g I Flg. 4 is an elevational view of a clamping bolt and nut employed'with the invention.

In the drawings, 11 is a clevis formed from a rectangular member of any suitable material such as metal strap having a main body portion 12, a U shaped left end 13 and a flanged right end 14. The U shaped end 13 is formed by slitting the rectangular memher along the longitudinal'center line of its left end and the portions 15 and 16 are pressed upward, substantially at right angles to their former positions, as shown, forming the legs of the U, which are adapted to receive an insulator. The legs 15 and 16 of the U are provided with openings 17 for receiving a suitable bolt 18 for connecting the clevis to the insulator 19, (see Fig. 1). The openings 17 are drilled in alignment or punched through the legs 15 and 16 so that they will cooperate to receive the bolt 18.

The right end 14 of the clevis '11 is formed by pressing the sides adjacent the end of the rectangular member upward and forming flanges 21 and 22' substantially as shown. The right end of the clevis which includes flanges 21 and 22, terminates in an outwardly extending flange portion 23 which extends around the entire surface of the right end of the clevis. The upturned flanges 21 and 22 form an entrance 24 for receiving the wire or cable to be anchored.

The main body portion 12 is provided with a struck-up portion 20 having its outer sides concaved, as shown at 25, for cooperating with the contour of a wire or cable 26, (see Fig. 1). An oblong opening 27 is provided at the'rightend of the clevis for receiving a suitable clamping. device 28, the inclined and rather oblong opening 27 maybe formed by punching upward and outward through the main body portion 12.

Any suitable clamping device may be. employed for clamping the cable 26 in fixed relation to the clevis 11 and the: clamping device illustrated herein'compri ses a bolt 29 having a head portion 30, a shank portion 31 adjacent the head portion, and a threaded portion 32 which is adapted to engage and cooperate with the threaded nut 33. A square. washer 34fis providedforthe-bolt and is substantially of the same dimensions as the inner di-' mensions between the flanges 21 and 22. "The shank portion 31 ofthe bolt issubstantially the same dimensions astheopening 27,,which is adapted to. receive the shank portion and prevent" the bolt from turning. p I

' The practice of this invention" is clearly illustrated by Figure 1, which shows the clevis 11 connected to an insulator 19 and a cable or wire 26, disposed in the entrance 90 24, formed by the flanges 21 and 22, and an chored aroundthe struck-up portion 20, the clamping device 28 being positioned in the opening 27 "'andthe cooperating washer 34 and nut 33 inclamping position.

V The clevis 11 may be employed to anchor the dead end-of a cable 26, as illustrated by the solid lines in Fig. 1, orallow it'to bend, and extend to some other point, asshown by the dotted lines in Fig. 1. The inner edges 85 of the right end of the clevis are rounded so as to prevent any sharp breaks in the cale 26 and to permit the cable to be bent in any desired direction about the right end of the clevis, and to be subject to tensional strain without injury to the cable.

An important advantage of this invention is that the clevis 11 is formed from a rectangular member by a single stamping and obviously the invention is especially simple, inexpensive to manufacture and will be efli- 'cient and very desirable where such a device is desired.

lVhile I have illustrated and described but one embodiment of this invention, it will be apparent to those skilled in the art that certain changes, modifications, substitutions, additions and omissions may be made in the arrangement 01 the unitary clevis without departing from the spirit and scope of the appended claims.

vl' hat I claim and desire to secure Letters Patent on, is:

1. An insulator clevis comprising a unitary member having one of its ends U shaped for receiving an insulator, its other end flanged to form a cable entrance, the said flanged end terminating in an outwardly extending flange and a struck-up portion for engaging the contour of the cable substantially as described.

2. An insulator clevis having an insulator supporting end and a cable receiving end provided with oppositely disposed upwardly extending flanges formed on the body of the clevis and a clamp located between said flanges for clamping an associated cable to said body portion, said flanges extending upward a substantial distance so that said cable will be wholly within the height of said flanges and said clamp can be locked therebetween.

3. An insulator clevis having an insulator supporting end and a cable receiving end provided with oppositely disposed upwardly extending flanges formed on the body of the clevis, a lug around which an associated cable may be looped and a clamp located between said flanges for clamping a. cable looped around said lug to said body, said flanges extending upwardly a substantial distance so that they extend above said cable and cooperate with said clamp.

4. An insulator clevis having an insulator supporting end and a cable receiving end having parallel flanges formed on the opposite edges thereof, a clamping nut and bolt associated with said clevis between said flanges and a rectangular washer extending substantially across the space between said flanges for clamping an associated cable to said body, said flanges extending upward a substantial distance so that the sides of the cable will be entirely therein and so that the washer will cooperate with the flanges.

5. An insulator clevis comprising a unitary member having one of its ends U-shaped for receiving an insulator, its other end flanged and forming a cable entrance, said flanges extending upward a substantial distance, said flanged end of the clevis having a slot between the flanged portions thereof, a cable securing means positioned in said slot, the clamping portion of said cable securing means having a rectangular form cooperating with the flanges of said flanged end, so that the clamping portion can be pressed downward upon a cable disposed between the upwardly ex tending flanges.

6. An insulator clevis comprising a unitary member having one of its ends U-shaped and provided with extending legs of flat outline, the other end of said clevis being provided with cable securing means, said means including a struck-up portion inclining downwardly toward the latter end, the highest portion of said strucleup portion having an outline conforming with a cable to be looped thereover, a bolt, a square nut and washer cooperating with this end of said clevis between the struclnup portions for clamping the ends of a cable looped over the struck-up portion.

7. An insulator clevis including a unitary member having one of its ends U-shaped for receiving an insulator, its other end having a restricted cross section and having upwardly extending langes positioned adjacent this restricted portion thereof, a struck-up portion for receiving a loop of wire, a bolt square washer and nut clamping means positioned in said clevis between the flanged portions thereof for clamping the extending ends of the looped wire between the flanged portions, said flangd portions having a substantial height so that the cable will be entirely therein and that the square washer and nut of the securing means will cooperate therewith to clamp the cable thereto.

In testimony whereof, I have hereunto subscribed my name this 16th day of November, 1927.

MILTON W. COOKE.

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