US2633161A - Indenting tool - Google Patents

Description

March 31, 1953 w. o. SCHULTZ EI'AL 2,633,161

INDENTING TOOL Filed Nov. 12. 1948 2 Sl-lEETS-SI-IEET 1 F g. 1- rjy. 5

March 31, 1953 w. o. SCHULTZ ETAL 3,

INDENTING TOOL Filed Nov. 12. 1948 2 SHEETSSHEET 2 Fig. 4

SE2 ECT/I EZ V 7 0 P1955504! IN VEN TORS Patented Mar. 31, 1953 INDENTING TOOL 4 William 0. Schultz, South Milwaukee, and Roald H. Amundson, Milwaukee, Wis., assignors to McGraw Electric Company, a corporation of Delaware Application November 12, 1948, Serial No. 59,646

. 1 1 Claim.

This invention relates splicing electric cables.

It is the usual practice to pro'vide eonducting to an indenting' tool for sleevesior splicing electric cables and to lock" the cables in place by indenting the sleeves. 'It has been necessary in the prior type of indenting toolsto provide a separate die for-each size of wire. v

This invention is designed to' provide an indenting toolwhich is so made that the same die may be used for many difierent sizes of wires and in which an adjustment is provided for the male member of the indenting die to adjust for the different sizes of wire for which the device is designed.

Further objects are to provide an indenting tool which may be used with many difierent sizes of wires as hereinabove set forth, and which is of very simple construction and may be quickly and easily adjusted to the particular size of wire which is to be spliced, and in which provision is made for holding the adjustable portion in its adjusted position against inadvertent displacement.

An embodiment of the invention is shown in the accompanying drawings, in which:

Figure 1 is a front elevation of the device.

Figure 2 is a top plan View of the device.

Figure 3 is a fragmentary, sectional view through the lower portion of the device.

Figure 4 is a vertical, sectional view through the device.

Referring to the drawings, it will be seen that the device comprises a body portion or cylinder 3 which carries a threaded adapter 2 on which isscrewed jaw casting 3, which is provided with a, removable female die element 4 removably held in place by means of a set screw 5. The jaw casting or overhanging, inverted, U-sh-aped member 3 is provided with an aperture 6 within which is positioned a spring 1. The upper end of the aperture is closed by means of a screw plug 8.

The cylinder 1 is provided with a piston 9 which has an enlarged, lower portion and a slightly reduced, upper portion. The upper portion is provided with a threaded aperture ill within which is adjustably screwed the male element l l of the die. This male element is provided with a reduced, lower extension II which serves to center a spring l3. The lower end of the sprifig I3 is seated within an aperture I4 of smaller 2 her is adapted to be screwed down into the piston 9 when the device is employed to splice larger size wires by indenting the connecting sleeves. A hexagonal portion [5 is provided on the male member I I so that it may be readily adjusted by means of a wrench. The upper end of the male member is rounded as indicated at It.

A saddle plate or member I1 is carried by the upper end of the piston 9 and may be either rigidly or removably seated on a reduced upper portion of the piston 9. It is provided with a lip 13 against which the spring 7 bears. Preferably, a pin [9 is threaded into the lip 18 of the saddle member I! and serves as a centering means for r the spring I.

The female member 4 may be removed laterally of the jaw casting or overhanging member 3 when the set screw 5 is loosened. This female member is provided with inwardly projecting jaws 29 which converge towards the upper portion of the U-shaped opening 2| in the female member.

It is preferable to provide a set screw 22 in the jaw casting 3 so that it may be locked to the adapter 2 when it is properly adjusted and may be left in this locked position.

It is to be noted that the saddle member I! or stop member engages the surfaces or shoulders 23 and 24 of the jaw casting 3. These shoulders 23 and 24 serve as stops and the saddle member I! serves as a stop for the piston, so that when these stops or stop members are in engagement, the maximum upward travel of the piston 9 is obtained. It is apparent, therefore, that when the device is connected, for example by means of a pipe 25 to a source of fluid pressure such as a fluid pump so that fluid under pressure may be pumped below the piston 9, the portion [6 of the male element I I of the die will arrive at a predetermined position in the uppermost position of the cylinder 9 with reference to the female element 4 of the die. It is thus clear that for any given setting of the male member H, a predetermined degree of indenting is obtained for any selected wire size for which the adjustment has been made. It is to be noted that the male element i I of the die is provided with a series of graduations 26 and with corresponding insigne 21 indicating the wire size, for example in the position shown for the adjustment illustrated in Figure 4, the device is set for a No. 2 wire size. The operator is assured that all splicing for No. 2 wire, for instance, will be identically alike for the setting shown in Figure 4. All he has to do is to operate the fluid pressure pump until the saddle member I! engages the shoulders 23 and 24, at which time portion consisting of a. cylinder and an over the proper indentation for a No. 2' wire is obhanging member carried by said cylinder, a fetained for the adjustment illustrated. Obviously male element of an indenting die carried by for any other size, h male element II is a said overhanging member, a piston within said iu d to the app pr at or selected size The 5 cylinder, a male element of an 'mdenting die fluid fOOt D p other Source Of fluid pressure adjustably screw threaded into said piston, a is provided with a-re1ie f ,1 neans so thatthepres; saddlg mempen cailzried, by, aid pistqp. ,'i;idpende neaimn si n x. b inemqyee eiithif fi siid inns meaeeiiasaaafjaeeat said accordance with the usual practice. At the time male member, spring means urging said piston that the relief is open, the Spring 7 forces em. away from said overhanging member, said overpiston and its associated parts back to the no sihanging member having shoumered means w} in full lines In Figure upper ranged-"1&0 be engaged by said saddle member to mostposltwnforthe i ment iewp M e iimitfith "'utwandfmotion of said piston, and 4 is indicated in dot and ish i E means to cting fluid under pressure to It Will be seen that a verv simple is; fiidtigfi fiii denting tool has been shown which may be used w a WILLIAM O. SCHULTZ with the utmost facility for nlig n mam: ROALD H. AMUNDSON. ent sizes of wires Without requiring addy" ch';hire of dies. J REFERENCES CITED It W111 be seen further that the device is simple 20 The following references aae of $99M mhtg nd, awe rej il s rQsi eq andeasilxaqipsted mebfltmsfmtew h Dates Be be; 193a P --,-----1------ 1939; Amt lQQ g-.-- l lll 5i 1943;,

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