US2347956A - Cable sheath cutting and stripping tool - Google Patents

Description

y 1944- E. P. LANSING 2,347,956

v CABLE SHEATH CUTTING AND STRIPPING TOOL Filed Fb. 6, 1943 2/ EdrZPZa/nainy INVENTOR av %;@2m'%.

ATTORNEYS Patented May 2, 1944 UNITED PATENT FFICE CA'BLE SHEATH CUTTING'AND STRIPPING Earl P. Lansing, New Orleans, La.

Application February 6, 1943, Serial No. 475,057

4 Claims.

trical cables of any kind, in that it includes knife members for severingwhe sheathing circumferentiallyabout the cable, as well as longitudinally thereof, so that the sheathing between the circumferential or transverse cuts can be readily removed.

A further object is to provide a sheath stripping tool that includes adjustable knife members, so that the tool is capable of performing its intended function on cables of various diameters.

Another object is to provide a tool of the character set forth, that is simple in construction, inexpensive to manufacture and extreme y emcient in operation, use and service.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying. drawing and specifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a side elevation of my tool, with parts broken away and in section and illustrates the tool applied to two cables of difierent diameters.

Figure 2 is a top plan view of the tool in use.

Figure 3 is a sectional view taken approximately on line 3-3 of Figure 2, looking in the direction of the arrows.

Figure 4 is a sectional view taken approximately on line 4-4 of Figure 2, looking in the direction of the arrows.

Figure 5 is a perspective view of the knife member for cutting the sheathing circumferentially or radially of the cable.

Figure 6 is a detail view illustrating the lateral curvature of the blades of the tool Referring to the drawing in detail, it will be noted that my tool includes-a pair of elongated duced end portions 3 and 4 are preferably fiat as shown, for disposal in engagement .with each other, and the reduced end portions 4 provide handles for the device, to bring about said movement. The side and outer faces of the end portions or handles 4 are preferably rounded to pro vide a convenient gripping surface, as will be apparent.

The enlarged central portions 8 and 9 are each provided with a pair of arcuate recesses in the confronting faces thereof, and the recesses of the member I are indicated by the reference numerals l0 and H, while the recesses of the member 2 are indicated by the numerals l2 and i3, and the recesses are arranged along the length of said members for the recess ill to register with the' recess I 2 and the recess H with therecess I3.

, best shown in Figure 1.

companion members I and 2 that have reduced end portions 3 and 4. The portion 3 of the mem-- ber l terminates at its outer end into spaced apertured ears 5, while the portion 3 of the other member is formed centrally at its outer end, with an ear 6 disposed between the ears 5 and pivotally, connected thereto by a pin 1 for swinging movement of the members toward and away from each other, as will be apparent upon inspection of Figure 1. The confronting faces of the re- The recesses provide what may be termed jaws, but in any event they are for the purpose of receiving the cables therein, as best shown in Figure 1, and the enlarged central portion 8 in the form shown, is provided with three square cornered bores, indicated respectively by the and the latter bores are disposed at an angle to each other, or in other words in converging relation from their outer to their inner ends, as

The portion 9 is likewise provided with a square cornered bore I1 extending from its outer face and opening into the recess l3, midway its ends.

Fitting and mounted for slidable adjustment in the bore I 4 is the shank l8 of a knife member that includes a blade l9 which is beveled to a convexed cutting edge 20 directed toward the handles and to a concaved cutting edge 20' opposing the edge 20, as clearly shown in Figures 1 and 5. However, the edge opposing the convexed cutting edge 20 may be straight instead of concaved. In any event the blade extends into the recess 10- for cutting the sheathing circumferentially or radially of the cable, upon rotation of;

the tool in either a clockwise or counterclockwise direction, it depending upon the type of cable upon which the tool is to be used. The

blade I9 is preferably also curved laterally, as best shown in Figure 3, so that the. cut through the'sheathing will be made at an inclined angle tending into the recess l3, for cooperationwith the blades 22 for cutting or slitting the sheathing longitudinally, when the tool is drawn along the length of the cable, as will be apparent upon inspection oi Figure 4. The blades 22 and 24 are each likewise beveled to provide a convexed cutting edge and a concaved cutting edge opposite to the convexed edge, and these blades may also be curved laterally, as shown at 22' and 24 of Figure 6, to undercut the sheathing.

The knife members are held in adjusted positions by set screws 25 that are threaded through one of the sides of the members I and 2 for engagement with the shanks, with the result it will be seen that-the knife members can be adjusted 1 to bring about cutting of the sheathing at any desired depth on cables of various diameters.

In order to center small cables relative to the recess I 3, to bring about straight longitudinal slits in the sheathing thereof, I provide a pair of beaded studs 26 that are mounted for slidable movement in bores 21 disposed upon opposite sides of the bore I1, and which have enlarged outer end portions providing shoulders for receiving the heads 28 to limit inward movement of the studs. Thestuds are held in their innermost position for receiving the cable between the same, as indicated in dotted lines in Figure l, by leaf springs 29 that have one of their ends fixed to the outer face of the member-2 and their opposite end portions are bent at an angle to the remaining portions, with the bent portions 30 extending into the bores 21 and engaged with the heads. By that construction, it will be seen that a cable of a diameter that will fit between the studs 26 will be held thereby centrally of the recess I3 for the purpose set forth, but cables of a larger diameter will engage the inner ends of the studs and move .the same outwardly against the action of the springs 29, for the blade 24 to penetrate the sheathing thereof, as will be apparent.

From the above description and disclosure in the drawing, it is believed that the use of my tool will be obvious, but it might bementioned that when it is desired to remove the sheeting from a portion of a cable, such as indicated by one of their ends, handles provided by the opposite end portions of said members, said members having recessed flat confronting. faces for disposal in engagement with each other and the recesses providing cable receiving jaws, cutting means adjustably mounted'relative. to the jaws for severing the cable sheathing, means for securing the cutting means in adjusted positions, and means for centering a cable relative to one of the recesses.

2. In a tool for use in cutting and stripping sheathing from electric cables, a pair of elongated companion members pivoted together at one of their ends, handles provided by the opposite end portions of said members, said members having recessed fiat confronting faces for disposal in engagement with each other and the recesses providing cable receiving jaws, cuttingsheathing from electric cables, a pair of elongated companion members pivoted together at one of their ends, handles provided at the opposite end portions of said members, said members having recessed fiat confronting faces for disposal in engagement with each other, the re- "cesses being of arcuat formation and disposed the letter A, the tool is applied to the cable for disposal of the latter into the recess i2. The members i and 2 are then moved toward each other for the blade l9 to penetrate the sheathing,

and at the same time the tool is rotated about the cable to complete one radial cut. The second radial cut is made in the same manner. The tool is then shifted for disposal of the cable in the recess it, for the blades 22 and 24 to cut or slit the sheathing longitudinally between the radial cuts. The cut layer or layers of sheathing can then be readily removed in three strips when out by the tool shown, due to the fact that it includes three longitudinal cutting blades 22 and 25, but a tool including any number of longitudinal cutting blades may be provided, and in the event the tool includes only two of such blades. they will be disposed diametrically opposite each other.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What I claim is:

' 1. In a tool for use in cutting and stripping sheathing from electric cables, a pair of elongated companion members pivoted together at in registration with each other to provide cable receiving jaws, one of said members having a squ'arecornered bore opening into its recess, a knife member including a shank fitting and mounted for slidable adjustment in said bore, a blade formed on the shank and extending into the last mentioned recess, said blade having opposed cutting edges, one edge being convexed and registration with each other to provide cable recei ng jaws, one of said members having a pair I of s uare cornered bores extending from the outer face thereof in converging relation and opening into its recess, the other member having a square cornered bore extending from the outer face thereof and opening into its recess, knife members including shanks fitting and mounted for slidable movement in the bores, blades formed on the shanks and extending into the recesses, the blades each having opposed cutting edges, means for securing the knife members in adjusted positions and engageable with th" shanks thereof, and spring pressed parallel arranged headed studs slidably mounted through the last mentioned member for disposal in the recess thereof and said studs adapted to receive a cable between the same to center the cable relative to the recesses.'

' EARL P. LANSING.

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