US2300087A - Electric marine cable stripper - Google Patents

Description

Oct. 27, 1942. LL 2,300,087

ELECTRIC MARINE CABLE STRIPPER Filed 061,. 4, 1941 drawing, it being under Patented Oct. 27, 1942 T OFFICE nmc'rarc Mama cams: s'ralrraa Tony P. vAnello, Tampa, Fla. Application October 4, 1941, Serial No. 413,687

sheath may be eilected easily and with a minimum expenditure of effort.

Another object of the invention is to provide a plier type insulation or sheath cutting and stripping tool having a cutting knife and a novel means associated therewith for maintaining the knife centered on the cable while the tool is in use.

Another object of the invention is to provide a plier type insulation stripping tool which is designed to hold an insulated cable and to cut the insulation around the same and also to hold the cable in a centered position with respect to a pointed knife to facilitate drawing the knife lengthwise of the cable so that the insulation can be out along a straight line and at a desired depth which will avoid damaging inner insulation coverings oi-the cable wires.

A further object of the invention is to provide a tool of the character stated which, when the two relatively movably parts are adjusted to the diameter of the cable, will be locked so as to maintain the cutting tool against reverse movernent;

Another object of the invention is to provide a tool of the character stated which is designed to provide a pair of gripping Jaws by means of which an edge of the covering sheath to be removed from the cable, can be conveniently grasped to be stripped oi! oi the cable.

The invention will be best understood from a comideration of the following detailed descriptiontaken in connection with the accompanying however, that the invention is not to be considered as limitedby the specific illustration or description but that such illustration and description constitute a preferred embodiment of the invention.

In the drawingperspective of the'plier type stripping tool of the character em o ying the present invention.

la. 2 is a sectional view taken longitudinally 55 movable or shiftable "I and the other by the the length of the tending stud II which is 5 Claims. (CI. 3H1) oi the longitudinally slotted arm in a plane exending axially of and passing through the guiding rollers, parts of the roller supporting shaft being in elevation.

Fig. 3 is a view partly in section and partly in elevation of the movable law securing pawl, the section being taken substantiallyon the line 3-3 of Fig. 4.

Fig. 4 is a sectional view taken substantiallyv on the line 4-4 of Fig. 3.

Referring now more particularly to the drawing it will be seen handles, one of which is indicated by the numeral numeral 2. The handle, I at its free or rear end is turned to formtlie, loop I and a similar loop, indicated by the numeral 4, is formed at the rear end of the'handle 2. These loops form a stop means against which the hand can bear when pulling on the tool to prevent the hand from slipping oi! oi the handies.

The top handle, which will be referred to as the fixed handle, merges at its forward end in the slightly obliquely directed shank I which extends upwardly or away from the top of the handle. At its forward end this shank merges into a relatively long arm portion I which is disposed substantially at right angles to the length of the shank and is directed downwardly or away from' the under side of the handle and shank. This arm terminates in the forwardly and upwardly curving jaw 1 which has a relatively sharp gripp ns edge I.

The arm 6 is relatively wide in the direction of handle of the tool as shown and it has formed therethrough the relatively long slot I. The back edge of the arm is also provided with a number of ratchet teeth l0 through a len.gth substantially equaling the length of the slot Upon that side of the arm 6 which would be to the right of the user of the too! there is formed at the end of the arm or adjacent the beginning or the curvature of theiaw l, the laterally exformed integral with the axle shaft II. This axle I! has rotatably mounted thereon the centrally constricted double cone roller is which is secured in place in a suitable manner as, for example, by the use of a washer I4 mounted upon a reduced stud at the outer end of the axle I! as indicated at I I, and maintained in position by sw ging the end of the stud in the manner shown.

The handle I, which will be referred to as the handle, is integrally formed that the present tool has two 2 with a shank portion it which extends slightly obliquely therefrom away from the top side of the handle, similarly to the shank 5. This shank at its forward end is integral. with a relatively wide plate H which is drawn off at its forward end to provide the movable jaw 58 which terminates in a sharp gripping edge l9 which is in opposed relation with the edge 8 of the fixed jaw 1,

As is clearly shown these jaws also have curved opposed inner surfaces and between these curved surfaces the body of a cable is received when cutting around the cable through the insulation, in the manner hereinafter stated.

The plate l1 lies against and extends across the right hand side of the arm 6 and it has an aperture formed therethrough which alines with the slot 9 of the arm.

For the purpose of adjustably maintaining the moveable jaw in position against the side of the arm 6, there is provided a sliding yoke plate 2i which positions against the side of the arm opposite from the plate l1 and which has at opposite edges the guide flanges 22 and 23 which engage across the two edges of the arm, the flange 23 being disposed across the ratchet teeth 10.

The yoke plate 2| has an aperture 24 in which is fitted the reduced portion 25 of a head 26 which forms an integral portion of one end of the stud 21 which extends the arm and alines with the aperture 20 in the plate 11.

Positioned co-axially with the stud 21'is a shaft 28 which is secured in a suitable manner to the end of the stud 21 so as to extend to the right from the plate l1 as shown in Figures 1 and 2. Any suitable means may be employed for securing the stud 21 and the shaft 28 in axial alinement but there is here shown a screw 29 forming an integral axial extension of the stud 21, which threads into a suitably formed bore in the adjacent end of the shaft 28.

The shaft 28 has a collar 30 formed thereabout to maintain in position thereon a centrally constricted roller, indicated generally by the numeral 3|, which comprises two cone portions 32 mounted upon the shaft 28 with the smaller or apical ends in opposed relation.

The shaft 28 is provided, at a point to lie midway between the opposed ends of the cones 32,

with a transverse passage 33 designed to receive a pointed knife 34, the point of which is directed toward the longitudinal center and the narrowest portion of the roller l3.

' The outer end of the shaft 28 is provided with a suitable threaded bore to receive a binding screw 35, the inner end of which engages the knife 33 and secures it firmly in position. This screw also functions to hold in position a retaining washer 36 which keeps the outer cone 32 in position. The inner cone 32 is maintained in place by engagement against the collar 30 of the shaft 28.

In order to hold the movable plate l1 in position the yoke 2| has formed integrally with the flange 23, the guide post 31 through which is formed a bore or passage 38. Within this bore 38 there is slidably positioned a pawl 39 which has a stem 40 which extends outwardly away from the ratchet piece II! which the pawl en gages. Threaded in the outer end of the bore 38 is a retaining screw 4| through which the stem 40 passes and this screw maintains in position within the bore, the spring 42 which constantly urges the pawl toward the rack.

through the slot 9 of Upon the outer end of the post 31 there is formed a key 53 and this engages in a suitable notch in the flange lGItlOn M of a knurled head 35 in which the outer end of the stem 40 is seecured. It will thus be seen that spring 42, in urging the pawl 33 inwardly, draws the head againstthe outer end of the post so as to maintain the key in looking connection with the head and thus prevent the pawl from turning out of its operative position. It will of course be understood that the pawl is so positioned that it will slide over the ratchet piece I9 when the movable handle 2 and the plate l1 are forced toward the fixed jaw 1 but will engage a tooth of the rack and hold the plate H from outward movement away from the fixed jaw when the handles are grasped and the movable jaw is oscillated.

The movable jaw I8 is provided with a slot 46 which opens through the curved inner side or inner face of the jaw. This slot receives a knife 41 which has its cutting point 48 projecting beyond the curved inner face of the jaw toward the opposite or fixed jaw. This knife is maintained in fixed position. by the set screw 49 which is threaded into a suitable opening in the movable jaw for contact with the side of the knife.

The present tool may be conveniently used for cutting the outer covering or sheath from electric marine cable of the basket weave type having a lead armor. In the use of the tool the first step is to release the pawl 39 by pulling it outwardly by means of the head 45 so as to allow the movable jaw to slip back or away from the fixed jaw, if necessary, to permit the cable to be introduced between the jaws. The pawl may then be reengaged with the teeth of the rack so that when the jaws are forced together they will be held in the position to which they are moved and in so forcing the jaws together the point of the cutting knife 41 will be forced into the cable cov-' ering. The tool is then turned around the cable while pressing the cutting blade in lightly so as to cut a ring around the cable through the cable shield.

After the circular out has been made through the woven shield the cable is removed from between the jaws and is located between the rollers I3 and 3| and the jaws again moved toward one another until the point of the knife 34 engages the shield whereupon by grasping the handles of the tool the latter may be drawn lengthwise of the cable to cut the shield from the circular'cut to the end of the cable. The points 8 and 19 of the jaws may then be used to grip the shield so as to strip it from the cable.

In removing the lead sheath from the cable it will be understood that the same procedure is followed as above described, it being understood, of course, that the knives will be adjusted so as to avoid cutting too deep into the lead sheath and damaging the wires of the cable.

In the foregoing it will be readily understood that the device herein described provides a handy and efficient tool for removing the woven shield and the lead sheath from marine electric cables without danger of damaging the cable wires.

What is claimed is:

1. A tool of the character stated comprising a pair of pivotally coupled jaw members, means facilitating the movement of one of said jaw members along a straight path relative to the other jaw member, an operating handle connected with each jaw member, means for locking said jaw members against separatory movement after the said one of the jaws has been moved aterally extending shaft carried by each jaw member, said shafts having spaced parallel relation, a roller supported upon each shaft, and a knife disposed adjacent th transverse center of one roller and directed toward the other roller.

2. A tool as set forth in claim 1 in which said rollers are in the form of double cones having the apical ends opposed and the said knife is located at the transverse center of one roller.

3. A tool of the character stated comprising a handle having an angularly extending arm at one end, said arm terminating in a reversely bent portion forming a fixed jaw, said arm having a longitudinally extending slot therethrough, a series of rack teeth carried by the arm in a line extending lengthwise thereof, a second handle, a plate forming an integral continuation of one end of the handle and disposed adjacent one side of the arm across said slot, said plate being extended to form a jaw, said jaws having curved opposed faces, a pivot stud secured to said plate and extending through the arm slot to provide a. sliding and pivotal connection with the arm, a spring pressed jawl carried by said plate for sliding engagement with the rack teeth, said pawl functioning to secure the movement away from the fixed jaw, and a knife carried by one of said jaws and having a cutting edge extending from the curved face thereof.

4. In a tool as set forth in claim 3, a shaft carried by each jaw and extending laterally therefrom, a roller supported upon each shaft, said movable jaw against rollers beingcentrally constricted, and a knife extending transversely through the constricted portion of one roller and through the supporting shaft and having a pointed end directed toward the constricted portion of the other roller.

5. A tool of the character stated comprising a handle having a shank at one end, an arm forming an integral continuation of the shank and extending substantially at right angles to the length of the handle, said arm having a slot extending lengthwise thereof, a second handle having a substantially parallel relation with the first handle and having an integral shank at one end, a plate forming an integral part of said shank and disposed across the slotted portion of said arm, said arm having an edge provided with a series of rack teeth, means extending through said slot and engaging said plat for slidably and pivotally coupling the plate to the arm, a shaft secured to and extending laterally from said plate, a pair of cones rotatably supported on said shaft and having their apical ends in opposed relation, a knife extending transversely through said shaft between said cones and having a pointed cutting end, a shaft carried by said arm adjacent the free end thereof and extending laterally in parallel relation with the first shaft, and a roller carried by the second shaft and having a constricted central portion, said knife point being directed toward the constricted portion of the said roller.

TONY P. ANELLO.

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