GB2154809A - Cable insulation removal - Google Patents

Abstract

A baring tool comprises two hingedly connected jaws 1, 2 having cutters 5, 6 provided on spacing blocks 7, 8 mounted in the respective jaws and at one end thereof, the cutters 5, 6 being disposed perpendicularly of the axis of the hinge connection 3, 4 between the jaws and such hinge connection being adapted and arranged to allow of a relative translational movement between the cutters transversely of the said axis by reason of the hinge lug 9 being located in an oblong hole 10. The tool further includes an additional cutter 12 for slitting the insulation longitudinally of the cable. <IMAGE>

Description

SPECIFICATION Cable insulation removal The invention relates to a baring tool for the removal of the external insulation of single or multi-core cables, more especially flat cables.

For the removal of the insulation sheath on the cable, there is known, inter alia, a stripping tool which consists of two jaws which can be moved towards each other and which have, close to one of their ends, opposite cutters. They are so fitted in the jaws that they cut into the insulation sheath more or less all around in the operating position and when the jaws are rotated so that the severed piece can be withdrawn. But this operation can in practice be performed satisfactorily only on cables which are round. For example, flat cables cannot be stripped with the conventional baring tool since the cutters arranged in the jaws especially for a round cut cannot grasp parts, more especially the flat partial sections, of a flat cable.

The invention has set itself the task to eliminate this disadvantage of stripping tools of the kind described at the beginning and to modify the tool with respect to the design and the arrangement of the cutters in the jaws so that it can be used mainly or especially for stripping flat cables.

According to the present invention there is proposed a baring tool for the removal of the external insulation of single or multi-core flat cables by two jaws which can be moved towards each other and which have, close to one of their ends, opposite cutters, characterised in that the cutters for the round cut are arranged in spacing blocks, of which at least one block has a contact surface extending perpendicularly to the hinge axis and is adjustable by means of the jaws via the hinge axis, and in that one jaw comprises an additional cutter for the longitudinal cut.

The invention will now be described further, by way of example only, with reference to the accompanying drawing illustrating one embodiment thereof and in which: Figure 1 shows an elevation of the baring tool in open condition; and Figure 2 shows a top view thereof.

The jaws 1, 2 have, in known manner, a partly cylindrical shape in cross-section and are pivotally connected together with hinges 3, 4 on adjacent longitudinal sides so that they can be shut to form a hollow body. The jaws 1, 2 are provided, at one end, with opposite cutters 5, 6 which, according to one special feature of the invention, are arranged in spacing blocks 7, 8. The blocks 7, 8 have contact surfaces extending perpendicularly to the hinge axis and from which the cutting edges of the cutters 5, 6 project in accordance with the required cutting depth for the all-round cut into the insulation sheath of the cable to be stripped.Furthermore, the hinge lug 9 of the jaw 2 is provided with a longitu dinl bore which, in cross-section, has the shape of an oblong hole 10 so that the jaw 2, in its cutter zone, is movable with respect to the fixed hinge pin 11 to the extent of the oblong hole size transversely to the hinge axis. This serves the purpose that in the operating position of the tool, in other words when the cable is inserted and the jaws 1, 2 are shut, the distance of the cutters, 5, 6 is automatically adjustable in accordance with the thickness of the cable. Finally, an additional cutter 1 2 is provided on the outer edge of the jaw 2 beneath the cutter 6. This cutter 1 2 has the shape of an acute-angled triangle with a cutting edge on the base side.It serves for carrying out, in addition to the round cut, the traversely extending longitudinal cut in the cable sheath. The other jaw 1 has, opposite to the additional cutter 1 2, a recess 13, in which the cutter 1 2 is placed when the jaws 1, 2 are shut, in other words in the inoperative state of the tool.

For baring a cable, especially a flat cable, the same is placed between the jaws 1, 2, when, as the jaws 1, 2 are compressed and turned around the cable, the cable sheath is cut all around with the cutters, 5, 6. Thereafter, the cable is removed from the jaws, 1, 2 and its cable sheath, from the round cut from 6, is cut open in the longitudinal direction with the additional cutter 1 2 while the jaws 1, 2 are opened. The cable sheath piece thus provided with a round cut and a longitudinal cut can then be withdrawn by hand from the remaining sheath without any effort so that the cable cores are freely accessible for further manipulations.

1. A baring tool for the removal of the external insulation of single or multi-core flat cables by two jaws which can be moved towards each other and which have, close to one of their ends, opposite cutters, characterised in that the cutters for the round cut are arranged in spacing blocks, of which at least one block has a contact surface extending perpendiuclarly to the hinge axis and is adjustable by means of the jaws via the hinge axis, and in that one jaw comprises an additional cutter for the longitudinal cut.

2. A baring tool as claimed in claim 1, characterised in that, for the adjustment, the cutter-end hinge lug of the jaw has a longitudinal bore which, in cross-section, is designed as an oblong hole.

3. A baring tool as claimed in claim 1 or 2, characterised in that the additional cutter is designed in the shape of a triangle with cutting edges provided on the base side and, beneath the cutter provided on the jaw, is arranged so as to be projecting on the jaw outer edge.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Cable insulation removal The invention relates to a baring tool for the removal of the external insulation of single or multi-core cables, more especially flat cables. For the removal of the insulation sheath on the cable, there is known, inter alia, a stripping tool which consists of two jaws which can be moved towards each other and which have, close to one of their ends, opposite cutters. They are so fitted in the jaws that they cut into the insulation sheath more or less all around in the operating position and when the jaws are rotated so that the severed piece can be withdrawn. But this operation can in practice be performed satisfactorily only on cables which are round. For example, flat cables cannot be stripped with the conventional baring tool since the cutters arranged in the jaws especially for a round cut cannot grasp parts, more especially the flat partial sections, of a flat cable. The invention has set itself the task to eliminate this disadvantage of stripping tools of the kind described at the beginning and to modify the tool with respect to the design and the arrangement of the cutters in the jaws so that it can be used mainly or especially for stripping flat cables. According to the present invention there is proposed a baring tool for the removal of the external insulation of single or multi-core flat cables by two jaws which can be moved towards each other and which have, close to one of their ends, opposite cutters, characterised in that the cutters for the round cut are arranged in spacing blocks, of which at least one block has a contact surface extending perpendicularly to the hinge axis and is adjustable by means of the jaws via the hinge axis, and in that one jaw comprises an additional cutter for the longitudinal cut. The invention will now be described further, by way of example only, with reference to the accompanying drawing illustrating one embodiment thereof and in which: Figure 1 shows an elevation of the baring tool in open condition; and Figure 2 shows a top view thereof. The jaws 1, 2 have, in known manner, a partly cylindrical shape in cross-section and are pivotally connected together with hinges 3, 4 on adjacent longitudinal sides so that they can be shut to form a hollow body. The jaws 1, 2 are provided, at one end, with opposite cutters 5, 6 which, according to one special feature of the invention, are arranged in spacing blocks 7, 8. The blocks 7, 8 have contact surfaces extending perpendicularly to the hinge axis and from which the cutting edges of the cutters 5, 6 project in accordance with the required cutting depth for the all-round cut into the insulation sheath of the cable to be stripped.Furthermore, the hinge lug 9 of the jaw 2 is provided with a longitu dinl bore which, in cross-section, has the shape of an oblong hole 10 so that the jaw 2, in its cutter zone, is movable with respect to the fixed hinge pin 11 to the extent of the oblong hole size transversely to the hinge axis. This serves the purpose that in the operating position of the tool, in other words when the cable is inserted and the jaws 1, 2 are shut, the distance of the cutters, 5, 6 is automatically adjustable in accordance with the thickness of the cable. Finally, an additional cutter 1 2 is provided on the outer edge of the jaw 2 beneath the cutter 6. This cutter 1 2 has the shape of an acute-angled triangle with a cutting edge on the base side.It serves for carrying out, in addition to the round cut, the traversely extending longitudinal cut in the cable sheath. The other jaw 1 has, opposite to the additional cutter 1 2, a recess 13, in which the cutter 1 2 is placed when the jaws 1, 2 are shut, in other words in the inoperative state of the tool. For baring a cable, especially a flat cable, the same is placed between the jaws 1, 2, when, as the jaws 1, 2 are compressed and turned around the cable, the cable sheath is cut all around with the cutters, 5, 6. Thereafter, the cable is removed from the jaws, 1, 2 and its cable sheath, from the round cut from 6, is cut open in the longitudinal direction with the additional cutter 1 2 while the jaws 1, 2 are opened. The cable sheath piece thus provided with a round cut and a longitudinal cut can then be withdrawn by hand from the remaining sheath without any effort so that the cable cores are freely accessible for further manipulations. CLAIMS

1. A baring tool for the removal of the external insulation of single or multi-core flat cables by two jaws which can be moved towards each other and which have, close to one of their ends, opposite cutters, characterised in that the cutters for the round cut are arranged in spacing blocks, of which at least one block has a contact surface extending perpendiuclarly to the hinge axis and is adjustable by means of the jaws via the hinge axis, and in that one jaw comprises an additional cutter for the longitudinal cut.

2. A baring tool as claimed in claim 1, characterised in that, for the adjustment, the cutter-end hinge lug of the jaw has a longitudinal bore which, in cross-section, is designed as an oblong hole.

3. A baring tool as claimed in claim 1 or 2, characterised in that the additional cutter is designed in the shape of a triangle with cutting edges provided on the base side and, beneath the cutter provided on the jaw, is arranged so as to be projecting on the jaw outer edge.

4. A baring tool as claimed in any one of claims 1 to 3, characterised in that, for the additional cutter, there is provided in the jaw opposite thereto a recess.

5. A baring tool substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.