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Title: Device for baring insulated electrical conductor wire and stranded wire
Claims: I claim: 1. A device for baring electrical conductor wires and stranded wires, comprising a first surface and a second surface movable over and relative to said first surface, an equalsized gripping section (16;32) on said second surface is movable over a longer lamellar gripping section (4; 30) on said first surface and an equal-sized gripping section (17; 53) on said second surface is movable over a shorter lamellar gripping section (5; 31) on the first surface positioned and running near an end portion of the longer gripping section (4; 30) of said first surface in the longitudinal direction of these surface sections (4, 5, 16, 17; 30, 31, 32, 33), a knife (7; 34) positioned between the longer and the shorter gripping section (4 and 5; 30 and 31) of the first and/or second surface and projecting an adjustable amount above said surface, said knife having a cutter portion which extends at least in the area of the shorter gripping surface section (5; 31) whereby an end piece of an insulated wire or a stranded wire projecting laterally over the knife (7; 34) on the side of the longer gripping surface section (4; 30) can first be rolled over the knife (7; 34) through the movement of the second surface between the longer and shorter gripping surface sections (4, 5 and 16, 17; 30, 31 and 32, 33), after which the piece of sheathing thereby circumcised from the remaining insulating sheathing can be rolled on between the longer gripping surface sections (4 and 16; 30 and 32), thereby turned relative to the wire or the stranded wire, the latter snaked and lastly the end of wire or stranded wire drawn out of the cut piece of insulating sheathing. 2. A device as in claim 1, in which said first and second surface each have an area (20, 21; 22, 23) adjacent to the shorter gripping surface section (5, 17; 31, 33) running near the longer gripping surface section (4, 16; 30, 32) that is smooth. 3. A device as set forth in claim 1, in which said knife extends over the entire area of the longer gripping surface section and has a sharp cutter portion in the area of the shorter gripping surface section and a blunt portion elsewhere. 4. A device as set forth in claim 1, in which said knife has a blunt cutter portion in the area of the shorter gripping surface section and is electrically heatable. 5. A device as set forth in claim 1, including a stop angle (9; 35) disposed near the adjacent ends of one shorter and one longer gripping surface section (4, 5; 30, 31), and being adjustable transverse to the longitudinal direction of the gripping surface sections and lockable in position. 6. A device as set forth in claim 1, in which the gripping surface sections (4, 5, 16, 17; 30, to 33) are formed with a multitude of cutters operating in the fashion of file strokes. 7. A device as set forth in claim 1 including a plate member (13; 25) carrying said second surface having a shorter and a longer gripping surface section (16, 17; 32, 33), a guide bar (14; 27), said plate member mounted to move and pivot on said guide bar and fitted with a roller (18) or a stop (36) which respectively ensure a minimum separation from said first surface having the other shorter and longer gripping surface sections (5, 4; 31, 30). 8. A device as set forth in claim 1 including a table member (3) and a plate member (13), said first surface carried by said table member (3) and the second surface (15) carried by said plate member (13), and said plate member guided displaceably relative to the table member in the longitudinal direction of the lamellar gripping surface sections (4, 5, 16, 17). 9. A device as set forth in claim 1, in which said first surface and said second surface are respectively formed on two plate members (24, 25) which are displaceable relative to one another with necessarily opposed identical movements. 10. A device as in claim 9, in which both plate members (24, 25) are attached to parts, running parallel with the direction of displacement, including a pulling means (37) running about a stationary deflection roller (40) and which runs endlessly over two deflection rollers or is connected at one end (38) with one plate member (24) and at the other end (39) with the other plate member (25) and kept taught by a spring (42). 11. A device as in claim 9, in which said two plate members are each fitted with a toothed rack which mesh opposite one another with a cog rotatable about a stationary axis. 12. A device as in claim 9, including a gripping element (47, 48) projecting over the side edge of each plate member (24, 25) adjacent the shorter gripping surface sections (31, 33), each said gripping element is attached to the end of an arm (45, 46), mounted pivotally on the other side of the plate, spring means (49, 50) engaging each said arm tending to urge the gripping elements against one another and force each gripping element to adopt the position at the edge of the plate which is close to the end of the shorter gripping surface section (31, 33) which lies between the ends of the longer gripping surface section (30, 32), in which the forces exerted by the gripping elements are reciprocally opposed and identical. 13. A device as set forth in claim 1, in which said gripping surfaces are formed on the circumference of rollers drivable with the same direction of rotation and the same peripheral speed. 14. A device as in claim 13, including near the edges of the surfaces of the rollers, to which the shorter gripping surface sections are adjacent, a gripping device is disposed controlled by the roller drive, said gripping device having gripping elements which perform a gripping movement to grasp the conductor wire or stranded wire when the shorter gripping surface sections have moved past one another and their gripping elements move away from the edges during the continued movement of the surface, thereby to draw the end of the wire or stranded wire out of the device and thus out of the cut piece of conductor sheathing. Other info: Inventors: Roth, Paul (1411 Les Tuileries-de-Grandson, CH) Application Number: 525681 Filing Date: 1974-11-20 Publication_date: 1976-02-03 Assignee: Primary Class(es): 81/9.51 Other Classes: US Patent Ref:
Other Refs: Primary Examiner: Smith, Al Lawrence Assistant Examiner: Parker, Roscoe V. Attorney: Brady, O'Boyle & Gates |
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