Wire stripping tools
AssigneeNone recorded
InventorZdzislaw Bieganski
Life of this patent
Estimating the term…
Loading patent…
AssigneeNone recorded
InventorZdzislaw Bieganski
Estimating the term…
The invention provides a tool for stripping the sheath or covering from a wire or cable, comprising a pair of gripping jaws for holding the sheath and a pair of cutting jaws for cutting the sheath, means for closing the pairs together and then for separating the pairs so as to displace the cut portion relative to the gripped portion, in which the displacing means includes a lost motion coupling so that an initial portion of the displacement is used for jaw closing but without effecting relative displacement, and with the jaw closing being effected by a cam which is arranged to provide for jaw opening at the end of the displacement movement.
A wire stripping device comprising a body having a pair of gripping jaws pivoted thereon, a cylinder fixed to the body having an axially movable piston and piston rod, and a pair of cutting jaws which are pivoted to a member that has a lost motion connection with the piston rod, to permit limited initial motion of the piston rod relative to said member, wherein the improvement comprises a cam mounted on the piston rod and having a first jaw-closing surface, a second dwell surface to hold the gripping jaws closed, and a third jaw-opening surface, the cutting jaws being arranged between and in driving contact with the gripping jaws for actuation by the gripping jaws, cam followers including levers pivoted on the gripping jaws, spring means urging the cutting jaws apart into said driving contact with the gripping jaws, the cam surfaces being arranged to close both pairs of jaws during initial movement of the piston rod relative to said member, to hold the gripping jaws closed during further movement of the piston carrying along said member, and to open both pairs of jaws during still further movement of the piston and member, and resilient means fixed to the gripping jaws providing resistance to said levers during movement of the piston rod.
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
No related US applications are recorded in the indexed filing history.
This invention relates to tools for stripping the sheaths or coverings from wires, cables, and the like, for example from the end portions of the same. This may be accomplished by making a cut or cuts wholly or partly through the sheath, and then displacing the sheath and the core relative to one another.
The object of the present invention is to provide a simplified tool for these purposes.
In accordance with the present invention, a wire stripping tool comprises a first pair of gripping jaws, a second pair of cutting jaws located between the first pair, an axially movable part coupled to the second jaws by a lost motion device whereby a first part of an axial movement is effected without displacing the second pair of jaws, and a second part of said movement displaces the second pair of jaws relative to the first, and cam and abutment means between the said part and the first pair of jaws whereby axial movement closes both pairs of jaws before the displacement occurs.
FIG. 1 is a sectional elevation of a tool in a first position;
FIGS. 2 to 4 are fragmentary views of the same showing successively, second, third and fourth positions.
Referring now to the drawings, particularly to FIG. 1 thereof, the tool shown comprises a bifurcated body 10 which houses, between its two parallel portions, a pair of first jaws 12, each of which is pivoted on a corresponding cross pin 14, the two cross pins being parallel to one another, and the ends of the cross pins being received in the two body portions. Hence the jaws 12, which form gripping jaws, can pivot from a parallel position as in FIGS. 1 and 4 to the intermediate and relatively inclined positions of FIGS. 2 and 3.
Located between the gripping jaws 12 is a second pair of jaws 16, which are pivoted on a common pin 18 carried at one end of a stem 20. A compression spring 22 between the two jaws 16 urges them apart and takes the heels 24 of the jaws towards the adjacent surfaces of the gripping jaws 12.
Jaws 16 are provided with inwardly directed chisel like cutting portions 26 and jaws 12 are provided with inwardly directed and conveniently serrated gripping portions 28.
Making a transverse cut: using wire or cable clamping means
Installation of electric cables or lines, or of combined optical and electric
Term ended 7 Feb 1995 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.