Apparatus for stripping insulation from stranded electrical cable

Claim 2

Apparatus for stripping a length of thermally deteriorable insulation from a multiple wire strand cable comprising, in combination, a pair of stripping blades having opposed, sufficiently blunt stripping edges so that they will not nick the wire strands of said cable when pressed against and moved across said strands, means for urging said stripping blades toward each other and against the insulation of said cable when said cable is inserted between said stripping edges, means for heating said stripping blades, means for clamping said cable in a position so that a length thereof may be inserted between said stripping blades, means for rotating said clamping means and said stripping blades relative to each other, and means for moving said clamping means and said stripping blades relative to each other in a direction axial of said cable.

Claim 3

Apparatus for stripping a length of thermally deteriorable insulation from a multiple strand cable, comprising, in combination, a rotatable stripping blade carrier, a pair of stripping blades having sufficiently blunt stripping edges so that they will not nick the strands of said cable when pressed against and moved across said strands, means for mounting said stripping blades on said rotatable carrier so that they are movable relative to each other in a radial direction and said blunt edges are opposed and including resilient means for urging said pair of stripping blades toward each other and against the insulation of said multiple strand cable when it is inserted between said blunt stripping edges, means for heating at least one of said blades, and means for clamping said cable in coaxial relation to said rotatable carrier with a length thereof inserted between said opposed stripping blades, said means for clamping and said carrier being movable relative to each other in a direction parallel to the axis of said cable.

Claim 4

Apparatus for stripping a length of thermally deteriorable insulation from a multiple strand cable, comprising, in combination, a rotatable stripping blade carrier, a pair of stripping blades having sufficiently blunt stripping edges so that they will not nick the strands of said cable when pressed against and moved across said strands, means for mounting said stripping blades on said rotatable carrier so that they are movable relative to each other in a radial direction and said blunt edges are opposed and including resilient means for urging said pair of stripping blades toward each other and against the insulation of said multiple strand cable when it is inserted between said blunt stripping edges, means for heating at least one of said blades, and means for clamping said cable in coaxial relation to said rotatable carrier with a length thereof inserted between said opposed stripping blades, said means for clamping and said carrier being movable relative to each other in a direction parallel to the axis of said cable.

Claim 5

Apparatus in accordance with claim 2 wherein said means for clamping includes a member disposed adjacent said rotatable carrier with a cable-receiving surface thereof parallel to said axis of rotation of said carrier and said apparatus also includes fulcrumed lever means for operatively engaging one of said blades and moving it in a radially outward direction to separate said pair of blades.

Claim 6

Apparatus for stripping a length of thermally deteriorable insulation from a multiple strand cable comprising, in combination, a base, a circular support affixed to said base, a stripping blade carrier rotatably mounted on said circular support, a pair of hollow blade supports, means for mounting said blade supports on said rotatable carrier so that they are movable radially relative to each other and including spring means for resiliently urging said blade supports toward each other, a pair of stripping blades having stripping edges each of which is affixed to one of said blade supports so that said stripping edges are opposed, said stripping edges being sufficiently blunt so that they will not nick the wire strands of said cable when pressed against and moved across said strands, resistance element means disposed in said hollow blade supports for heating said stripping blades, lever means fulcrumed on said base Selectively operable to engage one of said blade supports and move it in a radially outward direction to separate said stripping blades, and means for clamping said cable on said base with its axis coincident with the axis of rotation of said blade carrier and a length thereof inserted between said opposed stripping blades.

Claim 7

Apparatus for stripping a length of thermally deteriorable insulation from a multiple strand cable comprising, in combination, a base, a circular support affixed to said base, a stripping blade carrier rotatably mounted on said circular support, a pair of hollow blade supports, means for mounting said blade supports on said rotatable carrier so that they are movable radially relative to each other and including spring means for resiliently urging said blade supports toward each other, a pair of stripping blades having stripping edges each of which is affixed to one of said blade supports so that said stripping edges are opposed, said stripping edges being sufficiently blunt so that they will not nick the wire strands of said cable when pressed against and moved across said strands, resistance element means disposed in said hollow blade supports for heating said stripping blades, lever means fulcrumed on said base Selectively operable to engage one of said blade supports and move it in a radially outward direction to separate said stripping blades, and means for clamping said cable on said base with its axis coincident with the axis of rotation of said blade carrier and a length thereof inserted between said opposed stripping blades.

Claim 8

Apparatus in accordance with claim 4 wherein said means for clamping includes a cable-supporting member mounted on and reciprocable relative to said base with a surface parallel to said axis of rotation, a clamp on said cable-supporting member, and air cylinder means selectively operable to reciprocate said cable-supporting member relative to said base in a direction parallel to said axis of rotation and away from said blade carrier.