Pneumatic wire stripping and twisting machine

A pneumatic wire stripper comprising wire clamping jaw means for clamping a wire to be stripped, a first pneumatic piston-cylinder assembly for opening and closing the clamping jaw means, cutting jaw means for cutting through wire insulation, a second pneumatic piston-cylinder means for opening and closing the cutting jaw means, the first and second piston-cylinder assemblies having parallel longitudinal axes, a third pneumatic piston-cylinder assembly including a cylinder having the cutting jaw means mounted thereon and a piston rod attached to the clamping jaw means, the third pneumatic piston-cylinder assembly having a longitudinal axis which is perpendicular to the longitudinal axes of the first and second assemblies for separation of the cutting jaw means from the clamping jaw means upon supply of pressurized air to the third assembly for stripping the insulation from one end of the wire, and sequence control means for providing supply of pressurized air to the third assembly only after the clamping jaw means and cutting jaw means have been operated to clamp a wire and cut the insulation and a predetermined air pressure value has been established in the first and second assemblies, the sequence control means including air passage means connected between the first and second assemblies and the third assembly for supply of air under pressure to the third assembly, and a pressure responsive valve in said passage means for closing the passage means when the pressure in the first and second assemblies is below the predetermined value and for opening the passage means when the pressure exceeds the predetermined value.