Seam jumping apparatus for cloth shearing machines

Claim 1

SEAM JUMPING MECHANISM FOR A CLOTH SHEAR INCLUDING A FRAME, A ROTARY AND LEDGER BLADE SHEARING MEANS ON THE FRAME IN COMBINATION WITH A CLOTH REST, MEANS MOUNTING THE CLOTH REST FOR MOTION TO AND FROM THE ROTARY AND LEDGER BLADES, AND MEANS MAINTAINING THE ROTARY BLADE AND LEDGER BLADE IN FIXED RELATION TO EACH OTHER AND TO THE FRAME, MEANS FOR MOVING THE CLOTH REST TO PROVIDE A GAP IN THE SHEARING ACTION AS A SEAM APPROACHES THE SHEARING AREA, SAID MEANS EMBODYING A SEAM DETECTOR POSITIONED ADJACENT THE CLOTH REST, THE MOUNTING MEANS FOR THE CLOTH REST COMPRISING AN ECCENTRIC SHAFT, MEANS TO AT LEAST PARTIALLY ROTATE THE SAME, MEANS ACTUATING SAID ROTATING MEANS UNDER THE CONTROL OF THE SEAM DETECTOR ACCORDING TO THE PASSAGE OF A SEAM, THE MEANS FOR AT LEAST PARTIALLY ROTATING THE ECCENTRIC SHAFT INCLUDING A WRAPAROUND FLEXIBLE DEVICE AND MEANS FOR MOVING THE SAME SELECTIVELY IN EITHER DIRECTION.