Strip measuring means for strip cutting machines

Claim 1

IN WEB STRIP CUTTING APPARATUS INCLUDING A PAIR OF CONTINUOUSLY OPERATING ROTARY CUTTER MEMBERS ADAPTED UPON EACH CYCLE THEREOF TO EFFECT SEVERANCE OF A STRIP FROM A WEB OF MATERIAL PASSED BETWEEN THEM, AND INCLUDING MEANS FOR CONTINUOUSLY ADVANCING BETWEEN THE CUTTER MEMBERS THE WEB OF MATERIAL; AN ELECTRONIC MEASURING SYSTEM FOR TAKING A MEASUREMENT OF THE LENGTH OF ANY SELECTED STRIP OF THE WEB TO BE CUT, COMPRISING A LIGHT RESPONSIVE PULSE EMITTER, AN ELECTRONIC COUNTER CONNECTED IN THE OUTPUT OF THE EMITTER, A LIGHT SOURCE FOR ACTUATING THE EMITTER, A SCANNING DISC ROTATING BETWEEN THE LIGHT SOURCE AND THE EMITTER TO INTERRUPT AT SHORT EQUALLY TIMED INTERVALS PASSAGE OF LIGHT FROM THE SOURCE TO THE EMITTER, WHEEL MEANS CONNECTED TO THE SCANNING DISC ARRANGED TO TRANSLATE ADVANCING MOVEMENT OF THE WEB INTO ROTATING MOVEMENT OF THE SCANNING DISC, A SIGNAL LIGHT CIRCUIT INCLUDING A NORMALLY OPEN SPRING SWITCH, AND CAM MEANS CARRIED BY ONE OF THE CUTTER MEMBERS FOR EFFECTING SIMULTANEOUSLY WITH EACH SEVERANCE OPERATION OF THE CUTTER MEMBERS MOMENTARY CLOSING OF THE SPRING SWITCH TO MOMENTARILY ENERGIZE THE SIGNAL LIGHT CIRCUIT, THE NUMBER OF PULSES RECORDED BY THE COUNTER BETWEEN SEVERANCE OPERATIONS SERVING TO INDICATE A CORRESPONDING LENGTH OF THE STRIP CUT FROM THE WEB.