Cut-off machines

Claim 1

A CUT-OFF MACHINE COMPRISING: A PAIR OF MAIN FRAMES CONTAINING SLIDEWAYS; A BAND KNIFE UNIT CONTAINING A BAND KNIFE AND BAND WHEELS, THE SAID BAND KNIFE UNIT BEING MOUNTED UPON SLIDES, THE SAID SLIDES BEING ADAPTED TO MOVE ALONG SAID SLIDEWAYS IN RECIPROCATING MOTION PARALLEL TO THE AXES OF THE SAID BAND WHEELS OF THE SAID BAND KNIFE UNIT, THE SAID BAND WHEELS BEING OF DIAMETER EQUAL TO ANY ODD NUMBER MULTIPLIED BY THE FINISHED LENGTH OF THE PRODUCT BEING PROCESSED THE SAID BAND KNIFE HAVING POWER AND RETURN RUN; A PRODUCT CONVEYOR ADAPTED TO CONVEY AND POSITION A MULTIPLICITY OF LANES OF PRODUCT IN CONTINUING PLANE AND TO CUTTING RANGE OF BOTH THE SAID POWER AND RETURN RUNS OF THE SAID BAND KNIFE OF THE SAID BAND KNIFE UNIT; MEANS FOR ACTUATING THE SAID BAND KNIFE UNIT TO CAUSE COMPLETE SEVERANCE OF ALL LANES OF PRODUCT BY BOTH THE SAID POWER AND RETURN RUNS OF THE SAID BAND KNIFE; DRIVE MEANS TO INTERMITTENTLY URGE THE SAID PRODUCT CONVEYOR A DISTANCE EQUAL TO TWICE A FINISHED PRODUCT LENGTH, THE SAID PRODUCT CONVEYOR URGING MEANS BEING OPERABLE DURING ONLY THAT PART OF AN OPERATING CYCLE IN WHICH THE SAID BAND KNIFE IS ENTIRELY CLEAR OF THE PRODUCT.