Sheet registration device

Claim 1

IN A SHEET FEED MECHANISM, A FIRST SHAFT JOURNALED FOR ROTATION, A FIRST FEED ROLL MOUNTED ON SAID FIRST SHAFT FOR CONTINOUS ROTATION THEREWITH, A SECOND FEED ROLL JOURNALED FOR ROTATION, BIAS MEANS TO NORMALLY BIAS SAID SECOND FEED ROLL INTO COOPERATIVE RELATION WITH SAID FIRST FEED ROLL TO ADVANCE A SHEET THEREBETWEEN, A REGISTER STOP MOUNTED ON SAID FIRST SHAFT, SAID REGISTER STOP HAVING A STOP PORTION ADAPTED TO BE MOVED INTO INTERFERENCE RELATION WITH THE PATH OF TRAVEL OF A SHEET FORWARDED BETWEEN SAID FIRST FEED ROLL AND SAID SECOND FEED ROLL, A SECOND SHAFT JOURNALED FOR ROTATION, DRIVE MEANS CONNECTED TO SAID SECOND SHAFT TO ROTATE SAID SECOND SHAFT AT A PREDETERMINED FIXED RATE, VARIABLE SPEED DRIVEN MEANS CONNECTED BETWEEN SAID SECOND SHAFT AND SAID FIRST SHAFT WHEREBY SAID FIRST SHAFT IS DRIVEN BY SAID SECOND SHAFT AT VARIOUS SPEEDS WITH RESPECT TO SAID SECOND SHAFT THERBY RAPIDLY ADVANCING SAID STOP PORITON OF SAID REGISTER STOP INTO THE PATH OF TRAVEL OF A SHEET, THEN RAPIDLY RETARDING SAID STOP PORTION TO EFFECT ALIGNMENT AND REGISTRATION OF A SHEET AND THEN ROTATING SAID FIRST SHAFT AND THEREFORE SAID REGISTER STOP AND SAID FIRST FEED ROLL AT THE SAME ROTATIVE SPEED AS SAID SECOND SHAFT.