Paper feed mechanism for typewriter

Claim 1

IN A TYPEWRITER HAVING A PLATEN ROTATABLY SUPPORTED ON A MOVABLE CARRIAGE: A MECHANISM ADAPTED TO BE CONNECTED TO SAID PLATEN FOR DRIVING THE LATTER IN A PAPER FEEDING DIRECTION DURING THE MOVEMENT OF SAID CARRAIGE IN ONE DIRECTION, SAID MECHANISM COMPRISING, IN COMBINATION, A REEL, MEANS ROTATABLY SUPPORTING SAID REEL ON SAID CARRIAGE IN AXIAL ALIGNMENT WITH SAID PLATEN, A TAPE WOUND AROUND SAID REEL AND CONNECTED AT ITS OUTER END TO A STATIONARY POINT ON SAID TYPEWRITER, BIAS MEANS TENDING TO ROTATE SAID REEL IN A DIRECTION TO WIND TAPE THEREON, A CLUTCH ELEMENT, MEANS CONNECTING SAID CLUTCH ELEMENT TO SAID PLATEN FOR ROTATION THEREWITH BUT PERMITTING IT TO MOVE BODILY RELATIVE THERETO, SAID CLUTCH ELEMENT BEING ENGAGEABLE WITH SAID REEL FOR CONNECTING THE LATTER IN DRIVING RELATION WITH SAID PLATEN, MEANS YIELDINGLY URGING SAID CLUTCH ELEMENT TO A POSITION FREE OF SAID REEL, MEANS OPERATIVE WHEN SAID CARRIAGE REACHES ONE POSITION TO FORCE SAID CLUTCH ELEMENT INTO ENGAGEMENT WITH SAID REEL, AND MEANS TO HOLD SAID CLUTCH ELEMENT INTO SAID ENGAGEMENT UNTIL SAID CARRIAGE REACHES A SECOND POSITION.