Belt drive assembly for facsimile recorder

Claim 1

IN A FACSIMILE RECORDER OF THE KIND EMPLOYING ELECTRIC WRITING ON A RECORDING MEDIUM, IN COMBINATION: AN ENDLESS BELT OF FLEXIBLE ORGANIC MATERIAL, STRANDED WIRES EMBEDDED LONGITUDINALLY IN THE INTERIOR OF THE BELT, COGS FORMED ON THE INNER SURFACE OF THE BELT, A PAIR OF BELT CARRYING PULLEYS EACH HAVING CIRCUMFERENTIALLY SPACED RECESSES ON THE PERIPHERY FOR ENGAGING THE COGS OF THE BELT, A PLURALITY OF STYLUS HOLDERS AFFIXED TO THE BELT, STYLUSES CARRIED BY SAID HOLDERS FOR WRITING ELECTRICALLY ON SAID MEDIUM DURING A PORTION OF TRAVEL OF THE BELT, MEANS ROTATABLY SUPPORTING ONE OF THE PULLEYS FOR ROTATION ON A FIXED AXIS, TENSIONING MEANS ROTATABLY SUPPORTING THE OTHER OF SAID PULLEYS ON A FLOATING AXIS WITH RESPECT TO SAID FIXED AXIS, AND DRIVE MEANS OPERATIVELY CONNECTED TO SAID TENSIONING MEANS FOR DRIVING SAID OTHER PULLEY, SAID TENSIONING MEANS COMPRISING A PLATE, THREE IDLER GEARS ROTATABLY MOUNTED ON SAID PLATE IN MESH WITH EACH OTHER, A FIRST ONE OF SAID GEARS HAVING A SHAFT EXTENDING OUTWARDLY FROM THE PLATE, A LEVER PIVOTALLY ENGAGED AT ONE END ON SAID SHAFT, A SECOND SHAFT ROTATABLY CARRIED BY SAID LEVER NEAR THE OTHER END THEREOF, A SPUR GEAR AT ONE END OF SAID SECOND SHAFT ENGAGED WITH THE FIRST IDLER GEAR, A TENSIONING MEMBER ON SAID PLATE, A SPRING CONNECTED BETWEEN SAID OTHER