Paper-feed mechanism for printing machines, having improved means for tensioning and positioning paper

Claim 1

IN A PRINTING MACHINE, A PAPER-FEED MECHANISM COMPRISING A FRAME, FIRST AND SECOND SPINDLES FOR ENGAGEMENT WITH A LENGTH OF PAPER EXTENDING THEREBETWEEN, SAID SPINDLES BEING MOUNTED IN SAID FRAME FOR ROTATION ABOUT SPACED-APART PARALLEL AXES, AN ENDLESS BELT DRIVINGLY INTERCONNECTING SAID SPINDLES, MEANS FOR DRIVING SAID FIRST SPINDLE, DISENGAGEABLE MEANS FOR BRAKING SAID FIRST SPINDLE, SAID BRAKING MEANS COMPRISING A BRAKE ROTOR DRIVINGLY CONNECTED WITH SAID FIRST SPINDLE AND A BRAKE HOUSING ENGAGEABLE WITH SAID ROTOR AND ROTATABLY MOUNTED IN SAID FRAME, AND ADJUSTABLE POSITIONING MEANS FOR SECURING SAID BRAKE HOUSING IN A SELECTED ANGULAR POSITION WITH RESPECT TO SAID FRAME, SUCH THAT THE ANGULAR POSITIONS OF SAID SPINDLES WITH RESPECT TO SAID FRAME MAY BE EQUALLY AND JOINTLY ADJUSTED WHEN SAID ROTOR AND HOUSING ARE ENGAGED TO POSITION A LENGTH OF PAPER ENGAGED WITH SAID SPINDLES.