Variable speed attachment for carding machines

Claim 1

FOR CARDING MACHINES, A VARIABLE SPEED ATTACHMENT COMPRISING A MAIN FRAME, A FIRST SHAFT MOUNTED ON SAID MAIN FRAME, A COMBINATION PULLEY ON SAID FIRST SHAFT HAVING A V-BELT PORTION AND A FLAT BELT PORTION, A SUBFRAME PIVOTALLY MOUNTED ON SAID MAIN FRAME FOR PIVOTAL MOVEMENT TOWARD AND AWAY FROM THE FIRST SHAFT, ANOTHER SHAFT CARRIED BY SAID SUBFRAME PARALLEL TO SAID FIRST SHAFT AND MOVABLE WITH THE SUBFRAME TOWARD AND FROM THE FIRST SHAFT, A VARIABLE SPEED PULLEY MOUNTED ON THE OTHER SHAFT HAVING FIXEDLY SPACED INNER AND OUTER CONE DISKS AND AN INTERMEDIATE DOUBLE-CONE DISK SLIDABLE THEREBETWEEN DEFINING A PAIR OF PULLEY GROOVES, A FIRST V-BELT MOUNTED ON THE V-BELT PORTION OF THE COMBINATION PULLEY ON THE FIRST SHAFT AND THE VARIABLE PULLEY ON THE OTHER SHAFT, A SECOND V-BELT MOUNTED IN THE OTHER GROOVE OF THE VARIABLE PULLEY AND ON A DRIVE PULLEY DRIVEN BY THE CARDING MACHINE, ADJUSTABLE STOP MEANS CARRIED BY THE SUBFRAME AND ENGAGEABLE WITH THE MAIN FRAME TO PREDETERMINEDLY LIMIT MOVEMENT OF THE SUBFRAME AND OTHER SHAFT TOWARD THE FIRST SHAFT AND THEREBY SELECTIVELY SET THE MAXIMUM SPEED AT WHICH THE PULLEY ON THE FIRST SHAFT IS DRIVEN BY SAID VBELT, SPRING MEANS NORMALLY URGING THE SUBFRAME AND SAID OTHER SHAFT TO THE LIMIT POSITION DETERMINED BY SAID STOP MEANS, AND MEANS FOR ACTUATING THE SUBFRAME AND OTHER SHAFT RELATIVE TO SAID LIMIT POSITION WITH RESPECT TO THE FIRST SHAFT AND THEREBY VARY THE PITCH DIAMETER OF THE VARIABLE PULLEY ON THE OTHER SHAFT AND CORRESPONDINGLY CHANGE THE SPEED AT WHICH THE COMBINATION PULLEY ON THE FIRST SHAFT IS DRIVEN BY SAID BELT.