Coated abrasive belt machine

Claim 1

A BELT GRINDER COMPRISING A CONTACT ROLL, A BEARINGSUPPORTED SHAFT CARRYING THE SAME, MEANS TO TILT ONE END OF SAID SHAFT AND CONTACT ROLL, AN IDLER ROLL SPACED A SUBSTANTIAL DISTANCE IN BACK OF THE CONTACT ROLL, A SHAFT CARRYING THE IDLER ROLL, BEARINGS FOR SAID SHAFT, A YOKE CARRYING SAID BEARINGS AND LOCATED IN FRONT OF THE IDLER ROLL BETWEEN THE TOP AND BOTTOM SPANS OF THE ABRASIVE BELT, MEANS URGING SAID YOKE REARWARD TO TENSION THE BELT, AN OVERHUNG BEAM CARRYING SAID MEANS AT THE SIDE OF THE MACHINE HAVING THE FIXED BEARING, TRACKING MEANS AT THE LATTER SIDE OF THE MACHINE FOR DETECTING EXCESSIVE LATERAL MOVEMENT OF THE BELT, MEANS AUTOMATICALLY MOVED IN RESPONSE TO SAID TRACKING MEANS FOR TILTING THE ADJACENT END OF THE YOKE UPWARD OR DOWNWARD TO RESTORE PROPER BELT POSITION, THE OVERHUNG MOUNTING OF THE BEARING YOKE FACILITATING CHANGING THE ABRASIVE BELT, DRIVING MEANS FOR THE CONTACT ROLL, AND MEANS FOR OSCILLATING THE CONTACT ROLL FOR A SHORT DISTANCE IN AXIAL DIRECTION.