Grinder

Claim 1

IN A GRINDING MACHINE INCLUDING A MACHINE BED, A WORK SUPPORT ON SAID BED, A GRINDING WHEEL, A GRINDING WHEEL SLIDE ROTATABLY SUPPORTING SAID GRINDING WHEEL AND MOUNTED FOR ADJUSTMENT TOWARD AND AWAY FROM SAID WORK SUPPORT, A MAIN FEED ADJUSTMENT SPINDLE ROTATABLY MOUNTED IN SAID BED AND FIXED AGAINST AXIAL DISPLACEMENT RELATIVE THERETO, FIRST NON-ROTATABLE NUT MEANS THREADED ON SAID MAIN FEED ADJUSTMENT SPINDLE AND DISPLACEABLE AXIALLY RELATIVE TO SAID BED, A TRUING SLIDE MOUNTED FOR ADJUSTMENT RELATIVE TO SAID GRINDING WHEEL SLIDE IN A DIRECTION PARALLEL TO THE DIRECTION OF ADJUSTMENT OF THE LATTER, A TRUING TOOL ON SAID TRUING SLIDE ENGAGEABLE WITH SAID GRINDING WHEEL UPON RETRACTION OF THE LATTER FROM THE WORK SUPPORT, A TRUING SLIDE ADJUSTMENT SPINDLE ROTATABLY MOUNTED IN SAID GRINDING WHEEL SLIDE AND FIXED AGAINST AXIAL DISPLACEMENT RELATIVE THERETO, AND A NON-ROTATABLE NUT THREADED ON SAID TRUING SLIDE ADJUSTMENT SPINDLE AND FIXED TO SAID TRUING SLIDE; MEANS FOR AUTOMATICALLY COMPENSATING THE WORKING POSITION OF SAID GRINDING WHEEL FOR MATERIAL REMOVED THEREFROM DURING TRUING, SAID LAST-NAMED MEANS COMPRISING, IN COMBINATION, A THREADED COMPENSATING SPINDLE ROTATABLY MOUNTED IN SAID GRINDING WHEEL SLIDE AND FIXED AGAINST AXIAL DISPLACEMENT RELATIVE THERETO; SECOND NON-ROTATABLE NUT MEANS THREADED ON SAID COMPENSATING SPINDLE; MEANS MAINTAINING SAID FIRST AND SECOND NUT MEANS FIXED AGAINST RELATIVE AXIAL DISPLACEMENT DURING ROTATION OF SAID COMPENSATING SPINDLE; AND MEANS INTERCONNECTING SAID TRUING SLIDE ADJUSTMENT SPINDLE AND SAID COMPENSATING SPINDLE FOR CONJOINT AND EQUAL ANGULAR ADJUSTMENT UPON ROTATION OF SAID TRUING SLIDE ADJUSTMENT SPINDLE; WHEREBY, UPON ADJUSTMENT OF SAID TRUING SLIDE FOR TRUING OF SAID GRINDING WHEEL, SAID GRINDING WHEEL SLIDE IS ADJUSTED, RELATIVE TO SAID MAIN FEED ADJUSTMENT SPINDLE, BY EXACTLY THE AMOUNT OF SAID TRUING SLIDE ADJUSTMENT.