Guide and depth gauge for combination portable grinders and dressers

Claim 1

A COMBINATION PORTABLE GRINDING MACHINE AND DRESSER THEREFOR IN WHICH SAID GRINDING MACHINE GRINDS A SEAT IN A WORK PIECE HAVING A FIRST STOP SURFACE IN DEFINITE RELATION TO THE SEAT TO BE GROUND, SAID MACHINE HAVING A ROTARY GRINDING WHEEL AXIALLY MOVABLE INTO ENGAGEMENT WITH THE SEAT, SAID DRESSER HAVING A DRESSING TOOL FOR SAID GRINDING WHEEL AND A SECOND STOP SURFACE HAVING THE SAME FIXED RELATION WITH RESPECT TO THE DRESSING TOOL AS SAID FIRST STOP SURFACE IS TO SAID SEAT, MEANS ON SAID MACHINE HAVING A STOP ENGAGEABLE WITH SAID STOP SURFACES FOR STABILIZING AND LIMITING THE POSITION OF SAID GRINDING WHEEL SO THAT ITS GRINDING SURFACE IS IN THE SAME RELATIVE POSITION WITH RESPECT TO SAID STOP DURING DRESSING AND GRINDING OPERATIONS, AND MEANS TO ADJUST SAID STOP ON SAID MACHINE TO MAINTAIN SAID RELATIVE POSITION TO SAID GRINDING SURFACE TO COMPENSATE FOR CHANGE IN THE GRINDING SURFACE AFTER EACH DRESSING OPERATION.