Tooth space measuring machine

Claim 1

IN A GEAR TESTING MACHINE OF THE CHARACTER DESCRIBED, A BASE, A WORK HOLDING SPINDLE ROTATABLY MOUNTED IN SAID BASE, AN INDICATOR STYLUS MOUNTED ON SAID BASE ADJACENT TO SAID SPINDLE IN SUCH A POSITION AS TO BE ADAPTED TO ENGAGE THE TEETH OF A WORK GEAR MOUNTED ON SAID WORK HOLDING SPINDLE, MEAND TO INTERMITTENTLY ROTATE SAID WORK HOLDING SPINDLE, SAID LAST NAMED MEANS INCLUDING A DRIVING MOTOR A CRANK ADJUSTABLY CONNECTED TO AND DRIVEN BY SAID MOTOR, A MEMBER MOUNTED ON SAID SPINDLE AND ADAPTED TO BE CLAMPED THERETO, MEAND TO CLAMP SAID MEMBER TO SAID SPINDLE, AND A CONNECTING ROD JOINING SAID CRANK TO SAID MEMBER, WHEREBY SAID WORK SPINDLE IS URGED TO ROTATE WHEN SAID MEMBER IS CLAMPED TO SAID SPINDLE, ADJUSTABLE STOP MEAND CARRIED BY SAID BASE, AND A BEARING MEMBER FIXED TO SAID CONNECTING ROD ADAPTED TO BE LIMITED IN ITS MOTION BY SAID STOP MEANS, SAID CONNECTING ROD BEING RESILIENTLY COUPLED TO SAID CRANK SO THAT SAID CRANK MAY HAVE CONTINUED MOVEMENT IN A GIVEN DIRECTION WHILE SAID CONNECTING ROD IS HELD AGAINST MOVEMENT BY THE ENGAGEMENT OF SAID BEARING MEMBER WITH SAID STOP MEANS.