Tire-changing machine

Claim 1

A MACHINE FOR BREAKING THE SEALS BETWEEN PNEUMATIC TIRE BEADS AND THE WHEEL RIM SEATS THEREOF, IN A TIRE AND WHEEL ASSEMBLY IN WHICH THE RIM HAS AXIALLY OPPOSITE RIM FLANGE PORTIONS, COMPRISING: A FRAMEWORK; A RELATIVELY FIXED STOP MEMBER ON SAID FRAMEWORK AND HAVING A RIMENGAGING PART THEREON; A TIRE ENGAGING TOOL; POWER MEANS ON SAID FRAMEWORK FOR RECIPROCATION OF SAID TOOL IN DIRECTIONS TOWARD AND FROM A POINT LATERALLY SPACED FROM SAID RIM-ENGAGING PART; A VERTICALLY MOVABLE CRADLE FOR SUPPORTING THE TIRE AND WHEEL ASSEMBLY THEREON IN UPRIGHT RELATION INTERMEDIATE SAID STOP MEMBER AND SAID TOOL TO HAVE A PERIPHERAL RIM FLANGE PORTION POSITIONED BELOW SAID RIM-ENGAGING PART; MEANS FOR ELEVATING SAID CRADLE WHILE SAID ASSEMBLY IS RETAINED THEREON IN UPRIGHT RELATION UNTIL SAID RIM FLANGE PORTION COMES INTO STOP ENGAGEMENT WITH SAID RIM-ENGAGING PART, THEREBY TO ALIGN SAID RECIPROCABLE TOOL WITH AN EXPOSED GIVEN PORTION OF THE TIRE SIDEWALL ADJACENT THE OPPOSITE RIM FLANGE PORTION; WHEREBY UPON RECIPROCATION OF SAID TOOL THE SAME IS ENGAGEABLE WITH SAID GIVEN PORTION OF THE TIRE SIDEWALL TO BREAK THE SEAL OF THE CORRESPONDING BEAD WITH ITS RIM SEAT.