Tire changing stand

Claim 1

A POWER OPERATED TIRE CHANGER FOR VEHICULAR TIRES, COMPRISING: A TIRE CHANGING STAND HAVING A PLATFORM FOR HOLDING A WHEEL RIM THEREON; A SPINDLE ON SAID PLATFORM EXTENDING GENERALLY THROUGH THE CENTER OF SAID RIM WITH THE OUTER END THEREOF EXPOSED; A ROTATABLE TIRE TOOL DRIVING SHAFT JOURNALED IN SAID SPINDLE AND HAVING AN EXPOSED END FOR ENGAGING A TIRE MOUNTING AND DEMOUNTING TOOL AND DRIVING THE TOOL PERIPHERALLY OF THE WHEEL RIM FOR PROGRESSIVELY MOUNTING AND DEMOUNTING OF A TIRE THEREON, DRIVE MEANS FOR SAID ROTATABLE SHAFT INCLUDING GEAR MEANS ON SAID ROTATABLE SHAFT AND SWINGABLE GEAR SEGMENT MEANS PIVOTALLY MOUNTED IN MESH WITH SAID SHAFT GEAR MEANS, A PNEUMATIC PISTON AND CYLINDER DEVICE WITHIN SAID STAND CONNECTED WITH SAID GEAR SEGMENT MEANS TO ROCK SAID SEGMENT MEANS THROUGH AN ARCUATE PATH ABOUT ITS PIVOTAL MOUNTING AND ROTATE SAID TOOL DRIVING SHAFT THEREBY, BEAD BREAKER MEANS OPERABLY ASSOCIATED WITH SAID DRIVE MEANS FOR SELECTIVE ENGAGEMENT THEREWITH TO LOOSEN THE TIRE BEAD FROM THE TIRE RIM AND PREPARE THE TIRE FOR DEMOUNTING FROM SAID RIM, SAID BEAD BREAKER MEANS COMPRISING A DEPENDING SHOE MOUNTED ON A SWINGABLE LEVER HAVING A FREE END, SAID TIRE CHANGER INCLUDING A DEPENDING LINK ON SAID GEAR SEGMENT SO THAT THE FREE END OF SAID LEVER IS SELECTIVELY ENGAGEABLY WITH THE FREE END OF SAID LINK TO MOVE SAID BEAD BREAKER SHOE TOWARD SAID TIRE UPON ACTUATION OF SAID PISTON AND CYLINDER DEVICE.