Brake shoe clamping device

Claim 1

A PRESSURE-MAINTAINGING SPACER DEVICE FOR USE IN THE METHOD OF BONDING FRICTION MATERIAL TO AUTOMOBILE BRAKE SHOES WHEREIN A PAIR OF BRAKE SHOES ARE ASSEMBLED WITH FRICTION MATERIAL AND AN INTERPOSED LAYER OF THERMOSETTING CEMENT AND HELD WITHIN A RESTRAINING MEMBER UNDER COMPRESSION BY PRESSURE-APPLYING MEMBERS THAT ABUT THE INNER CURVED SURFACES OF SAID SHOES AND ARE INITIALLY FORCED OUTWARD AGAINST SAID SURFACES BY AN ASSEMBLY DEVICE, SAID PRESSURE-MAINTAINING SPACER DEVICE BEING ADAPTED TO MAINTAIN SAID PRESSURE-APPLYING MEMBERS FORCED OUTWARD AFTER THE ASSEMBLY HAS BEEN REMOVED FORM THE ASSEMBLY DEVICE, SAID PRESSURE-MAINTAINING SPACER DEVICE INCLUDING A SCREW JACK HAVING RELATIVE ROTATABLE PORTIONS AND DISPOSED BETWEEN SAID PRESSURE-APPLYING MEMBERS, COMPRESSION SPRING MEANS DISPOSED BETWEEN THE SAID SCREW JACK AND SAID PRESSURE-APPLYING MEMBERS AND A LOCKING COLLAR HAVING PORTIONS TO ENGAGE THE RELATIVELY MOVABLE PORTIONS OF SAID SCREW JACK AND RESPONSIVE TO AXIAL PRESSURE FOR PREVENTING RELATIVE ROTATION BETWEEN THE PARTS OF SAID SCREW JACK WHEN SAID BRAKE SHOES ARE REMOVED FROM SAID PRESSURE-APPLYING MEMBERS.