Brake shoe grinding jig

A jig for use in grinding brake shoe linings of brake shoes having pivot means at one end, which engage respectively spaced pivot pins in the brake drum, a turntable having central swivel means, mounting means on the turntable, means for radially adjusting the mounting means relative to said swivel means, a pair of pivot pins in fixed spaced relationship and provided on the mounting means, each said pin engaging, in use, with the pivot means of one of the brake shoe linings to be ground, a support element on the turntable and diametrically opposite said mounting means, a plurality of angle setting members of different dimensions and each corresponding to a particular brake drum assembly, said members being individually mountable on said support element whereby the ends of the brake shoes opposite to said mounting means abut the opposite sides of the angle setting member mounted on said support element, a plurality of distance setting members of different dimensions and each corresponding to a particular brake drum assembly, means on the turntable for individually mounting a selected one of said distance setting members, said radial adjusting means being adjustable to abut said mounting means against the distance setting member mounted on the turntable, for pre-setting the radial position of said mounting means.

Apparatus for grinding brake shoe linings each having pivot means at one end, said apparatus comprising a body, rotary grinding means on the body, drive means for rotating the grinding means, guide means on the body, a carriage reciprocable along the guide means towards and away from the grinding means, a turntable rotatably mounted on the carriage, mounting means on the turntable, a pair of pivots on the mounting means for engagement with respective means of a pair of brake shoes to mount the shoes pivotally on the turntable for relative angular movement, the mounting means being radially adjustable on the turntable, angle setting means on the turntable and diametrically opposite said mounting means, said angle setting means defining an abutment of variable width whereby the ends of the brake shoes opposite to said mounting means abut opposite sides of the abutment.