Adjustable geared cam and roller brake shoe actuator

Claim 1

A BRAKE ASSEMBLY INCLUDING A STATIONARY BRAKE SHOE CARRIER AND A ROTATABLE BRAKE DRUM, A PAIR OF ARCUATE BRAKE SHOES EACH HAVING A FIXED PIVOTAL MOUNTING AT ONE END UPON SAID CARRIER AND BEING MOVABLE ABOUT SAID PIVOTED END FOR MOVEMENT TOWARDS AND FROM SAID BRAKE DRUM, ACTUATING MEANS CONNECTED TO THE OTHER END OF EACH BRAKE SHOE AND OPERABLE FOR URGING SAID SHOES TOWARD SAID DRUM INTO BRAKE ENGAGED POSITION, MEANS FOR MOVING SAID SHOES AWAY FROM SAID DRUM INTO BRAKE RELEASED POSITION, SAID ACTUATING MEANS INCLUDING AN S-SHAPED ACTUATING CAM PIVOTED UPON SAID CARRIER AND HAVING TOOTHED SURFACES, CAM FOLLOWERS EACH HAVING A TOOTHED SURFACE ENGAGING ONE OF SAID ACTUATING CAM SURFACES, MOUNTING MEANS ADJUSTABLY PIVOTING EACH CAM FOLLOWER UPON SAID OTHER END OF ONE OF SAID BRAKE SHOES, SAID MOUNTINGG MEANS INCLUDING A PAIR OF SPACED BEARING SUPPORTS, AXLES EACH MOUNTED IN AND EXTENDING BETWEEN SAID BEARING SUPPORTS ON ONE OF SAID BRAKE SHOES, AN ECCENTRIC FIXED ON EACH AXLE, EACH CAM FOLLOWER BEING JOURNALED UPON AN ECCENTRIC, MEANS FOR LOCKING AT LEAST ONE OF SAID AXLES IN A ROTATIONALLY ADJUSTED POSITION IN ITS BEARING SUPPORTS WHEREBY TO ADJUSTABLY VARY THE SPACING OF SAID AXLES FROM EACH OTHER.