Brakes and wear compensating mechanism for brakes

Claim 1

A DISC BRAKE HAVING A WEAR COMPENSATING MECHANISM AND COMPRISING A ROTATABLE DISC, A FIRST PRESSURE PLATE MOUNTED ON ONE SIDE OF SAID DISC, A SECOND PRESSURE PLATE MOUNTED ON THE OPPOSITE SIDE OF THE DISC, EACH SAID PRESSURE PLATE HAVING A FRICTION ELEMENT FACING THE OPPOSED SIDE OF THE DISC, MEANS PIVOTALLY SUPPORTING SAID PRESSURE PLATES SO AS TO PERMIT THEIR RESPECTIVE FRICTION ELEMENTS TO FRICTIONALLY ENGAGE THE OPPOSED SIDES OF THE DISC, AN ACTUATING LEVER PIVOTALLY MOUNTED ON SAID SECOND PRESSURE PLATE, A TRUNNION BOX PIVOTED ON THE ACTUATING LEVER, A TIE ROD NON-ROTATABLY SECURED TO SAID FIRST PRESSURE PLATE AND PROJECTING BEYOND THE PERIPHERY OF THE DISC THROUGH THE TRUNNION BOX, THE PORTION OF THE TIE ROD PROJECTING THROUGH THE TRUNNION BOX BEING SCREW-THREADED, A NUT THREADED ONTO THE SCREW-THREADED PORTION OF THE TIE ROD IN ABUTMENT WITH THE TRUNNION BOX, A LATCHING MEMBER MOUNTED ON SAID LEVER FOR SLIDING MOVEMENT RELATIVE THERETO AND POSITIONED UPON MOVEMENT OF THE ACTUATING LEVER FROM ITS INOPERATIVE POSITION, BEYOND A PREDETERMINED AMOUNT, TO ENGAGE SAID NUT SO THAT UPON THE RETURN OF THE LEVER TO ITS INOPERATIVE POSITION THE NUT IS ROTATED ON THE TIE ROD TO SHORTEN THE LENGTH OF THE TIE ROD BETWEEN THE PRESSURE PLATES.