Self-adjusting drum brake

摘要

A leading trailing drum brake with an improved strut and adjusting pawl mechanism. The adjusting pawl comprises a single piece which is mounted in a shaped aperture within one of the brake shoes to provide a structure which can be easily assembled. The pawl has an arm which contacts the strut in an off-set position from the longitudinal axis of the strut and applies a force to the strut parallel to its longitudinal axis.