Contracting brake
I spotted this a few weeks back on a visit to Brooklands Museum. It's a contracting drum brake fitted to a 1930s racing car. Unlike most brakes instead of the wheel cylinder pushing the shoes out to contact the inside of the drum - this pulls the two ends of a brake band together to grip the outside. I suppose the advantages were it had a far greater self wrapping effect than shoes and a bigger area of friction material.
Contracting brake
I spotted this a few weeks back on a visit to Brooklands Museum. It's a contracting drum brake fitted to a 1930s racing car. Unlike most brakes instead of the wheel cylinder pushing the shoes out to contact the inside of the drum - this pulls the two ends of a brake band together to grip the outside. I suppose the advantages were it had a far greater self wrapping effect than shoes and a bigger area of friction material.