With its invention in 1902 by Louis Renault, the automobile drum brakes have become an integral part of any modern vehicle's braking system. Drum brakes have varied usage in automobiles and hence have seen remarkable change in their construction in terms of quality of raw materials and manufacturing process.
The usage of drum brakes began with their mechanical operation. Initially, these brakes were operated with rods or cables and levers. Gradually, this manual operation was replaced by oil pressure. This pressure in a small wheel cylinder and pistons was used to operate the shoes. Moreover, the drum brakes on the front wheels of cars were replaced by disc brakes. In modern vehicle, the drum brakes have become popular for their usage for hand brakes.
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