Telescopic shock absorber for motor car, 1967.
© Science Museum / Science & Society Picture Library
Shock absorbers are the devices in a car's suspension system which damp out oscillation when the vehicle's wheel pases over an irregularity in the road surface. Hydraulic dampers are now used, which consist of a piston sliding inside an oil-filled cylinder, with the flow of the oil controlled by spring-loaded valves. This example was made by Woodhead Manufacturing Co.