An early control scheme for an air-water hydraulic accumulator system, c.1940

Copied from Hydraulik GmbH, Duisburg, Germany, C.1940

Gloucestershire Archives
Gloucestershire Archives

The first photo drawing illustrates the principles employed at the time by the company Hydraulik GmbH, Duisburg, using a mercury-filled level device to control the water level in a pressurised air-water hydraulic accumulator system.

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