Example of "Bradford" Adjustable Piston Valve Ring

SMG00268537

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SMG00268537
Science Museum Group
© The Board of Trustees of the Science Museum

Example of "Bradford" Adjustable Piston Valve Ring, type "C", No.52635, (Watson's Patent), with key, mounted on wood base

Details

Category:
Motive Power
Object Number:
1936-32
credit:
United States Metallic Packing Co. Ltd.