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Aviation rings in the old : five stages in one complete action of British type sleeve valve, showing how ports are opened and closed
Five photographs demonstrate the action of a British type sleeve valve, showing how ports are opened and closed while the engine is running.
5.5 x 20.8 cm
black and white
- still image
- These materials are either in the public domain, according to U.S. copyright law, or permission has been obtained from rights owners. The digital version and supplementary materials are available for all educational uses worldwide.
- The Janet A. Ginsburg Chicago Tribune Image Collection
- Chicago Sunday Tribune (May 21, 1939), p. 11