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James Gourlay
Colin Macray Jackson
George Kirkpatrick Johnstone
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Publication of GB191308321ApublicationCriticalpatent/GB191308321A/en
8321. Gourlay, J., Jackson, C. M., and Johnstone, G. K. April 9. Combined fluid - actuated and mechanical gears.-In a gear wherein the main valve acts as an auxiliary valve and is provided with auxiliary steam and exhaust ports C, D controlled by an auxiliary valve working on the back of the main valve, the valve-casing ends are provided with needle valves F which enter the exhaust ports and control the stroke of the valve.
GB191308321D1913-04-091913-04-09A Steam Distributing Valve for Direct-acting Steam Pumps.
ExpiredGB191308321A
(en)