Reference numberJS/3/232
TitleAtmospheric Rotative Steam Engine
DescriptionA general section of Francis Thompson's patent engine to work a rotatory motion on an improved plan, 1793
Front elevation, scale 1:24

Inscribed: This is a double acting engine two cylinders being combined and the pistons of both fixed to the same rod, one acts to make the up stroke the other for the down stroke. Cylinders 40 inches diameter 6 feet stroke made 18 strokes per minute = 216 feet motion per minute
Access statusOpen
Related materialThompson's patent is dated 25 May 1792 (No. 1884). A full description with illustration of the engine is given by Farey, Steam Engine 1827, 658-662
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