Working model (scale about 1:8) of a double-acting beam engine with sun and planet motion; steam is distributed by a cock.
Working model (scale about 1:8) of a double-acting beam engine with sun and planet motion, c.1800. This engine incorporates Watt's separate condenser (patented in 1769) and other features including an air pump, parallel motion, and the sun-and-planet gear by which means the engine turned a flywheel. By 1800, when Watt and Boultons partnership ended, 451 engines had been built of which 268 were rotative. By the end of 19th century, the steam engine had become the main source of power for industry and transport.
Model of rotative steam engine with sun and planet gearing, scale 1:12, made by an unidentified modelmaker, United Kingdom, 1795-1805
Circular saw component for Boulton and Watt condensing engine, a wooden element with a number of areas for attaching parts. With an attachment at the top edge, made of metal with a circular wheel with a serated edge.
Wheel component for Boulton and Watt condensing engine. A six spoked wooden wheel with some notches/ damage. A circular pin hole in the middle.
Component for Boulton and Watt condensing engine. A wooden element with holes at each end, possibly a handle.
