Plaster copy of Bust of James Watt, by Sir. Francis Chantrey, 1815 Plaster copy of Bust of James Watt 1815
Fragments from the plaster Bust of James Watt, by Domenico Brucciani, United Kingdom 1815 Fragments from the plaster Bust of James Watt 1815
1 of 4 demonstration models of engines. Model of Horizontal Gas Engine, Four stroke engine, sectioned with three poppet valves, gas in let and exhaust. The valves should be driven from a crankshaft at the back which is turned by screw gears from the crankshaft. Demonstration model of valve mechanism of a four stroke gas engine
Small bag of "Newtempheit" heat insulating material Small bag of "Newtempheit" heat insulating material
Square piece of plate with Leroy's patent non-conducting composition for boilers Square piece of plate with Leroy's patent non-conducting composition for boilers