Trevithick's boiler

Contributed by Cornwall Museums

THIS OBJECT IS PART OF THE PROJECT 'A HISTORY OF CORNWALL IN 100 OBJECTS'.

CORNISH MINES AND ENGINES. Also know as the Cornish boiler. Early boilers were kettle shaped with a fire underneath. Trevithick's boiler was tubular and had a fire tube within it thus increasing the heating surface and being tubular could withstand the higher pressure. These came into general use around 1812, the same year as Trevithick built a threshing machine for Trewithen. This example is c.1820.

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