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.
Trevithick's boiler
Contributed by Cornwall Museums
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Cornwall
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1820
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