1982
NZ2513 : Beam pumping engine, Tees Cottage
taken 42 years ago, near to Low Coniscliffe, Darlington, England
Beam pumping engine, Tees Cottage
Woolf compound engine. Note the indicator on the low pressure cylinder and the string to drive it from the motion above. The indicator produces a graphic illustration of the action of the steam, allows diagnosis of faults and allows one to calculate the indicated horsepower (IHP).
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