Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 88
quired. Fig. 254 is a vertical section of a wooden blast machine ; A, A, are two simple working cyl-inders, in each of the pistons of which there are two valves. On the top of these cylinders there arevalves which lead to the regulator B, in which a piston moves that is connected by an iron… … The whole machine is fastened to substantial timbers, which rest upon a good foundation of hewn stones.These cylinders and the regulator, are from Si to 5 feet in diameter, and not often of more than 3 feetstroke. The cylinders are constructed of segments of circles cut out of li inch plank of dry…
Mechanical engineering · Mechanics · Engineering
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