Stationary steam engines, simple and compound; especially as adapted to electric lighting purposes . es, but differs from them in its details and in its pro-portions, somewhat, and, especially, in the form of its valve,and in the devices intermediate between governor andvalve. In this engine, the piston valve is used, com-bined with a double port, such as was first used by Allen inthe locomotive slide valve. These details are illustratedfurther on. The engine, as a whole, will be first described STEAM ENGINES FOR The accompanying engraving present two perspectiveviews of the Armington & Sims E
Stationary steam engines, simple and compound; especially as adapted to electric lighting purposes . es, but differs from them in its details and in its pro-portions, somewhat, and, especially, in the form of its valve,and in the devices intermediate between governor andvalve. In this engine, the piston valve is used, com-bined with a double port, such as was first used by Allen inthe locomotive slide valve. These details are illustratedfurther on. The engine, as a whole, will be first described STEAM ENGINES FOR The accompanying engraving present two perspectiveviews of the Armington & Sims Engine, of the styles com-monly used in driving electric light machinery. The bedis seen to be of the kind already described in the accountof the Porter-Allen engine, heavy, solid, stiff, yet neat, andeven graceful, taking the bending stresses of the guides atits upper surface, and insured against twisting strains by thebox form of its section. Two main pillow blocks, in thefirst engine illustrated, carry its steel crank-shaft, and sup-port the two wheels, one of which is a balance wheel, and. Crank-pin and Wiper. the other of which is the pulley, from which the engine isbelted to its work. The steam cylinder is overhung, andthe exhaust pipe is carried down below the floor, clear ofthe foundation, which latter has a minimum extent, andcost, while amply heavy, and is long and strong enough tocarry the engine steadily. In some cases, the frame is madewith but one pillow block, and the crank is overhung ; theplan here illustrated is, however, a better one when the en-gine is to be driven up to the now usual speeds of suchmachines. The journals are all large, and carefully calculated forthe speeds and pressures adopted. The designers make use
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectsteamen, bookyear1890
