A history of the growth of the steam-engine . nder, and J the pump, which is seen tobe double-acting. There are two pairs of engines andpumps, working on cranks, set at right angles, and turninga balance-wheel seen behind them. 6r is the feed-pumpwhich supplies water to the boiler, If the air-chamber whichequalizes the water-pressure, which reaches it through thepipe, I J. IT is the feed-water tank, under the driversseat, Zi, which, with the engines and boiler, are carried onthe frame, MM. The fireman stands on the platform, N^When it is necessary to move the machine, an endlesschain connects
A history of the growth of the steam-engine . nder, and J the pump, which is seen tobe double-acting. There are two pairs of engines andpumps, working on cranks, set at right angles, and turninga balance-wheel seen behind them. 6r is the feed-pumpwhich supplies water to the boiler, If the air-chamber whichequalizes the water-pressure, which reaches it through thepipe, I J. IT is the feed-water tank, under the driversseat, Zi, which, with the engines and boiler, are carried onthe frame, MM. The fireman stands on the platform, N^When it is necessary to move the machine, an endlesschain connects the crank-shaft with the rear-wheels, andthe engine, with pumps shut off, is thus made to drive thewheels at any desired speed. A self-propelling engine by the Amoskeag Company PORTABLK. AND LOCOMOTIVE ENGINES. 363 had the following dimensions and performance : Weight, 4tons ; speed, 8 miles per hour ; steam-pressure, 75 poundsper square inch ; height of stream from 1^-inch nozzle, 225feet; If-inch nozzle, 150 feet; distance horizontally, 1^. 364 THE STEAM-ENGINE OF TO-DAY.
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Keywords: ., bookcentury1800, bookdecade1870, bookidc, booksubjectsteamengines
