m thisposition, the lever was made instantly to return to its originalplace, by the action of a weight. These levers being also fur-nished with handles, to enable the valves to be open and shutby hand, the apparatus was called the Hand Gear, the frameand pins, the Plug Frame. This mode of working… … 200 SMEATON—LEUPOLD. ing, by which its mode of action and the uses of its severalparts may be better understood. a is the boiler. t, the steam pipe. e, the steam valve. c, the Cylinder, into which the injection water is seen play-ing through the valve and pipe p. r, the piston. s, the snifting…
Steam-engines
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