directed below or above the fire. If all the.air be directed be- BEAM PUMPING ENGINE. be comparatively cool with less increase of volume, and therewill be a diminution in the power of the engine. This dif-ference of power serves as a very effective mnans of regula-ting the speed of the engine, and… … the crank passes. The engine is single acting, the air press-ure acting on the under side of the piston only ; the air is ad-mitted from the heater by means of a puppet valve, E, movedby a cam, at Q, on the main shaft. There is a similar valve,also moved by a cam, which opens from the cylinder to…
Patents · Improved · Cylinder · Air · Scientific American · Consists · Steam engine · Sewing machine · Hot air · Versed sine · Ten minutes · Takes place · Address munn · Horse power · Patent office
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