. Appleton's dictionary of machines, mechanics, engine-work, and engineering. high-pressure engine, with the parts as usually constructed for the admission and emission of the rod of the piston which traverses in this cylinder is prolonged and attached to the plunger P of a double-acting pump. The arm A \s fastened to the middle of the piston-rod, and strikes the tappits or nuts on the valve- PUMPS, STEAM. 539 rod at each end of the stroke, in order to change the position of the steam-valve and admit steam toalternate sides of the piston. The necessary reciprocating motion of the pum
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. high-pressure engine, with the parts as usually constructed for the admission and emission of the rod of the piston which traverses in this cylinder is prolonged and attached to the plunger P of a double-acting pump. The arm A \s fastened to the middle of the piston-rod, and strikes the tappits or nuts on the valve- PUMPS, STEAM. 539 rod at each end of the stroke, in order to change the position of the steam-valve and admit steam toalternate sides of the piston. The necessary reciprocating motion of the pump-plunger is thus producedin a very simple way, with the least possible amount of friction and loss of power. The brief space afforded in a notice of this description, will only allow of a glance at the mechanicalpeculiarities of this machine, designed to overcome the difficulties incident to the direct application olsteam, without availing of the controlling power of the crank for regulating the stroke nor of the ec-centric for producing the proper motion of the steam-val
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
