. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. closed tight. Steam is then introduced at a high pressure—100 to150 lbs. per square inch. This heat coagulates the sap and drives themoisture from the lumber, when creosote oil is pumped into the cyl-inder and saturates the wood. The oil is then driven out of thecylin
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. closed tight. Steam is then introduced at a high pressure—100 to150 lbs. per square inch. This heat coagulates the sap and drives themoisture from the lumber, when creosote oil is pumped into the cyl-inder and saturates the wood. The oil is then driven out of thecylinder by the steam pressure and heat and the lumber withdrawn. 330 ENGINEERING AND CONSTRUCTION, 853. ELECTRICALLY DRIVEN HAMMER. Power is trans-mitted to the crank shaft, A, by means of a flexible shaft, and a recipro-cating motion isgiven to thehammer head,C, by the pitmanB. As the rota-tion of shaft Ais very rapid the succession of blows upon the chisel is so rapid as to be almost con-tinuous. A small balance wheel on the end of shaft A absorbs partof the shock of the impact and produces smooth running. A plunger,D, is free to slide within the hammer head, but is kept from strikingpoint F by the coil spring at E. When the pitman moves to the rightits right-hand end presses against the plunger at G, which in turn com-municates motion to the hammer head through spring E, and the chiselis struck a sharp blow. After the blow, the hammer head is returned by the movement of thepitman to the left, by means of pin g. This pin is attached to hammer-head C, but is entirely independent of the plunger D. The end of thepitman is slotted to receive pin g, and the slot is of such a length th
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Keywords: ., bookauthorhiscoxga, bookcentury1900, bookdecade1910, bookyear1910
