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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 (1910)

Hiscox, Gardner Dexter, 1822?-1908 · New York, The N. W. Henley publishing company · leaf 278

An illustration from 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, 1910, leaf 278
MINING DEVICES AND APPLIANCES. 2/7 … 719. ORE ROASTING FUR-NACE. The ore fed from the hopperat the top is drawn alternately inwardand outward on the partition hearthsof the roaster by revolving arms withblades inclined to draw each way onalternate floors. The hot gases enterfrom the flue at the top and are dis-charged with the ore at…

Mechanical movements

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