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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 321

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 321
/, e, andheld against the wheel, the results of the process being collected in abox for future operations. Diamonds with flaws or imperfections are sawed asunder or split, thelatter (shown at A) being a speedy but risky operation, requiring greatjudgment in determining the plane of cleavage and… … TEXTILE AND MANUFACTURING DEVICES, ETC. 321 831. DIAMOND CRUSHER AND MORTAR. Diamondsfor the use of the lapidary are crushed in a mortar, which consists of a cyhndrical box, a, and a pestle, h, both madeof hardened steel. A small rough diamond isplaced in the mortar, and the pestle drivendown by a…

Mechanical movements

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