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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 276

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 276
llrod by a pump. The drillis tipped with a steel ringstudded with black dia-monds, so that the drillmakes an annular cut bywhich cores may betaken out for examina-tion. The tailings of thedrill are washed to thesurface by the force ofthe water jet. 6 is a soliddiamond-set drill; a, acore drill.… … 27t> MINING DEVICES AND APPLIANCES.

Mechanical movements

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