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Mechanical applicances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical mvements, powers and devices"; (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing company · leaf 281

An illustration from Mechanical applicances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical mvements, powers and devices";, 1917, leaf 281
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. b is a solid diamond-setcore drill. drill a, a 715. ASSAY ORE CRUSH-ER. A combination… … ELEVATION. 3rd Fireplace 716. ORE ROASTING FURNACE. Section of the Pearce turretfurnace in which a circular oven is heated by outside fires. With rabbles on arms from a central re-volving shaft constantlystir the ore and move itforward around the hearthto a discharge hopper.The plan and vertical…

Mechanical movements

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