E/MJ : engineering and mining journal . ted. 1916, by W. F. Schaphorst. tMecnanical engineer, Woolworth Building. New Tork City. November I. L916 ENGINEERING AND MINING JOl RNAL ii iiiiiniiiiiiiiiii it iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiuiuiiiiini i run in™ i;i:r: ii.:. ?: nam miinnnnDlM ett&iiEs of MMBmi^ dirndl SmmeMnmn - A New Type Caipaiadnirag MnH A grinding mill thai is designed to reduce ductile metalin a flaky condition is covered by 1. S. Patent No. ,-757, granted on Aug. 15, 1916, to Thomas J. Lovett, ofChicago. This grinding mill consists essentially of twohorizontal pl
E/MJ : engineering and mining journal . ted. 1916, by W. F. Schaphorst. tMecnanical engineer, Woolworth Building. New Tork City. November I. L916 ENGINEERING AND MINING JOl RNAL ii iiiiiniiiiiiiiiii it iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiuiuiiiiini i run in™ i;i:r: ii.:. ?: nam miinnnnDlM ett&iiEs of MMBmi^ dirndl SmmeMnmn - A New Type Caipaiadnirag MnH A grinding mill thai is designed to reduce ductile metalin a flaky condition is covered by 1. S. Patent No. ,-757, granted on Aug. 15, 1916, to Thomas J. Lovett, ofChicago. This grinding mill consists essentially of twohorizontal plates, the lower one made to rotate and theupper one to reciprocate. Ore is fed through the upperone and is subjected to the mot ions of the two plates. Theresult is a torsional rubbing action which tends to rollup flaky metallic particles into pellets and thus effecitheir separation from the gangue. The under side of thelower plate is fitted with one member of a bevel gear,the other member of which revolves in a vertical THE LOVETT GRINDING MILL This is connected through shafting and gears to a pulley to which the power is supplied l.\ a belt. An eccentricon the shaft connects through a toggle joint to the uppergrinding member and thus imparts the reciprocating mo-tion. The details of the mill are shown in the accompany-ing illustration. Tlhe TUse off Floftataoim OaEs Some experiments on flotation oils have recently beenmade by C. Y. Clayton and C. E. Peterson, the resultsof which were published in the Augusl Bulletin of theSchool of Mines and Metallurgy of the University ofMissouri. A large number of oils were examined andthe general conclusions arrived at are. first, it seemsthat the oils that are miscible with water are the frothingoils, and theoretically, at least; the mis thai will give theephemeral, small-bubble froth will give the cleanesl con-centrates when compared with an oil thai forms a thick,stiff froth, but the recovery may be greater in 1case. To
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
