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The Iron Age 1881-12-15: Vol 28 Iss 24

1881 Reed Business Information US

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A Review of the he Iron Age Published every Thursday Morping by DAVID WILLIAMS, No. 83 Reade Street, New York. Entered at the Post Office, New York, as Second-Class Matter. Hardware, Iron and Metal Trades. Vol. XXVIII: No. 24. New York, Thursday, December 15, 1881. 84°50 a Year, Including Postage. Single Copies, Zen Cenés. with a concentrated solution of nitrate of potash, the liquid being retained by a The machine shown in the accompanying | Shallow vessel in which the glass is placed. illustration #s intended to perform the opera-| 4 Platinum wire is dipped in a horizontal tion of pulverizing upon all sorts of hard | Position in the solution along the edges of materials without tho difficulties usually |*he glass. The wire is attached to one of attendant upon that process, and at an the poles of a secondary battery of 50 or 60 unusually rapid rate. It is specially adapted elements. The lines are traced by hand to work upon ores, rocks of all kinds, rolling | With the point of an insulated platinum wire mill fix, &e., and reduce them to a coarse or | Connected with the other pole of the bat- impalpable powder, as may bedesired. The| ‘ery. The parts of the glass covered with princi…

Citation

The Iron Age 1881-12-15: Vol 28 Iss 24. Reed Business Information US. 1881.