get at with any ordinary wheel, or even an annular emery The shell contains sixty rolls, or polishing wheel. For work of this kind, the machine we these rolls, friction is decreased to the minimum, and no lu- bricants are required. The box and journal, also being of hardened steel, are very… … Aw NY An evaporating pan having a corrugated bottom stamped from a single piece of sheet metal, the corrugations of which EMERY BAND POLISHING MACHINE. extend alternately from opposite sides, so as to form a tor- A. W. COATES & C08 WATER ELEVATOR. tuous passage for the liquid, has been patented by…
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