or even an annular emery piston is provided with a downwardly opening valve held up The shell contains sixty rolls, no two of which are in line or polishing wheel. For work of this kind, the machine we by a spring. This valve allows any water that may escape with each other, and as the journal… … from a single piece of sheet metal, the corrugations of which EMEEY BAUD POLISHING MACHIHE. extend alternately from opposite sides, so as to form a tor- A. W. COATES ft CO.'S WATEE ELEVATOB. tuous passage for the liquid, has been patented by Mr. John The bands used are endless, and usually of…
Iron · Patents · Emery · Railroad · Patented · Scientific American · American supplement · Steam roads · Cast Iron · Public works · Sheet iron · Emery wheel · Steam engine · Sewing machine · Ice cave
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