A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . Table, or Stosshcerd.—The diagrams, figs. 525, 526, and527, exhibit a plan, vertical section,and elevation of one of these tables,used in the Harz. The arbor, or greatshaft, is shown in section i)erpendieu-larly to its axis, at a. The emus orwipers are shown round its circum-ference, one of them having justicted on n. ORES, DRESSING These cams, by the revolution of the arbor, cause the alternating movements of a hori-zontal bar of wood, o, n, wh
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . Table, or Stosshcerd.—The diagrams, figs. 525, 526, and527, exhibit a plan, vertical section,and elevation of one of these tables,used in the Harz. The arbor, or greatshaft, is shown in section i)erpendieu-larly to its axis, at a. The emus orwipers are shown round its circum-ference, one of them having justicted on n. ORES, DRESSING These cams, by the revolution of the arbor, cause the alternating movements of a hori-zontal bar of wood, o, n, which strilves at the point w against a table d, b, c, u. This tableis suspended by two chains t, at its superior end, and by two rods at its lower end. Afterhaving been pushed by the piece, o, «, it rebounds to strike against a block or bracket lever p, q, serves to adjust the inclination of the movable table, the pivots q being pointsof suspension. The stuff to be washed is placed in the chest a, into which a current of water ore, floated onwards by the water, is carried through a sieve on a small 527 sloping table x, under which is con-cealed the higher end of the movabletable (/, b, c, u ; and it thence falls onthis table, diffusing itself uniformlyover its surface. The particles de-posited on this table form an oblongtahis (slope) upon it; the successivepercussions that it receives, determinethe weightier matters, and conse-quently those richest in metal,
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
