Illustrated catalogue and general description of improved machine tools for working metal (1899)
Sellers, William, & co. [from old catalog] · Philadephia, Levytype company · leaf 310
centre-box itself, and terminates on itsupper part on a flat surface upon which rests a set of steel plates with hard steelconical rollers. Upon the top plate is balanced a casting which carries a semi-cylindrical projection upon its upper surface, that fits into a corresponding con-cavity in the… … The centre-box is suspended from the top cap by eight bolts, thus throw-ing the entire weight of the table and balanced load directly upon the pivot centre(Fig. 2). A layer of wood packing is interposed between the top cap, arm, andthe centre-box, which may be varied in thickness to adjust the…
Machine-tools · Machinery
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