tion, and pound; on screws of any other material than iron, ranged with a collar, H, onthe sliding spindle that renders the treadle a much better agent for impart- and all other screws of iron except wood screws, 35 the auger can be set to bore a hole of any depth by ing the power applied toit. We… … factures of steel, or of which steel shall be a com- ponent part, not otherwise provided for, 35 per cent In the perspective view (Fig. 1) so many pulley arms, ad valorem—provided that all articles partially man- pass of the machine here shown (some six feet square) and other parts not belonging to…
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