. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . ses, high speed steel. Visits of Inspection.—General jobbing shop, steamforge shop, drop forge shop, rolling mill. EXERCISE NO. 1 Stock—Norway Iron—y2 x %—Convenient length. Explanation.—One end of the stock is to be drawnuntil a length of 5 or more is %x%; 5 of the drawnportion is then to be cut off on the hardie end, the cut endsquared. The finished piece, A (Figure 301), must be smooth,true to s
. Sheet metal workers' manual; a complete, practical instruction book on the sheet metal industry, machinery and tools, and related subjects, including the oxy-acetylen welding and cutting process . ses, high speed steel. Visits of Inspection.—General jobbing shop, steamforge shop, drop forge shop, rolling mill. EXERCISE NO. 1 Stock—Norway Iron—y2 x %—Convenient length. Explanation.—One end of the stock is to be drawnuntil a length of 5 or more is %x%; 5 of the drawnportion is then to be cut off on the hardie end, the cut endsquared. The finished piece, A (Figure 301), must be smooth,true to size, square in section and straight. Operation.—Beginning near the end of the stock, strikeevery other blow on a given face, and the alternate blowson one of the adjoining faces. Occasionally turn thework so that the two faces previously on the anvil maybe brought under the hammer. HAND FORGING AND WELDING 399 To mark the work where it is to be cut hold the squareto the edge of the hardie across which slide the stockas indicated by the arrow, B, until its end is opposite the5 mark on the square. Put down square, take up ham-mer, and strike a light blow. After this cut on all four. ANVIL FIRST \dr*\ -/SLT^/ SECOND POSITION B\ \ <-7 /A POSITION ANVIL. 1 T^ ANVILFigure 301.—Exercise No. 1. sides, C. Break the piece off by bringing the cut over theedge of the anvil, D, and deliver a blow on the end of thepiece. To square the cut end, first upset, E, and then drawdown to size. Caution.—If it is discovered that the stock is becom-ing diamond shaped, F, instead of square in section, ham-mer on the high sides, G. EXERCISE NO. 2 Stock—Norway Iron—y2 x y2—5 long. Explanation.—Stock to be upset to 3 in length. Thefinished piece, A (Figure 302), must be sound, must be 400 SHEET METAL WORKERS MANUAL square and uniform in section. True to size, straight, andsmooth. Operation.—The stock having been brought to a whiteheat, blows are to be delivered as shown by B. O
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