. 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 . H Figure 317.—Exercise No. 17. 420 SHEET METAL WORKERS MANUAL EXERCISE NO. 18 Stock—Norway Iron—3 Pieces—TV diameter—6 long. Three links of a chain, shown in A, Figure 318, formthe finished piece. Operation.—Upset each end of the piece, taking oneleat for each end. Heat the piece in the center, cool. )rouqs Figure 318.—Exercise No. 18. v^ about 1% of each end and bend to the shape of theletter U, a
. 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 . H Figure 317.—Exercise No. 17. 420 SHEET METAL WORKERS MANUAL EXERCISE NO. 18 Stock—Norway Iron—3 Pieces—TV diameter—6 long. Three links of a chain, shown in A, Figure 318, formthe finished piece. Operation.—Upset each end of the piece, taking oneleat for each end. Heat the piece in the center, cool. )rouqs Figure 318.—Exercise No. 18. v^ about 1% of each end and bend to the shape of theletter U, as in JS. In scarfing the ends, place one end upon the sharpedge of the anvil, as in C, and striking light blows,swing the piece around, bringing the toe of the scarf toa thin edge. After one end is scarfed turn the pieceover and scarf the other in the same manner. Bend thescarfed ends over the horn of the anvil so they will lapas shown by D. Weld and finish two links each independent of theother and complete in itself. Bring third link to the HAND FORGING AND WELDING 421 form of D. Spread the ends in the direction shown byarrows and slip on the finished links. Apply the tongsas shown in E, close the ends of the link, and weld. Infinishing see that the links are of the same size and form. EXERCISE no. 19 Stock—Norway Iron—%xl—4% long. The hook as shown by A, Figure 319, is the finishedpiece.
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Keywords: ., bookcentury1900, bookdecade1910, bookidsheetmetalwo, bookyear1918
