Home instruction for sheet metal workers . iin. wide to one side only. This represents the patternfor one side of the gore, eightof which will be required tocomplete the ball, as it willcontain eight gores. When cutting the goresfrom sheet metal, place themso as to avoid waste, as inFig. 535, and after they arecut, pass them through the forming rolls in the direction of thearrow a until they conform to the stay B, Fig. 536, which repre-sents a reduced stay of half of the 10-in. ball, A C. When raising the gores the block, hammer and stake are usedas in the preceding exercise, being careful to
Home instruction for sheet metal workers . iin. wide to one side only. This represents the patternfor one side of the gore, eightof which will be required tocomplete the ball, as it willcontain eight gores. When cutting the goresfrom sheet metal, place themso as to avoid waste, as inFig. 535, and after they arecut, pass them through the forming rolls in the direction of thearrow a until they conform to the stay B, Fig. 536, which repre-sents a reduced stay of half of the 10-in. ball, A C. When raising the gores the block, hammer and stake are usedas in the preceding exercise, being careful to strike along the cen-ter indicated by the dotted line b c, Fig. 535, dressing out the. o - ?—i— —a 540. Edges of Gores for Soldering. 372 Home Instruction for Sheet Metal Workers buckles along the edges on the block and a round head raising gore pieces, they have a tendency to curl in theform of a circle, a c b, Fig. 536, which makes it necessary tograsp both ends at a and b, with c resting on the bench, press-ing a and b down until the proper curve is obtained, shown bythe dotted curve a b. By pressing a and b down it will be foundthat the curve through d e, Fig. 535, has a tendency to curve more than called for by thestay; therefore, care must be^*^?i taken not to raise the part d e too deep in the gore piece must con-form to the stay both ways,for, if they are not raised
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
