A practical work-shop companion for tin, sheet-iron, and copper-plate workers ... with numerous valuable receipts and manipulations for every-day use in the work-shop (1904)
Blinn, Leroy J. [from old catalog] · Philadelphia, H. C. Baird & co. · leaf 98
scribe the semicircle DEF ; divide one-half of thesemicircle into any rumber of equal parts; from the pointsdraw lines parallel to FH, as 2, 3, 4, etc. Set off the line ABC (Fig. 89) equal in length to thecircumference of the pipe DF ; divide the line ABC into PIPES. 75 four equal parts, and erect… … Fig. 89. HF (Fig. 88) ] make OI, 01 equal to BG (Fig. m ; also,each of the parallel lines bearing the same figures as 2 2,2 2, 3 3, 3 3, etc.; then a line traced through the pointswill form the pattern. Edges to be allowed. To describe the Form of a ^Tapering Piece ^ of Piping, toJoin Two Pieces of…
Metal-work
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