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 99
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… … the other. Join BE and CF, and produce the lines ELBOWS. 77 until they meet in O; then if OC be produced until it isequal to OB, viz., to I, and IB be joined, it will be evidentthat OIB is the elevation of a cone placed obliquely on thelower cylinder, and which is cut off at BC and EF. Now draw any…
Metal-work
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