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 85
D COPPER-PLATE WORKER. the semicircle CDE; make CF and EH of equal length;with a radius equal to one-half the diameter of the largepipe, describe the arc FH; divide the semicircle into anynumber of equal parts ; from the points draw lines parallelto AC, as I, 2, etc. There must be an odd number… … f^ig- 79 and CF; set off on each side of BE the same number ofequal distances as in the semicircle, and from the pointsdraw lines parallel to BE, as i i, 2 2, etc.; make BE equal PIPES. 63 to AC in Fig. 77 ; make AD and CF equal to BE (Fig. 77);also, each of the parallel lines bearing the same…
Metal-work
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