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 96
ES 73 Ax\ will be one-half the pattern required. By continuingto the right, say, the arc AA, and setting off on it thesame above equal distances AB, BC, etc., and proceedingin exactly similar manner, the other half-pattern can bedrawn to complete the pattern required. To describe a Pattern for ci… … . Fig. 87. circle CDE ; divide the semicircle into any number of equalparts; from the points draw lines parallel to EB, as 2, 3,4, etc. 74 TIX, SHEET-IRON AND COPPER-PLATE WORKER. Then set off the line ABC (Fig. 87) equal in length tothe circumference of the cylinder CE (Fig. 86) ; erect…
Metal-work
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