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 47
s theplan of the large end of the frustum, to V. The line OVwill pass through o\ the centre of the plan of the small 34 TIN, SHEET-IRON AXD COPPER-PLATE WORKER. end.; 00 will be the plan of the axis of the frustum, andOV the plan of the axis of the pyramid of which the frus-tum is a portion. Draw… … and meeting it in Q, and through O draw O Q perpen-dicular to XX and cutting xx in /. Join Q / and pro-duce it to intersect v V in V. Next make va, vb, vc, vd,equal to VA, A^B, VC, VD respectively ; join a, b, c, and^ to Y by lines cutting xx in points a b (/ and d; aa,bV, etc., are then the…
Metal-work
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