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 118
w any two lines, as EF and GH, parallel andequal to each other ; bisect these lines as in the points 1and K, and bisect IK as in L; from L as a centre, draw acircle cutting the ellipse in four points, i, 2, 3, 4; now Lis the centre of the ellipse ; but join the points i, 3, and 2,4; and bisect… … F;g. 114. To find the Radius and Versed Sine for a given Frustumof a Cone.—Multiply the slant height by one-half the diam-eter of the large end, and divide the product by one-halfthe difference of the two ends, and the quotient is the ra-dius. The versed sine is found by multiplying the altitudeby…
Metal-work
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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