A practical workshop companion for tin, sheet iron and copper plate workers : containing rules for describing various kinds of patterns used by tin, sheet iron and copper plate workers : practical geometry, mensuration of surfaces and solids, tables of the weights of metals, lead pipe, etc., tables of areas and circumferences of circles : japans, varnishes, lackers, cements, compositions, etc., etc., etc. (1876)
Blinn, Leroy J · Philadelphia : Henry Carey Baird & Co. · leaf 87
ide of HI the same distance as on each side of the lineFG in fig. 75, as 1, 1, 2, 2, &c.; a line traced through the pointswill form the piece to be cut out; when there is to be an edgeturned up, it must be allowed inside of the line traced. The samerule is applied to describe a pattern for a… … Describe a circle, three-quarters of an inch larger in diameterthan a circle that will cut each corner of the article the top orcover is for; set off the squares from B to C ; take one half of thelargest square ; and \with B and C as centres, describe arcs Gand H ; then with A as centre, describe…
Metal-work · Workshop recipes
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
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