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 71
e line ABC into four equal parts,and erect the lines AD, 01, BF, 01, CE ; set off on each side of01, 01, the same number of equal distances as in one-half thesemicircle; from the points draw lines parallel to BF; make AD,BF and CE equal to HF ; make 01, 01 equal to BG ; also, eachof the parallel… … A3 a Let ABCD, fig. 61, be the given elbow ; draw the line AB atright angles to BC ; draw the line FC ; describe the semicircleAGB; divide the semicircle into any number of equal parts ; fromthe points draw lines parallel to BO, as 1, 2, 3, &c. FOR DESCRIBING PATTERNS. G3 Fig. 62, ^ tt.1 1 ) 11…
Metal-work · Workshop recipes
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