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 78
e given elbow; draw the line FC;make FM equal in length to one-half the diameter of the elbow,with F as a centre ; describe the arc KL ; divide the arc KL intothree equal parts; draw the lines FH and FI; also the line IH di-vide the section HK into two equal parts, and draw the line FG;draw the… … Set off the line ABO, fig. 68, equal in length to the circumfer-ence of elbow AB ; erect the linc3 AF, BD and CE; set off oneach side of the line BD the same number of equal distances as inthe semicircle ANB ; from the points draw lines parallel to BD as1,1, 2, 2, &c. ; make BD equal to BG;…
Metal-work · Workshop recipes
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
