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 77
oints draw lines parallel to BH ;make BH equal to BH; make AD and CE equal to AN; also, eachof the parallel lines beairing the same number as 1,1, 2, 2, 3, 3, &c.;then a line traced through the points will form one of the sections;make DF and EG equal to EJ; then reverse section No. 1, andplace… … Aaay 6 5 4- 3 21 Let ABED, fig. 67, be the 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…
Metal-work · Workshop recipes
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
