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 65
he points draw lines parallel to BE, as 11,22, &c. ; make BE equal to AC in fig. 53; make AD and CFequal to BE ; also, each of the parallel lines bearing the samefigures; make GI and HJ equal to CF; also, each of the paralk^ljines bearing the same figures as 11, 11, 22, 22, &c. A line… … Let the circle FE, fig. 55, equal large pipe or boiler; makeAB equal to the diameter of the collar or branch pipe, BE theangle required ; describe the semicircle ACB; divide the semi-oirclo into any number of equal parts; from the points draw linesparallel to BE, as 1, 2, 3, &c. FOR DESCRIBING…
Metal-work · Workshop recipes
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
