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 37
e of covering is obtained as follows: The length of thecourse BF is equal to the curve AB, and EG the breadth of it;join ED, and the lines 1, 2, 3, and 4, intersected thereby, will bethe half breadth (for the vertical BD) of the course at the corres-ponding lines on BF, through which points a line… … Let AB be the breadth of the course. Bisect it at B by theperpendicular CE ; make BE equal to the length of the arc fromthe base of the dome to the top of it (which may be found eitherby measurement or calculation); divide the semi-circle AOD intoany number of equal parts, and draw the lines…
Metal-work · Workshop recipes
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
