. 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., 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-oircl
. 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., 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 PATTERNS. 51 Fig. Set oflF the line ABC, fig. 56, equal in length to the circumfer-ence of the collar AB ; erect the perpendicular lines AD, BE andCH; set off on each side of BE the same number of equal dis-tances, as in the semicircle ACB; from the points draw lines par-allel to BE ; make BE equal to EB; make AD and CF equal toDA ; also, each of the parallel lines bearing the same figures as11, 22, 33, &c.; then a line traced through the points will formthe pattern. Edges to be allowed. 5S PBACJIICAL BULES PIPES. To describe a Pattern for a Pipe to Jit a FlatSurface at any Angle, as the side of the Poof ofa Building. Pig. 57.
Size: 1251px × 1997px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury18, bookdecade1870, booksubjectmetalwork, bookyear1876
