. 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., Eie;t the line DC; make FD equal to oue-half the lengta ofthe boiler bottom before the edge is turned; describe the circleIIDI one-eight of an inch larger in diameter than the breadth ofth
. 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., Eie;t the line DC; make FD equal to oue-half the lengta ofthe boiler bottom before the edge is turned; describe the circleIIDI one-eight of an inch larger in diameter than the breadth ofthe bottom; let FG be three-eights of an inch; then apply thecorner of the square on the line AB, allowing the blade to cut thecircle at I and the tongue at the point G; draw the lines GB, BH,also the lines GA, AH; allow one-eight of an inch for an edge,as shown by the dotted lines, the cover will be the same size asthe bottom or pit. 76 PKACTICAL KULES FLANGE. To describe a Pattern for a Flange for a Pipethat goes, on the Roof of a Building^ asfg. 59. Fig 74. Fig. Let ABC, fig. 74, be the pitch of the roof; make DE equal totne diameter of the pipe ; describe the circle FG ; make FG thesame in diameter as the pipe ; draw the line FG ; set off on theline FG any number of equal parts; from the points draw lines atright angle to FG as 1, 2, &c. FOR DESCRIBING PATTERNS. 77 Pig. 76.
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Keywords: ., bookcentury18, bookdecade1870, booksubjectmetalwork, bookyear1876
