. 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., 38 PKACTICAL EULES OCTAGON. To describe a Pattern for Tapering Octagon 2op orCover. Erect the perpendicular line GE, fig. 35 ; draw the line AB atright angle to GE ; make FE equal to the S
. 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., 38 PKACTICAL EULES OCTAGON. To describe a Pattern for Tapering Octagon 2op orCover. Erect the perpendicular line GE, fig. 35 ; draw the line AB atright angle to GE ; make FE equal to the Slant height of the ar-ticle, and draw the line CD parallel to AB; make AB equal Lalength to one of the longest sides of the base; make CD equalin length to one of the longest sides of the top, and draw thelines AG and EG, cutting the points AC and BD, G as a centre,with the radii GC and GA describe the arcs SO and PN ; set offQR, and LN equal to AB ; set off PQ, KA, BII and JL equalin length to one of the shortest sides of the base ; draw the linesPS, QT, RTJ, &c., cutting the centre at G. draw the lii es PQ,QR, ST, TU, &c. Edges to be allowed. FOB DESCEIBING PATTERNS. 80 Fig. 10 PEACTICAL ETJLES GUTTER MITER JOINTS. To describe a Pattern for a Miter Joint at Hightangles for a /Semicircle Gutter.
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Keywords: ., bookcentury18, bookdecade1870, booksubjectmetalwork, bookyear1876
