The sheet-metal worker's guide : a practical handbook for tinsmiths, coppersmiths, zincworkers, etc., comprising numerous geometrical diagrams and working patterns, with descriptive text (1888)
Crane, W. J. E. (W. J. Eden) · London : Lockwood and Son · leaf 102
90 THE SHEET-METAL WOKKER's GUIDE. anglea to J a hihI k 3 ; also tlie Lues l e and m d at right angles to l j and m k. ... Edges to be aUowed. Square Base with Circular Top. To describe a pattern for a tapering article^ the base to he square and the top a circle^ to he in two sections. Erect the… … AB ; make a b equal in length to one side of the base ; make c d equal in length to one-fourth the circumference of the top, and draw the lines a c and b D ; c and d as centres, with a radius equal to one-half the difference of the two ends, describe the arcs i and h ; draw the right-angle lines i…
Sheet-metal work
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
