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 104
92 THE SHEET-METAL WORKER'S GUIDE. Rectangular Base with a Circular Top. To describe a pattern for a tapering article, the base to be a rectangle, and the top a circle, to be in two sections. Draw the perpendicular lines d c (Fig. 94) ; draw the line a b at right angles to d c ; make c E equal to… … Fig. 94. top ; draw the lines a f and b g ; make c k equal to one-half of the shortest side of the base ; erect the line l g parallel to e c ; f and g as centres, with the radius k l, describe the arcs i and h ; draw the right-angled lines h b n and i a m ; set off B N and A M equal in length to c…
Sheet-metal work
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