Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 106
verning principle underlyingall such operations. We have previously shown how tlie patternsare developed for simple flaring ware; in otlier words, how to 82 SHEET-METAL WORK 23 develop the frastum of a cone. The patterns for curved or anyother form of circular or hammered work are i^rodnced nxDon… … Fig. 16. Divide the quarter circle A C into as many parts as there arcsections required in the half s^^here (in this case three), and di-awhorizontal lines through the ball as shown. The various radii forthe patterns are then obtained by drawing lines through C 5, Z* c,and G A. Thus C h extended…
Architecture · Building · Carpentry
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