. Cyclopedia of architecture, carpentry, and building : a general reference work .... In Fig. 344 is shown an illustra-. Fig. 345. tion of a round finial which containsmoulds, the principles of which have already been described inthe preceding problems. The ball A is made of either horizontalor vertical sections. In Fig. 345 is shown how the moulds in a finialof this kind are averaged. The method of obtaining the true lengthof each pattern piece will be omitted, as this was thoroughly coveredin the preceding problems. First draw the center line A B, on eitherside of which draw the section of t
. Cyclopedia of architecture, carpentry, and building : a general reference work .... In Fig. 344 is shown an illustra-. Fig. 345. tion of a round finial which containsmoulds, the principles of which have already been described inthe preceding problems. The ball A is made of either horizontalor vertical sections. In Fig. 345 is shown how the moulds in a finialof this kind are averaged. The method of obtaining the true lengthof each pattern piece will be omitted, as this was thoroughly coveredin the preceding problems. First draw the center line A B, on eitherside of which draw the section of the finial, as shown by C D E. Theblanks for the ball a will be obtained as explained in the InstructionPaper on Sheet j\Ietal Work. The mould b is averaged as shown bythe line c f, extending same until it intersects the center line at //, r /representmg the stretchout of the mould obtained, as explained in the 340 SHEET METAL WORK 255 paper on Sheet Metal Work. Using h as center, with h f and h e asradii, describe the blank b°. In the next mould, c c, a seam is located in same as shown bythe dotted line. Then aver
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