Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 235
Ficr. 123. 187 116 SHEET METAL WORK In large kettles of this kind, the length of the pattern is guidedby the size of the sheets in stock, and if it was desired that each ringwas to be made in 8 parts then the respective circle in plan fromwhich the stretchout is taken would be divided into 8 parts,… … Fig. 124. PROBLEMS FOR WORKERS IN HEAVY METAL. AA^liile all of the problems given in this course are applicable todevelopments in heavy metal as well as in that of lighter gauge, thefollowing problems relate to those forms made from boiler plate. When using metal of heavier gauge than number 20,…
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