Dingey, Peter Spear. [from old catalog] · New York, J. Wiley & sons · leaf 125
re sections of the round core-boxes for the hub cores, CD and DG. Plenty of diaughtshould be made on the inside of these two boxes ?X a a\the half round prints for the arms are shown at b b. The small bosses shown in Figs. 146 and 147 are usedin cope core-box. Fig. 140; the prints on these smallarm… … SWEEPING CONICAL DRUMS. PATTERN MAKING. A MACHINE FOR SWEEPING CONICAL DRUMS. DESIGNED BY THE AUTHOR. It may not be understood by some why a windingdrum is sometimes made conical instead of a straightcylindrical form, and it may not be entirely out of placehere to explain the reason, for the…
Patternmaking
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