Dingey, Peter Spear. [from old catalog] · New York, J. Wiley & sons · leaf 79
Mow to get the Lines for Thread of a ^Vorm (< ..^^v … WORM WHEEL PATTERN. FA TTERN MAKING, 5 3 WORM WHEELS. THE WAY TO GET THE ANGLE OF TEETH, AND THE MAN-NER OF FASTENING THEM ON. A WORM-WHEEL pattern is not an easy thing to makeby any means; it is that kind of a job on which a goodman is apt to go astray. Figs. 107 and 108 represent a wheel to be…
Patternmaking
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