Dingey, Peter Spear. [from old catalog] · New York, J. Wiley & sons · leaf 110
of largediameters, for those under 8 ft. diameter a full ringis probably a better way, providing the ring can bestored so as to lie flat on its side, instead of standing onits edge; for, having no arms, a large ring standing edge-wise would soon become oval. The cores forming the groove are made in… … Fig. 143. m Cleat SHEAVEiS WITH WROUGHT IRON ARMS. PATTERN MAKING, 6g set one on top of the other after making the lower partof the mound with the segment. The lower hub core,B, through which there is a hole, should be set over thepin from which the segment has been swung around.This will locate…
Patternmaking
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-87-31.webp)
