Modern moulding and pattern-making : a practical treatise upon pattern-shop and foundry work, embracing the moulding of pulleys, spur gears, worm gears, balance-wheels, stationary-engine and locomotive cylinders, globe valves, tool work, mining machinery, screw-propellers, pattern-shop machinery, and the latest improvements in English and American cupolas (1885)
Mullin, Joseph P · New York : D. Van Nostrand · leaf 61
43 MOULDING LARGE GEAR-WHEELS. the arms, leaving a level and smooth bottom for segment of rim and teeth. Having done so, set pattern of seg- ment in position, and press it down hard enough to leave the impression of the ends of the teeth in the sand ; or, what is perhaps better, shake a little… … Fig. 33. it fall short, or overreach a little in the circumference, it can be adjusted by a slight change in the diameter of the wheel. Having thus decided on the correct position for it, we set the segment, and ram up the teeth, as shown at Fig. 33. Then draw it from the sand, and move it around…
Founding · Patternmaking
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
