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 40
24 MODERN MOULDING AND PATTERN-MAKING. arms should be an easy fit when put in place, say one- sixteenth slack. Drill a hole in centre for hub- dowel, as shown at Fig. 12. Make a set of wooden patterns for all the different sizes of hubs required. Hubs should have a hard-wood dowel-pin in the bottom… … Fig. 13. the arms, leaving a margin of about between the edge of the plate and the pattern. The different sec- tions are connected by a strong bridge, as shown at B. Three or four of the sections should have a large and pointed dowel, or guide-pin (7, cast on bottom.
Founding · Patternmaking
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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