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 89
71 GLOBE-VALVES. their shape, and can be drawn from the sand more easily. MOULDING. Globe-valves may be cast in almost any position, — either vertically or horizontally, — and some moulders even prefer to set them on an angle. A very good method of casting large sizes is shown at Figs. 68 and 69,… … Fig. 68. tion the bottom section of the flask, shown in Fig. 68, fill it in, and mould it level with the top; turn it over, and make the parting at iV". Then set the other half of the pattern in place, put on the cope flask, set the feed-gate and riser-pins, fill it in, and ram it np in the…
Founding · Patternmaking
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
