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 ... (1907)
Mullin, Joseph P · New York : D. Van Nostrand · leaf 90
GLOBE-VALVES. 69 At this stage of the proceedings, the pattern is taken out of the lathe, and the screw which holds the pieces together may be removed, and the halves taken apart. The flanges may now be fitted in place, and held firmly with one or more screws, as shown at Q-. When this has been… … Fig. 67. We now take out the pattern from the lathe, and at right angles with the parting; parallel with the cen- tre line of the body, we cut off the side of the sphere and also work out the recess to receive the tenon F, and in that manner put on the branch, as shown in the figure. At Fig. 67 we…
Founding · Patternmaking
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
