Pattern making and foundry practice; a plain statement of the methods of wood pattern making, as practiced in modern pattern shops, with complete instructions for sweep work and notes on foundry practice, together with numerous drawings taken from actual patterns .. . ria fie ffd7f of f-rnisiheS paHeitt slides, projections, etc., that may be required bythe nature of the work. A rather neat piece ofwork is a double-flanged elbow for a steam pipe,as shown in Fig. 88. Assuming this to be for asmall pipe, say 4-inch, it becomes a simplepiece of lathe work. Having made a proper AND FOUNDRY PRACTICE
Pattern making and foundry practice; a plain statement of the methods of wood pattern making, as practiced in modern pattern shops, with complete instructions for sweep work and notes on foundry practice, together with numerous drawings taken from actual patterns .. . ria fie ffd7f of f-rnisiheS paHeitt slides, projections, etc., that may be required bythe nature of the work. A rather neat piece ofwork is a double-flanged elbow for a steam pipe,as shown in Fig. 88. Assuming this to be for asmall pipe, say 4-inch, it becomes a simplepiece of lathe work. Having made a proper AND FOUNDRY PRACTICE 127 working drawing (Fig. 89) for determining the sizeof the parts to be made, prepare a piece of materialof suitable dimensions from which to turn out aring, which should be a perfect semicircle in. cross-section, as shown in Fig. 90. This ring isthen cut into quarters, two of wliich make theprincipal part of the pattern. Next turn up twopieces (see Fig. 91) in two parts each. These, 128 PATTERN MAKING when doweled to the quarter circles alreadymentioned, make the desired pattern, as shown
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicagofjdrakeco
