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 .. . working drawing, which, as has already beenstated, must show the casting, the core and thecore prints. Fig. 27 shows a cross-sectionthrough the casting and core; this being the onlydrawing needed for making the pattern. Thispattern was made by gluing together pieces ofmaterial of ordinary size, as a solid block sufii- 64 PATTERN
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 .. . working drawing, which, as has already beenstated, must show the casting, the core and thecore prints. Fig. 27 shows a cross-sectionthrough the casting and core; this being the onlydrawing needed for making the pattern. Thispattern was made by gluing together pieces ofmaterial of ordinary size, as a solid block sufii- 64 PATTERN MAKING ciently large was not obtainable, and It was amatter of no little difficulty to secure a piece ofmaterial of sufficient diameter to turn up the. flange. It was also desirable that the patternshould be divided in the middle without rippingit through after turning it up. To accomplish • >
Size: 2388px × 1047px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicagofjdrakeco
