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 .. . is now illustrated which,when properly made, is a simple matter; yetbefore the reasonable solution of this problem wasfound, it had cost the firm doing the work alarge sum of money. The problem was to casta triple locomotive chime whistle, having threeseparate compartments of different lengths in thebell, and three chambers for s
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 .. . is now illustrated which,when properly made, is a simple matter; yetbefore the reasonable solution of this problem wasfound, it had cost the firm doing the work alarge sum of money. The problem was to casta triple locomotive chime whistle, having threeseparate compartments of different lengths in thebell, and three chambers for steam in iho base. 118 PATTERN MAKING This pattern was first made, or rather at-tempted, and some three or four whistles werecast from it. It was so compHcated a piece of work that an ordi-nary moulder couldnot put it togetherand get a mouldfrom it; in conse-quence it had alwaysto be taken to thefoundry by the pat-tern maker. Thefoundry made alabor charge of $ this work, inaddition to the weightof the brass, for eachand every whistlecast. Having de-cided that some im-provement could bemade in this pattern,it was sent to theshop and remodeled and some slight improve-ments were made. However, it yet remained avery unsatisfactory piece of work. It was given. AND FOUNDRY PRACTICE 119
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicagofjdrakeco
