Pattern making; a practical treatise for the pattern maker on wood-working and wood turning, tools and equipment, construction of simple and complicated patterns, modern molding machines and molding practice (1921)
Ritchey, James, Monroe, Walter W. (Walter William), b. 1869 · Chicago, American technical society · leaf 156
c7 /f Fig. 251. Views of Live Steam-Port Core Box PATTERN MAKING 139 GEAR WHEELS Accurate Teeth Required^ In this special class of pattern work,the greatest accuracy and care must be taken, not only in buildingup the rim of the wheel, but in fitting and placing on the rim theblocks out of which the… … Fig. 252. Bore and Live Steam-Port Core Box aa Arranged forSmall Cylinders wortliless, the time lost in chipping and filing for the purpose ofcorrection being too great to allow the use of such a pattern. Teeth Machine Cut It is common practice in some patternshops to build the pattern with the…
Patternmaking
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