Dingey, Peter Spear. [from old catalog] · New York, J. Wiley & sons · leaf 109
se large arm core-boxes ; the result is, they arerammed apart, as shown, and then the poor core maker isaccused of using the core-box roughly. Just as in thecase of arm box for fly-wheels, so this box should bemade a little longer than is necessary for the present job,so that the end, K, can… … JFig. 12 G.
Patternmaking
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