Barrows, F. W. (Frank Wilson), b. 1853 · New York, N.W. Henley Pub. Co. · leaf 138
n the rim square across and puton the core prints, each one by itself. In this way eachsingle print is formed of one piece of wood, which mightnot be the case if they were cut out of the rim. The core-box is shown at Fig. 44, and should be fittedvery nicely to the print in order to have the cores… … Fig. 44- support and also to keep it from becoming jammed be-tween the teeth. There are several styles of sprocket-wheels made with asingle row of teeth, one of the plainest of which is shownin Fig. 45, a being a section of the rim showing projection 138 PATTERNMAKING. of teeth, b a cross section…
Patternmaking
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