Woodwork for secondary schools; a text-book for high schools and colleges, prevocational and elementary industrial schools (1916)
Griffith, Ira Samuel, 1874-1924 · Peoria, Ill., Manual Arts Press · leaf 354
Fig. 560. Jig for Shaping SpurGear Teeth. PATTERN MAKING. 349 teeth. Small gears are cast in blanks, Fig. 562, and theteeth machined. … Fig. Sol. Sandpapering Gear Teeth on Lathe. 291. Split Patterns; Dowels.—For the convenienceof the molder many patterns are split, or parted, in such a way as to make it easyto withdraw them fromthe mold. The two partsare jointed together anddoweled. The dowel-pinsare used to center splitpatterns…
Woodwork (Manual training)
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