The pattern maker's handybook : a practical manual on patterns for founders, embracing information on the tools, materials and appliances employed in their construction (1887)
Hasluck, Paul N. (Paul Nooncree), 1854-1931 · London : C. Lockwood · leaf 99
iously. The illustration, Fig. 56, shows the prong made as it should be. A metal chuck is first prepared, and the steel prong, only roughly shaped, is driven into it. The central pip is turned up true on the lathe ; it it shaped conically, as shown. Two opposite sides of the prong are then made… … Fig. 57. Prong Chuck. Fig. 56. Prong. carpenter's chisel. Prongs of this shape hold the work m.ore firmly, and are not so Hable to split it as those having a straight wedged-shaped edge. Each prong holds at an independent place, and any tendency to split is distributed at two quite distinct points.…
Patternmakers · Patternmaking
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
