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 239
shoulder is turned on the shaft, and the upper end ofthis hub is finished so as tolocate the vertical height ofthe shaft. The drag flask isrammed on a cast-iron moldplate, as illustrated in Fig.380. The flat disk drj^-sandcore is placed on this plateand rammed in, as illustratedin Figs. 380 and… … Fig. 383. Core Box for Arm Mold ring k and the radial bars. provide space for the two sprues L ring is finished to a bevel to fit the centering ring m, Fig. 384, sketch of the pattern for this ring is shown in Fig. 382. The mold plate j, illustrated in Fig. 381, can be used for bothdrag and cope…
Patternmaking
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-1041-661.webp)
