determined and regulated with which the patternmaker has now to concern himself is ly modern and greatly improved device has come into gene- by pegs fitting into holes, provided in the first part, to re- represented in Fig. 67. It is called a flask,and is composed ral use. It is termed a snap… … ly; and as the pattern is made in halves, the top half lifts to such an expedient, because, wherever the bar passes, the with the sand in the cope. In some cases a screw is fixed the cope. Each part is simply a strong rectangular frame cope is damaged, and must be mended; and when a mold intothe…
Internet Archive · Public domain (published before 1931). Free to use for anything.
