. Canadian foundryman (1921). eswhich might he in the metal will natur-ally go to the top on the two the two oxidized, dusty and dullmetals come together, they do not cutinto each other and knit together asthey should; they do not have sufficientfPuvHty to hold together against theslight kick which is apt to be causedby the core and incidentally the metal,which as we have said, is apt to con-tain all the impurities, does not majkea sound casting at the place of meet-ing, even though the casting had beengood otherwise. Had it been gated and poured fromthe two sides it would have been
. Canadian foundryman (1921). eswhich might he in the metal will natur-ally go to the top on the two the two oxidized, dusty and dullmetals come together, they do not cutinto each other and knit together asthey should; they do not have sufficientfPuvHty to hold together against theslight kick which is apt to be causedby the core and incidentally the metal,which as we have said, is apt to con-tain all the impurities, does not majkea sound casting at the place of meet-ing, even though the casting had beengood otherwise. Had it been gated and poured fromthe two sides it would have been betterfor the reason that both sides wouldhave been chopned un and kept fromoxidizing until after the mold was filledabove the joint; the two sides wouldboth have been kept hot so that theywould be in better shane to meet atthe top, but otherwise there would h =the same old trouble—the two metaswill have to meet and adhere to eachother, which is seldom done perfect^. Pop gates, which in many classes of /J//J/J///J///////11. work are a nuisance, can frequently beused to advantage on pipes. They pre-vent any possibility of kick from themetal crawling over the core and theydo away with any chance of a badamalgamation of the metal at the top,but a pop gate is apt to cause splash-ing when the metal strikes the core andthis will cut the mold. If a green sandcore is used a pop gate is likely tocut the core. From this it will be seen that should be big enough to floodthe portion where they strike so thatthe incoming metal runs in metal and advocate insubordination, but I want toshow the folly of trying to work as ajourneyman moulder in the averagefoundry. Like so many foundries, it wasdominated over by a superintendent whomight have been a capable machinist,but he knew nothing about a foreman was what would be calleda filler in a big foundry. He could workwith a gang or he could do good enoughmolding on trinkets, but he was notup on details. However, this job w
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfoundri, bookyear1921
