Canadian foundryman (1921) . rfectly true. The flask, as will be seen, is shapedto the patterns on the outside and has bars, which will, of course, be in thenowel as well as in the cope, since thesame flask does for both. The sand is mixed and sifted in thebasement and conveyed by sand conveyorto the overhead bin, from which it is de-livered through chutes to the would be quite possible to have it fallfrom the chute into the mould, but thishas not been considered good practiceon work of this kind, as the moulder re-quires a shovel anyway, and while he hasit in his hand he uses the
Canadian foundryman (1921) . rfectly true. The flask, as will be seen, is shapedto the patterns on the outside and has bars, which will, of course, be in thenowel as well as in the cope, since thesame flask does for both. The sand is mixed and sifted in thebasement and conveyed by sand conveyorto the overhead bin, from which it is de-livered through chutes to the would be quite possible to have it fallfrom the chute into the mould, but thishas not been considered good practiceon work of this kind, as the moulder re-quires a shovel anyway, and while he hasit in his hand he uses the handle for therammer peene and the back of the shovelfor the hot. The sand drops from thechute in a pile beside the machine andthe moulder shovels it into the little sand is required to fill a flaskof this kind when the space occupied bythe patterns is deducted. As the sand has all been sifted in ad-vance there is no occasion to sift it againfor work of this class. The mouldersimply shovels it in and then reverses. SHOWING CYCLE OF OPERATIONS IN SOIL-PIPE FOUNDRY. CORE PRINTS AND GATESWHICH SHOULD BE SHOWN ON PATTERNS ARE UNFORTUNATELY OMITTED. 22 CANADIAN FOUNDRYMAN Volume XII. the shovel, and with the handle for arammer goes all around between theflask and the patterns, the shape of theflask making it necessary for him to ramaway from the pattern in order to ramunder the side of the flask. By this meanshe can ram as hard as he likes, making agood solid joint on the mould withoutmaking the sand too hard against thepattern. He also rams between the pat-terns, which, like the other, is only ram-ming against the machine table and doesnot affect the sand which is in contactwith the patterns. The back of theshovel is used to pack the sand over thepart which has not been rammed. Thesand is now struck off true to the flaskwith a straight strike, and this part ofthe mould is done. The lever is nowthrown sufficient to drop the patternabout a half an inch to relieve it fromth
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfoundri, bookyear1921
