. Canadian foundryman (1921). FIG. 2—CROSS SECTION VIEW OF CASTING BEDDED IN THE BRICK AND LOAM CORES SET AND COVER PLATE IN PLACE. May, 1921 CANADIAN FOUNDRYMAN 25. FIG. 3—VIEW OF SPIDER CASTING AS TAKEN FROM THE MOLD,AFTER BREAKING OFF THE CORES WHICH SEPARATE THE ARMS. FIG. 4—VIEW OF MOLD FOR SAME. WOULD NOT IMPRESS ONE AS SUCH ON FIRST SIGHT. BUT FIG. 5 WILL SHOW IT MORE CLEARLY. accuracy of the casting depends on theaccuracy of the outside of the core. Inthe mold here described the bottom isswept out as shown in Fig. 4, afterwhich the cores for the legs are placedas shown in Fig
. Canadian foundryman (1921). FIG. 2—CROSS SECTION VIEW OF CASTING BEDDED IN THE BRICK AND LOAM CORES SET AND COVER PLATE IN PLACE. May, 1921 CANADIAN FOUNDRYMAN 25. FIG. 3—VIEW OF SPIDER CASTING AS TAKEN FROM THE MOLD,AFTER BREAKING OFF THE CORES WHICH SEPARATE THE ARMS. FIG. 4—VIEW OF MOLD FOR SAME. WOULD NOT IMPRESS ONE AS SUCH ON FIRST SIGHT. BUT FIG. 5 WILL SHOW IT MORE CLEARLY. accuracy of the casting depends on theaccuracy of the outside of the core. Inthe mold here described the bottom isswept out as shown in Fig. 4, afterwhich the cores for the legs are placedas shown in Fig. 5. These cores as willbe seen in Fig. 5 are made in parts andbuilt up to make the legs. One will beseen completed while two others arepartly done. On the flat sides of theones which are partly done will be seenthe impression of one half of the all the cores are completed the en-tire eight legs will be provided for. Ifthe two partly finished cores shown inFig. 5 were completed it will be seen thatthe three cores would fit tight togetherat the part where the cores show a por-tion cut away on an angle. If all thecores were in place they would, ofcourse, all
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfoundri, bookyear1921
