. Canadian foundryman (1918). n Fig. 7 is placed on the plateand filled tightly with coke, after whichthe core sand is rammed around it untilit is of a sufficient size to be swept to theexact shape and dimentions. The boltholes marked , Fig. 7, are used tobolt the two halves together, and wrhenbolted in three places it makes a core asrigid as though it had been swept on abarrel arbor. The other cores are madein core boxes from the same mixture andare suitably rodded and vented. Thisis not difficult, as the oil cores are strongin themselves and when burned, very littlegas is generated. Th
. Canadian foundryman (1918). n Fig. 7 is placed on the plateand filled tightly with coke, after whichthe core sand is rammed around it untilit is of a sufficient size to be swept to theexact shape and dimentions. The boltholes marked , Fig. 7, are used tobolt the two halves together, and wrhenbolted in three places it makes a core asrigid as though it had been swept on abarrel arbor. The other cores are madein core boxes from the same mixture andare suitably rodded and vented. Thisis not difficult, as the oil cores are strongin themselves and when burned, very littlegas is generated. The setting and securing of the cores,is undoubtedly the most particular partof the entire job. They must, not onlybe properly placed but must be securedagainst being shifted or floated by theforce of the incoming metal. The systemadopted by Mr. James Douglas, who hascharge of this department, assisted by his~.ble aide, Mr. A. E. Scott, leaves no roomhowever for fear. To demonstrate moreclearly we will go back to the ramming of. FIG. 3—TOP HALF OF HEAD CORE BEING LOWERED INTO POSITION TEMPORARILY. STUD CHAPLETS IN BARREL IN PLACEOF CLAY BALLS, ALSO SPACE BACK OF CHEST CORE TO FACILI TATE TYING CORES INTO PLACE AS WELL AS ALLOWING FORESCAPE OF GAS FROM CORES. November, 1918 CANADIAN FOUNDRYMAN 269
Size: 2052px × 1218px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjec, booksubjectfoundries
