The manual training school, comprising a full statement of its aims, methods, and results, with figured drawings of shop exercises in woods and metals . - the pattern itself. Parting-sand is now sprinkledon both sides of the IS: Fig. 116. Molding a Ring of Sand in the Groove. In 3, Fig. 116, we have a mound of sand well rammed cover-ing the upper half of the pattern and filling the crater, but 118 THE SECOND, OR MIDDLE YEAR. [Chap. m. separated from the drag by the parting-sand. The mound isnow cut down to a ring around the sheave, the upper slopebeing symmetrical with the lower,
The manual training school, comprising a full statement of its aims, methods, and results, with figured drawings of shop exercises in woods and metals . - the pattern itself. Parting-sand is now sprinkledon both sides of the IS: Fig. 116. Molding a Ring of Sand in the Groove. In 3, Fig. 116, we have a mound of sand well rammed cover-ing the upper half of the pattern and filling the crater, but 118 THE SECOND, OR MIDDLE YEAR. [Chap. m. separated from the drag by the parting-sand. The mound isnow cut down to a ring around the sheave, the upper slopebeing symmetrical with the lower, and left smooth. The copeis now placed in position, parting-sand is sprinkled on the ring,the cope, runners, risers, etc., are put in place, and the cope isrammed full of sand, as shown in 4, Fig. 117. There are now three separate bodies of sand in the flask:Jlrst, that in the main part of the drag; second., that in the ringwhich fits into the groove in the pattern; third, the main partin the cope. The next operation, of drawing the pattern, is a delicate the cope, letting the upper half of the pattern come with it. The cope is turnedover, the pattern drawnfrom it, and the copeis replaced on the entire flask is
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmanualt, bookyear1906
