Scientific American. SEPTEMBER 9, 1876.] 165 PRACTICAL MECHANISM. BY JOSHUA ROSE. part of the mold contained in itis much more liable to break the metal is poured in. SECOND SERIES—Number X. … middle of the flask nowel. Sand is then rammed tightly in within easy reach of the cr ‘ne (which commands almost eve- It will be seen that, when a mold is made in the flask we the nowel; and when the latter is filled with the sand, it is ry part of the floor) and the threshold of the melting fur-…
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