Canadian foundryman (1917) . f water be--omes slack or fails. I),i not put any engine or machineryin motion without seeing whether any-one is in a position to get caught orstruck. Do not work on electrical equip-ment or touch wires unless advised by your balance and fall if the wrench -lip-. SEASONING OF CASTINGS* By Richard Moldenke.** ONE of the little-known charac-teristics of cast iron, which nev-ertheless has an important bear-ing on results where accuracy in machin-ing is essential, is the ability of thisadjust their relative positions to an ex-tent sufficient to overcome some of theexis
Canadian foundryman (1917) . f water be--omes slack or fails. I),i not put any engine or machineryin motion without seeing whether any-one is in a position to get caught orstruck. Do not work on electrical equip-ment or touch wires unless advised by your balance and fall if the wrench -lip-. SEASONING OF CASTINGS* By Richard Moldenke.** ONE of the little-known charac-teristics of cast iron, which nev-ertheless has an important bear-ing on results where accuracy in machin-ing is essential, is the ability of thisadjust their relative positions to an ex-tent sufficient to overcome some of theexisting: stresses. The following instance will perhapsgive a fair idea of the condition a cast-ing may be in when just shiken out ofthe sand: A very large sheave-wheel,after shaking out, was taken outdoorsto be cleaned and made ready for turn-ing up. It was leaned against the sideof the building, but before much couldbe done an arm tore apirt with a loudreport. Investigation showed that thesun had been shining on the upper SAFEST METHOD OF HOLDING A BAH. the electrician. Let the electrician fixthe lights. In working above, be carefuinot to drop tools or leave them wherethey may fall on someone below. Keepfrom under loads carried by the crane is being used, one manonly should have authority to signal thecrane man to hoist. The crane manshould try to hoist straight, but, as thecrane is usually .high, heavj loads mayswing, so it is best to keep at a safe dis-tance when he starts to hoist. 1),, nottighten bolts in leaking flanges on livesteam lines except under the directionof the master mechanic, lie careful inplacing a ladder before using it, andif there is any daivjer of its slippinghave someone hold it. Do not carrytools or material up or down a ladder;use a hand-line (See Pigs. 8 to 10). Re-turn mushroomed or burred chisels andother defective tools; report or removerounded nuts and be careful not to usetoo larare a wrench or one with spreadjaws. Dont pull on a w
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