. Electric railway journal . bearing to prevent scarring, is set in position on theend of the journal. This striking block then receivesfour blows from a 12-lb. hammer, the axle being turned90 deg. with each blow. If there is a flaw which is notevident under the magnifying glass, the sledge-hammerblows are quite certain to bring it out, its presencebeing indicated by thin film of oil which appears alongthe crack. This simple method of locating flaws injournals and axles has resulted in the removal of sev-eral defective axles from service. Method of Mounting Pinions The first operation in mount
. Electric railway journal . bearing to prevent scarring, is set in position on theend of the journal. This striking block then receivesfour blows from a 12-lb. hammer, the axle being turned90 deg. with each blow. If there is a flaw which is notevident under the magnifying glass, the sledge-hammerblows are quite certain to bring it out, its presencebeing indicated by thin film of oil which appears alongthe crack. This simple method of locating flaws injournals and axles has resulted in the removal of sev-eral defective axles from service. Method of Mounting Pinions The first operation in mounting a pinion is to pre-pare the key for a driving fit on the armature CHICAGO ELEVATED—WHEEL AND AXLE-TURNING HOIST CHICAGO ELEVATED—VIEW OF WHEEL HEATING OUTFIT March 20, 1915] ELECTRIC RAILWAY JOURNAL 553 Keys are required to fit snugly against the sides of thepinion keyways but not as tightly as on the a key has been fitted, the pinion is slipped on theshaft to insure clearance between the key and the bot-tom of the pinion key way. A feeler gage, 1/64 , is used to determine the keyway clear-ance, and it must pass the entire length of (*-„■—the keyway. The taper fits of pinion and TV,1 ^ Trim Upper Valve Stem hereTrim Flut Running water is so connected to the molds that thereis sufficient flow of cold water to cool the mandrels dur-ing molding operations. While the molds are out ofservice, they are coated with heavy petroleum greaseto keep them in good condition.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
