Railway and Locomotive Engineering . of the box there isusually a strong horse-shoe-shaped outerpiece of iron, half an inch at least inthickness and one inch or more in forms the outer or extreme edge ofthe proposed liner. An inner shell canreadily be fitted into the bearing of thebox, of an equal height or projectionabove the box. The two pieces are thencovered and held together by a suitable rusli, unless prevented, to tlie outer will be found that there is no need oftap bolts or other appliances to insurethe fixity of the liners. Other methodsand other materials are used i
Railway and Locomotive Engineering . of the box there isusually a strong horse-shoe-shaped outerpiece of iron, half an inch at least inthickness and one inch or more in forms the outer or extreme edge ofthe proposed liner. An inner shell canreadily be fitted into the bearing of thebox, of an equal height or projectionabove the box. The two pieces are thencovered and held together by a suitable rusli, unless prevented, to tlie outer will be found that there is no need oftap bolts or other appliances to insurethe fixity of the liners. Other methodsand other materials are used in many ofthe leading railroad shops in dealing withthe outer faces of the driving boxes aswell as the inner hubs of the wheels. In some shops the practice of applyingbabbitt liners to the boxes is best method of applying this metal,of which there are various kinds of mix-tures, is after cutting the recess on theface of the box, to heat the box suffi-ciently to allow of the process of tinning ^^ c— ^^? -V ,- ..J /,_. mmm u DRIVING BOX \\ITH PATCH OK LINKK ON SIDK WHEEL. flat attaclimint. Some mechanics applya slight coat of crude or other inflam-mable oil to the surface of the recessedportion of the box, and when tlie moltenmetal is applied it will be found that tlieburning of the oil has the eflfect of pre-venting the formation of air cells in theapplied metal. This is especially the casein the use of bronze or other alloys con-taining sulphur, these compounds gen-erally having a coarse crust forming ontheir outer surfaces. This tough coatingor scum frequently prevents the completeescape of the bubbles of oxygen or othergases that spontaneously coalesce and llic surface of the box where the babbittis to be applied, the heating being speedilyaccomplished by a small portable, cov-ered furnace. When the box is tinned inadvance of the application of the moltenliabbitt, the babbitt rarely loosens. It is also found that where babbitt isused on the box the appl
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyork, bookyear19
