. Railway mechanical engineer . Fig. 1—Detailj and Astembled View o1 Pouring Jig by flettrit welding. A circular Iwnd wide enough to ac-commodate the wide>t hub hner and provided with a |x)uringgate at the top also arranged in two sections drawn tightlvaround the circular plate by draw keys as In ap()Iying hub liners by this mc-tluMJ the first O|); to remove the old liners and machine tlie hub faces, cuttinga rixe>.^ aUjut ;.^ in. deep by 14 in. wide, dovetailed on lioth sides to about 45 deg. The circular plate is thenapplied around the journal and adjust
. Railway mechanical engineer . Fig. 1—Detailj and Astembled View o1 Pouring Jig by flettrit welding. A circular Iwnd wide enough to ac-commodate the wide>t hub hner and provided with a |x)uringgate at the top also arranged in two sections drawn tightlvaround the circular plate by draw keys as In ap()Iying hub liners by this mc-tluMJ the first O|); to remove the old liners and machine tlie hub faces, cuttinga rixe>.^ aUjut ;.^ in. deep by 14 in. wide, dovetailed on lioth sides to about 45 deg. The circular plate is thenapplied around the journal and adjusted for the desiredlateral play, the brass tipped set screws being tightened tohold the plate in this position. The band is applied aroundthe plate, being tightened by the draw keys. Pulverized. Fig. 2—View Showing Bronze Liner after Being Poured asbestos is applied behind the jig to prevent bronze fromrunning out over the spokes of the wheels; also jjetween thecircular plate and the journal when jwuring liners on wheelswith journals below the standard dimensions. The whcx-lsdo not have to be heated nor do they have to be liners are jjoured at one time. The bronze is {xiureilin the gate shown at the top of tlie jig and as soon as themetal has cooled sufficiently, the jig is removed. The boxmay then be api)lied, as liners poured by this method requireno machining. has shown that theseliners give better service and wear longer than liners tliatare riveted on and the cost of application is reduced about50 per cent. The hul) liner just after being poured, cooledand the jig removed is siiown in Fig. 2. Less than two[KT cent of the liners a])plied Ijy tiiis method crack aftercooling in spite of the fact that wheels are not preheated. D
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
