. American engineer and railroad journal . laned on its rubbing surfaces and boredout to receive the bogie pin. Each side-controlling spring isto be laminated, and is to consist of IG plates 21 in. wide andJ-,, iu- thick. They are to be made of the very best cjuality ofspring steel manufactured from Swedish bar iron. Eachspring nmst be tiioroughh tested before being i)ut into itsplace by being weighted with two tons, and on the removal oftliis waiglit it must resume its original form. The top plateof each spring must be stamped with the makers name anddate of manufacture and be to the same spe
. American engineer and railroad journal . laned on its rubbing surfaces and boredout to receive the bogie pin. Each side-controlling spring isto be laminated, and is to consist of IG plates 21 in. wide andJ-,, iu- thick. They are to be made of the very best cjuality ofspring steel manufactured from Swedish bar iron. Eachspring nmst be tiioroughh tested before being i)ut into itsplace by being weighted with two tons, and on the removal oftliis waiglit it must resume its original form. The top plateof each spring must be stamped with the makers name anddate of manufacture and be to the same specification as thedriving and trailing springs. The plates are to be properlyfitted and tempered, and are to lie prevented from shiftingsiile or end ways by nilis stampeil upon them. The bucklesare to be soufid forgings, and are to fit the springs accurately,and are to be well secured by a short wrought-iron pin drivenwhile hot through a hole in the top of the buckle, and with ahole in the top plate. Through the center of the casting form-. CROSS-SECTION OF AMERICAN EXPRESS PASSENGERLOCOMOTIVE TRUCK. ing the bogie-pin a wrought-iron pin 3 in. in diameter is topass, fitted at the bottom end with a nut and washer ; the holein the stay is to be elongated to allow for the lateral motion oft he cross-slide. Each spring cradle is to be made of two York-shin^ iron jilates 6 in. deep and It in. thick, with cast-iron dis-tance pieces riveteil between them at each end ; these cast-ironl)ie(H!s are to be provided with means of lubrication, and areto be shaped to rest on the saddles foriued on the to]) of theaxle boxes. The springs are to be coujiled to the beams byhooks as shown ; the pins through the hooks are to be of steel,and the eyes of the hooks are to be case hardened. Thebrackets holding the springs arc to be of Yorkshire iron andare to be bolted to the frames with 1-in. turned bolts driven iua tight fit. The whole of the work is to be of the best descrip-tion, and the bogie, when
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
