. American engineer and railroad journal . \& llpl m Wf¥\ I flat bars, steel castings and prf ssed steel have been used respect-ively for truck bolsters; and these will be described is more or less diversity in the details of wooden truckbolsters, the cross section being the same on hardly any two roads,some using one solid piece of wood, some two pieces bolted to-gether, and others again introducing flat plates, channel bars orI-beams, those without any iron stiffeners being trussed by rods,Figs. 43, 44 and 45 show a good form of the latter, which will fitthe truck
. American engineer and railroad journal . \& llpl m Wf¥\ I flat bars, steel castings and prf ssed steel have been used respect-ively for truck bolsters; and these will be described is more or less diversity in the details of wooden truckbolsters, the cross section being the same on hardly any two roads,some using one solid piece of wood, some two pieces bolted to-gether, and others again introducing flat plates, channel bars orI-beams, those without any iron stiffeners being trussed by rods,Figs. 43, 44 and 45 show a good form of the latter, which will fitthe truck frame illustrated in the last issue. The bolster AA ismade of oak, 8i by 13 inches in section, and is cut down to 6iinches deep at the ends, where it projects through between thearch bars rnd column guiides. It is trussed by means of truss-rods BB, li inches in diameter, with the ends enlarged to If rods are bent to shape and then inserted in place throughslots cut in the bottom of the bolster, which are filled up by piecesof wood
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
