. The Street railway journal . itted. This construction prevents the oil from oozingaway. The transom bars are made angle shape, so as to give greatstrength and prevent buckling. The transom-bar holders are ofthe best quality of malleable iron and carefully machine fittedto the upper members of the side frames. They are provided withpockets into which the angle-shape transom bars are accuratelyfitted. To keep the truck square, the transoms are made V-shape,project inwardly beyond the side frames, and are secured to theangle-shape transom bars forming a brace on each side. The journal boxes are
. The Street railway journal . itted. This construction prevents the oil from oozingaway. The transom bars are made angle shape, so as to give greatstrength and prevent buckling. The transom-bar holders are ofthe best quality of malleable iron and carefully machine fittedto the upper members of the side frames. They are provided withpockets into which the angle-shape transom bars are accuratelyfitted. To keep the truck square, the transoms are made V-shape,project inwardly beyond the side frames, and are secured to theangle-shape transom bars forming a brace on each side. The journal boxes are of the standard M. C. B. type with jour-nals 4Y2 ins. X 8 ins. and larger if desired, and machine fitted tocorrespond with pedestals. The axles are 5 ins. to ins. Thepedestals are machine fitted and provided with wearing strips,which can be renewed when worn out. All bearings are machinefitted. The brakes are so constructed that the pressure is applied equallyto all wheels at the same time. The leverage is at a ratio of 20 to. CROSS SECTION THROUGH CENTER OF BOLSTER FOLDING DOOR folding door (illustrated herewith) which has received much at-tention from car builders. The most ingenious part of the deviceis the slot which automatically controls the movement of thedoor in opening and closing. Mr. Duner makes four claims inhis letters patent, allof which have beengranted. The North-western Elevated, ofChicago, first usedtwo doors for oneyear, demonstratingbeyond question themerits of the inven-tion, and two subse-quent orders have been placed for twenty-fivecars and forty-five cars, respectively. The new type of folding door is also in useon several other roads. Among them are theLake Street Elevated, which has placed a con-siderable number of these doors on its cars,and the Calumet Electric Street Railway Com-pany has made a contract to equip all of its carswith the Duner door. As shown by the illustration, the device is somade that, in opening and closing, a minimum
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Keywords: ., bookcentury1800, bookdecade1880, bookidstreetrailwa, bookyear1884
