. The railroad and engineering journal . own in fig. 177. With this formof construction some difficulty was encountered in cases ofcollision and other accidents to locomotives, in which eitherthe front or the back ends of the frames were injured. It thenbecame necessary to talce down the whole frame to repair oneend. This led to making the front and back ends in separatepieces and boUini; them together, as shown in fig. 178. Withthis plan, if cither end was taken down, it was necessary one pair of driving-wheels. As the front part of the SPRINGS KQUALIZING LEVERS. Ordinary equal
. The railroad and engineering journal . own in fig. 177. With this formof construction some difficulty was encountered in cases ofcollision and other accidents to locomotives, in which eitherthe front or the back ends of the frames were injured. It thenbecame necessary to talce down the whole frame to repair oneend. This led to making the front and back ends in separatepieces and boUini; them together, as shown in fig. 178. Withthis plan, if cither end was taken down, it was necessary one pair of driving-wheels. As the front part of the SPRINGS KQUALIZING LEVERS. Ordinary equalizing levers were used between the driving,heels on the engine represented by fig. i^, which was built] in 1845. Mr. Rogers appreciated their value, and very few, ifany, engines were afterward built without using them in someform. Figs. 1S2 to iS6show the forms of spring and equal-izing lever arrangement that were successively used for eight-wheeled American Figs. 1S7 and inS represent a plan adopted for narrow-gauge Fig. frame is usually injured in accidents, it was desirable to beable to take it down without removing any of the driving-wheels. The plan shown in fig. 179 was therefore adopted in186S. In this the front end is bolted to the back end, ahead ofthe front pedestals, so that the front part can be removed with-out disturbing the driving-wheels, if it is desirable to do form of construction is the one which is still used and hasbeen very generally adopted on .\meric engines in 1S78. The purpose was to allow a wider fire-bo.\to Ije used than is possible when the springs are placed along-side of it. Fig. :Sq shows the arrangement of springs used in iSSo forconsolidation engines. The springs for the front are notshown in the engraving. Their connection with the leadingtruck and other applications of equalizing levers will be de-scribed further on under the head of trucks.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
