. American engineer and railroad journal . gear of the Walschaerttype which are not always found in the gears being applied. Itconsists of as few parts as can be used to advantage and stillobtain a satisfactory motion. All moving parts are made as lightas stiffness would allow and particular attention has been givento providing case hardened bushings and pins at all wearingpoints. Full advantage has also been taken of the opportunity drawing will show that tin- great importance of an absolutelyrigid support for the link has been fully appreciated. Sincisection of tne gear must be located back
. American engineer and railroad journal . gear of the Walschaerttype which are not always found in the gears being applied. Itconsists of as few parts as can be used to advantage and stillobtain a satisfactory motion. All moving parts are made as lightas stiffness would allow and particular attention has been givento providing case hardened bushings and pins at all wearingpoints. Full advantage has also been taken of the opportunity drawing will show that tin- great importance of an absolutelyrigid support for the link has been fully appreciated. Sincisection of tne gear must be located back of the front driver andwith the center of its trunnions some distance ahead of the pointmidway between the dKvers, it is necessary to support it from acantilever extending oul a distance of over 2 ft. from the mainframes. As the link is hung 13J-2 in. ahead of this extendingarm, a twisting action is introduced which must be opposed bya liberal length of bearing on the frame. The construction at this point consists of a steel casting which. Section A B Liu; Forward PLAN AND ELEVATIONS (IF ASSEMBLED VALVE GEAR OF THE WALSCHAERT TYPE—PENNSYLVANIA RAILROAD. presented by the use of this type of gear in obtaining an excep-tionally good system of frame bracing. The general assembled drawing of the gear shows the sup-ports for the different parts very clearly, and a study of that This is the fourth article of a series describing in detail typical arrange-ments of the Walschaert valve gear. The standard arrangement used onconsolidation locomotives on the Canadian Pacific Railway was described onpage 16 of the January, 1908, issue. A typical application made by theAmerican Locomotive Company to some Pacific type locomotives for theFlorida East Coast Railway was described on page 89 of the March, 1908,issue. Details of the Walschaert gear u?ed on a recent order of Pacifictvpe locomotives furnished to the A. T & S. F. Ry. by the Baldwin Loco-motive Works were described on page 114 of
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
