. Railway mechanical engineer . s the radius rods liold them in position andthere is sufficient play m the radius rod where it is attachedto the centre pin to permit of the rise and fall of the axleboxes due to inequalities in the road. The springs are ofthe laminated type mounted above the boxes and a pinextends from the buckle and bears on a flat plate sliding onthe top of each box. The latest practice on the Great Western, Great Central its upper surface spherical and machined all over restson the cross stretcher casting, a suitable rectangular exten-sion on its lower surface fitting into t
. Railway mechanical engineer . s the radius rods liold them in position andthere is sufficient play m the radius rod where it is attachedto the centre pin to permit of the rise and fall of the axleboxes due to inequalities in the road. The springs are ofthe laminated type mounted above the boxes and a pinextends from the buckle and bears on a flat plate sliding onthe top of each box. The latest practice on the Great Western, Great Central its upper surface spherical and machined all over restson the cross stretcher casting, a suitable rectangular exten-sion on its lower surface fitting into the rectangular cavityin the stretcher casting. Under the inside cylinders is thecenter casting on which the bogie turns; this center fits intothe intermediate casting just described. In the rectangularcavity of the bogie frame stretcher at each side of the rectan-gular extension on the intermediate casting are disposedcoiled compression springs. They hold the bogie centralbut allow for a limited lateral movement, the turning or. Great Central Passenger Tank Locomotive and Great Northern is similar to American practice in thedesign of two-wheeled trucks, the radial movement beingcontrolled by radius rods working from a fixed centre andthe centering being done by swinging links. Where four-wheeled bogies or trucks are used, they are, in general,similar to those used for tender engines. The London 5cNorth Western standard bogie provides for a circular turn-ing movement round a centre and for a lateral movement,which takes place between curved guides, the control ofwhich is effected, by means of coiled springs. The most circular motion being obtained by means of the center justdescribed. Suitable oil grooves are cut in the working sur-faces and lubricators are provided for supplying oil. Thisbogie is the kind most favored and is known as the Adamsbogie. It is a strong construction and results in a steadyrunning bogie. Jlore recently some designers have madeuse of the American swing
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
