. Railway mechanical engineer . ks, 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 ar
. Railway mechanical engineer . ks, 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 swinging link arrangement for tak-ing care of the lateral motion, but this arrangement is ex-ceptional. Some engineers employ side bolsters for the bogies, this. Tank Locomotive for Passenger Service, Lancashire &. Yorkshire usual form of bogie is arranged so that lateral movementbetween the truck and the center pin take place in astraight path at right angles to the longitudinal center lineof the bogie. The bogie is built up of two side plateframes held by a central casting the upper part of whichhas a machined surface. This casting is divided trans-versely by a rectangular cavity which extends nearly thefull width between the bogie framing. A casting having practice being much used on the Great Western new Baltic type tank locomotives in ser\ice on theBrighton Line have side bolsters fitted to the four-wheeledbogies. A number of noteworthy examples of tank engines of mod-ern design are referred to in the table and of these engines are quite exceptional, particularlythe 4-6-4 locomotives for the London, Brighton k South August, 1917 RAILWAY MECHANICAL ENGINEER 427 Ct3 4/1 =O C ^ 9
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
