. American engineer and railroad journal . nal, The principal changes which have been made in the formerNovember and December, 1904, and January, 1905. design are the application of the Walschaert valve gear inRecently it has become necessary to order more locomotives place of the Stephenson, and the use of a radial outside bear-of this type, and in view of the excellent satisfaction which ing trailer truck. This company has had considerable ex-had been given by the previous engines, it was decided to perience with Walschaert valve gear in freight service, itpractically duplicate that design i
. American engineer and railroad journal . nal, The principal changes which have been made in the formerNovember and December, 1904, and January, 1905. design are the application of the Walschaert valve gear inRecently it has become necessary to order more locomotives place of the Stephenson, and the use of a radial outside bear-of this type, and in view of the excellent satisfaction which ing trailer truck. This company has had considerable ex-had been given by the previous engines, it was decided to perience with Walschaert valve gear in freight service, itpractically duplicate that design in essential details, and an being the pioneer in the use of this design, which is now be-order was given to the American Locomotive Company for coming very popular in this country, and this experience hasthe engines, which are illustrated herewith, and which, in been so satisfactory that it was decided to extend its use toregard to total weight and weight on drivers, are the heaviest passenger locomotives. In making the application it was. SECTIONS AND VALVE GEAR, PRAIRIE TYPE LOCOMOTIVE, L. S. & M. S. BY. passenger locomotives that have ever been constructed,weighing, as they do, nearly 245,000 lbs. total and 170,000 drivers. This order forms the third class of Prairie type enginesin use on this road for fast passenger service, the first ofwhich were put. into service early in 1901. Each new classhas been designed in view of the experience with the previousone, and it speaks exceedingly well for those already in usethat it has been found necessary to make so few changes in necessary to rearrange but a small number of parts in theprevious design, and the cylinders, guide yoke and guideswere allowed to remain as they were, a separate steel castingbeing designed to span the frame between the first and secondpair of drivers and support the link of the Walschaert as a valve chamber over the frames is used, it wasnecessary to transmit the motion to ;i rocker pla
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
