. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . srcTKy*Ar roffc sec rION ^r ccit c^0^ OF BAKER VALVE GEAR—INSIDE ADMISSION. Baker gear, or by lengthening radius barhanger on Walschaerts gear on left sideor by shortening short reach rod onBaker gear and shortening radius bar onWalschaerts gear. As before stated, the back end is 19inches and front 17 inches, correctionsshould be made by lengthening eccentricrod (mark valve stem and guide at cross-head, then move crosshcad 1 inch andmark valve stem; if found that valvestem has moved
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . srcTKy*Ar roffc sec rION ^r ccit c^0^ OF BAKER VALVE GEAR—INSIDE ADMISSION. Baker gear, or by lengthening radius barhanger on Walschaerts gear on left sideor by shortening short reach rod onBaker gear and shortening radius bar onWalschaerts gear. As before stated, the back end is 19inches and front 17 inches, correctionsshould be made by lengthening eccentricrod (mark valve stem and guide at cross-head, then move crosshcad 1 inch andmark valve stem; if found that valvestem has moved 1/16 inch to the cross-licads I inch, this will be the properratio), J4 inch on Baker gear and 3/16inch on Walschaerts. If front end is 19inches and back 17 inches correctionsshould be made by shortening rod V^ inchin Baker and 3/16 inch m WaLschaertsgear. This article refers to locomotives hav-ing inside steam The ratio of change on Baker gear is 4to 1; on Walscliacrts gear ratio is; (valvetravel divided into diameter of circle ofeccentric; example. Valve travel is 6inches, diameter 18 inches, Ratio 3 to 1)3 to 1. Prove engine by catching on each cen-ter in both directions. Place reverse barin lOtli notch of quadrant in forward mo-tion, roll wheels forward. When trampoints are on line of valve opening, stoprolling and measure distance betweencross-head and travel, mark on guide,marking this distance down some con-venient place, doing this on all points ofboth forward and backward motion. Ifforward motion on right side totals 36inches (that is if back end is 19 inchesand front end 17 inches) and left sidetotals 34 inches, this should be corrected BAKER VALVE GEAR DETAILS—OUTSIDE AND INSIDE ADMISSION. by lengthening the short reach rod on at the best, vanished in the scrap heap,^nd the improved locomotives, panopliedonly in their supreme strength, cameforth to bring the far ends of the con-
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