. Railway and Locomotive Engineering. he clever Belgian device. Hencethe appearance some years ago of theBaker-Pilliod valve gear, which afterpassing through the experimental stage,and undergoing several organic changes,has now. with increased merit in point of pensed with the use of the link and byan ingenious bell crank connection themotion is transferred to the radius barand valve rod. As is well known amongengineers, the avoidance of tlie variationsdue to the slip of the link and link blockis a decided gain in value wear mecha-nism, especially when the parts gatherlost motion incidental to
. Railway and Locomotive Engineering. he clever Belgian device. Hencethe appearance some years ago of theBaker-Pilliod valve gear, which afterpassing through the experimental stage,and undergoing several organic changes,has now. with increased merit in point of pensed with the use of the link and byan ingenious bell crank connection themotion is transferred to the radius barand valve rod. As is well known amongengineers, the avoidance of tlie variationsdue to the slip of the link and link blockis a decided gain in value wear mecha-nism, especially when the parts gatherlost motion incidental to service. In this regard the Baker valve gearlends itself readily to massivcness of con-struction. The bearings and bushingsmay readily be made of ample dimensions,and a degree of security and an assur-ance of a continuity of fixity in positionmay be attained hitherto unknown invalve gear construction and adjustment. In addition to this important advantagethere are other peculiarities in the move-ment which have been cleverlv used to. THE BAKER VALVE GEAR. efficiency, taken a settled form and is nowknown as the Baker valve gear. Over 400 American locomotives arenow equipped with this valve gearing andnearly 50 railroads have installed thegearing as part of their equipment andthe reports, from all who have reported,are of the most gratifying kind. A brief description of the gearing willbe of interest, as the variation from anyother form of valve gear is particularlymarked. Like the Walschaerts gearingthe movement is derived from the cross-head and a single eccentric crank. Thecrosshead connection has the effect ofmoving the valve the amount of the lapand lead, and the eccentric crank givesthe required movement for the amount ofvalve travel. These peculiarities are sim-ilar to the movement in the Walschaertsvalve gear, but whereas the Walschaertsgear is equipped with an oscillating linkthrough which the movement passes tothe radius bar and valve rod, the de-signers of the Baker g
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