. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . nk being coupled to an eccentric frame, consisting of transverse bars, ismounted on the locomotive. Plates andbars sustain the frame. On the bars near-est to the steam chest there is a U-shaped bracket in which a bell crank isjournaled, and connected pivotally at oneend with the outer end of the valve rodor stem, and at its other end is pivotallyconnected to one end of a substantiallyupright link. The link is connected at itslower end with the eccentric rod, at theextreme end of the ecc
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . nk being coupled to an eccentric frame, consisting of transverse bars, ismounted on the locomotive. Plates andbars sustain the frame. On the bars near-est to the steam chest there is a U-shaped bracket in which a bell crank isjournaled, and connected pivotally at oneend with the outer end of the valve rodor stem, and at its other end is pivotallyconnected to one end of a substantiallyupright link. The link is connected at itslower end with the eccentric rod, at theextreme end of the eccentric rod. Theends of the bell crank are bifurcated toreceive the ends of the bell crank andeccentric rod. A tumbling shaft securely mounted onthe frame extends to a point flush withthe plates of the frame. A reach rod is is U-shaped and straddles the plates onthe frame. The lower ends of the sidesof the yoke are pivoted to the frame andserve to support and properly guide thetumbling yoke, the arms of the yoke be-ing arranged upon opposite sides of radius bar or link is pivotally con-. ^H. PLAN VIEW OF SMITH VALVE GEAR. nected with the eccentric rod at a pointslightly spaced from the connections ofthe upright link previously alluded radius bar or link is approximatelyupright and connected at its upper endpivotally with upper arm of the bellcrank, the lower arm as already stated,being attached to the valve rod. The ra-dius bar, being supported by the tumblingyoke, it will be readily seen that by mov-ing the reverse lever the tumbling yokewill be moved in an arc, and in so alter-ing moves the radius bar link in such away that the eccentric rod is caused tochange its position and the reversing ofthe valve is resultant. Such is a brief description of the newvalve gear, and it is claimed that by tak- ing advantage of the rapid movement ofthe crank and eccentric rod at the lowerand upper parts of the stroke of thecrank a quick opening and closing of thevalve is o
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Keywords: ., bookcentury1900, bookdecade1900, bookidrailwaylocom, bookyear1901
