. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ert valve motion tolocomotives, and many engines were soe(iuipped, particularly those built fornarrow gauge railways. The arrange-ment he used is illustrated in Fig. 30. The main link A^ was worked from acrank in the main crank pin, which wasseveral inches outside of the center lineof the cylinder. To keep the center lineof the valve seats inside of the center ofthe cylinders, the lever P 0 workedfrom the crosshead, and to which theradius arm N P was coupled, was con-nected to the block Q, wh
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ert valve motion tolocomotives, and many engines were soe(iuipped, particularly those built fornarrow gauge railways. The arrange-ment he used is illustrated in Fig. 30. The main link A^ was worked from acrank in the main crank pin, which wasseveral inches outside of the center lineof the cylinder. To keep the center lineof the valve seats inside of the center ofthe cylinders, the lever P 0 workedfrom the crosshead, and to which theradius arm N P was coupled, was con-nected to the block Q, which was boltedtc the guide bar R S. The lever P Owas connected to the outside of theblock Q, which was fastened to theguide bar, and the valve stem T wasattached to it on the inside. By thismeans the motion of the lever P 0 wastransferred to tlie center of the valvestem and valve seat, which was 3J4 of the center of the cylinder. As the point of suspension of theradius arm N P has a great influence onthe motion of the valve, the upper endof the link U V, to which the radius —.^11 ffW-. KIG. .TO. WAI,.SCHAERT VAI,VE gear AS BYWILLIAM MASON. arm was hung, was attached to a blockwhich worked in the slot of a stationarybnk or guide W. By that means thepoint of suspension U conformed to thecurve of the slot, producing nearly uni-^form distribution of steam at both endsof the cylinder. Masons Walschaert valve gear wasillustrated and described in a reportpresented to the Railway Master Me-chanics Association convention in the remarks made about it, wejudge that sentiment among mastermechanics was decidedly opposed tothe motion. M;iy, 1906. RAILWAY AND LOCOMOTIVE ENGINEERING 97 VVliat I learned from people in chargeof locomotives at that time having theWalschacrt valve gear, led me to think■that ignorance concerning the ailjust-ment of the mechanism was at the bot-tom of the opposition to the common talk was, it has too manyjoints, and that the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
