. Railway master mechanic . t it was built from draw-ings Mr. Waters made from an engine in the Portland shop-and to this Mr. Bates bears witness, saying that he remem-bers when the drawings were made. Mr. Bates is doubtless right in his other statements, and Actual corrected for1+fc • clearance expressed (page 23) by formula , where k n+kin per cent, of the piston displacement, and n = 1 -r- ap-parent ratio of expansion. Prof. Woods goes on to saythat *in making calculations the actual ratio of expansionshould of course be used, but formula (1) will not thengive correct results, as by i
. Railway master mechanic . t it was built from draw-ings Mr. Waters made from an engine in the Portland shop-and to this Mr. Bates bears witness, saying that he remem-bers when the drawings were made. Mr. Bates is doubtless right in his other statements, and Actual corrected for1+fc • clearance expressed (page 23) by formula , where k n+kin per cent, of the piston displacement, and n = 1 -r- ap-parent ratio of expansion. Prof. Woods goes on to saythat *in making calculations the actual ratio of expansionshould of course be used, but formula (1) will not thengive correct results, as by it the mean pressure between gand c (diagram Pig. 5, page 24) is found, and not that be-tween a and c and a correction must therefore be made. How is the correction made which will enable me by theuse of formula (1) to calculate mean pressure during stroke,or from */ to c, Pig. 5, taking account of clearance by usingcorrected value of ri If you would kindly answer the above question for me Ishould be verj- gieatly C =5 ■- Q by the association in regard to gauges andlimits for the standard contour and measurements ofthe M. C. B. automatic coupler, when new, the com-mittee has carefully reconsidered the whole questionsince the discussion on its report to the convention , and in view of this discussion and the action ofthe convention upon its report, the committee believes THE RAILVSTAY MASTER MECHANIC.
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Keywords: ., bookcentury1800, bookdecade1870, bookidr, booksubjectrailroadcars
