. American engineer . over two mil-lions from coal, and the expenditure £7,217,000. the surplusbeing- £ The results obtained from two locomotivesbuilt at Durban have convinced the chief mechanical engineerthat the policy of building locomotives and boilers in the Dur-ban and Salt River workshops should be considerably extendedas soon as these shops have been enlarged.—The Engineer. W PE¥II LOCOMOTIVE VALVE GEAR DRIVENFROM THE CROSSHEAD crank on a revolving shaft fastened to the locomotive frame. instead of from the driving wheel in the customary manner. This driving shaft, which is i
. American engineer . over two mil-lions from coal, and the expenditure £7,217,000. the surplusbeing- £ The results obtained from two locomotivesbuilt at Durban have convinced the chief mechanical engineerthat the policy of building locomotives and boilers in the Dur-ban and Salt River workshops should be considerably extendedas soon as these shops have been enlarged.—The Engineer. W PE¥II LOCOMOTIVE VALVE GEAR DRIVENFROM THE CROSSHEAD crank on a revolving shaft fastened to the locomotive frame. instead of from the driving wheel in the customary manner. This driving shaft, which is inarked A in the illustration, con- Thc rullint; nl a locomotive changes the relative position of tinues across the locomotive on top of the frames and is revolved the ilri\iii« axle and the cylinders and has some effect on the by the lever C and the rod B which form a connection from the accuracy of tlu- W alschaert and Stephenson type of valve gears. crosshcads as shown. It thus has practically the same rotary. ^4?- -14 10-Valve Gear That Is Not Affected by the Vertical Movement of the Drivers. For the purpose of overcoming this objection, an original type motion as the driving wheel and the movement of the return of valve gear has been designed and put in service on the Chi- crank delivers to the link the same speed and periodicity of cago, Peoria & St. Louis. It consists essentially of a Walschaert oscillation as it would have if connected to the driving wheel, gear deri\in;-; its motion for the valve travel from a return It should Ije noted, however, that the rotary shaft on the engine
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
