. American engineer . ^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
. American engineer . ^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. 216 AMERICAN ENGINEER. Vol. 87, No. 4. is rigidly supported from the frame the same as the Hnk, andtheir relative positions are therefore unchanged and unafifectedby any vertical movement of the wheels and boxes in the pedes-tals. The eccentric or return crank is of the same general formand performs the same functions as in the ordinary Walschaertvalve gear. This valve gear has been applied to a Chicago, Peoria & locomotive which was built to carry 200 lbs. steam pres-sure and it is reported that since applying the new gear thepressure has been reduced to 180 lbs. without reducing theefficiency of the locomotive. This is believed to be due to themore accurate and uniform movement of the valve. RUMSEY FREIGHT CAR DOOR A freight car door, designed to meet the requirements of allkinds of freight service, has been placed on the market by theRumsey Car Door & Equipment Company, Karpen Building,Chicago. At the first glance this door has all the appearances ofthe ordinary ca
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
