. American engineer and railroad journal . a very decided simpli-fication of the machinery in connection with the cylinders,all of which is subject to wear and is a source of expense, andwhile the use of a single valve may be considered to compli-cate the cylinder casting somewhat, we believe that it is animprovement and that future American designs of this typeof engine will use the single valve until the cylinders reach such a size as to make a singlevalve chamber unwieldy. In the matter of superheatedsteam as used on the Belgiumengine it is by all means de-sirable where the locomotive isto
. American engineer and railroad journal . a very decided simpli-fication of the machinery in connection with the cylinders,all of which is subject to wear and is a source of expense, andwhile the use of a single valve may be considered to compli-cate the cylinder casting somewhat, we believe that it is animprovement and that future American designs of this typeof engine will use the single valve until the cylinders reach such a size as to make a singlevalve chamber unwieldy. In the matter of superheatedsteam as used on the Belgiumengine it is by all means de-sirable where the locomotive isto be operated in heavy ser-vice. Its special properties ofbeing a poor heat conductorand of rapid movement arespecially desirable with this typeof locomotive and will aidlargely in keeping down the sizeof the single valve chamberfor the two cylinders, as well aslargely prevent the condensa-tion losses necessarily accom- Section \-X of ValveEctl View of V * Y-V oj 1 ir] il . August, 1906. AMERICAN ENGINEEE AND RAILROAD JOURNAL. 293. Section A-B CYLINDERS FOR FOUR CYLINDER BALANCED SIMPLE LOCOMOTIVE. panying the increased area of passages and cylinder general dimensions are as follows: FOUR CYLINDER BALANCED SIMPLE INSPECTION LOCOMOTIVE. Lake Shore & Michigan Southern Ry. general data. Gauge 4 ft. 8 % ins. Service Inspection Fuel Bituminous coal Tractive power 15,700 lbs. Weight in working order Weight on drivers 85,100 Weight on truck 41,500 Wheel base, driving 9 ft. Wheel base, total 25 ft. 1 in. Wheel base, engine and tender 48 ft, 4% ins. RATIOS. Weight on drivers -f- tractive effort Total weight -=- tractive effort SI Tractive effort x diam. drivers -=- heating surface 670 ■Total heating surface -f- grate area 69J5 Firebox heating surface -=- total heating surface % Weight on drivers 4- total heating surface 5TR Total weight H- total heating surface Volume four cylinders cu. ft. Total heating surface -r- vol. cylinders 258 Grate a
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