. American engineer . ivers. This makes them the heaviest of their type onour records, both as regards total weight and weight on drivers. -Idi- has been provided. It is stated by the designer that a proportionof 30 to 1 between heating surface and grate area is consideredgood practice for burning low grades of fine anthracite grate area is 108 sq. ft., and with this proportion the boilershould have 3240 sq. ft. of heating surface. As a matter of fact2268 sq. ft. of heating surface has been added to this, makingthe total 5508 sq. It is necessary to burn buckwheat coal atcomparati
. American engineer . ivers. This makes them the heaviest of their type onour records, both as regards total weight and weight on drivers. -Idi- has been provided. It is stated by the designer that a proportionof 30 to 1 between heating surface and grate area is consideredgood practice for burning low grades of fine anthracite grate area is 108 sq. ft., and with this proportion the boilershould have 3240 sq. ft. of heating surface. As a matter of fact2268 sq. ft. of heating surface has been added to this, makingthe total 5508 sq. It is necessary to burn buckwheat coal atcomparatively low furnace temperatures which requires a verylarge grate surface to get the best results. On this account theextra heating surface is added in order to approximate the samefuel economy as might be obtained by the superheater withoutthe extra complications incident to its use. Thus far in the op-eration, the smokebox temperatures seem to be comparativelylow and the amount of coal burned for the work done is rela-. ))2|t2l<- «-—- Frjme Brace at the Guide Yoke. They have an unusualh large lirebcx of the Wooten type andare arranged for burning a mixture of anthracite and bituminouscoal. Eight months service has shown that the combination of24 in. X 32 in. cylinders, 225 lbs. steam pressure and 61J4 of drivers has produced a locomotive which is verywell adapted for fast, heavy road service, as well as for slow,heavy grade work. One of the most interesting features of the design is the factthat a superheater is not used. To make up for its absence,however, an extra large amount of evaporative heating surface tivcly smaller than is required in other types of locomotivesen this road. Since a combustion chamber 43 in. in length has been installedahead of the firebox, the tubes are but 17 ft. 8 in. long. Inorder to get this very large amount of evaporative heating sur-face with the 24 in. diameter tubes used, it is necessary to havea very large diameter boi
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
