. Railway mechanical engineer . ovations have been introduced. It is of the conical ex-tended wagon top type with a 5-ft. 4-in. combustion chamberand tubes and flues 24-in. and 5J<2-in. in diameter respec-tively. 21 ft. 5 in. long. A type A superheater with 46 units is applied. The firebox has a Security arch and is fired bya Duplex stoker. The grates are operated by the Franklinpower grate shaker. The Security spark arrester which has been in use forseveral years on the Rock Island Lines is used. This con-sists of a cylindrical or truncated conical box made ofperforated plate or netting, c
. Railway mechanical engineer . ovations have been introduced. It is of the conical ex-tended wagon top type with a 5-ft. 4-in. combustion chamberand tubes and flues 24-in. and 5J<2-in. in diameter respec-tively. 21 ft. 5 in. long. A type A superheater with 46 units is applied. The firebox has a Security arch and is fired bya Duplex stoker. The grates are operated by the Franklinpower grate shaker. The Security spark arrester which has been in use forseveral years on the Rock Island Lines is used. This con-sists of a cylindrical or truncated conical box made ofperforated plate or netting, closed at both ends and set be-tween the nozzle stand and the stack extension. The boxis reinforced around the openings where it is fastened tothese parts. The petticoat pipe is supported on two bracesinside the box. At the outer end a sliding door is providedwhich permits of readily inspecting the box or doing anywork inside it. The entire box can be inserted or removedthrough the smoke-box door. The spark arrester is supported. Crosshead for the Rock Island 2-10-2 Type Locomotives entirely between the nozzle stand and stack extension. Thearrangement of the front end is clearly shown in the illus-tration. Several months ago the Rock Island ajjplied a new typeof cab to a Mikado locomotive. It proved so satisfactorythat a similar design is being used on all new power. Thefront wall of the cab, instead of being vertical, is sloped at 41 42 RAILWAY MECHANICAL ENGINEER Vol. 93, No. 1
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
