. Railway and Locomotive Engineering. ipes, which arecurved forward at their lower ends andare provided with funnel-shaped air, in its passage upward throughthe wall, is heated to a high it enters the furnace it is projected 1 he grate is divided, by a longitudmalbearer, into two sections; and the bars ineach section are coupled to rock in twogroups. The height at which the grate isplaced allows room, over the trailingtruck, for an unusually deep hopper ashpan. These are the first locomotives to usethe Gaines type of furnace in combinationwith a superheater, and thei
. Railway and Locomotive Engineering. ipes, which arecurved forward at their lower ends andare provided with funnel-shaped air, in its passage upward throughthe wall, is heated to a high it enters the furnace it is projected 1 he grate is divided, by a longitudmalbearer, into two sections; and the bars ineach section are coupled to rock in twogroups. The height at which the grate isplaced allows room, over the trailingtruck, for an unusually deep hopper ashpan. These are the first locomotives to usethe Gaines type of furnace in combinationwith a superheater, and their performancewill be watched with interest. In view ofthe experience previously acquired on theCentral of Georgia, there is every reasonto believe that the new engines will be re-liable in service and economical in fueland water consumption. The following are the principal dimen-sions of this type of locomotive: Gauge.—4 ft. 8^ ins. Cylinders.—23 ins. x 28 ins. Valves.—Balanced piston. Boiler.—Type, straight; material, steel;. F. F. Gaines, Supt. Mo IACII-IC TYlKPower. nVE FOR THE CENTRAL OF GEORGIA RAILWAY. Works, Builde In designing the Gaines firebox, thespecial objects kept in view were to pro-vide sufficient volume for complete com-bustion of the gases, to admit the neces-sary quantity of air to effect such combus-tion, and to direct the course of the gasesso that the entire area of the firebox shellwould be useful as heating surface. Atthe same time the furnace was so de-signed as to avoid troubles from leakage,such as sometimes occur in Wootten boil-ers having combustion chambers extend-ing forward into the boiler barrel. In thenew Pacific type locomotives the fireboxshell bears a close resemblance to themodified Wootten type, as built with astraight tube sheet and sloping back throat is extremely shallow, and themud ring, which is horizontal, is sup-ported on expansion plates at the frontand back. A brick wall is built across backwards by an ove
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