The Works Of Messrs. Schneider And Co.

108 MESSES. SCHNEIDER AND CO.’S WORKS. exhaust is of the variable type, and can be controlled from the drivers footplate. Steam admission to the cylinders is regulated by Walschaert’s gear, and, as shown in Fig. 288, the valves are cylindrical ; an air valve is placecl on each steam admission pipe to allow the entrance of air during admission, when the engine Works with a closed regulator. The reversing gear is operated by a quick- motion screw. This engine and the otliers built on the same patterns are provided with a Wenger compressed-air brake, of the model prescribed by the French State rail- ways. A continuons acting Bourdon lubricator is adapted to the slide valves, and is operated off the link motion. The following are some of the leacling particulars of this locomotive : Boiler : Length between tube plates 3.582 m. 11 ft. 9 in. Mean diameter of barrel 1.380 ni. 4 ft. 6.3 in. Total length of boiler 6.865 m. 22 ft. 6.25 in. Length of outside firebox i 2.240 m. 7 ft. 4.11 in. Width „ „ 1.192 ni. 3 ft. 11 in. Thickness of plates, barrel ... .017 ni. .67 in. ,, ,, back of firebox .017 m. .67 in. shell ... .017 m. .67 in. Thickness of plates, front of firebox shell ... .019 m. .75 in. Thickness of plates, sides of firebox shell .025 m. .98 in. Thickness of plates, front tube-plate (copper) 2.300 m. 7 ft. 6 J in. Height from rails to centre of boiler Diameter of steam dorne .700 m. 27.56 in. Height ,, ,, .940 m. 37.0 in. Firebox (Copper) : Length ... 1.995 m. 6 ft. G. 54 in. Width .990 m. 38.97 in. Weight at back 1.878 m. 6 ft. 2 in. Grate area 2.05 sq. m. 22.066 sq. ft. Thickness of tube-plate .030 m. 1.18 in. ,, back ,, .016 m. .63 in. „ side ,, .018 m. .71 in. Width of water space front and baok .080 m. 3.15 in. Tubes : Number of tubes (Serve type) 111 111 Outside diameter of tubes ... .065 m. 2.56 in. Smokebox : Length ... 1.125 m. 3 ft. 8.28 in. Diameter 1.414 m. 4 ft. 7.64 in. Cylinders : Diameter .440 m. 17.32 in. Length of stroke .660 m. 25.59 in. Distance from centre to centre of cylinders 1.900 m. 74.80 in. Distance from centre to centre of valve spindles ... 2.300 m. 90.55 in. Frames : Total length of frame 9.680 m. 31 ft. 9.11 in. Clear distance between frames 1.230 m. 4 ft. 0.42 in. Thickness of frames .030 m. 1.18 in. Height of bufiers above rail... 1.040 m. 3 ft. 5 in. Distance between buffers 1.730 in. 5 ft. 8 in. Width of floor plate ... 2.730 m. 8 ft. 11.5 in. Thickness of truck frame .025 m. .98 in. Width of truck frame 0.86 m. 33.86 in. Height from rails to footplate 1.835 m. 72.28 in. IVheds : Number of coupled wheels ... 4 4 ,, truck ,, 4 4 Diameter of coupled wheels 2.030 m. 79.92 in. „ truck wheels .960 m. 37.79 in. Distance between coupled wheels ... 2.700 m. 8 ft. 10.30in. >> >, truck ,, 2.000 m. 6 ft. 6.74 in. Distance between front driving and gear truck wheel 2.550 m. 8 ft. 4.40in. Total wheel base ... 7.25 m. 23 ft. 9.44 in. Diameter of driving axles .180 m. 7.08 in. ,, truck ,, .140 m. 5.51 in. Heating Surface: Firebox... Tube (including ribs) Total heating surface... 11.10 sq. m. 147 sq. m. 158.10 sq.m. 119.47 sq. ft. 1582.3 sq.ft. 1701.77 sq.ft. Volume of Boiler: Water ... 4.040 c.m. 142.67 c. ft. Steam ... 2.140 c.m. 75.57 c. ft. Total 6.180 c.m. 218.24 c. ft. Effective steam pressure 14 kilos per 199.122 Ib. sq. cent. per sq. in. Tractive effort with 55 per cent. admission 6,050 kilos. 5 tons 19 cwt Weight ef engine, empty 46,600 kilos. 44 tons 17 cwt ,, ,, in working order 50,200 kilos. 49 tons 8 cwt Gauge ... 1.450 m. 4 ft. 9 in. Length over buffers ... 10.295 ni. 33 ft. 9.25 in. Height from rail to top of chimney 4.400 m. 14 ft. 5.18 in. III.—STATIONARY ENGINES. Messrs. Schneider and Co. have constructed nearly 900 stationary engines of varions kinds, and representing over 115,000 horse-power. The most numerous have been factory engines, of which 268 have been built, averaging about 130 horse-power. Winding engines have numbered 112, and these include several constructed for the company’s own mines. Steam pumping engines figure for 9,000 horse- power. The following is a classified list of the stationary engine production : Number. Horse-powei*. Winding engines ... 112 5,100 Bio wing engines ... 109 38,200 Factory engines ... 268 34,500 Rolling mill engines... 93 25,650 Steam pumping engines ... 139 9,050 Miscellaneous ... 169 3,100 Total ... 890 115,600 Winding Engines.—As an example of the type of winding engine constructed by Messrs. Schneider and Co., may be described one built a few years ago for the Beaubrun coal mines, in the district of St. Etienne. The plant consista of two-coupled horizontal engines, capable of hauling per day of eight hours, 1,000 tons of coal, from a depth of 500 metres (1,640 ft.). m. in. Diameter of cylinders.............. 0.800 31| Stroke ............................ 1.600 63 The speed is 65 revolutions per minute when hauling from the depth of 500 metres. In designing these engines, Messrs. Schneider and Co. had specially in view economical working as regards con- sumption of steam, coinbined with a simple type of mechanism, and accuracy in running, the latter being one of the most important conditions required of engines of this kind. They are expansion engines; the steam inlet and outlet ports have a large section and the dead spaces have been reduced to a minimum. The steam distribution is effected by means of the usual type of slide valves. Complicated mechanisms such as the Corliss and Sulzer types ; valve distribution with cams or eccentrics ; distribution by means of two slide valves one over the other, &c.—were set aside as costly and requiring too minute attention, and as not being neces- sary for obtaining the low degrees of expansion at which