B&O #5600 George H. Emerson Type and origin Power type Steam Builder B&O Mount Clare Shops Build date May 1937 Total produced 1
Specifications Configuration: • Whyte 4-4-4-4 • UIC 2′BB2′ Gauge 4 ft 8+ 1 ⁄2 in (1,435 mm ) standard gauge Leading dia. 36 in (914 mm) Driver dia.76 in (1,930 mm) Trailing dia. 42 in (1,067 mm) Minimum curve 13° or 441.68 ft (134.62 m) normal,Length 0+ 1 ⁄4 in (35.67 m)Adhesive weight 238,000 lb (108,000 kilograms; 108 metric tons) Loco weight 386,500 lb (175,300 kilograms; 175.3 metric tons) Tender weight 350,000 lb (160,000 kilograms; 160 metric tons) Total weight 736,500 lb (334,100 kilograms; 334.1 metric tons) Tender type Vanderbilt with two 3-axle trucks Fuel type Coal Fuel capacity 46,000 lb (21,000 kilograms; 21 metric tons) Water cap. 22,000 US gal (83,000 L; 18,000 imp gal) Firebox: • Grate area 80.5 sq ft (7.48 m2 ) Boiler pressure 350 lbf/in2 (2.41 MPa) Heating surface: • Firebox 677 sq ft (62.9 m2 ) • Tubes and flues 4,220 sq ft (392 m2 ) • Total surface 4,897 sq ft (454.9 m2 ) Superheater: • Type B&O • Heating area 1,312 sq ft (121.9 m2 ) Cylinders Four, duplex Cylinder size 18 in × 26.5 in (457 mm × 673 mm) Valve gear Walschaerts
The Baltimore and Ohio Railroad 's sole Class N-1 steam locomotive , #5600 (named "George H. Emerson" ), was the first duplex locomotive and the first 4-4-4-4 locomotive ever built. It was unique in the fact that it had a water tube firebox, which was much larger than a normal firebox. It was designed and built by the railroad's own shops in 1937 .
