Data from
Works numbers were 1-13 in 1867, 25-26, 29-32, 48-49 in 1868, 195-202, 223-224 in 1871
Chief Engineer August Wohler of the Niederschlesisch-Markische Bahn (Lower Silesia and Brandenburg Railroad) in Prussia produced an engine that combined some of Joseph Hall's designs with his own emphasis on simplicity. The result had a different appearance from Hall's Austrian engines because the slide valves and Allan gear lay inside, the plate frame was unfilled, and Hall's bearing-collar crank design was fitted only to the lead, driving axle.As usual for the time, the steam dome sat just behind the smokebox and the drivers had small splashers. Unlike many designs, this design offered full-height face for the cab, a roof, and small side lights.
Weishaupt arrived first for the NMB and was the first built by Schwarzkopff.
51 2-4-0s went to the Lower Silesia from 1864-1875 with 61 1/2" (1,560 mm) drivers, 35 with the 72.6" drivers described in the specifications from 1869-1871. 29 were built for the Berlin-Potsdam-Magdeburg Railroad where they were regarded as powerful, but not steady enough at high speeds. 55 more were build for the Breslau-Freiburg Railroad.
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | Series 445-453 |
Locobase ID | 631 |
Railroad | Niederschlesisch-Markische Bahn |
Country | Germany |
Whyte | 2-4-0 |
Number in Class | 170 |
Road Numbers | |
Gauge | Std |
Number Built | 170 |
Builder | Schwartzkopff |
Year | 1867 |
Valve Gear | Allan |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 8.15 / 2.48 |
Engine Wheelbase (ft / m) | |
Ratio of driving wheelbase to overall engine wheelbase | |
Overall Wheelbase (engine & tender) (ft / m) | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 55,213 / 25,044 |
Engine Weight (lbs / kg) | 85,069 / 38,587 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 46 / 23 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 72.60 / 1845 |
Boiler Pressure (psi / kPa) | 149.40 / 1030 |
High Pressure Cylinders (dia x stroke) (in / mm) | 17.5" x 20.6" / 445x525 |
Tractive Effort (lbs / kg) | 11,035 / 5005.40 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.00 |
Heating Ability | |
Tubes (number - dia) (in / mm) | |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | |
Firebox Area (sq ft / m2) | |
Grate Area (sq ft / m2) | 15.80 / 1.47 |
Evaporative Heating Surface (sq ft / m2) | 1153 / 107.16 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 1153 / 107.16 |
Evaporative Heating Surface/Cylinder Volume | 201.05 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 2361 |
Same as above plus superheater percentage | 2361 |
Same as above but substitute firebox area for grate area | |
Power L1 | |
Power MT |