Ahrons (1927) offers this little tank as one of the examples of Indian practice in the 1870s. See "Dubs & Co Glasgow Locomotive Works B30" in Historical Railway Images at [], last accessed 13 June 2026. Works numbers were 736-755 in 1874.
The HRI photograph shows a small, straight boiler with a steam dome positioned directly over the space between the two drivers, a tall, capped stack, and outside cylinders. While many locomotives in the British Isles stlll afforded little protection from the weather, this engine fully enclosed its crew in an elaborately closed-in footplate.Sliding, slatted shutters protected against storms while still ventilating the space.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | B |
| Locobase ID | 3182 |
| Railroad | Indian State |
| Country | India |
| Whyte | 0-4-4WT |
| Number in Class | |
| Road Numbers | B21-B40 |
| Gauge | Metre |
| Number Built | 20 |
| Builder | Dnbs & Co |
| Year | 1874 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| 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) | 29,008 / 13,158 |
| Engine Weight (lbs / kg) | 48,608 / 22,048 |
| 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) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 42 / 1067 |
| Boiler Pressure (psi / kPa) | 140 / 970 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 11" x 18" / 279x457 |
| Tractive Effort (lbs / kg) | 6171 / 2799.12 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.70 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 43 / 4 |
| Grate Area (sq ft / m2) | 7 / 0.65 |
| Evaporative Heating Surface (sq ft / m2) | 427 / 39.68 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 427 / 39.68 |
| Evaporative Heating Surface/Cylinder Volume | 215.67 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 980 |
| Same as above plus superheater percentage | 980 |
| Same as above but substitute firebox area for grate area | 6020 |
| Power L1 | 3178 |
| Power MT | |