Ilse Mining Stock Company 0-4-0 Locomotives in Germany

Class Details by Steve Llanso of Sweat House Media

Class Ilse (Locobase 21042)

Data from "2/2 gek. Tender-lokomotive fur 500 mm Spurweite", Locomotiven, A Borsig (Tegel bei Berlin, 1898), archived on Historical Railway Images, Flickr, at [], p. 41, last accessed 8 July 2022. Works number was 4473 in January 1895.

Such a small locomotive could only display the basics of steam locomotive design: firebox behind a horizontal multi-tubular boiler, little steam dome, chimney, outside cylinders with valve chests and direct drive through constant-lead gear. Of course, the gear and cab both seemed outsized, the stack resembled a sleekly tapered bud vase, and the tanks barely held 100 US gallons.

Borsig produced few locomotives for the 50 cm gauge. Clearly, the Ilse Bergbau AG intended this engine to support its open pit lignite mining. (IBAG was spun off from Kunheim chemical company in 1888, taking all of the latter's coal processing (including briquette manufacturing) and lignite mining assets.)

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID21042
RailroadIlse Mining Stock Company
Number in Class1
Road Numbers
Gauge50 cm
Number Built1
Valve GearHeusinger
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)11,574 / 5250
Engine Weight (lbs / kg)11,574 / 5250
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)11,574 / 5250
Tender Water Capacity (gals / ML)95 / 0.36
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.30 / 0.30
Minimum weight of rail (calculated) (lb/yd / kg/m)10 / 5
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)23.60 / 600
Boiler Pressure (psi / kPa)217.60 / 15
High Pressure Cylinders (dia x stroke) (in / mm)5.51" x 9.45" / 140x240
Tractive Effort (lbs / kg)2249 / 1020.13
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.15
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) 2.48 / 0.23
Evaporative Heating Surface (sq ft / m2)74 / 6.85
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)74 / 6.85
Evaporative Heating Surface/Cylinder Volume283.74
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation540
Same as above plus superheater percentage540
Same as above but substitute firebox area for grate area
Power L1
Power MT

All material Copyright ©
Wes Barris