Anglo-Chilean Nitrate Kitson-Meyer Locomotives in Chile


Class Details by Steve Llanso of Sweat House Media

Class 10 (Locobase 3262)

See also Robert Tufnell, The Illustrated Encyclopedia of Railway Locomotives (London: Quarto Publishing Ltd, 1986); and Robert Stirling, "The Tocapilla Railway" (Paper 3198), Minutes of Proceedings of the Institution of Civil Engineers, Volume 142 (3 April 1900) pp. 89-102 in Table II, p. 93.

These were the first of the Kitson-Meyer type of locomotive. The Meyer arrangement put two pivoting engine units under one boiler and firebox. Kitsons modified the design by placing the firebox between the engine units and moving the cylinders to the opposite ends (i.e., behind each of the engine units). Although never very numerous, the design served in several climes. On the ANC, the engines were rated at 2,707 long tons on the level and 705 tons up a 1% grade at 10 mph. Tufnell calculated this to correspond to 630 drawbar horsepower.

Anglo-Chilean added six more engines later - four in 1909 from Kitson and two in 1912 from Yorkshire Engine.


Class 23 (Locobase 3619)

Data from Lionel Wiener, Articulated Locomotives (1930, reprinted 1970).

15 years after the ACN&R's FCTT introduced the Kitson-Meyer type of locomotive it returned for more. Dimensions were little changed from the earlier trio.


Class unknown (Locobase 3627)

Data from Lionel Wiener, Articulated Locomotives (1930). See also "Anglo-Chilian Nitrate Rys," The Locomotive, Volume 16 (15 November 1910), p. 236.

In between batches of the all-adhesion Kitson-Meyers it bought over 15 years, the ANC procured some of these leading-truck engines. Spreading the weight over two more axles may have allowed the larger boiler shown in the specifications.

Principal Dimensions by Steve Llanso of Middle Run Media
Class1023unknown
Locobase ID3262 3619 3627
RailroadAnglo-Chilean Nitrate (Tocopilla al Toco Ry)Anglo-Chilean Nitrate (Tocopilla al Toco Ry)Anglo-Chilean Nitrate (Tocopilla al Toco Ry)
CountryChileChileChile
Whyte0-6-0+0-6-0T0-6-0+0-6-0T2-6-0+2-6-0T
Number in Class34
Road Numbers10-1223-26
Gauge3'6"3'6"3'6"
Number Built34
BuilderKitson & CoKitson & CoKitson & Co
Year189419091903
Valve GearWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)13 / 3.9613 / 3.96
Engine Wheelbase (ft / m)28.75 / 8.7646.58 / 14.20
Ratio of driving wheelbase to overall engine wheelbase 0.45 0.28
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)123,872 / 56,187142,464 / 64,621137,760 / 62,487
Engine Weight (lbs / kg)123,872 / 56,187142,464 / 64,621174,496 / 79,150
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)123,872 / 56,187142,464 / 64,621174,496 / 79,150
Tender Water Capacity (gals / ML)2400 / 9.092500 / 9.47
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.30 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)34 / 1740 / 2038 / 19
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)35 / 88935 / 88938.50 / 978
Boiler Pressure (psi / kPa)162.40 / 1120162.40 / 1120184.20 / 1270
High Pressure Cylinders (dia x stroke) (in / mm)14" x 18" / 356x457 (4)14" x 18" / 356x457 (4)15" x 21" / 381x533 (4)
Tractive Effort (lbs / kg)27,829 / 12623.0427,829 / 12623.0438,431 / 17432.03
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.45 5.12 3.58
Heating Ability
Tubes (number - dia) (in / mm)211 - 1.75" / 44206 - 1.75" / 44281 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.26 / 3.4311.06 / 3.3711.88 / 3.62
Firebox Area (sq ft / m2)101 / 9.38104.37 / 9.70125.89 / 11.70
Grate Area (sq ft / m2)24.60 / 2.2925.80 / 2.4034.43 / 3.20
Evaporative Heating Surface (sq ft / m2)1168 / 108.511148 / 106.691655 / 153.81
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1168 / 108.511148 / 106.691655 / 153.81
Evaporative Heating Surface/Cylinder Volume182.10178.98192.66
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation399541906342
Same as above plus superheater percentage399541906342
Same as above but substitute firebox area for grate area16,40216,95023,189
Power L1247124663143
Power MT263.87228.97301.79

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