Data from "Locke & Co., Ltd", Locomotives Manufactured by Messrs Kitson & Co Ltd, Leeds. (Many thanks to Sam Eastwood, whose 4 December 2023 email solved the mystery Locobase laid out just below.)Works number 4738 was in 1910.
Locobase could find nothing about the owners of this four-coupled saddle tank. The engine's name suggested that they were located in Newfoundland's capital city, but Locobase couldn't corroborate that. Given the locomotive's size and key power details, perhaps Locke was a mining or logging entity.
More than two years after Locobase submitted this entry, Sam Eastwood sent the following highly illuminating information:
"'Locke & co'" was a mining company in Normanton, England, not Canada, owned by Joseph Locke. He owned a few collieries in the area. Kitson 4738 worked at St Johns colliery just to the west of Normanton as their No 3".
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | St Johns |
| Locobase ID | 16552 |
| Railroad | Locke & Co |
| Country | Canada |
| Whyte | 0-4-0ST |
| Number in Class | 1 |
| Road Numbers | 3 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Kitson & Co |
| Year | 1910 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 6 / 1.83 |
| Engine Wheelbase (ft / m) | 6 / 1.83 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 6 / 1.83 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 58,576 / 26,570 |
| Engine Weight (lbs / kg) | 58,756 / 26,651 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 58,756 |
| Tender Water Capacity (gals / ML) | 996 / 3.77 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.85 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 49 / 24.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 38.50 / 978 |
| Boiler Pressure (psi / kPa) | 140 / 970 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 21" / 356x533 |
| Tractive Effort (lbs / kg) | 12,722 / 5770.61 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.60 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 43 / 3.99 |
| Grate Area (sq ft / m2) | 8.75 / 0.81 |
| Evaporative Heating Surface (sq ft / m2) | 413 / 38.37 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 413 / 38.37 |
| Evaporative Heating Surface/Cylinder Volume | 110.43 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1225 |
| Same as above plus superheater percentage | 1225 |
| Same as above but substitute firebox area for grate area | 6020 |
| Power L1 | 1508 |
| Power MT | 113.51 |