Twin Sisters (locomotive)

Twin Sisters
A portion of Shaw's "View on the Liverpool and Manchester Railway with the Locomotive Twin Sisters in a Siding" (1830)[1]
Type and origin Power type Steam Designer Robert Stephenson Builder Robert Stephenson and Company Build date 1829
Specifications Configuration: ​  • Whyte 0-6-0 Gauge 4 ft 8+1⁄2 in (1,435 mm) Driver dia. 48 in (1,200 mm) Fuel type coke Boiler pressure 50 psi Cylinders 2 Cylinder size 9 in × 24 in (230 mm × 610 mm)
Performance figures Maximum speed 12 miles per hour (19.3 km/h)
Career Operators Liverpool and Manchester Railway First run 1829 Retired December 1831 (1831-12)

The Twin Sisters was an early steam locomotive, built for use during the construction of the Liverpool and Manchester Railway. It was distinctive for its use of two vertical boilers, with a pair of separate chimneys, leading to its name.