Midland Railway 780 Class

The Midland Railway 780 Class was a class of 0-4-4T steam locomotives. They were built by Dubs & Co. in 1870, and were very similar to the 690 Class. Originally numbers 780–799. They were double-framed engines with a back tank behind the cab under the bunker. They were all originally fitted with condensing apparatus for working the Metropolitan lines.

Midland Railway 780 class
Type and origin Power type Steam Designer Matthew Kirtley Builder Dübs & Co. Serial number 357–376 Build date 1870 Total produced 20
Specifications Configuration: ​  • Whyte 0-4-4WT  • UIC B2′ n2t Gauge 4 ft 8+1⁄2 in (1,435 mm) Driver dia. 5 ft 2 in (1.575 m) Trailing dia. 3 ft 0 in (0.914 m) Wheelbase: ​  • Engine 8 ft 0 in (2.438 m) + 9 ft 9 in (2.972 m) + 5 ft 0 in (1.524 m) Frame type Double frame Loco weight 43 long tons 13 cwt (44.4 t) Fuel type Coal Boiler: ​  • Diameter 4 ft 3 in (1.295 m)  • Tube plates 11 ft 0 in (3.35 m) Heating surface 1,072.7 sq ft (99.66 m2) Cylinders Two, inside Cylinder size 17 in × 24 in (432 mm × 610 mm)
Career Operators Midland Railway London, Midland and Scottish Railway Numbers New: 780–799 1907: 1206–1225 Withdrawn 1921–1935 Disposition All scrapped

In 1898, Nos. 780–783 were transferred to the duplicate list as Nos 780A–783A. Their 1907 numbers were 1206–1225. No. 1212 was withdrawn in 1921, but the remaining 19 were inherited by the London, Midland and Scottish Railway at the Grouping in 1923. They were all withdrawn, and were extinct by 1935.

Table of withdrawals^[1]

Year	Quantity in service at start of year	Quantity withdrawn	Locomotive numbers	Notes
1921	20	1	1212
1924	19	1	1223
1925	18	1	1217
1927	17	1	1213
1928	16	3	1206, 1207, 1224
1930	13	2	1208, 1210
1931	11	4	1214, 1216, 1218, 1225
1932	7	1	1215
1933	6	2	1209, 1220
1934	4	1	1222
1935	3	3	1211, 1219, 1221