LSWR A12 class

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**LSWR A12 class**
Power type	Steam
Designer	William Adams
Builder	LSWR Nine Elms Works (50) Neilson and Company
Build date	1887–1894
Total production	90
Configuration	0-4-2
UIC classification	B1n
Gauge	4 ft 8½ in (1,435 mm)
Driver size	73 in (1.854 m)
Trailing wheel size	48 in (1.219 m)
Boiler pressure	160 psi (1.10 MPa)
Cylinders	Two, inside
Cylinder size	18×26 in (457×660 mm)
Tractive effort	15,690 lbf (69.79 kN)
Career	London and South Western Railway Southern Railway British Railways
Class	LSWR: A12 SR: A12 BR: 1MT
Nicknames	Jubilees
Retired	1928–1948
Disposition	All scrapped

The A12 locomotives of the London and South Western Railway were built between the years 1887 and 1895 to the design of William Adams. Ninety of the locomotives were built; numbered 527-556 (built at Nine Elms Works); 607-646 (Neilson and Company (although officially known as O4 class); 597-606 and 647-656 (Nine Elms), they were unusual for their time. The wheelbase type (0-4-2) was being built by few of the other railway companies, and were soon being phased out (the Great Northern Railway had 150 such locomotives). They bore the nickname "Jubilees", because the first batch appeared in the Silver Jubilee of Queen Victoria's reign.

Year	Order	Builder	Quantity	LSWR numbers
1887	A12	LSWR Nine Elms	10	527–536
1888	E1	LSWR Nine Elms	10	537–546
1889	M2	LSWR Nine Elms	10	547–556
1893	O4	LSWR Nine Elms	10	597–606
1892–93	—	Neilson & Co. 4506–4545	40	607–646
1894	K6	LSWR Nine Elms	10	647–656

All 90 passed to the Southern Railway in 1923. Withdrawals started in 1928, with four of the class surviving to Nationalisation, but all were withdrawn in the first year of British Railways. None of the locomotives were preserved.

[edit] References

Railway Magazine March 1925

[edit] External links

SEMG details

v • d • e LSWR Locomotive Classes

J.V. Gooch 1841–1850

J.H. Beattie 1850–1871	273 • 302 • 330 • Well Tank

W.G. Beattie 1871–1873

W. Adams 1878–1875	380 • 135 • 395 • 415 • 46 • 445 • 460 • A12 • T1 • O2 • X2 • B4 • T3 • G6 • T6 • X6

D. Drummond 1895–1912	T7 • M7 • 700 • C8 • F9 • T9 • E10 • K10 • K11 (railcar) • L11 • S11 • H12 (railcar) • L12 • F13 • H13 (railcar) • C14 • E14 • G14 • P14 • S14 • T14 • D15

R. Urie 1912–1922	H15 • N15 • S15 • G16 • H16

SE&CR locomotives • LB&SCR locomotives • Southern Railway locomotives