LSWR 460 class

The LSWR 460 class was a class of express passenger 4-4-0 steam locomotives designed for the London and South Western Railway by William Adams. Twenty were constructed by Neilson and Company and Robert Stephenson and Company in 1884 and one in 1887.

LSWR 460 class
Type and origin Power type Steam Designer William Adams Builder Neilson & Co. (10), Robert Stephenson & Co. (11) Serial number Neilson 3190–3199, RS 2561–2570, 2650 Build date 1884 (20), 1887 (1) Total produced 21
Specifications Configuration: ​  • Whyte 4-4-0  • UIC 2′B n2 Gauge 4 ft 8+1⁄2 in (1,435 mm) Leading dia. 3 ft 4 in (1.016 m) Driver dia. 6 ft 7 in (2.007 m) Length 51 ft 11+3⁄8 in (15.83 m) Height 13 ft 2+3⁄4 in (4.03 m) Axle load 15.25 long tons (15.49 t) Adhesive weight 29.80 long tons (30.28 t) Loco weight 45.75 long tons (46.48 t) Tender weight 28.90 long tons (29.36 t) Fuel type Coal Water cap. 2,350 imp gal (10,700 L; 2,820 US gal) Boiler pressure 160 psi (1.10 MPa) Cylinders Two, outside Cylinder size 18 in × 24 in (457 mm × 610 mm)
Performance figures Tractive effort 13,387 lbf (59.5 kN)
Career Operators LSWR · SR Class 460 Power class SR: K Withdrawn 1924–1929 Disposition All scrapped

Adams had originally ordered ten locomotives from each manufacturer in 1884. In 1887, Robert Stephenson and Company built an additional locomotive for display at a Jubilee exhibition in Newcastle upon Tyne, after which it was sold to the LSWR.^[1] The class were numbered 147, 460–478 and 526, and were a small-wheeled version of the 445 class.

Table of locomotive orders

Year	Builder	Quantity	LSWR Numbers	Notes
1884	Neilson & Co. 3190–3199	10	460–469
1884	Robert Stephenson & Co. 2561–2570	10	147, 470–478
1887	Robert Stephenson & Co. 2650	1	526	Former exhibition locomotive

All except 526 were renumbered into the duplicate list as 0147, 0460–0478 between 1908 and 1924.

All passed to the Southern Railway at the grouping in 1923. Withdrawals started the following year with the last two, 467 and 470 being withdrawn and scrapped in 1929.

Table of withdrawals

Year	Quantity in service at start of year	Quantity withdrawn	Locomotive numbers	Notes
1924	21	1	E0465
1926	20	5	E0461, E462A, E0463, E475A, E0476
1927	15	5	E0147, E464A, E0469, E0472, E0477
1928	10	7	E0466, E0468, E0471, E473A, E0474, E0478, E526
1929	3	3	E0460, E0467, E0470