LNWR Bloomer Class information

Specifications
Specifications
Configuration:;
• Whyte	2-2-2
• UIC	1A1
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Leading dia.	(a.): 4 ft 6 in (1.372 m); (b.): 4 ft 0 in (1.219 m); (c.): 4 ft 6 in (1.372 m)
Driver dia.	(a.): 7 ft 0 in (2.134 m); (b.): 6 ft 6 in (1.981 m); (c.): 7 ft 6 in (2.286 m)
Trailing dia.	(a.) & (b.): 4 ft 0 in (1.219 m); (c.): 4 ft 6 in (1.372 m)
Loco weight	(a.): 29.5 long tons (30.0 t);; (b.): 23.65 long tons (24.03 t);; (c.): 34.75 long tons (35.31 t)
Boiler pressure	100 psi (0.69 MPa) later increased to 150 psi (1.03 MPa)
Heating surface	(a.): 1,448.5 sq ft (134.57 m2); (b.): 1,230 sq ft (114 m2); (c.): 1,222.8 sq ft (113.60 m2)
Cylinders	Two, inside
Cylinder size	(a.): 16 in × 22 in (406 mm × 559 mm);; (b.): 16 in × 21 in (406 mm × 533 mm);; (c.): 18 in × 24 in (457 mm × 610 mm)
Valve gear	Stephenson

Type and origin
Type and origin
Power type	Steam
Designer	James McConnell
Builder	(a.): Sharp, Stewart & Co. (25); Kitson & Co. (5); Wolverton Works (10); (b.): R and W Hawthorn (7); Vulcan Foundry (4); Wolverton Works (20); (c.):Wolverton Works (3)
Build date	1851–1862
Total produced	(a.): 40; (b): 31; (c): 3

LNWR "Bloomer" Class
LNWR "Bloomer" Class
	No.602 (Small Bloomer class), c.1868
Power type
Type and origin
Power type	Steam
Designer	James McConnell
Builder	(a.): Sharp, Stewart & Co. (25); Kitson & Co. (5); Wolverton Works (10); (b.): R and W Hawthorn (7); Vulcan Foundry (4); Wolverton Works (20); (c.):Wolverton Works (3)
Build date	1851–1862
Total produced	(a.): 40; (b): 31; (c): 3
Configuration:;
Specifications
Configuration:;
• Whyte	2-2-2
• UIC	1A1
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Leading dia.	(a.): 4 ft 6 in (1.372 m); (b.): 4 ft 0 in (1.219 m); (c.): 4 ft 6 in (1.372 m)
Driver dia.	(a.): 7 ft 0 in (2.134 m); (b.): 6 ft 6 in (1.981 m); (c.): 7 ft 6 in (2.286 m)
Trailing dia.	(a.) & (b.): 4 ft 0 in (1.219 m); (c.): 4 ft 6 in (1.372 m)
Loco weight	(a.): 29.5 long tons (30.0 t);; (b.): 23.65 long tons (24.03 t);; (c.): 34.75 long tons (35.31 t)
Boiler pressure	100 psi (0.69 MPa) later increased to 150 psi (1.03 MPa)
Heating surface	(a.): 1,448.5 sq ft (134.57 m2); (b.): 1,230 sq ft (114 m2); (c.): 1,222.8 sq ft (113.60 m2)
Cylinders	Two, inside
Cylinder size	(a.): 16 in × 22 in (406 mm × 559 mm);; (b.): 16 in × 21 in (406 mm × 533 mm);; (c.): 18 in × 24 in (457 mm × 610 mm)
Valve gear	Stephenson
Tractive effort
Performance figures
Tractive effort	various between 5,700 lbf (25 kN) and 11,016 lbf (49.00 kN)
Operators
Career
Operators	LNWR Southern Division
Withdrawn	1866, 1876–1888
Disposition	Original locomotives all scrapped. Replica for static display completed 1991. Full-size working engine under construction

Bloomer was a name used to refer to three similar classes of 2-2-2 express passenger locomotives designed by James McConnell for the Southern Division of the London and North Western Railway (LNWR). A total of seventy-four were built between 1851 and 1862. The classes were similar in design and layout but differed in dimensions.

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