NSR M Class

Specifications
Specifications
Configuration:;
• Whyte	0-4-4 T
• UIC	B2
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	5 ft 6 in (1,676 mm)
Trailing dia.	3 ft 7 in (1,092 mm)
Wheelbase	Loco: 22 ft 9 in (6.93 m)
Length	35 ft 5 in (10.80 m)
Height	12 ft 10+1⁄2 in (3.92 m)
Loco weight	56 long tons 0 cwt (125,400 lb or 56.9 t) full
Fuel type	Coal
Fuel capacity	2 long tons 15 cwt (6,200 lb or 2.8 t)
Water cap.	1,300 imp gal (5,900 L; 1,600 US gal)
Firebox:
• Grate area	17.8 sq ft (1.65 m2)
Boiler pressure	175 psi (1.21 MPa)
Heating surface:
• Firebox	108.3 sq ft (10.06 m2)
• Tubes and flues	1,011.7 sq ft (93.99 m2)
Cylinders	Two, inside
Cylinder size	18+1⁄2 in × 26 in (470 mm × 660 mm)

Type and origin
Type and origin
Power type	Steam
Designer	John Henry Adams
Builder	NSR Stoke works
Build date	1907–1920
Total produced	5

NSR M Class
NSR M Class
Power type
Type and origin
Power type	Steam
Designer	John Henry Adams
Builder	NSR Stoke works
Build date	1907–1920
Total produced	5
Configuration:;
Specifications
Configuration:;
• Whyte	0-4-4 T
• UIC	B2
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	5 ft 6 in (1,676 mm)
Trailing dia.	3 ft 7 in (1,092 mm)
Wheelbase	Loco: 22 ft 9 in (6.93 m)
Length	35 ft 5 in (10.80 m)
Height	12 ft 10+1⁄2 in (3.92 m)
Loco weight	56 long tons 0 cwt (125,400 lb or 56.9 t) full
Fuel type	Coal
Fuel capacity	2 long tons 15 cwt (6,200 lb or 2.8 t)
Water cap.	1,300 imp gal (5,900 L; 1,600 US gal)
Firebox:
• Grate area	17.8 sq ft (1.65 m2)
Boiler pressure	175 psi (1.21 MPa)
Heating surface:
• Firebox	108.3 sq ft (10.06 m2)
• Tubes and flues	1,011.7 sq ft (93.99 m2)
Cylinders	Two, inside
Cylinder size	18+1⁄2 in × 26 in (470 mm × 660 mm)
Operators
Career
Operators	North Staffordshire Railway ; London, Midland and Scottish Railway
Class	NSR: M Class
Number in class	5
Retired	August 1930 – March 1939
Disposition	All 5 scrapped

Last updated April 07, 2024

The North Staffordshire Railway (NSR) M Class was a class of 0-4-4T steam locomotive designed by John H. Adams, third son of William Adams. It was designed for suburban passenger work on the potteries loop lines. They shared components such as a drumhead smokebox which rested on the saddle and an almost identical boiler with the NSR L class.^[1] The boiler of the M class later became a standard boiler for the NSR, it being used on the NSR's New L class and H class. The M class introduced a new form of cab roof which curved around to join the cab sides, as with the Midland Railway at the time, and was soon copied by the SE&CR.^[2] Five were built between 1907 and 1908 at the NSR's Stoke Works and withdrawals taking place between 1930 and 1939.^[1] None survived into preservation.

All entered the London, Midland and Scottish Railway (LMS) stock upon formation in 1923 with little modification, other than replacing the original Ramsbottom safety valves with Ross-pop type.^[1] With the LMS' policy of standardisation, many NSR classes were prime targets for early scrapping due to the small size of the classes. As a result, all save one was withdrawn by 1936, having been displaced by more modern six-coupled tanks. This last locomotive had the distinction of being the last NSR locomotive to remain in service save for a battery electric shunting engine, but by the final days was itself reduced to shunting duties.^[1]

The livery of the M class was the NSR's Madder Lake with straw lining, and NORTH STAFFORD lettering on the side tanks along with the company crest. The number appeared on the bunker. In LMS days all received the crimson lake passenger livery of the early LMS with large numerals on the side tanks and the company crest on the bunker, but by 1928 they were repainted in plain black with L M S written on the tanks and number on the bunker.^[1]

List of locomotives


NSR number	Built	LMS number	Withdrawn
9	December 1907	1431	January 1936
11	December 1907	1432	October 1935
12	January 1908	1433	October 1935
41	March 1908	1434	March 1939
42	March 1908	1435	August 1930

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References

1 2 3 4 5 Hopkins, Ken (1986). North Staffordshire Locomotives: An Illustrated History. Trent Valley Publications. pp. 56–57. ISBN 0-948131-14-4.
↑ Christiansen, Rex & Miller, Robert William (1971). The North Staffordshire Railway. Newton Abbot, Devon: David & Charles. p. 230. ISBN 0-7153-5121- 4.

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[Hopkins-1] 1 2 3 4 5 Hopkins, Ken (1986). North Staffordshire Locomotives: An Illustrated History. Trent Valley Publications. pp. 56–57. ISBN 0-948131-14-4.

[2] Christiansen, Rex & Miller, Robert William (1971). The North Staffordshire Railway. Newton Abbot, Devon: David & Charles. p. 230. ISBN 0-7153-5121- 4.

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