L&YR Class 3

L&YR Class 3
No. 1093 in photographic paint
Type and origin
Power typeSteam
DesignerJohn Aspinall
Build date1891-1894
Total produced40
Specifications
Configuration:
​
 • Whyte4-4-0
Gauge4 ft 8+1⁄2 in (1,435 mm)
Driver dia.7 ft 3 in (2.210 m)
Loco weight44.8 long tons (45.5 t)
Fuel typeCoal
Boiler pressure180 psi (1.24 MPa)
Cylinders2
Cylinder size18 in × 26 in (457 mm × 660 mm)
Valve gearJoy
Performance figures
Tractive effort14,814 lbf (65.9 kN)
Career
OperatorsL&YR, LMS
Power classLMS 2P
Withdrawn1925-1930
DispositionAll scrapped
L&YR Class 4
Type and origin
Power typeSteam
DesignerGeorge Hughes
Rebuild date1908-1909
Number rebuilt6
Specifications
Configuration:
​
 • Whyte4-4-0
Gauge4 ft 8+1⁄2 in (1,435 mm)
Driver dia.7 ft 3 in (2.210 m)
Loco weight48.75 long tons (49.53 t)
Fuel typeCoal
Boiler pressure180 psi (1.24 MPa)
Cylinders2
Cylinder size19 in × 26 in (483 mm × 660 mm) or
20 in × 26 in (508 mm × 660 mm)
Valve gearJoy or
Walschaerts
Performance figures
Tractive effort17,576 lbf (78.2 kN) (19")
18,290 lbf (81.4 kN) (20")
Career
OperatorsL&YR, LMS
Power classLMS 3P
Withdrawn1925-1926
DispositionAll scrapped

The L&YR Class 3 was a class of 4-4-0 steam locomotives of the Lancashire and Yorkshire Railway introduced in 1891 with forty being built. George Hughes rebuilt six locomotives with superheaters between 1908 and 1909, they were later designated L&YR Class 4. All passed to the London, Midland and Scottish Railway at the grouping in 1923 but were withdrawn by 1930.

Design

Origins

The design originated with a William Barton Wright's 4-4-0 of 1880 with driving wheels of 6 feet 0 inches (1.83 m) and boiler pressure of 140 psi (0.97 MPa). Aspinall then produced a modified version with 6ft wheels which was the basis for the class 3.[citation needed]

Class 3

John Aspinall succeeded Barton Wright in 1886. He initially ordered more locomotives of Barton's Wright's 4-4-0 design. but determined a driving wheels of 7 feet 3 inches (2.21 m) and boiler pressure increased to 160 psi (1.10 MPa) should give increased speed for the same tractive effort.

Class 4

Six locomotives were rebuilt with superheaters by George Hughes between 1908 and 1909. They became L&YR Class 4 in the Hughes classification scheme introduced in 1919. All six passed to the London, Midland and Scottish Railway at the grouping in 1923.

There were two different versions of the rebuild. One had 19" bore cylinders and Joy valve gear. The other had 20" bore cylinders and Walschaerts valve gear.

Numbering

The L&YR numbered them 1093-1229 and then randomly, using numbers between 318 and 498. The LMS numbered its 34 Class 3 locomotives 10150-10183. The six which had been rebuilt to Class 4 were numbered in a separate series, LMS 10190-10195.[citation needed]

Class 4 numbering

L&YR no. LMS no. Cylinders
1112 10190 19"
1110 10191 20"
1104 10192 20"
1098 10193 20"
1105 10194 20"
455 10195 19"

Withdrawal

Withdrawals began in 1925 and the Class 4 superheated locomotives were all withdrawn by 1926. The last members of the type were withdrawn and scrapped in 1930.

References

  1. ↑ Casserley & Johnston (1966), pp. 104–105.
  2. 1 2 Bulleid (1967), pp. 102–103.
  3. ↑ Bulleid (1967), pp. 80–89.
  4. 1 2 Marshall (1972), pp. 256–257.
  5. ↑ Marshall (1972), p. 273.
  6. ↑ Casserley & Johnston (1966), p. 105.
  7. ↑ Marshall (1972), pp. 139–140.

Bibliography