Part 9 – Thompson Boiler Orders (1941-1946)

The Maurice Boddy Collection

A hyphenated class reference (e.g. A10 – A1) denotes the engine classification changed as the result of the boiler change.

Boiler Nos. Blr. Dgm. BO Date Allocation and remarks
9425-34 100A 891 2/10/1941 Original intention not known.  See table below for their allocations
9435-44 100A 892 6/11/1941 Original intention not known.
3 boilers (9441-43) first put to use as late as 1948
X11465-74 114 893 16/5/1942 EO371 for new Class 8F 8510-19, actually fitted to 8511-19
Final boiler (X11474) sent to Gorton
(No. 8510 had received Gorton boiler X11455 instead)
8799 106 – 106A – 10/1942 Boiler rebuilt and fitted to Class P2/A2 No. 2005
9445-54 94A 894 2/11/1942 Spares for Class A3
X11475-84 114 895 23/1/1943 EO373 for new Class 8F 8520-29 
(X11738-47)
X11738-46,
9575		 114 896 23/1/1943 EO374 for new Class 8F 8530-39.
Last boiler instead numbered 9575, and used for Class O6 No. 3148 (see below)
(9455-47)   –   Numbers not used
9458-61 1 897 12/3/1943 Spares for Class C1
9462-71 2 898 12/3/1943 Spares for Class O1 (O3) and O2
9472-76 3 899 12/3/1943 Spares for Class K2. Sent to Cowlairs,
but 9472-74 returned to Doncaster
9477-81 7 Rob 900 12/3/1943 Spares for Class J6
9482-86 94A 901 12/3/1943 Spares for Class A3
9487-89 107 902 12/3/1943 Spares for Class A4
Boiler 9487 used for A10 – A1 No. 4470 (9/1945)
9490-94 7 NS 903 12/3/1943 Spares for Classes D2, J1 and N1
9495-99, 9500-04 9 904 12/3/1943 Spares for Class J52
9505-09 11 905 12/3/1943 Spares for Classes C12 and J50
9510-16 94A 906 11/5/1943 Spares for Class A3
(9517-20) 109 (907) 11/5/1943 reallocated 9543-46, see below
(9518-42)
9518-25
11719/209528-42		 114 –   Boilers built at Brighton.  Intended for Class O6 Nos. 7651-75
9518-25 actually fitted to Nos. 7672/51-57
9526/27 actually sent in error to L.M.S.,
became 11719/20 for Nos. 8660/61
9528-42 actually fitted to Nos. 7658-60/75/61-71
9543-46 109 907 11/5/1843 Spares for Class V2
8796/97/71/85/98 106 – 106A – 9/1943 Boilers rebuilt and fitted to Class P2/A2 Nos. 2006/01/04/03/02
9547-56 96A 908 8/11/1943 Spares for Class K3
Boiler 9547 used for K3 – K5 No. 206 (6/1945)
9557/58 114 –   Boilers built at Brighton (to replace 9526/27).
Used for new Nos. 7674/73
9559 115 911 26/4/1944 EO377 for new Class L1 No. 9000
9560-64 7 Rob 912 10/5/1944 Spares for Classes J2 and J6
(9565-74) (94A) (913) 1/5/1944 Spares for Class A3. Order later amended:
9565
9566-74		 94A
94HP		 913 10/5/1944 (1) spare with perforated steam collector (“banjo dome”)
(9) spares without perforated steam collector
9575 114 –   Boiler from BO896. Fitted to Class O6 3148
(9575-84)

9576-85

 114 909 22/2/1944 EO375 for new Class O6 Nos. 3148-57
Actually fitted to Nos. 3149-58.
(9585-94)

9586-94

 114 910 22/2/1944 EO376 for (10) new Class O6 Nos. 3158-67
Amended (9 only), and fitted to Nos. 3159-67
8934 108 – 108A – c.5/1944 Rebuild the last P2 boiler to provide a spare for Class A2
Only fitted to No. 2002 (6/1944-11/1945)
Spare (11/1945-7/1946) then scrapped
(9595-99, 9600-04)
D series		 117 914 6/6/1944 For EO378 new Class A2 Nos. 200-09 (actual 500, 511-19)
Boilers built at Darlington (their BN98),
given their D series numbers
(9605-09)
D series		 117 915 6/6/1944  For EO379 new Class A2 Nos. 210-14 (actual 520-24)
Boilers built at Darlington (their BN99)
given their D series numbers
4465-74 25A 916 27/9/1944 Spares for Classes B12 and K2.
First 5 boilers sent to Inverurie, last 5 to Stratford
4475-79 25A 917 27/9/1944 Spares for Class K2. Order transferred to Stratford
9610-24 7 Rob 918 20/2/1945 Spares for Classes J6 and N2
9625-29 96A 919 20/2/1945 Marked as renewals for K3’s, 225 lb. pressure
9630-34 7 NS 920 20/2/1945 Spares for Classes D2 and N1
9635-39, (9640-44)
9640-44		 9 921 20/2/1945
19/2/1946		 (10) Spares for Class J52
Order for last 5 transferred to Stratford 19/2/1946,
where they (apparently) still received numbers 9640-44.
Doncaster had meantime reissued these numbers for the next order
9640-44 11 922 20/2/1945 Spares

The initial allocation of the 1st 10 Dgm. 100A boilers built (at Doncaster) was as follows:

Boiler No. Where fitted Engine No. Class Date
9425 Darlington 8301 new B1 12/1942
9426 Darlington 8302 new B1 2/1943
9427 Gorton 6595 O4 – O1 2/1944
9428 Gorton 6166 B3 – B3/3 10/1943
9429 Darlington 2871 B17 – B2 8/1945
9430 Gorton 6244 O4 – O1 4/1944
9431 Darlington 8302 B1 6/1945
9432 Gorton 6334 O4 – O1 5/1944
9433 Darlington 2816 B17 – B2 11/1945
9434 Darlington 2839 B17 – B2 1/1946

Thompson was succeeded by Peppercorn, see PART 10.