Difference between revisions of "GWR Coaching Stock and Wagon Diagrams"
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[[File:GWR_Diagram_AA15.jpg|thumb|300px|right|GWR Wagon Diagram AA15, 20 Ton 'Toad' brake van, August 1918]] | [[File:GWR_Diagram_AA15.jpg|thumb|300px|right|GWR Wagon Diagram AA15, 20 Ton 'Toad' brake van, August 1918]] | ||
− | '''GWR Diagram codes''' were introduced by George Jackson Churchward to allow easy reference to different types of coaching stock. The Diagram Code for each type consisted of one or two letters which represented the general category, and a number which denoted particular design of that type, such as A28 or DD3.<ref>[https://en.wikipedia.org/wiki/Coaches_of_the_Great_Western_Railway#Diagram_codes Wikipedia]</ref>. The Diagram Index for wagons was first prepared circa 1905, followed by a similar index for | + | '''GWR Diagram codes''' were introduced by George Jackson Churchward to allow easy reference to different types of coaching stock. The Diagram Code for each type consisted of one or two letters which represented the general category, and a number which denoted particular design of that type, such as A28 or DD3.<ref>[https://en.wikipedia.org/wiki/Coaches_of_the_Great_Western_Railway#Diagram_codes Wikipedia]</ref>. The Diagram Index for wagons was first prepared circa 1905, followed by a similar index for carriages around 1910.<ref>[[Bibliography#Other References|Atkins, Beard & Tourret (2013)]] pp. 490-494.</ref> |
The numbering schemes used for coaching stock and wagons ran in parallel, so the same codes appeared in both. Thus on the SVR, [[GWR 1257 Siphon G Bogie Milk Van | Siphon G 1257]] was built to Coaching Stock diagram O11 while [[GWR 13154 5 plank Open Goods Wagon | 5-plank Open Wagon 13154]] was built to Wagon diagram O11. The GWR Diagram Book which listed the diagrams typically allocated a page for each diagram which showed its major dimensions and characteristics. | The numbering schemes used for coaching stock and wagons ran in parallel, so the same codes appeared in both. Thus on the SVR, [[GWR 1257 Siphon G Bogie Milk Van | Siphon G 1257]] was built to Coaching Stock diagram O11 while [[GWR 13154 5 plank Open Goods Wagon | 5-plank Open Wagon 13154]] was built to Wagon diagram O11. The GWR Diagram Book which listed the diagrams typically allocated a page for each diagram which showed its major dimensions and characteristics. | ||
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| F || Steam roller trucks || || | | F || Steam roller trucks || || | ||
|- | |- | ||
− | | G || | + | | G || Road vehicles || [[GWR 41990 'Loriot Y' Machinery Truck | 41990]], [[GWR 42138 'Loriot D' Machinery Truck | 42138]], [[GWR 42272 'Loriot L' Machinery Truck | 42272]], [[GWR 42343 Machinery Flat | 42343]], [[GWR 65801 Mogo Van | 65801]] || Flat and well wagons to carry large road vehicles, covered trucks for motor cars etc. |
|- | |- | ||
| H || Flat wagons || [[GWR 39860 'Conflat' Container Wagon | 39860]] || | | H || Flat wagons || [[GWR 39860 'Conflat' Container Wagon | 39860]] || | ||
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| K || Crane testing wagons || || | | K || Crane testing wagons || || | ||
|- | |- | ||
− | | L || Match trucks || || | + | | L || Match trucks || || Where built for that purpose. Often adapted from other Diagrams, such as [[GWR 2501 'Rotank' 6-Wheeled Road Milk Tank Flat Wagon|2501]] |
|- | |- | ||
| M || Shunters trucks || [[GWR 41736 Shunters Truck | 41736]] || | | M || Shunters trucks || [[GWR 41736 Shunters Truck | 41736]] || | ||
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| N || Coal and mineral wagons || [[GWR 83831 Loco Coal Wagon | 83831]] || | | N || Coal and mineral wagons || [[GWR 83831 Loco Coal Wagon | 83831]] || | ||
|- | |- | ||
− | | O || Open merchandise wagons || [[GWR 2504 Milk Tank Wagon | 2504]], [[GWR 13154 5 plank Open Goods Wagon | 13154]], [[GWR 25190 5 plank Open Goods Wagon | 25190]], [[GWR 94059 China Clay Open Wagon | 94059]], [[GWR 97398 5 plank Open Goods Wagon | 97398]], [[GWR 98480 5 plank Open Goods Wagon | 98480]], [[GWR 99965 Open 'C' Goods Wagon | 99965]], [[GWR 102691 5 plank Open Goods Wagon | 102691]], [[GWR 108085 5 plank Open Goods Wagon | 108085]] || | + | | O || Open merchandise wagons || [[GWR 2504 Milk Tank Wagon | 2504]], [[GWR 13154 5 plank Open Goods Wagon | 13154]], [[GWR 25190 5 plank Open Goods Wagon | 25190]], [[GWR 94059 China Clay Open Wagon | 94059]], [[GWR 97398 5 plank Open Goods Wagon | 97398]], [[GWR 98480 5 plank Open Goods Wagon | 98480]], [[GWR 99965 Open 'C' Goods Wagon | 99965]], [[GWR 102691 5 plank Open Goods Wagon | 102691]], [[GWR 108085 5 plank Open Goods Wagon | 108085]], [[GWR 2501 'Rotank' 6-Wheeled Road Milk Tank Flat Wagon|2501*]] || *Now used as a match truck |
|- | |- | ||
| P || Ballast and sand wagons || [[GWR 30903 Ballast Wagon | 30903]], [[GWR 40841 Ballast Wagon | 40841]], [[GWR 60562 Ballast Wagon | 60562]], [[GWR 60906 Ballast Wagon | 60906]], [[GWR 80225 Ballast Wagon | 80225]], [[GWR 80603 Ballast Wagon | 80603]], [[GWR 80684 Ballast Wagon | 80684]] || | | P || Ballast and sand wagons || [[GWR 30903 Ballast Wagon | 30903]], [[GWR 40841 Ballast Wagon | 40841]], [[GWR 60562 Ballast Wagon | 60562]], [[GWR 60906 Ballast Wagon | 60906]], [[GWR 80225 Ballast Wagon | 80225]], [[GWR 80603 Ballast Wagon | 80603]], [[GWR 80684 Ballast Wagon | 80684]] || | ||
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| X || Meat vans ||[[GWR 105873 'Mica B' Refrigerated Meat Van | 105873]] || | | X || Meat vans ||[[GWR 105873 'Mica B' Refrigerated Meat Van | 105873]] || | ||
|- | |- | ||
− | | Y || Fruit vans || [[GWR 2303 Fruit Van | 2303]], [[GWR 2424 Fruit Van | 2424]], [[GWR 2815 Fruit C Van | 2815]], [[GWR 3429 Fruit D Van | 3429]], [[GWR 3467 Fruit D Van | 3467]], [[GWR 134290 Fruit A Van | 134290]] || | + | | Y || Fruit vans || [[GWR 2303 Fruit Van | 2303]], [[GWR 2424 Fruit Van | 2424]], [[GWR 2815 Fruit C Van | 2815]], [[GWR 3429 Fruit D Van | 3429]], [[GWR 3467 Fruit D Van | 3467]], [[GWR 134290 Fruit A Van | 134290]] || [[GWR/BR 92080 Fruit D Van|92080]] and [[GWR/BR 92080 Fruit D Van|92090]] were built in 1958 to BR Diagram 805 |
|- | |- | ||
| Z || Gunpowder vans || || 'Improvised' gunpowder vans are under Diagram V | | Z || Gunpowder vans || || 'Improvised' gunpowder vans are under Diagram V |
Latest revision as of 13:54, 21 October 2022
GWRGreat Western Railway Diagram codes were introduced by George Jackson ChurchwardGeorge Jackson Churchward, Chief Mechanical Engineer (CME) of the Great Western Railway 1902-1922 to allow easy reference to different types of coaching stock. The Diagram Code for each type consisted of one or two letters which represented the general category, and a number which denoted particular design of that type, such as A28 or DD3.[1]. The Diagram Index for wagons was first prepared circa 1905, followed by a similar index for carriages around 1910.[2]
The numbering schemes used for coaching stock and wagons ran in parallel, so the same codes appeared in both. Thus on the SVRSevern Valley Railway, Siphon G 1257 was built to Coaching Stock diagram O11 while 5-plank Open Wagon 13154 was built to Wagon diagram O11. The GWRGreat Western Railway Diagram Book which listed the diagrams typically allocated a page for each diagram which showed its major dimensions and characteristics.
Coaches and Wagons (and also locomotives and tenders) were generally built in batches known as Lots, with each lot number being allocated in sequence when ordered. The four groups of Lot numbers also ran in parallel. Some designs which pre-dated the introduction of Diagram Codes were never allocated Diagram codes even if construction continued after that time and were identified by their 'old series' Lot number. SVRSevern Valley Railway examples include GWR 41277 of 1890.
Other railway companies used broadly similar systems of Diagrams and Lots, although using different combinations of letters and numbers.
Coaching stock diagrams
The table below shows the letters allocated to each category and the examples currently resident on the SVRSevern Valley Railway.
Diagram | Description | SVRSevern Valley Railway Examples | Notes |
---|---|---|---|
A | Bogie first class | 178, 238 | |
B | Bogie second class | ||
C | Bogie third class | 829, 1086, 1087, 1116, 1146, 2119, 2426, 3930, 4786 | |
D | Bogie brake third | 650, 2233, 2242 5804, 5883 | |
E | Bogie composite and Brake composite | 6045, 6562, 6913, 7284 | |
F | Slip coach | ||
G | Saloon | 9055, 9103, 9369 | |
H | Catering vehicle | 9581, 9615, 9627, 9653, 9654 | |
J | Sleeping car | 9084, 9085 | |
K | Passenger brake van | 98, 261, 1145 | |
L | Mail van | ||
M | Bogie parcels van (and similar) | ||
N | Horse box | ||
O | Milk van / tank | 1257, 1399, 2926 | |
P | Carriage truck | ||
Q | Inspection saloon | 80969, 80972 | |
R | 4-wheeled first class | ||
S | 4-wheeled third class | ||
T | 4-wheeled brake third | ||
U | 4-wheeled composite / brake composite | ||
V | 4-wheeled brake van | ||
W | Parcels and Miscellaneous van |
Wagon diagrams
The table below shows the letters allocated to each category and the examples currently resident on the SVRSevern Valley Railway.
Diagram | Description | SVRSevern Valley Railway Examples | Notes |
---|---|---|---|
A | Girder Wagons | Articulated wagons for boilers, guns, bridge girders etc. | |
B | Armour plate and roll wagons | ||
C | Boiler trucks and trolleys | ||
D | Plate glass wagons | ||
E | Wheel and propeller wagons | ||
F | Steam roller trucks | ||
G | Road vehicles | 41990, 42138, 42272, 42343, 65801 | Flat and well wagons to carry large road vehicles, covered trucks for motor cars etc. |
H | Flat wagons | 39860 | |
J | Rail and timber wagons | 60841, 107291 | |
K | Crane testing wagons | ||
L | Match trucks | Where built for that purpose. Often adapted from other Diagrams, such as 2501 | |
M | Shunters trucks | 41736 | |
N | Coal and mineral wagons | 83831 | |
O | Open merchandise wagons | 2504, 13154, 25190, 94059, 97398, 98480, 99965, 102691, 108085, 2501* | *Now used as a match truck |
P | Ballast and sand wagons | 30903, 40841, 60562, 60906, 80225, 80603, 80684 | |
Q | Provender wagons | ||
R | Manure wagons | ||
S | Fish wagons | ||
T | Permanent way wagons | 14428, 40554 | |
U | Stone wagons | ||
V | Covered goods vans | 58725, 65620, 82554, 93016, 93045, 95353, 101961, 103592, 104621, 112889 | |
W | Cattle trucks | ||
X | Meat vans | 105873 | |
Y | Fruit vans | 2303, 2424, 2815, 3429, 3467, 134290 | 92080 and 92090 were built in 1958 to BRBritish Rail or British Railways Diagram 805 |
Z | Gunpowder vans | 'Improvised' gunpowder vans are under Diagram V | |
AA | Brake vans | 17410, 40362, 68501 | |
BB | Stores vans | ||
CC | Tool and workshop vans | 14984, 80982 | |
DD | Tank wagons | 43989, 80990 | |
EEEnglish Electric | Flat wagons for tanks | ||
FF | Trestle plate wagons |
See also
References
- ↑ Wikipedia
- ↑ Atkins, Beard & Tourret (2013) pp. 490-494.
Links
- Great Western Railway wagons: Diagram codes on Wikipedia
- Coaches of the Great Western Railway: Diagram codes on Wikipedia