PENNSYLVANIA RAILROAD MOTIVE POWER

PRR JUNIATA SHOPS J1 class 2-10-4 "Texas" type steam locomotive

History / Profilo storico

The great efforts of american railroads during the Second World War, has forced many companies to supplies constants, especially that concerned the traction of the freight trains. The Pennsylvania Railroad, obligated by the wartime restrictions, has ordered a variant of the T1 class 2-10-4 "Texas" type steam locomotive in service with the Chesapeake and Ohio Railroad. The new engine, denominated J1 class and built at the Altoona Juniata Shops, received cast iron number and badge plates of "keystone" type (as the passengers steam locos) but its primary role was hauling of heavy freight trains on the PRR's main lines.
The PRR built 125 engines (65 J1 and 65 J1a) between 1942-1944.
Altoona Shops started delivering the new 2-10-4s in late 1942 with road numbers 6450 through 6455, and designated as Class J-1 and sent to the St. Louis Division. Immediately afterwards, an order for another version was begun, Class J1a. Sixty of these were built and were assigned road numbers 6475 - 6498, 6401 - 6434 and 6499 - 6500. The only difference between the J1 and the J1a was that the J1a used carbon boiler plate while the J1 used carbon-silicon boiler plate. Forty additional locomotives were ordered and received road numbers 6435 - 6449 and 6150 - 6174. All J1's and J1a's were built at Altoona and employed Baker valve gear. Their tenders were of PRR design. Classified 210F84, these tenders were specifically designed for these huge engines. Their water capacity was 29,000 gallons and their coal capacity was 29.9 tons.
The J1 and J1a locomotives spent the war years hauling freight on the railroad west of Altoona. Fifty five were assigned to the Central Region spread among the Western Pennsylvania Division/Pittsburgh Division, the Eastern Ohio Division/Eastern Division, the Eastern Ohio Divisions/Panhandle Division and the Lake Division/Cleveland Division. The other seventy were assigned to the Western Region spread among the Northwestern Division/Toledo Division, the Northwestern Division/Ft Wayne Division, the Northwestern Division/Logansport Division and the Southwestern Division/St. Louis Division
After the war many types of steam locomotives were displaced by diesels but the PRR found uses for the J1 class until they were retired in the late 1950s (the last J1 was scrapped in 1959). There are no surviving examples of the PRR's 2-10-4s.


Il grande sforzo delle ferrovie statunitensi durante la seconda guerra mondiale, costrinse le compagnie ad approvvigionamenti costanti, specialmente per quello che riguardava la trazione dei treni merci. La Pennsylvania Railroad, obbligata dalle restrizioni del periodo bellico che limitava lo studio e la progettazione agli ingegneri, ordinò una variante della famosa locomotiva 2-10-4 T1 classe "Texas" in servizio con la Chesapeake & Ohio Railroad. La nuova macchina, denominata J1, e costruita presso i Juniata Shops di Altoona, aveva il caratteristico "Keystone number plate" tipico delle locomotive a vapore destinate alla trazione dei treni passeggeri, ma il suo ruolo principale era la condotta dei pesanti treni merci sulle linee principali. Il loro tender, classificato 210F84, è stato progettato specificamente per queste grosse macchine. Avevano una capacità di trasporto carbone di 29,9 tonnellate, mentre potevano trasportare 29.000 galloni d'acqua (circa 110.000 litri).
La PRR costruì in totale 125 locomotive "Texas" (65 J1 e 60 J1a) tra il 1942 e il 1944. Le consegne da Altoona iniziarono nel tardo 1942 con le prime sei macchine. In seguito, fu prodotta la versione J1a che si differenziava dall'originaria J1 solo per poche modifiche. Tutte le locomotive 2-10-4 prodotte dalla PRR ad Altoona erano dotate di distribuzione a valvole di tipo Baker.
Le J1 e J1a spesero la loro vita in servizio trainando lunghi treni merci sulle linee ad ovest di Pittsburgh. Dopo la guerra inizio la radiazione di molti tipi di locomotive a vapore a favore delle locomotive diesel ma la PRR riservò alle J1 un uso intenso fino alla fine degli anni cinquanta (l'ultima J1 fu rottamata nel 1959). Oggi, non esistono esemplari di locomotive 2-10-4 impiegate dalla Pennsylvania Railroad, in stato di conservazione.

Specifications / Specifiche tecniche

BuildersPRR Juniata Shops
Production1942-1944
Total prod.65 Type J1
60 Type J1a
PRR roster125 (1943-1958)
Wheels2-10-4 (UIC 1-E-2)
Loco weight579.975 lb (no tender)
Lenght117 ft 8 in
PowerCoal
Gauge4 ft 8,5 in 
Driver diameter69"
Cylinders2 (29x34 in)
Valve gearBaker
Pressure270 psi
Tractive effort95.100 lbf
CostruttoriPRR Juniata Shops
Produzione1942-1944
Prod. totale65 tipo J1
60 tipo J1a
Quantità PRR598 (1943-1958)
Rodiggio2-10-4 (UIC 1-E-2)
Peso263.100 kg (no tender)
Lunghezza35,86 mt
CombustubileCarbone
Scartamento1,435 mt
Diametro
ruote motrici
1,75 mt
Cilindri2 (0,737 x 0,864 mt)
DistribuzioneBaker
Pressione1,86 MPa
Potenza423,00 kn
PRR J1 #6173 data /dati

Road Number:

6173

Road Number Sequence:

1st

Type:

2-10-4

Class:

J1

Builder:

Juniata

Built:

1944

CN:

4533

Disposition:

retired 10/57
sold for scrapped 2/58

Previous Owner:

 

Remarks:

retired 10/57
sold for scrapped 2/58

Serial Number:

11037

Assignment 1953/1957

Pittsburgh Region/Division
  

PRR J1/J1a roster

ClassQty.Road NumberYear Built Builder Notes
J166450-64551942PRR1
J1196456-64741943PRR1
J1a266475-65001943PRR1
J1a346401-64341943PRR1
J1156435-64491943PRR1
J176150-61561943PRR1
J1186157-61741944PRR1
Source www.steamlocomotives.com. All rights reserved.
Photogallery / Galleria immagini
Broadway Limited Imports J1 PRR #6173

WEATHERING CARD
      


J1 Pennsylvania Railroad #6474
Photo www.billspennsyphotos.com - All rights reserved.

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