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Metropolitan Railway London Underground

 

4-4-0 Tank Locomotive order No. 773 works No 412-429 supplied in 1864

Order No.773 was for eighteen 4'-8½" gauge 4-4-0 tank locomotives works progressive Nos. 412 - 429 supplied in 1864 for passenger use on the London Underground numbered 1 - 18.

These were the first of the "Metropolitan" tanks, BP's 773 class, which were built until 1886. Metropolitan Railway purchased 63 in total; Metropolitan District Railway 54; Midland Railway 6; Rhenische Railway 5; LNWR 16; LSWR 6 & South Eastern 3.

The driving wheels were 5'-9" in diameter and the outside cylinders 17" dia x 24" stroke with a boiler pressure of 120 psi. The engines for the underground were fitted with condensing apparatus.

Information provided by Joe Lloyd