James Foster, an ironmaster, and John Urpeth Rastrick, an engineer, became partners in 1816, forming the company in 1819.

Shortly afterwards (1817) Rastrick left the partnership with Hazledine's company and moved to West Bromwich.

It had the facilities to produce cast industrial components including beams, cylinders and flywheels as well as some household items.

[1] At the end of the 1820s, Foster, Rastrick and Company produced steam locomotives intended for two railways: one in the USA and one just a few miles from the works at Stourbridge.

[2] The Foster, Rastrick and Company built only four steam locomotives (each one having vertical cylinders, placed at the back and each side of the furnace, with grasshopper beams and connecting-rods from them to the crankpins in the four coupled wheels).

Jervis entrusted an assistant, Horatio Allen, who was already planning to visit England, to purchase rail and a locomotive.

The fourth locomotive, Agenoria, was built for service on the Earl of Dudley's Shutt End Colliery Railway in Kingswinford, Staffordshire.

On the opening day, which according to Aris's Gazette, took place "amidst an immense concourse of spectators from the surrounding country", the locomotive first pulled eight carriages filled with 360 passengers along the level section at a rate of 7.5 miles an hour.

Marten, obtained the permission of the owner William Orme Foster to reassemble the engine and display it at an exhibition in Wolverhampton in 1884.

[7] Ceasing locomotive work, the company was officially dissolved on 20 June 1831, its assets being absorbed into the Stourbridge Iron Works of John Bradley & Co. (iron manufacturer and owner of several coal mines),[7] where James Foster was already the major partner and after 1832 the sole owner.

The original factory building in Lowndes Road where Stourbridge Lion and Agenoria were built is still standing, although near to collapse from a fire in 2004.