Steam wagon production ceased in 1937, and the company was finally dissolved in 1993.
The novel double-ended transverse-mounted boiler was used to avoid problems of tilting when climbing hills.
Internally it resembled a locomotive or Fairlie boiler with a central firebox and multiple fire-tubes to each end.
In the Yorkshire though, a second bank of fire-tubes above returned to a central smokebox and a single chimney.
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