There was no heating in trains until 1890. Before then passengers were able to hire foot warmers (steel hot water bottles) [i] The London North Eastern railway employed stokers at main stations to tend boilers supplying hot water to supply company's 20k foot warmers. [ii] The front of the sheet music seems to show the sort of hot water radiators which were installed in Pullman cars. [iii]
References:
[i] Wolmar, Christian - Fire & Steam, A New History of the Railways in Britain (Atlantic Books, 2007)
[ii] Harris, Michael Rolling Stock the Railway User and Competition - in
The Impact of railways on Society in Britain: Essays on Honour of Jack Simmons
[iii] Simmons, Jack - The Victorian Railway (Thames & Hudson, 1995) p85




