[dwb]

QUOTE Strange that superheating was initially omitted;
Could that have been due to the cost of licensing a patent?

David

 

[dwb]

QUOTE Wide application only occured once patent rights had expired.

IIRC, the superheater patent ran out in the late teens.

David

 

[dwb]

Thanks for the information. There seems to have been a lot of work going on in that period all over Europe into how to make steam locomotives more efficient. It would be interesting to read an account that covered the whole of Europe and not just one country or region.

David