The Leeds Intelligencer of Saturday 16 September 1837 reported on the seventh annual meeting of the British Association for the Advancement of Science, which had begun at Liverpool on the previous Monday. The Mechanical Science section met, appropriately, at the Mechanics’ Institution with Professor Robinson of Armagh, President, in the chair.
It heard papers from Mr Williams on the Treffos Pump, Mr Kingsley on the Perspective Drawing Board, Mr Henwood on the Expansive Action of Steam in Cornish Mine Engines and Mr Russell on the Motion of Steamers in Shallow Waters. But the first and greatest paper was not delivered by its author, Mr G Remington [presumably George Remington, railway engineer], who was absent, but by Dr Lardner. Its subject was
… the Railway Balance Lock. The object of this was to do that upon Railways which is accomplished on Canals by means of Locks, namely, to raise the trains to any given height, according to the inequality of that surface.
You can read more about it here; interweb search engines will find more references. Perhaps it is not too late to have this innovation adopted.