Brunel on the Great Western railway, where, however, it was abandoned after the line was converted from broad to standard gauge in 1892.
Brunel laid out the Great Western for a long distance out of London with a ruling gradient of i in 1320.
Brunel adopted for the Great Western railway disappeared on the 20th-23rd of May 1892, when the main line from London to Penzance was converted to standard gauge throughout its length.
Brunel for the construction of the original Thames tunnel, and it was afterwards improved by Beach, of New York, and finally developed by Greathead.
Brunel, was preparing to put the plan to practical test when the discovery that it had already been patented caused him to abandon his intention, until about 1877.