The first commercial use of the Samuda and Clegg patent for the propulsion of trains by atmospheric means was on the railway line between Kingstown (Dun Laoghaire) and Dalkey, opening in 1844 and closing 10 years later.
The great Isambard Kingdom Brunel also tried to use the system on the South Devon Railway in England, where it was a complete failure. This is alleged to be due to the use of insufficiently powered engines in the lineside engine houses used to create the necessary vacuum in the centre pipe, which in turn moved a piston along said pipe to propel the train.
Little remains of the Atmospheric Railway in Dublin today – the station site (still used by Irish Rail as a Permanent Way dumping ground) and the final road overbridge at Dalkey, which has been abandoned for railway purposes are the only significant traces, the cutting in which the line ran having been rebuilt for conventional railway purposes.
At the Didcot Railway Museum in England, they have a section of the pipe used on the South Devon Railway (along with replica broad gauge track).
I availed of the February Bank Holiday to travel to Didcot and took the photograph below of said pipe.
