|
|
|
|
GWR Route: Banbury to Wolverhampton
GWR Route: North Warwickshire Line
Birmingham Snow Hill Station: gwrbsh1740
Great Western Railway photograph of the facing switch point
machine adjacent to the Birmingham South Signal Box with the cast iron control
boxes hinged open to expose the internal parts. These point machines were
installed by Siemens a few years after the Birmingham North Signal Box system
and had incorporated some modifications, but operation was very similar with an
electric motor driving a magnetic clutch to operate the point rods and locking
bolt. Also visible is the detection bar, parallel to the running rail, which
would inhibit operation when a train was on the point switches.
Robert Ferris
back
|
|
|