46233 'Duchess Of Sutherland' departs Stockport with her steam coal-pusher in action 5th August 2017
46233 'Duchess Of Sutherland' arriving late into Stockport on 1Z56 Carlisle to Crewe with her Steam Coal Pusher in action. An unusual feature of all Coronation Class tenders was that they were fitted with a steam-operated coal pusher to bring the coal down to the firing plate. When this was in operation a plume of steam could be seen rising from the rear face of the coal bunker backwall. This equipment greatly helped the locomotive's fireman to meet the high demands for power during the non-stop run of 399 miles (642 km) between London Euston and Glasgow Central.
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