GWR Steam Locomotive "Jumper Top" Blast Pipe
myminifactory
A model of a Jumper Blast Pipe Top modelled from the book "Handbook for Steam Locomotive Enginemen" Used to reduce the viciousness of the exhaust to prevent ripping up the fire. When a locomotive is working hard It could be modified by using a "jimmy" one is preserved in the national collection (I'll add a file for this when I can find out what it looks like): https://collection.sciencemuseumgroup.org.uk/objects/co222186/blast-pipe-jimmy-from-great-western-railway-blast-pipe-jimmy
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