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It was almost certainly related to the "télégraphe pneumatique" messaging system, that allowed to send mail and small objects extremely rapidly across Paris in
by wazoox 8y ago
It was almost certainly related to the "télégraphe pneumatique" messaging system, that allowed to send mail and small objects extremely rapidly across Paris in air-filled tubes:
http://www.cix.co.uk/~mhayhurst/jdhayhurst/pneumatic/book1.html http://www.cix.co.uk/~mhayhurst/jdhayhurst/pneumatic/book1.h...
They had the compressed air generation available already! And this service was available until 1984 (the last line was closed in 2004!).
More details on the French Wikipedia:
https://fr.wikipedia.org/wiki/Tube_pneumatique https://fr.wikipedia.org/wiki/Tube_pneumatique
- Aardwolf 8y ago> And this service was available until 1984 (the last line was closed in 2004!). Odd that it fell out of favor, sending things around only became more popular with all the internet shopping!
- julienchastang 8y agoWhat's old can be new again! :-) My own great-grandmother was user of this pneumatic mail network. Perhaps it was displaced by the Minitel -- another remarkable invention that fell by the wayside.
- Xylakant 8y agoHamburg built a system with a pipe diameter of 45cm in the 1960ies but the system was scrapped soon after. It would be a godsend nowadays. See Großrohrpost on this page https://de.m.wikipedia.org/wiki/Rohrpost_in_Hamburg https://de.m.wikipedia.org/wiki/Rohrpost_in_Hamburg (sadly no English translation exists)