2021.08.02 "Extra" Pic

kcm.MN

Well-known Member
Location
NW Minnesota
1769 Cugnot Steam Tractor
Puzzle: https://jigex.com/ttqSM

mvphoto79558.jpg
 
Originally designed to haul artillery for the French Army and it is considered the first practical (??) self-propelled vehicle. Apparently, they still had a bit
to go on developing a a connecting rod, crosshead slide and reciprocating crankshaft instead of this machine's ratchet drive!
steamy French video
 
There was a replica of this built that they actually operate at special events. There are videos on YouTube of it operating. Definitely worth a watch
 
Someone had a solid patent on the crankshaft and piston rod idea, so they had to avoid that..
There was another design where the piston rod had a fixed gear on it that drove the main shaft gear.

https://www.youtube.com/watch?v=4bXjAyfDfm0
Watt
 

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