Chicken or Egg (Canned Food or Ships Propeller)

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Which was there first?

Poll ended at Fri Jul 06, 2018 11:59 pmPlease note that results are sorted by decreasing number of votes received.

Canned Food
4
57%
Ships Propeller
3
43%
 
Total votes: 7

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poultry_admin
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Chicken or Egg (Canned Food or Ships Propeller)

Post by poultry_admin » Mon Jul 02, 2018 9:39 am

Which came first?
Canned Food or a Ships Propeller?

(No Google!)
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Re: Chicken or Egg (Canned Food or Ships Propeller)

Post by poultry_admin » Sat Jul 07, 2018 9:22 pm

Ships propeller: 1775
Canned food: 1810
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Re: Chicken or Egg (Canned Food or Ships Propeller)

Post by poultry_admin » Sun Jul 08, 2018 5:07 pm

So, I got some push back that the propeller was invented 1827 and therefore AFTER canned food. Mainly because of this:
propeller.JPG
But I am confirming my number 1775 none the less. Russel did the first commercial application of it. The blades look like the ones we are used to seeing now. Brass is still a common material to be used for them. And I am sure (although I have not confirmed it) he also got a patent on it. All is great, but the same article in wiki uses another example as an earlier propeller. In 1775 David Bushnell and Isaac Doolittle built the "American Turtle", the first submarine used in combat. It was meant to apply explosives to the hull of British Ships in harbor. While a failure from a military standpoint (0 ships sunk), the replicas and sketches depicting the "Turtle" show either an Archimedes type screw
bushnell-turtle1.jpg
or a propeller
turtle2.jpg
turtle2.jpg (9.02 KiB) Viewed 268 times
Either way, the thing is spinning under water pushing the boat forward by doing so. Thus close enough to be a propeller. Not the best design and horribly inefficient, but a propeller none the less.

If you want to read up about it yourself:
https://en.wikipedia.org/wiki/Propeller
https://www.scientificamerican.com/arti ... ropellers/
http://www.irvineburnsclub.org/irvine/propeller.htm

Images: wiki screen shot, https://www.militaryfactory.com/ships/i ... turtle.jpg and https://encrypted-tbn0.gstatic.com/imag ... KqK-0hsYPA
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