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Dixie Cup dispensers. How does this machine work?

by EngrDelaCruz
Tags: dispensers, dixie, machine, work
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EngrDelaCruz
#1
Jan29-13, 05:44 PM
P: 3
Ok, it's definitely not magical (just wrote that to get your attention), but checkout this machine:

http://www.youtube.com/watch?v=lxwswYfjsRY

How does this machine separate one cup from the rest of the stack?

Can you think of a simple mechanism to do the same thing?

I'm very curious and I have been thinking about it :/

Thanks for the help!
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Bobbywhy
#2
Jan29-13, 06:17 PM
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P: 1,909
EngrDelaCruz, Welcome to Physics Forums!

Dixie Cup dispensers allow one cup to be removed at a time. I recommend you check the patents for this mechanism. Here's one to get you started:
http://books.google.com/books?id=fPU...hanism&f=false

Cheers,
Bobbywhy
Mordred
#3
Jan29-13, 06:27 PM
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P: 1,857
Judging from the airlines I'd say suction.

EngrDelaCruz
#4
Jan29-13, 06:48 PM
P: 3
Dixie Cup dispensers. How does this machine work?

Quote Quote by Bobbywhy View Post
EngrDelaCruz, Welcome to Physics Forums!

Dixie Cup dispensers allow one cup to be removed at a time. I recommend you check the patents for this mechanism. Here's one to get you started:
http://books.google.com/books?id=fPU...hanism&f=false

Cheers,
Bobbywhy
If the concept in the patent was used in a university project wherein we have to build a cup vending machine, will that be legal?
Bobbywhy
#5
Jan29-13, 07:00 PM
PF Gold
P: 1,909
I am not qualified to advise you on Patent Law. Normally a patent-holder's monopoly expires after 20 years. You may get some background information here: http://en.wikipedia.org/wiki/Term_of..._United_States

But your University advisor should check on the legal ramifications.

Cheers,
Bobbywhy
russ_watters
#6
Jan29-13, 07:44 PM
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P: 22,297
Welcome to PF!
Quote Quote by EngrDelaCruz View Post
How does this machine separate one cup from the rest of the stack?

Can you think of a simple mechanism to do the same thing?
You can see in the video a grooved cylinder on each side of the cup grabs the lip and pulls the cup down and away from the cup above it.
AlephZero
#7
Jan29-13, 10:19 PM
Engineering
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P: 7,166
If you don't want to just copy somebody else's idea from a patent, look at the way the "escapement" works on a mechanical clock or watch to let the gears turn one tooth at a time.

Then figure out how to do something similar with a stack of cups, and gravity.


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