Dixie Cup dispensers. How does this machine work?

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Discussion Overview

The discussion centers around the mechanics of Dixie Cup dispensers, specifically how these machines manage to separate one cup from a stack. Participants explore potential mechanisms and ideas for replicating this function, considering both existing patents and innovative designs.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • EngrDelaCruz expresses curiosity about the mechanism that allows one cup to be dispensed at a time and seeks ideas for a simple mechanism.
  • Bobbywhy suggests checking patents related to the dispensing mechanism and provides a link to a relevant patent.
  • Another participant speculates that suction might be involved in the operation of the dispenser.
  • EngrDelaCruz questions the legality of using a patented concept for a university project involving a cup vending machine.
  • Bobbywhy responds regarding patent law, indicating that a patent typically lasts for 20 years and advises consulting a university advisor for legal guidance.
  • A participant describes a possible mechanism involving a grooved cylinder that grabs the lip of the cup to pull it down and away from the stack.
  • Another suggestion is made to consider the escapement mechanism found in mechanical clocks as inspiration for designing a cup dispensing system using gravity.

Areas of Agreement / Disagreement

Participants present various ideas and hypotheses about the mechanisms involved, but no consensus is reached on a single explanation or design approach. Multiple competing views and suggestions remain throughout the discussion.

Contextual Notes

Some participants reference patents and legal considerations, but the discussion does not resolve the implications of using patented designs in new projects. The technical details of the proposed mechanisms remain speculative and unverified.

Who May Find This Useful

Individuals interested in mechanical design, patent law, or the engineering principles behind dispensing mechanisms may find this discussion relevant.

EngrDelaCruz
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Dixie Cup dispensers. How does this machine work?!?

Ok, it's definitely not magical (just wrote that to get your attention), but checkout this machine:



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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Judging from the airlines I'd say suction.
 


Bobbywhy said:
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=fP...page&q=dixie cup dispensing mechanism&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?
 


Welcome to PF!
EngrDelaCruz said:
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.
 


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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