Why are the caps of beer bottles 2 1 sawtooth?

First of all, here is the person who designed 2 1 sawtooth. He is William Pant from England. He has been studying how to make a lid that won't let carbon dioxide escape, but he hasn't made any progress. Later, after painstaking research, it was finally found that adding 2 1 sawtooth on the bottle cap can effectively prevent carbon dioxide from slipping out of the lid. Then why does it have to be 2 1? When we studied physics before, the teacher said that three points could be the most stable.

But it may be too simple to design the bottle cap into three serrations, which is not very good for a bottle full of liquid, so at this time he wondered if he could write an article in multiples of 3. As it turns out, in fact, only 2 1 is the best way to control the bottle cap. Later, the design of this bottle cap was also imitated. Later, many beer companies wanted to make a fuss about bottle caps and change the design method to achieve innovative results, but in the end they basically failed.

As early as the end of 19, William Pate invented the 24-tooth bottle cap and applied for a patent. There is also a paper pad inside to prevent the beverage from contacting with metal, which is mainly based on Pater's finding that the number of teeth is the most suitable for sealing the wine bottle. As an industry standard, 24-tooth bottle caps were used until 1930s.

With the process of industrialization, the original manual capping method has become industrial capping. The 24-tooth cap is first covered on the bottle one by one with a punch. After the automaton appears, put the bottle cap into the hose and install it automatically. However, in the process of use, it is found that the 24-tooth bottle cap is easy to block the hose of the automatic filling machine, and this will not happen if it is changed to 23 teeth. Finally, it was gradually standardized to 2 1 tooth today.