On Sat, 13 Jul 2019 17:01:15 +0200, Tosspot
wrote:
A discussion down there --v or up there --^ reminded me CO2 cartridges
come in a least two connectors, threaded and not. I've been caught by this.
Why the difference? Who cam first?
Years and years ago there was a device consisting of a glass bottle
with an attached CO2 cartridge, called a "siphon" was used to make
carbonated water for mixing drinks.
http://www.easywhip.com/soda-siphons.html
I believe that the original CO2 cartridges were threadless.
--
cheers,
John B.