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wheels wrote:

Laripu wrote:Sure, even though you addressed Martin, I can supply this info. Ball is an American company that makes (among other things) good quality, inexpensive jars for canning. In particular, many people (e.g. my wife) use them for jams, jellies and other preserves.

Many thanks, they're what we know as Kilner jars - also after the name of the manufacturer.

Phil

I got curious, and looked it up. A man named Mason patented the idea in 1858. When the patent ran out, Ball started to produce them in the US, and later Kerr. In the UK, Kilner, and in Canada a company called Bernardin.

Apparently before that, they either used wax seals, or wire-bale jars.