Canning of food began as early as 1812 The can opener was not invented until 1855 In between, cans were opened with hammer & chisel (!)pic.twitter.com/kteOTA3g6o
No. There was a strange blade on an iron handle with a notch. You stabbed the tin and then levered the blade along tearing the tin along the edge of the top. They were in use when I was small in the early 60s. Nothing strange. It worked quite well but left jagged sharp metal.
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They had this in the early 1800s?
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It is a very simple bit of kit- little more than a hacking device, with no moving parts.https://arstechnica.com/gadgets/2017/11/dont-lose-a-finger-the-200-year-evolution-of-the-can-opener/ …
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