Many people tend to assume that cans and can openers were invented around the same time, as it is now considered essential to have a can opener in order to open a can. This is not, in fact, the case: cans were invented in the early 19th century, in order to store food for the navy, while can openers werent invented until a man named Ezra Warner came up with the idea half a decade later. In the meantime, people had to come up with creative ways to open the cans, often using sharp knives, or a hammer and chisel.
The can opener we all know and love today dates back to 1925, although it was only a minor modification to the original 1870 design, adding a jagged edge to the cutting wheel. It is a testament to their utility that the only change since has been the introduction of electric can openers, but electric can openers are still by no means ubiquitous, and it is rare to find a kitchen that doesnt possess a can opener in the classic design
Even though pull-to-open cans were invented 50 years ago, people still open millions of cans every day using can openers, as cans are much cheaper to manufacture when they dont include a ringpull. There is also a certain nostalgia...
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