Can Opener

How would you open a can, without a can opener?

Can openers are tools, typically used to open cans, usually in a culinary environments like the food industry and domestic situations.
‘Can openers’ are also known as ‘tin openers’, and are often made of metal such as stainless steel, or plastic, although the cutter is generally metal.
While preserved food in cans dates back to the mid to late 1700s and the process became successful, patented, and popular in the early 1800s, can openers were not invented until approximately 50 years later, and were most likely not invented earlier due to the heavy thickness of the iron that the cans were made from.
Can openers replaced the common hammer and chisel method of opening a can, and were first invented around the 1850s with a leverage mechanism shaped like a claw.
Modern can openers typically involve a sharp metal rotating disc that cuts through cans when moved along the edge.

William Lyman, an American inventor from Connecticut’s Meriden, in the United States, is said to have invented the first can opener with a rotating wheel, in 1870, and it is this basic principal which most modern designs use.
Early can openers were originally quite dangerous to use, and this problem was fixed by an improved cutting technique and design.
Electrically operated can openers were not popular when first invented in 1931, but they were redesigned in 1956 by at least two different companies of which only one became popular.
Can openers often use a scissor like mechanism with two handles that pivot and close two discs onto the can, one of which rolls around the can, and the other cuts, both of which move due to the user turning a protruding handle.
Can openers have become less essential due to many cans now having their own ring pull lid or pull open top, that easily opens the can without a special tool.

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