Tin cans were developed in 1810 for the British Royal Navy but the inventor forgot about inventing a way to open it. The instructions on it read: "Cut round the top near the outer edge with a chisel and hammer."So how did people open the cans? Soldiers used bayonets and rifles to fire and open them. Not until 1870 that a design by William Lymanwas patented. You can also read How Cans Are Made if you're curious.
Anyway, happy Can Opener Day (in advance) -- with out it life would be very different.
Send this Can Opener Day eCard !