Can openers may seem like simple tools, but they have a fascinating history. Did you know that they were invented long after canned food became popular? One of the early versions of can openers was the can opener key, a small and mysterious tool that required patience to use. If you enjoy browsing thrift shops and antique stores, you might come across this relic from the past.

The Origin of the Can Opener

The story begins with the invention of cans. In 1795, Napoleon Bonaparte offered a reward to anyone who could preserve food for his army during their travels. Scientist Nicolas Appert won the reward by using glass jars and lids, which led to inventor Peter Durand creating the first tin and iron can with a patent from King George III.

In the early days, cans were made of thick iron and had to be opened using a hammer, chisel, or a similar tool. It wasn’t until cans became thinner that the idea of a can opener became possible.

The Can Opener Key

American inventor Ezra J. Warner changed the game when he patented the first official can opener on January 5, 1858. As cans became thinner, the classic hammer and chisel method was no longer effective. Warner’s can opener cut into the lid and sawed around the rim.

In 1866, J. Osterhoudt patented the opener key. This key-shaped blade sawed around the edge of the cans. Various canned products came with their own keys designed for opening specific items such as fish, meat, beans, and coffee. While this particular can opener is the least recognized and least resembles the ones we are familiar with, it holds a unique piece of history.

The Evolution of Can Openers

The first all-purpose can opener appeared in 1870 when William Lyman patented the first rotary cutter. It had wheels operated by a crank that rolled around the edge of the can, resembling a bent bayonet. However, it wasn’t until the 1920s that Charles Arthur Bunker improved on the rotary design, creating the opener that we use today. The addition of a second wheel to grasp the can’s edge became a key feature of modern openers. In the 1980s, the “smooth edge” design was introduced to avoid jagged edges and protect the contents of the can.

How to Open a Can Without a Can Opener
Now that you know the fascinating history of can openers, it’s handy to know alternative methods for opening cans in case of emergencies or if you find yourself without a can opener. While these methods may not be as efficient, they can be a lifesaver in certain situations. Just remember to be cautious of sharp edges.

Using a Chef’s Knife:

1. Hold the flat side of the knife with your palm against the handle and the sharp edge facing away from you.
2. Use the corner edge of the blade closest to the handle to puncture the top of the can. Push the blade in as deeply as possible to create a larger hole.
3. Rotate the can, puncturing around the rim until you can open the lid and access the contents inside.

Using a Metal Spoon:

1. Hold the spoon firmly with the scoop facing down and towards you.
2. Take the can in your other hand and position the spoon bowl near the edge of the lid.
3. Rub the spoon against the lid while applying downward pressure until a small hole appears.

Now you have a glimpse into the history of can openers and alternative methods to open cans. Whether you choose to embrace nostalgia with a can opener key or rely on modern tools, opening your favorite tinned foods will always be a satisfying experience.