Can Opener

There are various kinds of can openers available, ranging from the very crude bladed devices that are just meant to be punctured into the rim of the can to the automated ones that will sever the can top in one neat cut and not even leave any sharp edges behind. The simplest can openers can be fitted in key chains and key rings and the most complex ones are standalone devices that will occupy a significant amount of space in the room. However, their basic purpose remains the same – to open lids of cans.

Can openers have seen a significant amount of evolutionary advancement. They were first introduced into the world in 1858 by Ezra Warner. These devices used a simple principle – puncture the rim of the can and keep repeating the process till the entire circumference of the lid was punctured. These devices became popular because there were no other can openers available at that time; however, there were problems such as the openers left dangerous jagged edges behind, took a long time opening and required putting in some effort to open the can completely. The next design that was introduced in 1870 was a considerable development over the previous design – it used two wheels to move the opener forward as it continuously opened the can. This required less effort and the process was a cleaner sweep.

Today, this design is still used in the form of the butterfly can opener. These openers have a butterfly-like handle which is meant to be rotated. This makes the wheels move, which makes the can opener move ahead. As it moves, it cuts into the can lid and opens it. To grip the butterfly can opener properly, two long handles are provided which need to be clenched tightly as the opener does its task. These handles also provide the necessary fulcrum for opening the can.

A variety of can openers are used today. Multipurpose knives have built in can openers which are quite similar to the blade number 51 which was commonly used by American soldiers during the World War 2. These blades are meant to be punctured into the can continuously so that the lid is opened completely.

At the same time, there are automatic can openers that do not require a human to touch the can as it is being opened. The can needs to be positioned correctly and the machine will grip the can. The can is then taken to the opener area where a single neat sweep opens the lid. Magnets hold the lid as it is severed so that it does not fall into the can. These machines have sophisticated blades which do not leave sharp edges behind. The automated can openers are seen especially in commercial establishments where a lot of cans need to be opened each day. These are high-end devices that also come with a high price tag.

Even in handheld can openers, such as the butterfly can opener is, there are several advancements taking place. Today, it is common to find can openers that look no more sophisticated than penknives and which can be operated just by pressing firmly on their handle. They do not require any physical effort as in rotating a handle or gripping the levers. These can openers are pricier and manufactured by only a few companies currently, but they are becoming popular because of the added efficiency that they provide.

Can openers are priced according to the technology that drives them. They could be available for a couple of dollars to a couple of hundred dollars too. Some manufacturers bundle them with other devices such as jar openers and bottle openers to give the buyer more value for money.

This Can Opener Review is Written/Updated on Jun 25th, 2009 and filed under Kitchen Appliances. Both comments and pings are currently closed.

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