Bottle opener capacity. A specific style of bottle opener is known as a churchkey. Invented at the same time as the crown cork, it is the original bottle opener. But as well as being portable it also comes as a fixed device to be attached to vertical surfaces, often with a tray to catch the bottle tops. It does not open wine bottles. It is class 2 fulcrum type. A simple opener is a piece of metal with a rectangular or rounded opening in one end and a solid handle large enough to be gripped between the thumb and forefingers on the
Can opener religious organizations which had supported Prohibition. Another key-type opener with completely different design was patented by J. Osterhoudt in 1866. Instead of piercing the can, it was used to tear off and roll up a pre-scored strip on the side of the can, just below the lid. It was also called "key", because of resemblance to a door key. Such openers are spot-welded or soldered to many small, thin-walled cans nowadays and are separated prior to use by prying the key up and bending it back and forth a few times until it breaks loose. Several can openers with a