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A zipper, zip, or fly, formerly known as a clasp locker, is a commonly used device for binding together two edges of fabric or other flexible material. Used in clothing (e.g. jackets and jeans ), luggage and other bags , camping gear (e.g. tents and sleeping bags ), and many other items, zippers come in a wide range of sizes, shapes, and colors.
It is what clasps the zipper teeth or separates them depending on the direction of movement. Attached to it is the pull tab, the extension that is held when moving the zipper up or down. Some sliders come with a zip-lock feature in that, when the pull tab is lowered, it locks the slider in place and when raised, it unlocks it. Tape
A keycard lock is a lock operated by a keycard, a flat, rectangular plastic card. The card typically, but not always, has identical dimensions to that of a credit card , that is ID-1 format . The card stores a physical or digital pattern that the door mechanism accepts before disengaging the lock.
6. Spare Keys. Spare keys in your wallet might seem like a good idea — until you lose them. Now, some random guy could be two steps away from showing himself in. Better call: leave a spare with ...
A key can be added to a keyring by forcing an end of the loop open and sliding the key along the spiral. A keyring or "split ring" is a circle cotter that holds keys and other small items sometimes connected to keychains. Other types of keyrings are made of leather, wood and rubber. These are the central component to a keychain.
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The new fastener worked well, but there were few sales until the United States entered World War I in 1917, and money belts, life vests and aviation suits were made with the units. In 1919 Locktite tobacco pouches began being made with zippers, and hundreds of thousands of the pouches were made, utilizing 70 percent of Hookless Fastener Company ...
Judson's most noteworthy invention, a chain-lock fastener, was the precursor to the modern zipper which he developed and invented in 1891. [5] Judson is generally recognized as the inventor of the zipper. [6] He also invented a "clasp-locker" automation production machine that made his fastener device inexpensively. [7]