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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]
A metal zipper is a zipper with its binding edges consisting of individual pieces of metal that are molded into shape and set at regular intervals on the zipper tape. Metal zippers are mainly made of brass , nickel and aluminium , and given their durability, they are mostly used in jeans, work-wear, heavy luggage and heavy-duty garments that ...
A zipper (N. America), zip, zip fastener (UK), 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 ...
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 ...
One by one, colonies began to issue their own paper money to serve as a convenient medium of exchange. On December 10, 1690, [4] the Province of Massachusetts Bay created "the first authorized paper money issued by any government in the Western World". [5] This paper money was issued to pay for a military expedition during King William's War ...
Model of Louis-Nicholas Robert's continuous paper making machine at Frogmore Paper Mill. Following Robert's successful model, built in 1798, Saint-Léger Didot insisted that Robert apply for a patent. Prior to 1798, paper was made one sheet at a time, by dipping a rectangular frame or mould with a screen bottom into a vat of pulp.
The first issue of government-authorized paper currency in America was printed by the Province of Massachusetts Bay in 1690. [1] This first issue, dated 10 December 1690, was printed from an engraved copper plate with four subjects to a sheet. [ 2 ]
The ability to create paper money made nation-states responsible for the management of inflation, through control of the money supply. It also made a direct relation between the metal of the coin and its denomination superfluous. From 1816, coins generally became token money, though some large silver and gold coins remained standard coins until ...