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The Crown Cork was invented in 1891 by William Painter, an American of British descent who lived in Baltimore , Maryland . He got the patent for the Crown Cap on February 2nd 1892 (patent no. 468,258). Painter was a great inventor of many things and he patented 85 ideas, not all related to bottles. The Crown Cap was unique and tremendous invention. It was simple, single-use, economical to produce and absolutely leakproof. The Crown Cork had a corrugated-flange edge, and it was lined with a thin cork disc and a special paper backing to seal the bottle and also to prevent contact between the metal cap and the drink. Painter had to work hard to convince the bottle manufacturers to accept the Crown Cork design, because the bottles need a specific neck tip with a gripping area for the Crown. Finally he succeeded and the glass bottle manufacturers adopted the idea. The original idea of the Crown Cap is still the same, only the teeth on the skirt of the Crown have been reduced from 24 to 21 and the linings are now usually made of PVC or PVC-free material instead of cork. The first Crown Corks were made of plain steel without any printings with one or both sides lacquered. The earlier Crowns used natural cork discs as liners and later, by the mid of the 1910's, they were replaced with composition cork. Many Crown Cork manufacturers used cork linings until 1960's, when plastic - nowadays usually PVC-free material - replaced it. Around 1930's cold rolling process of tinplate replaced the hot rolling processes to improve the physical and chemical properties of tinplate. In June 1961 Toyo Kohan Co. of Japan started the production of tin free steel (TFS or HI-TOP as Toyo Kohan calls it). It started a new period in Crown Cap manufacturing. Nowadays our Crowns are usually made of tinplate, electrolytically lined with tin, or of chromium plated sheet metal (according to DIN 6099). Although hundreds of other bottle caps have been invented in the last 110 years and many drinks are now available in plastic PET bottles, the Crown Cap still holds its position as the market leader. In the 1960's the short-skirt Crown which had a lower height was developed. It was used for drinks in the USA but didn't fit in other countries due to the variation of the height. This led to the development of the standard DIN 6099 for the 'Intermediate Crown Cap'. The same standard is used for both 'normal pry-off Crown Cap' and 'twist-off Crown Cap'. Height: 6,00 ± 0,15; Inside diameter: 26,75 ± 0,15; Outside diameter: 32,10 ± 0,20 (the measures are in millimeters) The Crown Cork was the first highly successful disposable product (it cannot be resealed). This inspired King C. Gillette to invent the disposable Razor when he was a salesman for the Crown Cork Company. Crown corks, also known as Crown Caps or Bottle Caps, are collected by people around the world who admire the variety of designs and relative ease of storage. The Crowncap Collectors Society International is an organization that promotes the hobby of bottle cap collecting. There are several crown cork clubs in all continents, and also thousands of crown cork collectors. EXTERNAL LINKS ''Company'' Patents
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