In 1871, Mason partnered with Boyd in the Consolidated Fruit Jar Company which licensed Mason jar patents to numerous glass makers. Boyd had patented a white "milk-glass" insert for the zinc screw lids to theoretically lessen the chances that food would be tainted by contact with the metal lid. Mason sold the patents for the Mason jar, to the Sheet Metal Screw Company of Lewis R. The jar lid has a rubber or rubber-like sealing surface and is held in place by a separate metal band. Jars are closed with two-piece metal lids that seal on the rim. His improved design in 1915 used the modern design. In 1903 Alexander Kerr introduced lids with a permanent rubber seal. Between 18, many other patents were issued for Mason jar improvements and closures. The cap screwed down onto a rubber ring on the shoulder of the jar, not the lip. It usually had a milk-glass liner, but some of the earliest lids may have had transparent glass liners. The initial form of closure for the glass canning jar was a zinc screw-on cap, the precursor to today's screw-on lids. History Before Mason Įarly closure style, zinc lid over glass liner On August 15, 2017, the Registrar at National Day Calendar proclaimed National Mason Jar Day to be observed annually as a National Holiday on November 30th, beginning in 2017. Its utility has been praised for use as a variety of household functional and decorative purposes such as an oil lantern, soap dispenser, speaker or vase. In a search for authenticity, commodification of Mason jars occurred leading to irony, as drinking out of canning gear highlighted overconsumption and lack of scarcity, the opposite of the designed intention of the jars. Used as a novelty by major corporations like 7-Eleven to advertise new drinks, for greenwashing being branded as zero waste consumer lifestyle, or as a trendy presentation for dessert. In the early to mid 2010s a revival of the Mason Jar occurred from a mix of the rise of thrifting and adoption by hipsters. Contemporary industrial preservation transitioned to the use of plastics like bakelite and nylon and billions of containers were produced instead. As migration to cities occurred, along with the rise of refrigerators, the more efficient transport of goods made fruit and vegetables available year round, reducing the need for food preservation. government rationed food, encouraging the public to grow their own. The peak use of Mason jars came during World War II, when the U.S. The jams, pickles, and sauces would be given and exchanged as gifts during the holidays as a canned preserved good was of much value. This was a reflection of the labour that went into making the jams. The jars became an essential part of farming culture, while being used at fairs to display jams and pickles for judging and awards. In early 20th century America, Mason jars became useful to those who lived in areas with short growing seasons. The style of jar is occasionally referred to by common brand names such as Ball jar (in the eastern US) or Kerr jar (in the western US) even if the individual jar isn't that brand. Over the years, the brand name Mason became the genericized trademark for that style of glass home canning jar, and the word "Mason" can be seen on many Ball and Kerr brand jars. Mason lost his patent for the jars and numerous other companies started manufacturing similar jars. The band, when screwed down, presses a separate stamped steel disc-shaped lid against the jar's rim. The jar's mouth has a screw thread on its outer perimeter to accept a metal ring or "band". It was named after American tinsmith John Landis Mason, who patented it in 1858. A collection of Mason jars filled with preserved foodsĪ Mason jar, also known as a canning jar or fruit jar, is a glass jar used in home canning to preserve food.
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