Iconic 1950s Tin Thermos Vacuum Flask with Cork Stopper Thermos is The Very First Vacuum Flask Brand

ICONIC 1950S LARGE CREAM THERMOS BRANDED VACUUM FLASK WITH RED AND BLACK STRIPES. STILL HAS THE ORIGINAL CORK STOPPER. Tin vacuum Thermos flasks became popular post war. Cork-stoppered Thermos vacuum flasks were common from the early 20th century through the 1970s. 

The story of the drink cooler as we currently know it started way back in 1892 when the Scottish scientist, Sir James Dewar, invented the first vacuum flask. Vacuum flasks are made by placing one flask inside another flask with both joined at the neck and the air in the gap between the two mostly removed. This near-vacuum significantly reduces the heat transfer between whats inside the flask and the environment outside such as your warm hand or the air on a hot day, keeping your drink cold.
BUT DESPITE COMING UP WITH THE INVENTION, WHICH AT THE TIME WAS KNOWN AS THE DEWAR FLASK, JAMES DEWAR NEVER PATENTED IT, LEAVING IT TO TWO GERMAN GLASSBLOWERS IN 1908 TO PATENT THE VACUUM THERMOS BRANDED FLASK FOR USE TO KEEP COLD DRINKS COLD AND WARM DRINKS WARM.

They became ever more popular in civilian life between the wars and by 1939 Thermos was the market leader in Britain. Once war was declared they moved their capacity over from civilian to military manufacture. During World War II the British made extensive use of similar Thermos flasks to keep liquids warm for personnel who would go long periods without access to facilities to warm tea or soup. This included aircrew, AFV crew and glider crew who could all spend long periods locked down in their vehicles without a hot drink; a Thermos of hot tea was a godsend to these men and a way of fighting off cold and keeping alert. The military Thermoss had a wire handle to allow it to be carried.

During the 1950s the vacuum or branded Thermos not only became popular for picnics, but was the staple of the motor car tourer. Ones from the twenties until the fifties were usually Bakerlite, although tin became popular post war. Inter-war ones would often be jugs with cork stoppers. Cork-stoppered Thermos vacuum flasks were common from the early 20th century through the 1970s  By the seventies most outer casings of vacuum flasks were plastic.

MARKINGS:
THERMOS 1925 LIMITED THERMOS REGISTERED TRADEMARK

SIZE: 
25CM HIGH UP TO LID 7.5CM DIAMETER

CONDITION: IN USED VINTAGE CONDITION. STILL HAVE ORIGINAL CORK IN TACT.

THERMOS(1892-present):
In 1892, Scottish scientist Sir James Dewar invented the vacuum flask. Through his work in cryogenics, he identified a need to keep a chemical placed in a flask at a stable temperature. To do this, Dewar placed a glass bottle in another larger glass bottle, and evacuated the air between the two bottle walls. In doing so, Dewar created a partial vacuum to keep the temperature of the contents stable. Hiring a professional glass blower to make a sturdier flask led to the commercial manufacture of the Dewar Flask in 1898.
In 1903 Reinhold Burger (Dewars glass blower) and his German business partner Albert Aschenbrenner were manufacturers of scientific glass devices. While producing flasks for Dewar, they crafted a domestic vacuum flask with a protective metal casing and secured a patent for it. In 1904 Burger and Aschenbrenner hosted a competition to name the vacuum bottle. A Munich resident submitted the word Thermos derived from the Greek word Thérmē meaning heat and Thermos GmbH was formed.
In 1907, Thermos GmbH sold the Thermos trademark rights to three independent companies: The American Thermos Bottle Company, US; Thermos Limited, UK; and Canadian Thermos Bottle Co. Ltd. Canada. The three Thermos companies operated independently of each other, yet developed the Thermos vacuum flask into a widely sought after product that was taken on many famous expeditions, including: Lt E.H. Schackelton's trip to the South Pole; Lt Robert E. Peary's trip to the Arctic; Colonel Roosevelt's expedition to Mombassa and into the heart of the African Congo with Richard Harding Davis. It even became airborne when the Wright Brothers took it up in their airplane and Count Zepplin carried it up in his air balloon.
In the 1920s the popularity of Thermos products grew tremendously so much so that The American Thermos Bottle Company had to move to a new site in Norwich, CT to increase output. The No. 24 one pint-size (600ml) Blue Bottle was introduced for a mere 98 cents and became one of the most iconic and recognisable vacuum flasks in the companys history.
By the 1950s Thermos branded products are almost universally known. In 1960 Thermos merged with the King-Seeley Corporation, thus entering the tent, camp stove, and lantern field. In 1966 Thermos introduced the world to their first stainless steel vacuum bottle. In 2004 Thermos celebrated 100 years of designing and developing vacuum insulated products.

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