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One of the company's first successful products was a damper regulator for boilers that used a sylphon to automatically adjust the damper position as the temperature changed. [5] The earliest automobile thermostats used sylphons for actuation. [5] By 1940, over 50 million sylphons were in daily use the United States alone. [6]
The earliest pipes were made of clay, and are found at the Temple of Bel at Nippur in Babylonia. [127] [b] 4000 BC: Oldest evidence of locks, the earliest example discovered in the ruins of Nineveh, the capital of ancient Assyria. [130] 4000 BC – 3400 BC: Oldest evidence of wheels, found in the countries of Ukraine, Poland, and Germany. [131 ...
Masking tape is a pressure-sensitive tape made with an easy-to-tear thin paper, and fly back and a removable pressure-sensitive adhesive. In 1925, Richard G. Drew , an employee of the Minnesota Mining and Manufacturing Company (3M), invented the first masking tape, a two-inch-wide tan paper strip backed with a light, pressure-sensitive adhesive ...
During the 1920s, significant advances were made in welding technology, including the introduction of automatic welding in 1920, in which electrode wire was fed continuously. Shielding gas became a subject receiving much attention, as scientists attempted to protect welds from the effects of oxygen and nitrogen in the atmosphere.
1912 – Stainless steel invented by Harry Brearley; 1916 – Method for growing single crystals of metals invented by Jan Czochralski; 1919 – The merchant ship Fullagar has the first all welded hull. 1924 – Pyrex invented by scientists at Corning Incorporated, a glass with a very low coefficient of thermal expansion
A vast array of products are made with vulcanized rubber including ice hockey pucks, tires, shoe soles, hoses and many more. When "rubber fever" struck Boston in the 1830s, there was a large consumer demand for products made of rubber- aprons, life preservers, hats, carriage tops, and, by 1836, waterproof shoes.
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Forge welding (FOW), also called fire welding, is a solid-state welding process [1] that joins two pieces of metal by heating them to a high temperature and then hammering them together. [2] It may also consist of heating and forcing the metals together with presses or other means, creating enough pressure to cause plastic deformation at the ...