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Sylphon
A sylphon is an old name for a cylindrically symmetrical metal bellows. When made of metal, the sylphon shape was formerly created by metal spinning onto a metal mandrel (model), and now by hydrostatic forming within a mold. Because the mold contains the convolutions of the bellows, the mold must be constructed in parts so that it can be disassembled when the forming process is complete. Experimental physicist John Strong makes occasional use of the term sylphon in his book ''Procedures in Experimental Physics''. A sylphon, or bellows, is used, among other purposes, to transfer motion through the wall of a vacuum chamber. It can be used as a squeeze piston for simple pumps. It can also be used as a flexible coupling to transfer rotary motion between shafts. The sylphon was invented in the early 1900s by meteorologist Weston Fulton (1871–1946), who named it for the sylph A sylph (also called sylphid) is an air spirit stemming from the 16th-century works of Paracels ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weston Fulton
Weston Miller Fulton (August 3, 1871 – May 16, 1946) was an American meteorologist, inventor, and entrepreneur, best known for his invention, the " sylphon," a seamless metal bellows used in thermostats, switches, and other temperature-control devices. Fulton also invented an automatic river gauge while working for the U.S. Weather Bureau, and played a primary role in the development of the depth charge during World War I.William Du Puy, Uncle Sam: Fighter' (New York: Frederick A. Stokes Company, 1919), p. 286. His company, now called Fulton Bellows after numerous ownership changes, still operates in Knoxville, as part of the United Flexible Group, which acquired it in 2016. Biography Early life Fulton was born in Hale County, Alabama, the son of William and Mary Hudson Fulton. His family owned a large cotton plantation, and Weston and his brothers did much of the cotton picking. He briefly attended Howard College (modern Samford) in Birmingham before enrolling at the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metal Bellows
Metal bellows are elastic vessels that can be compressed when pressure is applied to the outside of the vessel, or extended under vacuum. When the pressure or vacuum is released, the bellows will return to its original shape, provided the material has not been stressed past its yield strength. They are used both for their ability to deform under pressure and to provide a hermetic seal that allows movement. Precision bellows technology of the 20th and 21st century is centered on metal bellows with less demanding applications using ones made of rubber and plastic. These products bear little resemblance to the original leather bellows used traditionally in fireplaces and forges. Types There are three main types of metal bellows: formed, welded and electroformed. Formed bellows are produced by reworking tubes, normally produced by deep drawing, with a variety of processes, including cold forming (rolling), and hydroforming. They are also called convoluted bellows or sylphons. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metal Spinning
Metal spinning, also known as spin forming or spinning or metal turning most commonly, is a metalworking process by which a disc or tube of metal is rotated at high speed and formed into an axially symmetric part. Spinning can be performed by hand or by a CNC lathe. The metal spinning trade is one that dates back to antiquity and was a skill used in the Ancient Egyptian era. This is when metal spinning was limited to soft metals spun by human power on primitive lathes. The technique gave significant advances to hydro and steam power in Europe and North America in the 19th century and by the early 20th century the electric motor provided the necessary power and high-speed turning capability. With this advancement, metal spinning craftsmen were now able to spin higher quality pieces made out of brass, copper, aluminum and even stainless and cold-rolled steel. Metal spinning does not involve removal of material, as in conventional wood or metal turning, but forming (moulding) of sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Donovan Strong
John Donovan Strong (1905-1992) was an American physicist and astronomer. Strong, one of the world’s foremost optical scientists, was known for being the first to detect water vapor in the atmosphere of Venus and for developing a number of innovations in optical devices, ranging from improved telescope mirrors to anti-reflective coatings for optical elements and diffraction gratings. Career Born in Lawrence, Kansas in 1905, Strong received degrees from the University of Kansas (BA 1926) and the University of Michigan (M.S., 1928, Ph.D., 1930). After twelve years at Caltech and wartime research at Harvard on infrared systems, Strong became professor and director of the Astrophysics and Physical Meteorology Laboratories at Johns Hopkins University in 1946, where, among many other projects, he conducted research on balloon astronomy for the Office of Naval Research (ONR). Research Strong published hundreds of papers throughout his career and was author of ''Procedures in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sylph
A sylph (also called sylphid) is an air spirit stemming from the 16th-century works of Paracelsus, who describes sylphs as (invisible) beings of the air, his elementals of air. A significant number of subsequent literary and occult works have been inspired by Paracelsus's concept: Robert Alfred Vaughan noted that "the wild but poetical fantasies" of Paracelsus had probably exercised a larger influence over his age and the subsequent one than is generally supposed, particularly on the Rosicrucians, but that through the 18th century they had become reduced to "machinery for the playwright" and "opera figurantes with wings of gauze and spangles". Etymology "Sylph" is possibly a blend of from Latin '' sylvestris'' and '' nympha'', ''sylvestris'' being a common synonym for sylph in Paracelsus. Anthon and Trollope note a similar usage in the ''Aeneid'', where ''silvestris'' is taken as an elliptical form of ''nympha silvestris'' ("forest nymph"). Jacob Grimm uses this phrase as a gloss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
