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The damper flapper could control a coal fire furnace by operating the furnace damper from a thermostat. In 1885, Butz decided to patent his heat controller and establish a company to make and sell it. It is believed that Mendenhall urged Butz to patent, manufacture, and sell the damper flapper.
The word poppet shares etymology with "puppet": it is from the Middle English popet ("youth" or "doll"), from Middle French poupette, which is a diminutive of poupée.The use of the word poppet to describe a valve comes from the same word applied to marionettes, which, like the poppet valve, move bodily in response to remote motion transmitted linearly.
The nozzle and flapper mechanism is a displacement type detector which converts mechanical movement into a pressure signal by covering the opening of a nozzle with a flat plate called the flapper. [1] This restricts fluid flow through the nozzle and generates a pressure signal.
Cockerill engine of 1900. In the late 1800s, internal combustion gas engines were developed to burn gasses produced from blast furnaces, eliminating the need for fuel for steam boilers and increasing efficiency. Bethlehem Steel was one such company to employ this technology. [12] Huge, usually single-cylinder horizontal engines burned blast ...
The "mother of all bubbles" is due to pop soon as U.S. outperformance has been inflated by massive amounts of debt, warned Ruchir Sharma, chair of Rockefeller International. The U.S. has become ...
A declared mayoral candidate, city Comptroller Brad Lander, is asking US health officials to determine whether ex-Gov. Andrew Cuomo's controversial March 25, 2020 order requiring nursing homes to ...
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