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Originally named Allen Manufacturing Company, the business produced hexagonal set screws and wrenches to fasten them. The terms "Allen wrench" (American English) and "Allen key" (British English) [ 3] are derived from the Allen brand name and refer to the generic product category "hex keys". W.G. Allen [ 4] filed the first related patent in ...
Harmonic balancer lower pulley on a four-cylinder engine. A harmonic damper is a device fitted to the free (accessory drive) end of the crankshaft of an internal combustion engine to counter torsional and resonance vibrations from the crankshaft. This device must be an interference fit to the crankshaft in order to operate in an effective manner.
Allen-Bradley is the brand-name of a line of factory automation equipment owned by Rockwell Automation.The company, with revenues of approximately US $6.4 billion in 2013, manufactures programmable logic controllers (), human-machine interfaces, sensors, safety components and systems, software, drives and drive systems, contactors, motor control centers, and systems of such products.
Rockwell Automation, Inc. is an American provider of industrial automation and digital transformation technologies. Brands include Allen-Bradley, FactoryTalk software and LifecycleIQ Services. Headquartered in Milwaukee, Wisconsin, Rockwell Automation employs approximately 26,000 people and has customers in more than 100 countries worldwide.
Tuned mass damper. A tuned mass damper ( TMD ), also known as a harmonic absorber or seismic damper, is a device mounted in structures to reduce mechanical vibrations, consisting of a mass mounted on one or more damped springs. Its oscillation frequency is tuned to be similar to the resonant frequency of the object it is mounted to, and reduces ...
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Hammacher Schlemmer began as a hardware store specializing in hard-to-find tools in the Bowery district of New York City in 1848. Owned by proprietors Charles Tollner and Mr. R. Stern, [ 2] it became one of the first national hardware stores. A few months later, Stern withdrew and Tollner continued the business until 1859, moving in 1857 to 209 ...
Act to Incorporate the Massachusetts Institute of Technology, Acts of 1861, Chapter 183 Stereographic card showing an MIT mechanical drafting studio, 19th century (photo by E. L. Allen, left/right inverted) Original Rogers Building, Back Bay, Boston, c. 1901 In 1859, a proposal was submitted to the Massachusetts General Court to use newly filled lands in Back Bay, Boston for a "Conservatory of ...