The following list of Connecticut companies includes notable companies that are, or once were, headquartered in Connecticut.
Samuel Colt was an American inventor, industrialist, and businessman who established Colt's Patent Fire-Arms Manufacturing Company and made the mass production of revolvers commercially viable.
Colt's Manufacturing Company, LLC is an American firearms manufacturer, founded in 1855 by Samuel Colt that has become a subsidiary of Czech holding company Colt CZ Group. It is the successor corporation to Colt's earlier firearms-making efforts, which started in 1936. Colt is known for the engineering, production, and marketing of firearms, especially during the century from 1850 through World War I, when it dominated its industry and was a seminal influence on manufacturing technology. Colt's earliest designs played a major role in the popularization of the revolver and the shift away from single-shot pistols. Although Samuel Colt did not invent the revolver, his designs resulted in the first very successful model.
The United Aircraft and Transport Corporation was formed in 1929, when William Boeing of Boeing Airplane & Transport Corporation teamed up with Frederick Rentschler of Pratt & Whitney to form a large, vertically integrated, amalgamated firm, uniting business interests in all aspects of aviation—a combination of airframe and aircraft engine manufacturing and airline business, to serve all aviation markets, both civil aviation and military aviation.
United Technologies Corporation (UTC) was an American multinational conglomerate headquartered in Farmington, Connecticut. It researched, developed, and manufactured products in numerous areas, including aircraft engines, aerospace systems, HVAC, elevators and escalators, fire and security, building automation, and industrial products, among others. UTC was also a large military contractor, getting about 10% of its revenue from the U.S. government. In April 2020, UTC merged with the Raytheon Company to form Raytheon Technologies, later renamed RTX Corporation.
Interchangeable parts are parts that are identical for practical purposes. They are made to specifications that ensure that they are so nearly identical that they will fit into any assembly of the same type. One such part can freely replace another, without any custom fitting, such as filing. This interchangeability allows easy assembly of new devices, and easier repair of existing devices, while minimizing both the time and skill required of the person doing the assembly or repair.
Amos Whitney was a mechanical engineer and inventor who co-founded the Pratt & Whitney company. He was a member of the prominent Whitney family.
A headstamp is the markings on the bottom of a cartridge case designed for a firearm. It usually tells who manufactured the case. If it is a civilian case it often also tells the caliber: if it is military, the year of manufacture is often added.
Colt Defense LLC, together with its subsidiaries, is an American designer, developer and manufacturer of small arms weapons systems for individual soldiers and law enforcement personnel. It is headquartered in West Hartford, Connecticut. The company traces its portfolio of products and services back to Colt's Manufacturing Company and prior to that to Colt's Patent Firearms Manufacturing Company.
Shawmut, according to 19th-century scholarship, is a term derived from the Algonquian word Mashauwomuk referring to the region of present-day Boston, Massachusetts. It appears in a number of present-day placenames.
United States Fire-Arms Manufacturing Company, Inc. was a privately held firearms-manufacturing firm based in Hartford, Connecticut. Until 2011, United States Fire-Arms Manufacturing Company, Inc. was known for producing single action revolvers, which were clones of the Colt Single Action Army revolver. The factory was located "Under the Blue Dome", in the East Armory building of the former Colt Armory complex, where Colt's Manufacturing Company produced many of their classic firearms in the late 19th and early 20th centuries.
Stamford-Bridgeport-Norwalk is a metropolitan area in the U.S. state of Connecticut. The area is located in Southwestern Connecticut. In its most conservative form, the area consists of the City of Bridgeport and five surrounding towns—Easton, Fairfield, Monroe, Stratford, and Trumbull. This definition of the Stamford area has a population of more than 305,000 and is within the Stamford -Bridgeport-Norwalk-Danbury metropolitan statistical area, which consists of all of Fairfield County, Connecticut. The estimated 2015 county population was 948,053. The area is numbered as part of the New York-Newark Combined Statistical Area NY-NJ-CT-PA by the United States Census Bureau.
The evolution of U.S. manufacturing and the American industrial revolution are clearly reflected in the history of Connecticut. Between the birth of the U.S. patent system in 1790 and 1930, Connecticut had more patents issued per capita than any other state; in the 19th century, when one in three thousand people were issued a U.S. patent, one in 700-1000 Connecticut inventors were issued patents. Connecticut's first recorded invention granted a U.S. patent was a lapidary machine, by Abel Buell of Killingworth, in 1765.
The Colt Armory is a historic factory complex for the manufacture of firearms, created by Samuel Colt. It is located in Hartford, Connecticut along the Connecticut River, and as of 2008 is part of the Coltsville Historic District, named a National Historic Landmark District. It is slated to become part of Coltsville National Historical Park, now undergoing planning by the National Park Service.
The Hartford Steam Boiler Inspection and Insurance Company (HSB) is a global specialty insurer and reinsurer headquartered in Hartford, Connecticut. It was founded in 1866 and is the largest provider of equipment breakdown insurance and related inspection services in North America serving over five million commercial locations.
Daniel Leavitt was an early American inventor who, with his partner Edwin Wesson, patented the first revolver after Samuel Colt's, and subsequently manufactured one of the first American revolving pistols. The innovative design was manufactured only briefly before a patent suit by Colt forced the company to stop producing the Leavitt & Wesson Dragoon revolver. But Leavitt's early patents, and those of his partner Wesson, stoked competition and helped drive the technological and manufacturing boom that produced the modern firearms industry.
Robert Hillberg was a firearm designer and the head of Research & Development at the High Standard Manufacturing Company. His designs included the folding shotgun stock, the Whitney Wolverine lightweight pistol, Wildey .45 gas-operated pistol, COP .357 Derringer pistol, and M60 machine gun. Hillberg developed a variety of insurgency weapons, primarily multiple barrel shotguns, which could be covertly distributed to partisan forces fighting in the United States' national interests. Gun Digest editors have described Hillberg as a "national treasure."
Christopher Miner Spencer was an American inventor, from Manchester, Connecticut, who invented the Spencer repeating rifle, one of the earliest models of lever-action rifle, a steam powered "horseless carriage", and several other inventions. He developed the first fully automatic turret lathe, which in its small- to medium-sized form is also known as a screw machine.
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