|
Daboll Trumpet
A Daboll trumpet is an air trumpet foghorn which was developed by an American, Celadon Leeds Daboll, of New London, Connecticut. It was basically a small coal-fired hot air engine, which compressed air in a cylinder on top of which was a reed horn. The Daboll trumpet, consists of a steel reed vibrating within a horn, which uses the hot air engine to force cold air by means of an air pump into a boiler, from which it escapes into the horn through a valve, causing the vibrations of the reed, which are regulated by an automatic cam. Daboll's cousin, Charles Miner Daboll (1823-), inventor of the Daboll bushing, is credited with developing the Daboll trumpet for practical use. The following citation is from: ''Scientific American Supplement'', Vol. XIX, No. 470, Jan. 3, 1885. The Daboll trumpet was invented by Mr. C.L. Daboll, of Connecticut, who was experimenting to meet the announced wants of the United States Lighthouse Board. The largest consists of a huge trumpet seventeen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CL Daboll 1860 Fog Alarm Patent
CL or cl may refer to: Arts and entertainment * CL (rapper) or Lee Chae-rin (born 1991), singer and rapper, former leader of the K-pop girl group 2NE1 * Creative Loafing, a newspaper publisher Brands and enterprises * Colgate-Palmolive's NYSE stock symbol * Companhia das Lezírias, an agribusiness company in Portugal Computing and technology * , the command-line C/C++ compiler for Microsoft Visual C++ * .cl, Internet country code top-level domain for Chile * CL register, the low byte of an X86 16-bit CX register * CAS latency, a measure used in computer memory * Common Lisp, a programming language * Common Logic, a framework for a family of logic languages * Control Language, a scripting language for the IBM AS/400 midrange platform Industry and technology * CL, the prefix for Canadair manufactured aircraft model numbers * Caseless ammunition Organizations * Catholic League (U.S.), also known as The Catholic League for Religious and Civil Rights * Communion and Libera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foghorn
A foghorn or fog signal is a device that uses sound to warn vehicles of navigational hazards such as rocky coastlines, or boats of the presence of other vessels, in foggy conditions. The term is most often used in relation to marine transport. When visual navigation aids such as lighthouses are obscured, foghorns provide an audible warning of rock outcrops, shoals, headlands, or other dangers to shipping. Description All foghorns use a vibrating column of air to create an audible tone, but the method of setting up this vibration differs. Some horns, such as the Daboll trumpet, used vibrating plates or metal reeds, a similar principle to a modern electric car horn. Others used air forced through holes in a rotating cylinder or disk, in the same manner as a siren. Semi-automatic operation of foghorns was achieved by using a clockwork mechanism (or "coder") to sequentially open the valves admitting air to the horns; each horn was given its own timing characteristics to help marine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celadon Leeds Daboll
Celadon Leeds Daboll (July 18, 1818 in Groton, Connecticut – October 13, 1866 in New London, Connecticut), was a merchant in New London, Connecticut. From 1854 to 1861 he was employed in the U.S. Department of the Interior in Washington, D.C. He conceived the idea of applying the principle of the clarinet to a large trumpet, to serve as a fog signal for mariners, known as the Daboll trumpet A Daboll trumpet is an air trumpet foghorn which was developed by an American, Celadon Leeds Daboll, of New London, Connecticut. It was basically a small coal-fired hot air engine, which compressed air in a cylinder on top of which was a reed .... References 1818 births 1866 deaths American civil servants People from Groton, Connecticut {{Connecticut-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New London, Connecticut
New London is a seaport city and a port of entry on the northeast coast of the United States, located at the mouth of the Thames River in New London County, Connecticut. It was one of the world's three busiest whaling ports for several decades beginning in the early 19th century, along with Nantucket and New Bedford, Massachusetts. The wealth that whaling brought into the city furnished the capital to fund much of the city's present architecture. The city subsequently became home to other shipping and manufacturing industries, but it has gradually lost most of its industrial heart. New London is home to the United States Coast Guard Academy, Connecticut College, Mitchell College, and The Williams School. The Coast Guard Station New London and New London Harbor is home port to the Coast Guard Cutter ''Coho'' and the Coast Guard's tall ship ''Eagle''. The city had a population of 27,367 at the 2020 census. The Norwich–New London metropolitan area includes 21 towns and 274,055 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hot Air Engine
A hot air engine (historically called an air engine or caloric engine) is any heat engine that uses the expansion and contraction of air under the influence of a temperature change to convert thermal energy into mechanical work. These engines may be based on a number of thermodynamic cycles encompassing both open cycle devices such as those of Sir George Cayley and John Ericsson and the closed cycle engine of Robert Stirling. Hot air engines are distinct from the better known internal combustion based engine and steam engine. In a typical implementation, air is repeatedly heated and cooled in a cylinder and the resulting expansion and contraction are used to move a piston and produce useful mechanical work. Definition The term "hot air engine" specifically excludes any engine performing a thermodynamic cycle in which the working fluid undergoes a phase transition, such as the Rankine cycle. Also excluded are conventional internal combustion engines, in which heat is added to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daboll Bushing
{{Surname ...
Daboll is a surname. Notable people with the surname include: * Brian Daboll (born 1975), Canadian-born American football coach *Celadon Leeds Daboll (1818–1866), American merchant and inventor *Nathan Daboll (1750–1818), American educator *Nathan Daboll (politician) (1780–1863), American politician, judge, and author See also *Daboll trumpet A Daboll trumpet is an air trumpet foghorn which was developed by an American, Celadon Leeds Daboll, of New London, Connecticut. It was basically a small coal-fired hot air engine, which compressed air in a cylinder on top of which was a reed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Ann Light
The Cape Ann Light Station on Thacher Island, off Cape Ann in Rockport, Massachusetts, is nationally significant as the last light station to be established under colonial rule and the first station in the United States to mark a navigational hazard rather than a harbor entrance. The current pair of lighthouses were built in 1861. They were both equipped with first order Fresnel lenses, which stood approximately high and weighed several tons (tonnes). After being decommissioned in the early 1980s, the lens from the south tower was moved to the U.S. Coast Guard Museum at the United States Coast Guard Academy in New London, Connecticut. In 2013 a joint effort by the Cape Ann Museum and the Thacher Island Association brought the lens back to Cape Ann. The first order lens is now on display at the Cape Ann Museum in Gloucester, Massachusetts. When these lights were built, there was no way to produce a flashing light and, occasionally mariners would confuse one light for another ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Execution Rocks Light
Execution Rocks Light is a lighthouse in the middle of Long Island Sound on the border between New Rochelle and Sands Point, New York. It stands tall, with a white light flashing every 10 seconds. The granite tower is painted white with a brown band around the middle. It has an attached stone keeper's house which has not been inhabited since the light was automated in 1979. History This island on which this lighthouse sits is claimed to derive its name from colonial New York, when slaveowning settlers of Sands Point murdered enslaved people by chaining them to the rocks during high tide to let them drown; this tale is first recorded by Robert Caro in 1974. A 1964 account in ''The Journal of Long Island History'' claims that in fact, murderers were manacled with chains to staples driven into the rock at low tide. A more likely etymology is that the British Admiralty named them Executioner's Rocks because so many ships ran aground on the treacherous rocks. References to "the Exe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monhegan Island Light
Monhegan Island Light is a lighthouse on Monhegan Island, Maine. It was first established in 1824. The present structure was built in 1850. It was Alexander Parris's last significant design. It is the second highest light in Maine — Seguin Light, with a 6-foot taller tower, is 2 feet higher in elevation. It was listed on the National Register of Historic Places as Monhegan Island Lighthouse and Quarters on May 7, 1980, reference number 80000239. Description and history Monhegan Island Light stands on a hill near the center of Monhegan Island. The lighthouse complex includes the tower, keeper's house, storage building, and oil house. The tower is a circular structure built out granite blocks with sloping walls, and is tall, with the lantern house mounted on top. A brick entry house, with gabled roof, is attached to the south side of the tower. The storage building is a single-story wood-frame structure, and the oil house is a small brick structure with a gabled roof. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manana Island Sound Signal Station
The Manana Island Sound Signal Station is an active fog signal station on Manana Island, Maine, United States. Established in 1855, it is one of the only separately managed fog signals in the United States, having been operationally independent of Monhegan Island Light for most of its existence. It is also home to the only known fog signal trumpet tower, built in 1889. The station was listed on the National Register of Historic Places as Manana Island Fog Signal Station in 2002. Description Monhegan is a small island community off the coast of Maine, consisting of Monhegan Island, and a number of nearby smaller islands. Its harbor is situated in the channel between Monhegan and Manana Islands, just west of the main island. The Manana Island Sound Signal Station is located at the highest point on Manana Island, and consists of several buildings and structures. The present signal equipment is housed in small brick building, built in 1906 on the foundation of the original sign ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boston Light
Boston Light is a lighthouse located on Little Brewster Island in outer Boston Harbor, Massachusetts. The first lighthouse to be built on the site dates back to 1716, and was the first lighthouse to be built in what is now the United States. The current lighthouse dates from 1783, is the second oldest working lighthouse in the United States (after Sandy Hook Lighthouse in New Jersey), and is the only lighthouse to still be actively staffed by the United States Coast Guard, being automated in 1998 though there is still a keeper acting as tour guide. The structure was designated a National Historic Landmark in 1964. History The first keeper of Boston Light was George Worthylake, who drowned, along with his wife and daughter, when returning to the island in 1718. During the American Revolution, the original lighthouse was held by British forces and was attacked and burnt on two occasions by American forces. As the British forces withdrew in 1776, they blew up the tower and complete ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portland Head Light
Portland Head Light is a historic lighthouse in Cape Elizabeth, Maine. The light station sits on a head of land at the entrance of the primary shipping channel into Portland Harbor, which is within Casco Bay in the Gulf of Maine. Completed in 1791, it is the oldest lighthouse in Maine. The light station is automated, and the tower, beacon, and foghorn are maintained by the United States Coast Guard, while the former lighthouse keepers' house is a maritime museum within Fort Williams Park. History Construction began in 1787 at the directive of George Washington, and was completed on January 10, 1791, using a fund of $1,500, established by him. Whale oil lamps were originally used for illumination. In 1855, following formation of the Lighthouse Board, a fourth-order Fresnel lens was installed; that lens was replaced by a second-order Fresnel lens, which was replaced later by an aerobeacon in 1958. That lens was replaced with a DCB-224 aerobeacon in 1991. The DCB-224 aerobeacon i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
