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Peterborough Lift Lock
The Peterborough Lift Lock is a boat lift located on the Trent Canal in the city of Peterborough, Ontario, Canada, and is Lock 21 on the Trent-Severn Waterway. For many years, the lock's dual lifts were the highest hydraulic boat lifts in the world, raising boats . This was a considerable accomplishment in the first years of the 20th century, when conventional locks usually only had a rise. In the 1980s, a visitor centre was built beside the lock. It offers interactive simulations of going over the lift lock in a boat, and historical exhibits detailing the construction of the lift lock. Residents and visitors skate on the canal below the lift lock in the winter. The Peterborough Lift Lock was designated a National Historic Site in 1979, and was named an Historic Mechanical Engineering Landmark by the American Society of Mechanical Engineers The American Society of Mechanical Engineers (ASME) is an American professional association that, in its own words, "promotes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canal Reach
A canal pound (from impound), reach, or level (American usage), is the stretch of level water impounded between two canal locks. Canal pounds can vary in length from the non-existent, where two or more immediately adjacent locks form a lock staircase, to many kilometres/miles. The longest canal pound in the United Kingdom is on the Bridgewater Canal between the stop lock on the Trent and Mersey Canal at Preston Brook (Dutton Stop Lock No 76) and the start of the Leeds and Liverpool Canal near Leigh (Poolstock Bottom Lock No 2), a distance of . Another long pound is on the Kennet and Avon Canal between Wootton Rivers Bottom Lock and Caen Hill top lock. The longest level on the Erie Canal in New York was the so-called '60 mile level' (actually ) between Henrietta and Lockport. History Pounds came into being with the development of pound locks to replace the earlier flash locks. A key feature of pound locks was that the intervening level between locks remained largely constant, as o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canal Lock
A lock is a device used for raising and lowering boats, ships and other watercraft between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a chamber in a permanently fixed position in which the water level can be varied. (In a caisson lock, a boat lift, or on a canal inclined plane, it is the chamber itself (usually then called a caisson) that rises and falls.) Locks are used to make a river more easily navigable, or to allow a canal to cross land that is not level. Over time, more and larger locks have been used in canals to allow a more direct route to be taken. History Ancient Egypt In Ancient Egypt, the river-locks was probably part of the Canal of the Pharaohs: Ptolemy II is credited by some for being the first to solve the problem of keeping the Nile free of salt water when his engineers invented the lock around 274/273 BC. Ancient China During 960–1279 CE, the natural extension of the flash lock, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Boat Lifts
This list includes all types of constructions to lift or lower boats between two levels of a waterway, such as boat lifts, canal inclined planes, portage railways and water slopes, but excluding conventional locks. Belgium * Canal du Centre lift No. 1 at Houdeng-Goegnies * Lifts on the old Canal du Centre: No. 2 at Houdeng-Aimeries, No. 3 at Strépy-Bracquegnies, No. 4 at Thieu *Strépy-Thieu boat lift at Thieu in the municipality of Le Rœulx *Ronquières inclined plane at Ronquières in the municipality of Braine-le-Comte Canada * Trent–Severn boat lifts **Kirkfield Lift Lock **Peterborough Lift Lock **Big Chute Marine Railway **Swift Rapids Marine Railway (replaced in 1965 with a traditional boat lock) China * Danjiangkou dam boat lift, in Hubei Province, capable of lifting vessels of 450 tons displacement. * Geheyan dam boat lift, also in Hubei Province, capable of lifting vessels of 300 tons displacement. The dam was completed in 1994, but technical difficulties dela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dominion Bridge Company
The Dominion Bridge Company, Limited was a Canadian steel bridge constructor originally based in Lachine, Quebec. From the core business of steel bridge component fabrication, the company diversified into related areas such as the fabrication of holding tanks for pulp mills and skyscraper framing. Other Canadian plants were located in Amherst, NS, Toronto, ON, Winnipeg, MB, Regina, SK, Saskatoon, SK, Calgary, AB, Edmonton, AB, Richmond, BC and Burnaby, BC. In the 1960s and 1970s, Dominion Bridge expanded internationally and renamed itself AMCA International (AMCA name effective June 1, 1981). This name was later changed to United Dominion Industries. To keep name recognition alive, the company continued to call its Canadian division 'Dominion Bridge'. Between 1979 and 1988, the company's Lachine plant operated under the auspices of a subsidiary called Dominion Bridge-Sulzer Inc., which was co-owned by AMCA International and Sulzer Inc. The Dominion Bridge facility in Burnaby ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1896 Canadian Federal Election
The 1896 Canadian federal election was held on June 23, 1896, to elect members of the House of Commons of Canada of the 8th Parliament of Canada. Though the Conservative Party, led by Prime Minister Charles Tupper, won a plurality of the popular vote, the Liberal Party, led by Wilfrid Laurier, won the majority of seats (with only 41 percent of the vote) to form the next government. The election ended 18 years of Conservative rule. This was first election in Canada to produce a House of Commons with elected members of four parties. The Liberals and Conservative shared the chamber with elected members of the farmer-based Patrons of Industry and McCarthyites. Description The governing Conservative Party, since the death of John A. Macdonald in 1891, was disorganized. Following Macdonald's death, John Abbott spent a year as Prime Minister before handing over to John Thompson. Thompson proved a relatively popular Prime Minister, but his sudden death in December 1894 resulted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
England
England is a Countries of the United Kingdom, country that is part of the United Kingdom. It is located on the island of Great Britain, of which it covers about 62%, and List of islands of England, more than 100 smaller adjacent islands. It shares Anglo-Scottish border, a land border with Scotland to the north and England–Wales border, another land border with Wales to the west, and is otherwise surrounded by the North Sea to the east, the English Channel to the south, the Celtic Sea to the south-west, and the Irish Sea to the west. Continental Europe lies to the south-east, and Ireland to the west. At the 2021 United Kingdom census, 2021 census, the population was 56,490,048. London is both List of urban areas in the United Kingdom, the largest city and the Capital city, capital. The area now called England was first inhabited by modern humans during the Upper Paleolithic. It takes its name from the Angles (tribe), Angles, a Germanic peoples, Germanic tribe who settled du ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belgium
Belgium, officially the Kingdom of Belgium, is a country in Northwestern Europe. Situated in a coastal lowland region known as the Low Countries, it is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to the south, and the North Sea to the west. Belgium covers an area of and has a population of more than 11.8 million; its population density of ranks List of countries and dependencies by population density, 22nd in the world and Area and population of European countries, sixth in Europe. The capital and Metropolitan areas in Belgium, largest metropolitan region is City of Brussels, Brussels; other major cities are Antwerp, Ghent, Charleroi, Liège, Bruges, Namur, and Leuven. Belgium is a parliamentary system, parliamentary constitutional monarchy with a complex Federation, federal system structured on regional and linguistic grounds. The country is divided into three highly autonomous Communities, regions and language areas o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlantic, North Atlantic, the French West Indies, and List of islands of France, many islands in Oceania and the Indian Ocean, giving it Exclusive economic zone of France, one of the largest discontiguous exclusive economic zones in the world. Metropolitan France shares borders with Belgium and Luxembourg to the north; Germany to the northeast; Switzerland to the east; Italy and Monaco to the southeast; Andorra and Spain to the south; and a maritime border with the United Kingdom to the northwest. Its metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea. Its Regions of France, eighteen integral regions—five of which are overseas—span a combined area of and hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Birdsall Rogers
Richard Birdsall Rogers (15 January 1857 – 2 October 1927) was a Canadian civil and mechanical engineer whose most significant achievement was the design of the Peterborough Lift Lock, a boat lift at Peterborough, Ontario, Canada. From 1874 to 1878, he studied at McGill College, Montreal, graduating with a degree in civil and mechanical engineering. In 1879, he was appointed a Provincial Land Surveyor and, in 1880, he became Dominion Land Surveyor, a position he retained until 1884 when he entered private practice, taking up the post of Superintending Engineer of the Trent Canal. In this role, Rogers suggested the use of hydraulic lift locks to the Minister of Railways and Canals, John Haggart, who commissioned him to travel to Europe to study existing boat lifts in France (the Fontinettes boat lift), Belgium ( Lifts on the old Canal du Centre) and England (the Anderton Boat Lift near Northwich in Cheshire Cheshire ( ) is a Ceremonial counties of England, ceremo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siemens
Siemens AG ( ) is a German multinational technology conglomerate. It is focused on industrial automation, building automation, rail transport and health technology. Siemens is the largest engineering company in Europe, and holds the position of global market leader in industrial automation and industrial software. The origins of the conglomerate can be traced back to 1847 to the ''Telegraphen Bau-Anstalt von Siemens & Halske'' established in Berlin by Werner von Siemens and Johann Georg Halske. In 1966, the present-day corporation emerged from the merger of three companies: Siemens & Halske, Siemens-Schuckert, and Siemens-Reiniger-Werke. Today headquartered in Munich and Berlin, Siemens and its subsidiaries employ approximately 320,000 people worldwide and reported a global revenue of around €78 billion in 2023. The company is a component of the DAX and Euro Stoxx 50 stock market indices. As of December 2023, Siemens is the second largest German company by market ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Counterweight
A counterweight is a weight (object), weight that, by applying an opposite force, provides balance and stability of a machine, mechanical system. The purpose of a counterweight is to make lifting the load faster and more efficient, which saves energy and causes less wear and tear on the lifting machine. Counterweights are often used in traction force, traction elevator, lifts (elevators), Crane (machine), cranes and fair, funfair rides. In these applications, the expected load multiplied by the distance that load will be spaced from the central support (called the "tipping point") must be equal to the counterweight's mass times its distance from the tipping point in order to prevent over-balancing either side. This distance times mass is called the Moment (physics), load moment. By extension, a counterbalance force balances or offsets another force, as when two objects of equal weight, power, or influence are acting in opposition to each other. Examples ;Trebuchet: There are fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
