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Slotted Angle
Slotted angle (also sometimes referred to as slotted angle iron) is a system of reusable metal strips used to construct shelving, frames, work benches, equipment stands and other structures. The name derives, first, from the use of elongated slots punched into the metal at uniform intervals to enable assembly of structures fixed with nuts and bolts, and second, from the longitudinal folding of the metal strips to form a right angle. Invention Prototype slotted angle strips were developed by London-based engineer Demetrius Comino in the late 1930s,Darbyshire, Anthony, and Duckworth, Eric (2011), ''Demetrius Comino: A life and legacy of achievement'', Comino Foundation. as he sought alternatives to conventional wooden shelving in his printing works. Comino owned an engineering business, Dexion Ltd, which began production in 1947 and the steel slotted angle strips eventually became known as Dexion. The prior existence of Meccano prevented a generic patentProfile: Demetrius Comino "The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shelf (storage)
A shelf ( : shelves) is a flat, horizontal plane used for items that are displayed or stored in a home, business, store, or elsewhere. It is raised off the floor and often anchored to a wall, supported on its shorter length sides by brackets, or otherwise anchored to cabinetry by brackets, dowels, screws, or nails. It can also be held up by columns or pillars. A shelf is also known as a ''counter'', ''ledge'', ''mantel'', or ''rack''. Tables designed to be placed against a wall, possibly mounted, are known as console tables, and are similar to individual shelves. A shelf can be attached to a wall or other vertical surface, be suspended from a ceiling, be a part of a free-standing frame unit, or it can be part of a piece of furniture such as a cabinet, bookcase, entertainment center, headboard, and so on. Usually, two to six shelves make up a unit, each shelf being attached perpendicularly to the vertical or diagonal supports and positioned parallel one above the other. Free-st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London
London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a major settlement for two millennia. The City of London, its ancient core and financial centre, was founded by the Romans as '' Londinium'' and retains its medieval boundaries.See also: Independent city § National capitals The City of Westminster, to the west of the City of London, has for centuries hosted the national government and parliament. Since the 19th century, the name "London" has also referred to the metropolis around this core, historically split between the counties of Middlesex, Essex, Surrey, Kent, and Hertfordshire, which largely comprises Greater London, governed by the Greater London Authority.The Greater London Authority consists of the Mayor of London and the London Assembly. The London Mayor is distinguished fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineer
Engineers, as practitioners of engineering, are professionals who invent, design, analyze, build and test machines, complex systems, structures, gadgets and materials to fulfill functional objectives and requirements while considering the limitations imposed by practicality, regulation, safety and cost. "Science is knowledge based on our observed facts and tested truths arranged in an orderly system that can be validated and communicated to other people. Engineering is the creative application of scientific principles used to plan, build, direct, guide, manage, or work on systems to maintain and improve our daily lives." The word ''engineer'' (Latin ) is derived from the Latin words ("to contrive, devise") and ("cleverness"). The foundational qualifications of an engineer typically include a four-year bachelor's degree in an engineering discipline, or in some jurisdictions, a master's degree in an engineering discipline plus four to six years of peer-reviewed professiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Demetrius Comino
Demetrius Comino OBE (4 September 1902 – 27 September 1988)Darbyshire, Anthony, and Duckworth, Eric (2011), ''Demetrius Comino: A life and legacy of achievement'', Comino Foundation. – (accessed: 22 February 2012) was an Australian engineer, inventor, entrepreneur and philanthropist during the 20th century. He invented the slotted angle steel construction system, Dexion, which became widely used internationally for commercial shelving, storage racking, exhibition stands, accommodation, and for domestic purposes. In 1971 he founded the Comino Foundation, an educational charity. Early career Demetrius (always known as 'Dimitri') Comino (Greek: Δημήτριος Κομηνός) was born in Sydney, the eldest son of a Greek oyster merchant who had migrated from the island of Kythira in 1884. He demonstrated his creativity aged 12 when he invented a toy submarine, and after attending Sydney Grammar School, travelled to London in 1921 to study electrical engineering at Universit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dexion
Dexion is a company name and brand particularly associated with the development of the "Dexion" slotted angle steel strip construction system, widely used since the 1950s for domestic and commercial shelving, storage racking, exhibition stands and accommodation purposes. The original UK-based Dexion Ltd manufacturing company spawned several subsidiaries before eventually ceasing trading in 2003. Its bankruptcy saw the start of a long-running pension dispute with former workers. Manufacture of Dexion products was taken over by the Norway-based Constructor Group, since 2018 part of Gonvarri Material Handling. Dexion (Australia) Pty Ltd, spun off as a separate company in 2003, continues to trade successfully in the Australasian and south-east Asia markets. History Formation Dexion Ltd (from the Greek for 'right') was established in 1937 in London by Australia-born engineer and printer Demetrius Comino, originally to deliver printing-related products.Darbyshire, Anthony, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meccano
Meccano is a brand of scale model, model construction system created in 1898 by Frank Hornby in Liverpool, England. The system consists of reusable metal strips, plates, Structural steel#Common structural shapes, angle girders, wheels, axles and gears, and plastic parts that are connected using nut (hardware), nuts and bolt (fastener), bolts. It enables the building of working models and mechanical devices. In 1913, a very similar construction set was introduced in the United States under the brand name Erector Set, Erector. In 2000, Meccano bought the Erector brand and unified its presence on all continents. In 2013, the Meccano brand was acquired by the Canadian toy company Spin Master. Meccano maintains a manufacturing facility in Calais, France. History First sets In 1901 Frank Hornby, a clerk from Liverpool, England, invented and patented a new toy called "Mechanics Made Easy" that was based on the principles of mechanical engineering. It was a model construction kit con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel
Steel is an alloy made up of iron with added carbon to improve its strength and fracture resistance compared to other forms of iron. Many other elements may be present or added. Stainless steels that are corrosion- and oxidation-resistant typically need an additional 11% chromium. Because of its high tensile strength and low cost, steel is used in buildings, infrastructure, tools, ships, trains, cars, machines, electrical appliances, weapons, and rockets. Iron is the base metal of steel. Depending on the temperature, it can take two crystalline forms (allotropic forms): body-centred cubic and face-centred cubic. The interaction of the allotropes of iron with the alloying elements, primarily carbon, gives steel and cast iron their range of unique properties. In pure iron, the crystal structure has relatively little resistance to the iron atoms slipping past one another, and so pure iron is quite ductile, or soft and easily formed. In steel, small amounts of carbon, other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aluminium
Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. It has a great affinity towards oxygen, and forms a protective layer of oxide on the surface when exposed to air. Aluminium visually resembles silver, both in its color and in its great ability to reflect light. It is soft, non-magnetic and ductile. It has one stable isotope, 27Al; this isotope is very common, making aluminium the twelfth most common element in the Universe. The radioactivity of 26Al is used in radiodating. Chemically, aluminium is a post-transition metal in the boron group; as is common for the group, aluminium forms compounds primarily in the +3 oxidation state. The aluminium cation Al3+ is small and highly charged; as such, it is polarizing, and bonds aluminium forms tend towards covalency. The strong affinity tow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sheet Metal
Sheet metal is metal formed into thin, flat pieces, usually by an industrial process. Sheet metal is one of the fundamental forms used in metalworking, and it can be cut and bent into a variety of shapes. Thicknesses can vary significantly; extremely thin sheets are considered foil or leaf, and pieces thicker than 6 mm (0.25 in) are considered plate, such as plate steel, a class of structural steel. Sheet metal is available in flat pieces or coiled strips. The coils are formed by running a continuous sheet of metal through a roll slitter. In most of the world, sheet metal thickness is consistently specified in millimeters. In the U.S., the thickness of sheet metal is commonly specified by a traditional, non-linear measure known as its gauge. The larger the gauge number, the thinner the metal. Commonly used steel sheet metal ranges from 30 gauge to about 7 gauge. Gauge differs between ferrous ( iron-based) metals and nonferrous metals such as aluminum or copper. Cop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machine Press
A forming press, commonly shortened to press, is a machine tool that changes the shape of a work-piece by the application of pressure. The operator of a forming press is known as a press-tool setter, often shortened to tool-setter. Presses can be classified according to * their mechanism: hydraulic, mechanical, pneumatic; * their function: forging presses, stamping presses, press brakes, punch press, etc. * their structure, e.g. Knuckle-joint press, screw press * their controllability: conventional vs. servo-presses Shop Press Typically consisting of a simple rectangular frame, often fabricated from C-channel or tubing, containing a bottle jack or hydraulic cylinder to apply pressure via a ram to a work-piece. Often used for general-purpose forming work in the auto mechanic shop, machine shop, garage or basement shops, etc. Typical shop presses are capable of applying between 1 and 30 tons pressure, depending on size and construction. Lighter-duty versions are often c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galvanization
Galvanization or galvanizing (American and British English spelling differences, also spelled galvanisation or galvanising) is the process of applying a protective zinc coating to steel or iron, to prevent rusting. The most common method is hot-dip galvanization, hot-dip galvanizing, in which the parts are submerged in a bath of hot, molten zinc. Protective action The zinc coating, when intact, prevents corrosive substances from reaching the underlying iron. Additional electroplating such as a chromate conversion coating may be applied to provide further Passivation (chemistry)#Surface passivation, surface passivation to the substrate material. History and etymology The earliest known example of galvanized iron was encountered by Europeans on 17th-century Indian armour in the Royal Armouries Museum collection. The term "galvanized" continues to be used metaphorically of any stimulus which results in activity by a person or group of people. In modern usage, the term "galva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
