This article needs additional citations for verification .(September 2014) |
The Anglepoise lamp is a balanced-arm lamp designed in 1932 by British designer George Carwardine.
George Carwardine (1887–1947) was a car designer and a freelance design consultant specialising in vehicle suspension systems. [1] While developing new concepts for vehicle suspensions, he created a mechanism which he recognised had applications in other fields. He particularly saw its benefits for a task lamp. Despite many claims to the contrary, his concept had nothing whatsoever to do with mimicking the actions of the human arm. [2] The joints and spring tension allow the lamp to be moved into a wide range of positions which it will maintain without being clamped. [3] [4]
Carwardine applied to be a patent, number 404,615, [5] for a design using the mechanism on 4 July 1932, and manufactured the lamp himself in the workshops of his own company, Cardine Accessories, in Bath. [6] He soon found the interest and demand so great that he needed a major expansion or partner and, on 22 February 1934, entered into a licensing agreement with Herbert Terry and Sons in Redditch. [7] [8] Terry's manufactured and marketed the lamp, while Carwardine continued to develop the concept, producing a number of other versions and applications (for example, for supporting microphones). The original four-spring design was made for working environments, such as workshops and doctors' and dentists' surgeries, but he also designed a three-spring version for use in the home, patented on 10 February 1934. (patent number 433,617). [9]
The 1227 Anglepoise was released in 1935. It was primarily manufactured for the home and proved to be extremely popular. [10] The 1227 was hugely promoted by the Terry Spring Company and when England declared war on Germany on September 3 1939 the company ran an advert on the same day describing it as the "ideal blackout lamp". [11]
Although the Second World War had a detrimental effect on standard Anglepoise production, the Terry Spring Company was producing Anglepoise lamps for the navigator's station in bombers. According to the Anglepoise website, these were so well produced that when a crashed Vickers Wellington bomber was salvaged from Loch Ness in Scotland in 1985, the lamp still worked after being given a new battery – despite being submerged for around four decades. [12]
A key feature of the Anglepoise design and patent is the placement of all springs (either three or four) near the base. [13] The design was extensively copied by other companies, usually in simplified form, and is still in use. Some derivatives use a heavy balance weight instead of the springs. The most common version replaces the arm linkages with two independent parallelogram linkages, with a pair of light tension springs on each half of the arm.
The arm has been employed in other devices where it is necessary to hold an object stationary at a convenient point in space, notably the copy holder for typists and in some applications, the computer display screen.
The lamps have been made from a variety of materials over the years, evolving from the early full steel prototypes into later models made from brass and aluminium. [14]
Although the lamp is still marketed as an iconic British design, production for all lamps, except the 1227 Giant model, has been moved to China. [15]
In 1948 the Board of Governors of the BBC asked the head of the Variety Department, Michael Standing, to devise a guiding set of moral standards and protocols for the production of all BBC radio and television programmes. Standing produced what became known within the BBC as the "Green Book", whose purpose was to eradicate smut, innuendo and vulgarity from all BBC programmes. After producing the book Standing took to implementing his guidance with eccentric zeal. In June 1949 he issued a memo to all staff in which he forbade BBC employees to illuminate any room with an Anglepoise lamp unless the main ceiling or wall light was also illuminated: Standing held a firm belief that a man working at a desk in a confined space with only the light from a low-power lamp would nurture furtive ideas and produce degenerate programme material. Director General Sir William Haley later rescinded the Anglepoise lamp edict as unnecessary. [16]
An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a filament that is heated until it glows. The filament is enclosed in a glass bulb that is either evacuated or filled with inert gas to protect the filament from oxidation. Electric current is supplied to the filament by terminals or wires embedded in the glass. A bulb socket provides mechanical support and electrical connections.
An arc lamp or arc light is a lamp that produces light by an electric arc.
Sir Joseph Wilson Swan FRS was an English physicist, chemist, and inventor. He is known as an independent early developer of a successful incandescent light bulb, and is the person responsible for developing and supplying the first incandescent lights used to illuminate homes and public buildings, including the Savoy Theatre, London, in 1881.
Sir Paul Brierley Smith is an English luxury fashion designer. His reputation is founded on his designs for men's clothing, but his business has expanded into other areas as well. Smith was made a Royal Designer for Industry in 1991.
A kerosene lamp is a type of lighting device that uses kerosene as a fuel. Kerosene lamps have a wick or mantle as light source, protected by a glass chimney or globe; lamps may be used on a table, or hand-held lanterns may be used for portable lighting. Like oil lamps, they are useful for lighting without electricity, such as in regions without rural electrification, in electrified areas during power outages, at campsites, and on boats. There are three types of kerosene lamp: flat-wick, central-draft, and mantle lamp. Kerosene lanterns meant for portable use have a flat wick and are made in dead-flame, hot-blast, and cold-blast variants.
Sir Hiram Stevens Maxim was an American-born British inventor best known as the creator of the first automatic machine gun, the Maxim gun. Maxim held patents on numerous mechanical devices such as hair-curling irons, a mousetrap, and steam pumps. Maxim laid claim to inventing the lightbulb.
In electrical wiring, a light switch is a switch most commonly used to operate electric lights, permanently connected equipment, or electrical outlets. Portable lamps such as table lamps may have a light switch mounted on the socket, base, or in-line with the cord. Manually operated on/off switches may be substituted by dimmer switches that allow controlling the brightness of lamps as well as turning them on or off, time-controlled switches, occupancy-sensing switches, and remotely controlled switches and dimmers. Light switches are also found in flashlights, vehicles, and other devices.
Luxo Jr. is a 1986 American animated short film produced and released by Pixar. Written and directed by John Lasseter, the two-minute short film revolves around one larger and one smaller desk lamp. The larger lamp, named Luxo Sr., looks on while the smaller, "younger" Luxo Jr. plays exuberantly with a ball to the extent that it accidentally deflates. Luxo Jr. was Pixar's first animation after Ed Catmull and John Lasseter left the Lucasfilm Computer Division. The film is the source of Luxo Jr., the mascot of Pixar.
The iMac G4 is an all-in-one personal computer designed, manufactured, and sold by Apple Computer from January 2002 to August 2004. The computer is comprised of a hemispheric base that holds the computer components, including the PowerPC G4 processor, with a flatscreen liquid-crystal display (LCD) mounted above. The display is connected to the base via a stainless steel arm that allows the monitor to be tilted and swiveled.
Mathmos Limited is a British company that sells lighting products, most famously the lava lamp invented by its founder Edward Craven Walker. It is headquartered in its factory in Poole, Dorset.
Sir Kenneth Henry Grange was a British industrial designer, renowned for a wide range of designs for familiar, everyday objects.
Neon lighting consists of brightly glowing, electrified glass tubes or bulbs that contain rarefied neon or other gases. Neon lights are a type of cold cathode gas-discharge light. A neon tube is a sealed glass tube with a metal electrode at each end, filled with one of a number of gases at low pressure. A high potential of several thousand volts applied to the electrodes ionizes the gas in the tube, causing it to emit colored light. The color of the light depends on the gas in the tube. Neon lights were named for neon, a noble gas which gives off a popular orange light, but other gases and chemicals called phosphors are used to produce other colors, such as hydrogen (purple-red), helium, carbon dioxide (white), and mercury (blue). Neon tubes can be fabricated in curving artistic shapes, to form letters or pictures. They are mainly used to make dramatic, multicolored glowing signage for advertising, called neon signs, which were popular from the 1920s to 1960s and again in the 1980s.
A light fixture, light fitting, or luminaire is an electrical lighting device containing one or more light sources, such as lamps, and all the accessory components required for its operation to provide illumination to the environment. All light fixtures have a fixture body and one or more lamps. The lamps may be in sockets for easy replacement—or, in the case of some LED fixtures, hard-wired in place.
A bayonet mount or bayonet connector is a fastening mechanism consisting of a cylindrical male side with one or more radial pins, and a female receptor with matching L-shaped slot(s) and with spring(s) to keep the two parts locked together. The slots are shaped like a capital letter L with serif ; the pin slides into the vertical arm of the L, rotates across the horizontal arm, then is pushed slightly upwards into the short vertical "serif" by the spring; the connector is no longer free to rotate unless pushed down against the spring until the pin is out of the "serif".
John Richardson Wigham was a prominent lighthouse engineer of the 19th century.
A balanced-arm lamp, sometimes called a floating arm lamp, is a lamp with an adjustable folding arm which is constructed such that the force due to gravity is always counteracted by springs, regardless of the position of the arms of the lamp. Many lamp brands, as well as other devices, use this principle.
Oliver Blackburn Shallenberger was an American electrical engineer and inventor. He is associated with electrical inventions related to alternating current. He is most noted for inventing the first successful alternating current (AC) electrical meter, the forerunner of the modern electric meter. This was critical to general acceptance of AC power.
A lava lamp is a decorative lamp, invented in 1963 by British entrepreneur Edward Craven Walker, the founder of the lighting company Mathmos.
Jacob Jacobsen (1901-1996) was a Norwegian designer and founder of Luxo ASA.
Luxo Jr. is a semi-anthropomorphic toy desk lamp character used as the primary mascot of Pixar Animation Studios. He is the protagonist of the short film Luxo Jr. and appears on the production logo of every Pixar film, hopping into view and jumping on the capital letter "I" in "PIXAR" to flatten it ever since 1995. John Lasseter created the character, modeling it after his own Luxo brand lamp. In 2009, the manufacturer of Luxo lamps sued Disney, the parent company of Pixar, for selling Luxo Jr.-branded merchandise.
{{cite web}}
: CS1 maint: numeric names: authors list (link)