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Treadmill
A treadmill is a device generally used for walking, running, or climbing while staying in the same place. Treadmills were introduced before the development of powered machines to harness the power of animals or humans to do work, often a type of mill operated by a person or animal treading the steps of a treadwheel to grind grain. In later times, treadmills were used as punishment devices for people sentenced to hard labour in prisons. The terms ''treadmill'' and ''treadwheel'' were used interchangeably for the power and punishment mechanisms. More recently, treadmills have instead been used as exercise machines for running or walking in one place. Rather than the user powering a mill, the device provides a moving platform with a wide conveyor belt driven by an electric motor or a flywheel. The belt moves to the rear, requiring the user to walk or run at a speed matching the belt. The rate at which the belt moves is the rate of walking or running. Thus, the speed of running may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brixton (HM Prison)
HM Prison Brixton is a Category C training establishment men's prison, located in Brixton area of the London Borough of Lambeth, in inner- South London. The prison is operated by His Majesty's Prison Service. Before 2012, it was used as a local prison. History The prison was originally built in 1820 and opened as the Surrey House of Correction, Brixton Prison was intended to house 175 prisoners. However, regularly exceeding its capacity supporting over 200 prisoners, overcrowding was an early problem and with its small cells and poor living conditions contributed to its reputation as one of the worst prisons in London (worsened when Brixton became one of the first prisons to introduce penal treadmills in 1821). There is an illustration of prisoners on the 1821 treadmill used to mill corn in Surrey House of Correction. Conditions for women were especially harsh as newly arrived female inmates were made to spend four months in solitary confinement and, following their introdu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hard Labour
Penal labour is a term for various kinds of forced labour that prisoners are required to perform, typically manual labour. The work may be light or hard, depending on the context. Forms of sentence involving penal labour have included involuntary servitude, penal servitude, and imprisonment with hard labour. The term may refer to several related scenarios: labour as a form of punishment, the prison system used as a means to secure labour, and labour as providing occupation for convicts. These scenarios can be applied to those imprisoned for political, religious, war, or other reasons as well as to criminal convicts. Large-scale implementations of penal labour include labour camps, prison farms, penal colonies, penal military units, penal transportation, or aboard prison ships. Punitive versus productive labour Punitive labour, also known as convict labour, prison labour, or hard labour, is a form of forced labour used in both the past and the present as an additional f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penal Labour
Penal labour is a term for various kinds of forced labour that prisoners are required to perform, typically manual labour. The work may be light or hard, depending on the context. Forms of sentence involving penal labour have included involuntary servitude, penal servitude, and imprisonment with hard labour. The term may refer to several related scenarios: labour as a form of punishment, the prison system used as a means to secure labour, and labour as providing occupation for convicts. These scenarios can be applied to those imprisoned for political, religious, war, or other reasons as well as to criminal convicts. Large-scale implementations of penal labour include labour camps, prison farms, penal colonies, penal military units, penal transportation, or aboard prison ships. Punitive versus productive labour Punitive labour, also known as convict labour, prison labour, or hard labour, is a form of forced labour used in both the past and the present as an additiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exercise Machine
An exercise machine is any machine used for physical exercise. These range from simple spring-like devices to computerized electromechanical devices to recirculating-stream swimming pools. Most exercise machines incorporate an ergometer. An ergometer is an apparatus for measuring the work a person exerts while exercising as used in training or cardiac stress tests or other medical tests. Resistance machines Weight machines Weight machines use gravity as the primary source of resistance, and a combination of simple machines to convey that resistance, to the person using the machine. Each of the simple machines (pulley, lever, wheel, incline) changes the mechanical advantage of the overall machine relative to the weight. Other kinds of resistance machines * Friction machines * Spring-loaded machines (such as Bowflex) * Fan-loaded machines * Fluid-loaded machines * Bullworker * Hydraulic equipment * Whole body vibration * Outdoor gym * Pneumatic exercise equipment * Treadmil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Treadwheel Crane
A treadwheel crane () is a wooden, human powered hoisting and lowering device. It was primarily used during the Roman period and the Middle Ages in the building of castles and cathedrals. The often heavy charge is lifted as the individual inside the treadwheel crane walks. History Ancient Rome The Roman ''polyspaston'' crane, from Ancient Greek πολύσπαστον (polúspaston, “compound pulley”), when worked by four men at both sides of the winch, could lift 3000 kg. In case the winch has been replaced by a treadwheel, the maximum load even doubled to 6000 kg at only half the crew, since the treadwheel possesses a much bigger mechanical advantage due to its larger diameter. This meant that, in comparison to the construction of the ancient Egyptian pyramids, where about 50 men were needed to move a 2.5 ton stone block up the ramp (50 kg per person), the lifting capability of the Roman ''Polyspaston'' proved to be ''60 times'' more efficient (3000 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hamster Wheel
A hamster wheel or running wheel is an exercise device used primarily by hamsters and other rodents, but also by other Cursorial, cursorial animals when given the opportunity. Most of these devices consist of a runged or ridged wheel held on a stand by a single or pair of stub axles. Hamster wheels allow rodents to run even when their space is confined. The earliest dated use of the term "hamster wheel", located by the Oxford English Dictionary, is in a 1949 newspaper advertisement. Squirrel cages featured in an 1885 catalog by Osborn Manufacturing Co''.'' came with running wheels for the squirrels, similar to hamster wheels. Preferences Preference test, Choice tests with Syrian hamsters (''Mesocricetus auratus'') have shown that they prefer larger wheels; the animals chose a wheel diameter of over , which itself was preferred over . Hamsters showed no preference between a relatively uniform running surface made of plastic mesh and a surface made of rungs spaced 9 mm apar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clifton, New Jersey
Clifton is a city in Passaic County, in the U.S. state of New Jersey. Criss-crossed by several major highways, the city is a regional commercial hub for North Jersey and is a bedroom suburb of New York City in the New York Metropolitan Area.Levin, Jay"Living in Clifton, N.J.: Where a Lot of Little Worlds Commingle", ''The New York Times'', March 14, 2018. Accessed May 24, 2023. "There are multiple ways to commute to their jobs in Manhattan, some 15 miles away.... Buses provide Clifton transit commuters the most direct way to Manhattan: From Route 3, it is a straight shot to the Lincoln Tunnel." As of the 2020 United States Census, the city retained its position as the state's 11th-most-populous municipality, just behind tenth-ranked Trenton, and well ahead of Cherry Hill in twelfth place, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Staub
William Edward Staub (November 3, 1915 – July 19, 2012) was an American mechanical engineer who invented and developed the first consumer treadmill for home use, the PaceMaster 600, during the late 1960s. Dr. Kenneth H. Cooper, who helped to popularize Staub's invention, has described Staub as "a pioneer in exercise — not for the athlete, but for the masses." Life Staub was born in Philadelphia, Pennsylvania, on November 3, 1915. He lived in Clifton, New Jersey, for most of his life, residing in the town for more than seventy years. He originally moved to New Jersey to work as an engineer for the propeller division of Curtiss-Wright, an aircraft manufacturer, during World War II. He later founded the Besco Corp., an aerospace components producer headquartered in Clifton, New Jersey. The name "Besco" stood for the "Bill Edward Staub Corporation." Staub developed the first consumer treadmill after reading the 1968 book, ''Aerobics'', by Dr. Kenneth H. Cooper. Cooper's book not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Motor
An electric motor is a machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a electromagnetic coil, wire winding to generate Laplace force in the form of torque applied on the motor's shaft. An electric generator is mechanically identical to an electric motor, but operates in reverse, converting mechanical energy into electrical energy. Electric motors can be powered by direct current (DC) sources, such as from batteries or rectifiers, or by alternating current (AC) sources, such as a power grid, Inverter (electrical), inverters or electrical generators. Electric motors may also be classified by considerations such as power source type, construction, application and type of motion output. They can be brushed motor, brushed or brushless motor, brushless, single-phase electric power, single-phase, two-phase electric power, two-phase, or three-phase electric p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conveyor Belt
A conveyor belt is the carrying medium of a belt conveyor system (often shortened to a belt conveyor). A belt conveyor system consists of two or more pulleys (sometimes referred to as drums), with a closed loop of carrying medium—the conveyor belt—that rotates about them. One or both of the pulleys are powered, moving the belt and the material on the belt forward. The powered pulley is called the drive pulley, while the unpowered pulley is called the idler pulley. There are two main industrial classes of belt conveyors; Those in general material handling such as those moving boxes along inside a factory and bulk material handling such as those used to transport large volumes of resources and agricultural materials, such as grain, salt, coal, ore, sand, overburden and more. Overview Conveyors are durable and reliable components used in automated distribution and warehousing, as well as manufacturing and production facilities. In combination with computer-controlled pallet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cruelty
Cruelty is the intentional infliction of suffering or the inaction towards another's suffering when a clear remedy is readily available. Sadism can also be related to this form of action or concept. Cruel ways of inflicting suffering may involve violence, but affirmative violence is not necessary for an act to be cruel. Etymology The term comes from Middle English, via the Old French term "crualte", which is based on Latin "crudelitas", from "crudelis". The word has metaphorical uses, for example, " The cliffs remained cruel." (i.e., unclimbable when they desperately needed to be climbed) in ''The Lord of the Rings''. Usage in law The term ''cruelty'' is often used in law and criminology with regard to the treatment of animals, children, spouses, and prisoners. When cruelty to animals is discussed, it often refers to ''unnecessary suffering.'' In criminal law, it refers to punishment, torture, victimization, draconian measures, and cruel and unusual punishment. In divorce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
