A bush is a mechanical fixing between two, possible moving, parts, or a strengthened fixing point where one mechanical assembly is attached to another.
In a car or other vehicle's suspension, bushes are used to connect the various moving arms and pivot points to the chassis and other parts of the suspension. In order to minimise vibration, wear and transmission of noise, they often incorporate flexible material such as rubber or polyurethane. These bushes often take the form of an annular cylinder of flexible material inside a metallic casing or outer tube. They might also feature an internal crush tube which protects the bush from being crushed by the fixings which hold it on to a threaded spigot. Many different types of bush designs exist [1]. Suspension may refer to: suspension (chemistry) suspension bridge suspension (music) suspension (vehicle) (system of shock absorbers and supports that connect a vehicle to its wheels) suspension (civil engineering) (system that connects a structure to its foundation, for example in earthquake protection) suspension (topology) suspension (body modification) suspension bondage suspension (figure... A chassis (plural: chassis) consists of a framework which supports an inanimate object, analogous to an animals skeleton; for example in the construction of an automobile or of a firearm. ... Rubber is an elastic hydrocarbon polymer which occurs as a milky emulsion (known as latex) in the sap of a number of plants but can also be produced synthetically. ... A polyurethane is any polymer consisting of a chain of organic units joined by urethane links. ...
Another type of bush is a hardened threaded fixing hole which allows one assembly to be fixed to another by means of a screw or threaded bolt. The use of a bush can make assembly easier because it avoids the need for a separate nut and washer on the other side of the fixed material. Bushes can be fitted into sheet material by riveting - often the rivet itself incorporates the bush. Look up Thread on Wiktionary, the free dictionary The word thread has many meanings: A thread is a kind of thin yarn, which is thin fibers spun together. ... Screws come in a variety of shapes and sizes for different purposes. ... A bolt may be one of the following things: A type of threaded fastener. ... Look up Nut on Wiktionary, the free dictionary A nut is a type of fruit borne by certain flowering plants. ... the term washer may refer to one of the following. ... A rivetted buffer beam on a steam locomotive A rivet is a mechanical fastener consisting of a smooth cylindrical shaft with heads on either end, the second one formed in position. ...
The Albany Pine Bush Preserve Commission was created by the NYS Legislature in 1988 to protect and manage the unique and endangered natural communities and species of the Albany Pine Bush for ecological, recreational and educational benefits.
Mechanical Treatments--Since 1995 the Albany Pine Bush Preserve Commission, in cooperation with the US Fish and Wildlife Service, has used a machine called a hydro-axe (click here to see a photo) to mow dense scrub-oak thickets, primarily in the more open, barrens areas of the Preserve.
Mechanical management will probably be used on a limited basis for a number of years until a complete rotation of burning has occurred on these lands in the preserve.
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