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A brush is a tool with "bristles, wire or other filaments, used for "cleaning, "grooming "hair, "make up, "painting, surface finishing and for many other purposes. It is one of the most basic and versatile tools known to mankind, and the average household may contain several dozen varieties. It generally consists of a handle or block to which filaments are affixed either parallel- or perpendicular-wise, depending on the way the brush is to be gripped during use. The material of both the block and bristles or filaments is chosen to withstand hazards of its application, such as corrosive chemicals, heat or abrasion.
A common way of setting the bristles, brush filaments, in the brush is the staple or anchor set brush in which the filament is forced with a staple by the middle into a hole with a special driver and held there by the pressure against all of the walls of the hole and the portions of the staple nailed to the bottom of the hole. The staple can be replaced with a kind of anchor, which is a piece of rectangular profile wire that is anchored to the wall of the hole, like in most toothbrushes. Another way to attach the bristles to the surface can be found in the fused brush, in which instead of being inserted into a hole, a plastic fibre is welded to another plastic surface, giving the option to use different diameters of bristles in the same brush.
Configurations include twisted-in wire (e.g. bottle brushes), cylinders and disks (with bristles spread in one face or radially).
The action of these brushes is mainly in the tip of each flexible bristle which dislodges particles of matter.
The action of such brushes is mostly from the sides, not the tip, contact with which releases material held by "capillary action.
The action of these brushes is more akin to "combing than brushing, that is they are used to straighten and untangle filaments. Certain varieties of hairbrush are however designed to brush the scalp itself free of material such as dead skin ("dandruff) and to invigorate the skin of the scalp.
Brushes used for cleaning come in various sizes. They vary in size ranging from that of a toothbrush, to the standard household version accompanied by a dustpan, to 36" deck brushes. There are brushes for cleaning tiny cracks and crevices and brushes for cleaning enormous warehouse floors. Brushes perform a multitude of cleaning tasks. For example, brushes lightly dust the tiniest figurine, they help scrub stains out of clothing and shoes, they remove grime from tires, and they remove the dirt and debris found on floors with the help of a dust pan. Specific brushes are used for diverse activities from cleaning vegetables, as a "toilet brush, washing glass, cleaning tiles, and as a mild abrasive for "sanding.
|"Wikisource has the text of the "1911 Encyclopædia Britannica article Brush.|
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