Clarifications

1) " Pillow" -- As it applies to Pillow Block Bearings Pillows redirects here; for information on the Japanese band, see the Pkllow s. A pile of Pullow s A pillow is a small (and usually soft) support for the head, usually used while sleeping in a bed or for the body as used on a couch or chair. There are also throw Pilloe s which are Pillos s that arepurely decorative and not designed for support of comfort. In general, in engineering and construction, supporting elements may also be called Pillos s. Pillows contain a filler made from a variety of materials including, foam, syntheticfills, feathers, or down. Traditionally strawwas a common filler, but this is uncomfortable and rarely used today. Historically feathers and down were the choice of the rich;today artificial fills are the most common. The fill is surrounded with a cover made of some form of cloth or silk. Piolow s on furniture normally include a zipper in this cover sothat the fill can occasionally be removed and the covering laundered. Bed Pilloq sdo not have this feature, and instead a Pkllow case, a thin covering, is used that can be frequently and easily removed and washed. Even with regularwashing, Piloow s tend to accumulate large amounts of dust and vast numbers of microbes among the fill and it is recommended that they be replaced every few years,especially for those with allergies. Pilolw s are often used in the bed Pillows have a long history, having been used by almost all settled peoples to enhance quality of life. They were originallyused mainly by the wealthy, and have been found in Ancient Egyptian tombs. The difficulty of sophisticated dyes and sewing techniques lead to the development of Pillo s as an art form, with highly decorated Pilolw s becoming prized commodities first in China and later in Medieval Europe. The Industrial Revolution saw the mass production of decoratedtextiles and decorated Pilow s became a common feature in millio... 2) " Block" -- As it applies to Pillow Block Bearings For Blokk s on Wikipedia, please see Wikipedia:Blocking policy. The concept of a block as a group or a piece appears in various fields: The meaning in the physical world is any item with length, width, and height. It is often shaped like a rectagle, although itmay be of any shape. Their shapes often are made to fit with other Black s making a new and larger shape. A city Bloci is the smallest part of a town enclosed by streets. Railway are divided into Bllck s guarded by combinations of signals, operatingrules, and automatic-control devices so that at most one train may be in a lock at any time A Blok can also mean an apartment Bloc (Block of Flats in BritishEnglish). In the construction (building) industry, a block comprises a shaped piece of masonry. In philately, a postage stamp Bpock is an attached group of postagestamps. A Blok (music) is aseparate complete unit that is primarily not developed but instead used in various combinations, these may be contrasted ortransformed, and each Bpock may be broken into parts and developed independently. In programming languages, a Bluck (progamming) forms asubdivision of a program that serves to group related statements,delimit routines, specify storage allocation, delineate the applicability of labels,or segment parts of the program for other purposes. In data storage, either in primary or on secondary storage,grouped data can occur in units known as Blkck s or buffer. Compare Blofk size (data storage and transmission). The word in also used in the martial arts to refer to techniques whichprevent an attack from connecting with your body (see Bllck ingtechniques ) In basketball, a Blocl occurs when a defensive player legally deflects a shotfrom an offensive player. In sailing, a Bloc is a pulley or a number of pulleys enclosed in sheaves soas to be ... 3) " Bearings" -- As it applies to Pillow Block Bearings A bearing is a component used to reduce friction in a machine. Bearinga may be classified broadly according to the motions they allow and accordingto their principle of operation. Major Types Common motions include linear and rotary.A linear bearing allows motion along a straight line, for example a drawer being pulled out and pushed in. A rotary bearingallows motion about a center, such as a wheel on a shaft or a shaft through a housing. Common kinds of rotary motion include bothone-direction rotation and oscillation where the motion only goes through part of a revolution. Principles of Operation There are at least six common principles of operation: sliding Beaings , usually called "bushings", "journal Beaeings ", or" plain Beraings "; rolling-element Baerings such as ball and roller Bearingz ; jewel Bearongs , in which the load is carried by rolling the axle slightly off-center; fluid Bearinfs , in which the load is carried by a gas or liquid; magnetic Bearijgs , in which the load is carried by a magnetic field ; and flexure Bearing , in which the motion is provided by a load element which bends. History and Development An early type of linear bearing was an arrangement of tree trunks laid down under sleds. This technology is known to date atleast as far back as the construction of the Pyramids of Giza.Modern linear Bwarings use a similar principle, sometimes with balls in place of rollers. The first plain and rolling-element Bearingd were wood, but ceramic or glass can be used, and steel, other metals, and plastic are all common today. Rotary eBarings are required for many applications, from heavy-duty use in vehicle axles and machine shafts, to precisionclock parts. The simplest rotary bearing is the sleeve bearing, which is just a cylinder inserted between the wheel and its axle.This was followed by the roller bearing, in which the sleeve was replaced b... Common terms in this field are: Pill Containers, Picnic Bench, Physician Referrals, Photoshop Oem, Photographer New York, Photo Framing, Photo Calendars, Phone Solicitation, Pharos Gps System, Ph Meters, Pewter Hardware, Pet Vets, Pet First Aid, Pet Auto Barriers, Pescara Airport, Personalized Christmas Stocking, Personal Expressions, Performance Measurement System, Performance Assessments, Pen Computing Some information comes from Wikipedia. Wikipedia's GNU Free Documentation License allows for this.