A barber's pole is a type of sign used by barbers to signify the place or shop where they perform their craft. The trade sign is, by a tradition dating back to the Middle Ages, a staff or pole with a helix of colored stripes (usually red, white, and blue in the United States; often red and white in other countries). The pole may be stationary or may revolve, often with the aid of an electric motor.
A "barber's pole" with a helical stripe is a familiar sight, and is used as a secondary metaphor to describe objects in many other contexts. For example, if the shaft or tower of a lighthouse has been painted with a helical stripe as a daymark, the lighthouse could be described as having been painted in "barber's pole" colors.
Origin in barbering and surgery 
The origin of the red and white barber pole is associated with the service of bloodletting and was historically a representation of bloody bandages wrapped around a pole. During medieval times, barbers performed surgery on customers, as well as tooth extractions. The original pole had a brass wash basin at the top (representing the vessel in which leeches were kept) and bottom (representing the basin that received the blood). The pole itself represents the staff that the patient gripped during the procedure to encourage blood flow.
At the Council of Tours in 1163, the clergy was banned from the practice of surgery. From then, physicians were clearly separated from the surgeons and barbers. Later, the role of the barbers was defined by the College de Saint-Côme et Saint-Damien, established by Jean Pitard in Paris circa 1210, as academic surgeons of the long robe and barber surgeons of the short robe.
After the formation of the United Barber Surgeon's Company in England, a statute required the barber to use a blue and white pole and the surgeon to use a red pole. In France, surgeons used a red pole with a basin attached to identify their offices. Blue often appears on poles in the United States, possibly as a homage to its national colors. Another, more fanciful interpretation of these barber pole colors is that red represents arterial blood, blue is symbolic of venous blood, and white depicts the bandage.
Prior to 1950, there were four manufacturers of barber poles in the United States. In 1950, William Marvy of St. Paul, Minnesota, started manufacturing barber poles. Marvy made his 50,000th barber pole in 1967, and, by 2010, over 82,000 had been produced. The William Marvy Company is now the sole manufacturer of barber poles in North America, and sells only 500 per year (compared to 5,100 in the 1960s). In recent years, the sale of spinning barber poles has dropped considerably, since few barber shops are opening, and many jurisdictions prohibit moving signs. Koken of St. Louis, Missouri, manufactured barber equipment such as chairs and assorted poles in the 19th century.
As early as 1905, use of the poles was reported to be "diminishing" in the United States.
Barber pole use in barbering 
The red and white pole outside barber shops references a time when barbers were expected to perform bloodletting and other medical procedures to heal the sick; red represented blood and white represented bandages. "Barber surgeons" in Rome also performed teeth extraction, cupping, leeching, bloodletting, surgery and enemas. However, today's barber poles represent little more than being a barber shop that cuts hair and does shaves. Barber poles have actually become a topic of controversy in the hairstyling business. In some states, such as Michigan in March 2012, legislation has emerged proposing that barber poles should only be permitted outside barbershops, but not traditional beauty salons. Barbers and cosmetologists have engaged in several legal battles claiming the right to use the barber pole symbol to indicate to potential customers that the business offers haircutting services. Barbers claim that they are entitled to exclusive rights to use the barber pole because of the tradition tied to the craft, whereas cosmetologists argue that they are equally capable of cutting men's hair too (though many cosmetologists are not permitted to use razors, depending on their state's laws).
Barber pole use in prostitution 
In some parts of Asia, a red, white and blue barber pole is used as a symbol for a brothel. While prostitution is illegal in many parts of Asia, laws against it are often only enforced to the degree that all public solicitations for it are eliminated. The barber's pole is used as a euphemistic way of advertising a brothel, thus reducing the likelihood of police intervention.
In South Korea, barber's poles are used both for actual barbershops and for brothels. Brothels disguised as barbershops, referred to as 이발소 (ilbalso) or 미용실 (miyongsil), are more likely to use two poles next to each other, often spinning in opposite directions, though the use of a single pole for the same reason is also quite common. Actual barbershops, or 미용실 (miyongsil), are more likely to be hair salons; to avoid confusion, they will usually use a pole that shows a picture of a woman with flowing hair on it with the words hair salon written on the pole.
Visual illusion 
Other uses of the term 
Animal husbandry 
Haemonchus contortus, or "barber's pole worm", is the parasitic nematode responsible for anemia, bottle jaw, and death of infected sheep and goats, mainly during summer months in warm, humid climates. Humans may become infected by the worms.
Aviation and space flight 
The term on the barber pole is pilot jargon that refers to flying an aircraft at the maximum safe velocity. The airspeed Indicator on aircraft capable of flying at altitude features a red/white striped needle resembling a barber pole. This needle displays the VMO (Maximum Operating Velocity) or—at altitude—the MMO (Mach Limit Maximum Operating Speed) of the aircraft. This needle also indicates the maximum operating Mach number above the VMO/MMO changeover level. As the aircraft increases in altitude and the air decreases in density and temperature, the speed of sound also decreases. Close to the speed of sound, an aircraft becomes susceptible to buffeting caused by shock waves produced by flying at transonic speeds. Thus, as the speed of sound decreases, so the maximum safe operating speed of the aircraft is reduced. The "barber pole" needle moves to indicate this speed. Flying "on the barber pole" therefore means to be flying the aircraft as fast as is safe to do so in the current conditions.
Barberpole is a phrase used to describe the striped output of indicators used during the Apollo and Shuttle programs. Typically the indicator would show all grey or a grey and white striped pattern, known as barberpole, to allow the astronauts a quick visual reference of the status of the spacecraft systems. Various indicators in the Apollo Command Modules indicated barberpole when the corresponding system was inactive. Astronaut Jim Lovell can also be found describing system indications as "barber poled" in the transcript of radio transmissions  during the Apollo 13 accident.
During World War I and World War II, the pattern has also been used as an insignia for aircraft identification. Spad XIIIs of the 94th Aero Squadron USAS in early 1919 used variations on barber pole patterns including: 'Barber Pole' of Lt Dudley 'Red' Outcault; S.16546 'Flag Bus' of Captain Reed Chambers; and 'Rising Sun' of Lt John Jeffers.
Red or rubric posts were sometimes used by booksellers in England prior to 1800. William Roberts reports in The Book Hunter in London that certain 18th-century bookshops in the Little Britain district of London sported such poles:
A few years before Nichols published [in 1816] his Literary Anecdotes, two booksellers used to sport their rubric posts close to each other here in Little Britain, and these rubric posts were once as much the type of a bookseller's shop as the pole is of a barber's ... Sewell, Cornhill, and Kecket and De Hondt, Strand, were among the last to use these curious trade signs.
Border and lane markers 
- Among the Fortifications of the inner German border, 2622 barber pole-styled markers were placed about 500 feet (150 m) apart to demarcate the no-man's land between East Germany and West Germany.
- The 41 Combat Engineer Regiment, a part of the Canadian Military Engineers, produced and delivered over 16,000 distinctive barber pole lane markers during World War II.
The famous Barber Pole Group was originally a group of 120 Flower-class corvettes built in Canada during World War II, and charged primarily with protecting freighter convoys. The original group was Escort Group C-3. This group of ships, with its red and white barber pole stripes painted on the funnel, is still represented in the current Canadian navy: all Atlantic fleet ships wear this insignia. HMCS Sackville is the last remaining Flower-class corvette.
The old-fashioned American stick candy is sometimes also referred to as "barber pole candy" due to its colorful, swirled appearance. See also, Candy cane. "Candy stripe" is a generic description of the candy cane color scheme. Among many other names, the candy has been called Polkagris.
Cellular biology 
Barber pole-like structures have been observed at the cellular level. The effects, origins and causes are controversial, and are subject to intense research.
Computer science 
In UI design, a barber pole-like pattern is used in progress bars when the wait time is indefinite. It is intended to be used like a throbber to tell the user that processing is continuing, although it is not known when the processing will complete.
Barber pole is also sometimes used to describe a text pattern where a line of text is rolled left or right one character on the line below. The CHARGEN service generates a form of this pattern. It is used to test RAM, hard disks and printers. A similar pattern is also used in secure erasure of media. This may be pictured as:
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgh "#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghi #$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghij $%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijk %&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijkl &'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklm
- A barber pole motif has been used as a daymark and navigational aid for lighthouses. The White Shoal Light is the only "barber pole" lighthouse in the United States, and has been used in Michigan's "Save our Lights" license plate. However, black and white helical daymarks do appear on other lights, such as Cape Hatteras Light and St. Augustine Light.
- Barber pole channel markers are sometimes used as they are in the Tamaki River.
Dinosaurs with feathers 
Sinosauropteryx (meaning "Chinese reptilian wing", in Chinese 中华龙鸟: zhonghua longniao) is the first genus of non-avian dinosaur found with the fossilized impressions of feathers, as well as the first non-avian dinosaur where coloration has been determined. It lived in China during the early Cretaceous period and was a close relative of Compsognathus. It was the first non-avialan dinosaur genus discovered from the famous Jehol Biota of Liaoning Province. Zhang found "that the filaments running down its back and tail made have made the dinosaur look like an orange-and-white-striped barber pole. Such a vibrant pattern suggest that 'feathers first arose as agents for color display,' Benton says."
The strength and direction of magnetic fields and electric currents can be measured using a "magnetoresistive barber-pole sensor" (also called a "hermetic proximity sensor"), and its performance can be depicted using a mathematical formula. Such a sensor interleaves a series of permanent magnet strips with a series of magnetoresistive strips. The "conductive barberpole strips are canted across the sensor and connect one magnetoresistive strip, over a permanent magnet strip, to another magnetoresistive strip." This is said to provide a "uniform magnetic field throughout the sensor" thereby enhancing its resistance to external magnetic fields. The technology is used in wireless sensor networks which "have gathered a lot of attention as an important research domain" and were "deployed in many applications, e.g., navigation, military, ambient intelligence, medical, and industrial tasks. Context-based processing and services, in particular location-context, are of key interest ..." (See Music (acoustic illusion), infra.)
Allotropa virgata is in the family Ericaceae (Heath Family) and is the only species of the genus Allotropa. It is a perennial plant that gets its common names from the erect peduncle marked by distinct white and red or maroon stripes. Lacking chlorophyll, they are not green, and obtain nutrients from neighboring green plants through a fungal intermediate. It feeds exclusively on Matsutake mushroom mycelium. Common names include Sugarstick, Sugar-stick, Candystriped allotropa and Barber's Pole.
Used in flyfishing, Au Sable River guide Earl Madsen's "Madsen's Barber pole" is a traditional Michigan fly in the form of a "Stonefly" imitation "with grizzly hackle tip wings tied in a downwing fashion." Photo of Madsen's Barber Pole Fly, parachute form.
The phrase barber pole is derisive jargon in craps, and refers to the commingling of "gaming cheques of different denominations." Wagers that combine different denominations are "supposed to be stacked with the highest denomination at the bottom."
- In the 1896–97 season, the Ottawa Senators (original) first adopted the "barber pole" design for their hockey jersey, with which the team became identified. The design featured strong horizontal stripes of red, black and white; white pants; and red, white and black striped stockings. Except for the 1909–10 season, this basic design would be used for the rest of the organization's existence, except for one season, 1909–10. In that season, the stripes were vertical and Montreal fans nicknamed the team derisively as les suisses, a slang term for chipmunk. In the 1929–30 season, the club added the "O" logo to the chest of the jersey. The "barber-pole" uniform was later adopted by the Ottawa 67's junior hockey team.
- The National Hockey League's Montreal Canadiens had a barber pole or "barber shop" design jersey for the year 1912–1913.
- In the 1920s and 1930s, beginning in the 1927–28 season, the Senators, Boston Bruins, Montreal Maroons, Chicago Blackhawks, Detroit Cougars, and Toronto Maple Leafs had a barber's pole variation in their jerseys. Meanwhile, the New York Americans, wore "basically ... the United States flag as a jersey." The style endured, but in the 1938–39 season, the Blackhawks were the last to have a barber pole jersey in the traditional sense. The Hawks retired their barber pole at the end of the 1954–55 season.
- In junior ranks, the Chicoutimi Saguenéens and the Ottawa 67's use them in the Quebec Major Junior Hockey League (QMJHL). See also Seattle Metropolitans.
- The style remained dormant until the National Hockey League 75th anniversary. Internet Radio commentator Scotty Wazz described them as "more traditional than tacky" when they were temporarily revived. See NHL uniform and Throwback uniform.
Matthew Walker's knot is a decorative knot used to keep the end of a rope from fraying and said to resemble a barber's pole. Though highly decorative, and historically one of the most common knots, on a modern yacht it is almost unused and unknown.
The "Barberpole Cat" group is an essential repertoire of 12 songs that every barber shop quartet should know. The Barberpole Cat Program was created many years ago and features popular Barbershop songs arranged and voiced so all singers can learn and participate. For decades these have been the standard arrangements where singers can meet at conventions and sing together having never met before.
The songs in this collection are:
- My Wild Irish Rose;
- Wait 'Till the Sun Shines, Nellie
- Sweet and Lovely (That's What You are to Me)
- Down Our Way
- Honey-Little 'Lize Medley
- Let Me Call You Sweetheart
- Sweet, Sweet Roses of Morn
- Shine on Me
- The Story of the Rose (Heart of My Heart)
- You're the Flower of My Heart, Sweet Adeline
- Down by the Old Mill Stream
- You Tell Me Your Dream
- Tags: Give Me Your Hand; Ring, Ring The Banjo.
Music (acoustic illusion) 
- The Shepard tone has been described as "a sonic barber pole" and an auditory illusion.
- "Barberpole Flanger" are algorithms that offers simple Barberpole Flanging implementation, and is known also as "infinite flanging". Similar to the Shepard tone effect, the sweep of the "flanged sound seems to move in only one direction ("up" or "down") infinitely, instead of sweeping back-and-forth."
- "Barber-pole phaser". Roger Shepard's original work used a computer program written by Max Mathews. However the same type of effect can be accomplished using an analog synthesizer controlled by a gadget which may be called a "Shepard Function Generator". Harald Bode (inventor of the vocorder) invented an off-the-rack device called a "barber-pole phaser" which was marketed in the 1980s.
- The Screaming Eagles 101st Airborne Division (Air Assault) Command Parachute Demonstration Team, which operates out of Fort Campbell, Kentucky, executes a "barber pole maneuver" (also known as "the Baton Pass") during demonstrations. Two jumpers leave the aircraft and fly their bodies together to link while in free fall. "Once together they will then exchange a wooden baton ... [and] maneuver their bodies ... to create the illusion of a giant barber pole in the sky."
- Alternatively, a "Four Man Star" can "Hook Up" and then the formation rotates to the right, creating a "Barber Pole" effect with use of trailing smoke.
- Another parachuting use of the term describes having a mess of lines tangled "behind your head and you have to cut away your main chute and pull your reserve."
- According to the National Oceanic and Atmospheric Administration, barber pole is a slang term used by weather and storm spotters to describe "a thunderstorm updraft with a visual appearance including cloud striations that are curved in a manner similar to the stripes of a barber pole. The structure typically is most pronounced on the leading edge of the updraft, while drier air from the rear flank downdraft often erodes the clouds on the trailing side of the updraft." See Supercell. Supercell/barber's pole photograph.
- A lynchpin of the NOAA National Hurricane Research Laboratory's hurricane-research fleet is the Lockheed WP-3D Orion (P-3). It has two barber-pole samplers (named for their red-and-white stripes) which protrude from the aircraft's front, a tail Doppler weather radar, and other unique-looking instruments hanging from the wing.
- "Barbasol Co. v. Jacobs. No. 8969". 7th Circuit Court of Appeals, 160 F.2d 336. 1947 full text. Retrieved 15 December 2010. "As the court noted: 'Plaintiff's shaving cream product is identified by the word trade mark "Barbasol" and by the distinctive package design trade mark hereinafter referred to. Said product is displayed and offered for sale in two types of cartons. One of said cartons is of rectangular shape, the length of which is about 3½ times its width and the depth is a little less than the width. In addition to the word "Barbasol" being provided thereon, the carton has a striped border of blue, white and red diagonal stripes surrounding a rectangular panel or field in blue color. The shaving cream disposed in this type of carton is packed in an elongated soft metal tube, which is received and housed within said carton. The other type of carton is approximately square and it also has the word trade mark "Barbasol" provided thereon, and the entire carton is provided with diagonal colored stripes of red, white and blue, said stripes forming a border for a blue field, on which appears the word "Barbasol" and other printed matter. The shaving cream is disposed in a glass jar of octangular cross section and upon which the word "Barbasol" appears. The jar is white and is disposed within the square carton.'"
- "Barber Pole". Webster's New World College Dictionary. Cleveland: Wiley Publishing. 2010. Retrieved 14 November 2010.
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- History of the Barber – Barber-Schools.org
- Banning Barber Poles at Michigan Salons
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- "Barber's Pole Worm (Haemonchus contortus)". Sydney: Australian Wool Innovation. 2010. Retrieved 14 November 2010.
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- US patent 5737156, Bonyhard, Peter I., "Barberpole MR sensor having interleaved permanent magnet and magnetoresistive segments", published 1998-04-07, assigned to Seagate Technology, Inc.
- Carrella, Stefano; Iswandy, Kuncup, Lutz, Kai; King, Andreas (18–19 May 2010). "3D-Localization of Low-Power Wireless Sensor Nodes Based on AMR-Sensors in Industrial and AmI Applications" (CD-ROM). Sensoren und Messsysteme 2010. Vorträge der 15. ITG/GMA-Fachtagung. Nuremburg: Berlin Offenbach. ISBN 978-3-8007-3260-9. http://www.vde-verlag.de/proceedings-en/453260093.html. Retrieved 14 November 2010.
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- Kitchen(2008), p. 303
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Further reading 
- Andrews, William (1904). 118 At the Sign of the Barber's Pole: Studies in Hirsute History. Cottingham, Yorkshire: J.R. Tutin. pp. 1–8.
- John H. Lienhard (2001). "The Sign of the Barber Pole". The Engines of Our Ingenuity. Episode 1635. University of Houston School of Engineering. NPR. KUHF-FM. and audio.
- "Blood, Bandages and Barber Poles". The Guide to Life, The Universe and Everything. BBC. 29 November 2002. Archived from the original on 8 January 2006. Retrieved 27 December 2005.
- Roberts, William (1895). The Book Hunter in London. London: Eliot Stock. p. 176. ISBN 978-1-112-48298-4. at Google books and at Project Gutenberg.
|Wikimedia Commons has media related to: Barbers poles|
- An Animated Ad Pillar In Red And Blue: The Barber's Pole (21 March 2008) at Pingmag.
- Barber Poles at National Library Board, Singapore.
- Sullivan, Pat. Adventures of Felix the Cat – Felix Pinches the Pole video newsreel film – Felix the Cat steals a barber's pole. British Pathé. Issue Date: 31 July 1924 Canister: EP 058 Film ID: 854.04 Sort number: EP 058 Tape: *PM0854* Access date 21 November 2010.
- Timeline of Barber Poles.
- Barber-Schools.org – Barber Industry, Careers, Education & Licensing Information