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ferrule

Did you mean: ferrule, stabilizer

 
Dictionary: fer·rule   (fĕr'əl) pronunciation
 
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ferrule
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ferrule
top: household paintbrush
center: round paintbrush
bottom: cosmetic brush
(Academy Artworks)
n.
  1. A metal ring or cap placed around a pole or shaft for reinforcement or to prevent splitting.
  2. A bushing used to secure a pipe joint.

[Alteration (influenced by Latin ferrum, iron), of Middle English verrele, from Old French virole, from Latin viriola, little bracelet, diminutive of viriae, bracelets.]

ferrule fer'rule v.
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Computer Desktop Encyclopedia: ferrule
 
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A ceramic, plastic or stainless steel part of a fiber-optic plug that holds the end of the fiber and precisely aligns it to the socket. The fiber is inserted into the ferrule and cemented with an epoxy or adhesive, which gives it long-term mechanical strength and prevents contamination from the weather. Connectors may also use crimped ferrules that do not require cement. The ferrule is the most important and costly part of a fiber connector. If its length, hole centering and inside and outside diameters are not exact, a poor connection will result. See fiber optics glossary.

Fiber-Optic Ferrule
At a quick glance, you won't see the opening for the optical fiber, because it's so tiny. But if you look at the end of the ferrule assembly under a magnifying glass, you will see it. The epoxy or adhesive is squeezed into the ferrule before the fiber is inserted (bottom right).

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Architecture: ferrule
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A metal sleeve, esp. one which is fitted with a screwed plug; serves as an opening on the side of a pipe providing access for inspection or cleaning the interior of the pipe.

 
Obscure Words: ferrule
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a band placed around the end of a stick (as a pool cue) for reinforcement
 
Word Tutor: ferrule
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pronunciation

IN BRIEF: n. - A metal cap or band placed on a wooden pole to prevent splitting.

Tutor's tip: Wild, undomesticated animals are called "feral". A "ferrule" is a metal ring put at the end of a cane, and a "ferule" is a flat stick used to punish children.

 
Wikipedia: Ferrule
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For the plant of similar name, see Ferula.
Sister project Look up ferrule in Wiktionary, the free dictionary.
RHOL wire rope terminated with thimble and ferrule
Picco pipe with nickel silver ferrule

A ferrule (a corruption of Latin viriola "small bracelet," under the influence of ferrum "iron.") is a name for types of metal objects, generally used for fastening, joining, or reinforcement. They are often narrow circular rings of metal, or less commonly, plastic.

Most ferrules consist of a circular clamp used to hold together and attach fibers, wires or posts, generally by crimping, swaging, or otherwise deforming the ferrule to permanently tighten it onto the parts that it holds.

Examples of such ferrules:

  • On a two-piece kayak paddle, the part that connects the two ends together.
  • In a brush the ferrule binds the bristles or hair to the handle.
  • On an ice axe, the metal spike at the end of the shaft
  • The metal ring which is crimped to hold the eraser in place on pencils with an attached eraser
  • The metal ring which holds a chisel blade's tang to the handle
  • In fiber optic terminations, glass or plastic fibers are bonded to precision ferrules and polished for splitting or connecting two fibers together[1]
  • In restorative dentistry, margin of a cast crown that stabilizes root-canal treated teeth[2]
  • In golf, a plastic sleeve that adorns the bottom of most steel and graphite shafts just above the club head hosel. Originally designed to protect the shaft from damaging vibrations, it is now used mainly for aesthetic purposes
  • In musical instruments, a metal band used to prevent the ends of wooden instruments from splitting. Also the semi-circular metal band that holds the fibers in place on the frogs of bows for violin family instruments.
  • Compression fittings for attaching tubing (piping) commonly have ferrules in them.
  • A swaged termination type for wire rope
  • Cap at the end of a cane or umbrella.
  • In pool, billiards and snooker, the portion of a cue that tops the shaft and to which the tip is bonded; historically made of ivory, now typically made of fiberglass, phenolic resin or brass (or weak plastic, in cheaper models).
  • In fishing, the male and female joints that join one section of a rod to the next is known as the ferrule.
  • In bicycles, a metal cap at the end of cable housing with a hole for the cable

References

  1. ^ US patent 5016970, , "Ferrule for optical fiber transmitting linearly polarized light and optical fiber connector using this ferrule", granted 1991-05-21  
  2. ^ NIH search
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Did you mean: ferrule, stabilizer


 

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Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.  Read more
Computer Desktop Encyclopedia. THIS COPYRIGHTED DEFINITION IS FOR PERSONAL USE ONLY.
All other reproduction is strictly prohibited without permission from the publisher.
© 1981-2009 Computer Language Company Inc.  All rights reserved.  Read more
Architecture. McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
Obscure Words. © 2008 by Michael A. Fischer http://home.comcast.net/~wwftd.  Read more
Word Tutor. Copyright © 2004-present by eSpindle Learning, a 501(c) nonprofit organization. All rights reserved.
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Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Ferrule".  Read more

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