ferrule

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ferrule

, ferule
1. a metal ring, tube, or cap placed over the end of a stick, handle, or post for added strength or stability or to increase wear
2. a side opening in a pipe that gives access for inspection or cleaning
3. a bush, gland, small length of tube, etc., esp one used for making a joint

Ferrule

A metal cap placed at the end of a post for strength and protection against weathering of the end grain.

ferrule

[′fer·əl]
(design engineering)
A metal ring or cap attached to the end of a tool handle, post, or other device to strengthen and protect it.
A bushing inserted in the end of a boiler flue to spread and tighten it.
(engineering)

ferrule

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.

ferrule

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
With the naked eye, one cannot see the tiny opening for the optical fiber. It is only visible under a magnifying glass. The epoxy or adhesive is squeezed into the ferrule before the fiber is inserted (bottom right).
References in periodicals archive ?
These small surface ruptures are akin to the occasional lines that appear to be scratched into the surface with the pointed end of a brush (or any styluslike implement that may come to hand); or the lines caused by a grain of congealed paint dragged, as it were, through the ointment; or the lines that result from the shifts in pressure when the painter, using a spatula-like instrument, trowels the pigment about during the ferule's swipe.
(Thrasher).--This gentleman is famous for his tail, which he uses for a ferule in thrashing his foes.
A Theorem," an article succeeding Russell's on the Absolute in the June 1871 issue, Ruskin speculated that if he prodded his umbrella ferule into a cuttlefish, the creature would respond as to any enemy it knew in its aquatic universe, by defensive and offensive measures concomitant with its species.
38v) -, c'est-a-dire de la chretiente grecque, Hermann le Slave ou le Dalmate aurait d'abord etudie sous la ferule de Thierry de Chartres ([dagger] ap.
(12) This punishment involved beating a slave's hand with a wooden object called ferule.
The critical connectivity issues include the alignment and precision issues outlined in Type One (for MT ferule style connectivity).
Cailleux R, Joly P (1987) Etude de quelques stations italiennes du Pleurote de la ferule. Bull.
the "ferule," a band of metal at the pen's lower end,
The report shows how the couple tell the original "story of Ferule" in a way that encompasses tragic events (major fires and mine disasters) of the early 20th century.
European antelope curved natural horn handles are attractive, but some of these sticks have the bottom six inches of the antelope's leg and hoof at the ferule end of the walking stick and these days this may be considered unacceptable.
Pourtant, dans le Nord passe sous la ferule des chefs noirs Louverture, Dessalines et Christophe, il se produit une equivalence entre << cultivateur >> et << africain >>.
On devine en effet derriere cette docilite provoquee par la commemoration de l'ecrivain romantique, l'attitude d'un eleve mis dans l'obligation de se plier sous la ferule du maitre.