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shackle (n.)
1.a restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner)
2.a U-shaped bar; the open end can be passed through chain links and closed with a bar
shackle (v. trans.)
1.restrain with fetters
2.bind the arms of
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Merriam Webster
ShackleShac"kle (?), n. Stubble. [Prov. Eng.] Pegge.
ShackleShac"kle, n. [Generally used in the plural.] [OE. schakkyll, schakle, AS. scacul, sceacul, a shackle, fr. scacan to shake; cf. D. schakel a link of a chain, a mesh, Icel. skökull the pole of a cart. See Shake.]
1. Something which confines the legs or arms so as to prevent their free motion; specifically, a ring or band inclosing the ankle or wrist, and fastened to a similar shackle on the other leg or arm, or to something else, by a chain or a strap; a gyve; a fetter.
His shackles empty left; himself escaped clean. Spenser.
2. Hence, that which checks or prevents free action.
His very will seems to be in bonds and shackles. South.
3. A fetterlike band worn as an ornament.
Most of the men and women . . . had all earrings made of gold, and gold shackles about their legs and arms. Dampier.
4. A link or loop, as in a chain, fitted with a movable bolt, so that the parts can be separated, or the loop removed; a clevis.
5. A link for connecting railroad cars; -- called also drawlink, draglink, etc.
6. The hinged and curved bar of a padlock, by which it is hung to the staple. Knight.
Shackle joint (Anat.), a joint formed by a bony ring passing through a hole in a bone, as at the bases of spines in some fishes.
ShackleShac"kle (?), v. t. [imp. & p. p. Shackled (?); p. pr. & vb. n. Shackling.]
1. To tie or confine the limbs of, so as to prevent free motion; to bind with shackles; to fetter; to chain.
To lead him shackled, and exposed to scorn
Of gathering crowds, the Britons' boasted chief. J. Philips.
2. Figuratively: To bind or confine so as to prevent or embarrass action; to impede; to cumber.
Shackled by her devotion to the king, she seldom could pursue that object. Walpole.
3. To join by a link or chain, as railroad cars. [U. S.]
Shackle bar, the coupling between a locomotive and its tender. [U.S.] -- Shackle bolt, a shackle. Sir W. Scott.
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⇨ voir la définition de Wikipedia
⇨ Christopher Shackle • D-shackle • G. L. S. Shackle • G.L.S. Shackle • Shackle (disambiguation) • Thomas Shackle • USS Shackle (ARS-9)
shackle (n.)
shackle (v. tr.)
confine, hold, restrain[Hyper.]
fetter, hobble - bond, hamper, shackle, trammel[Dérivé]
shackle (v. tr.)
confine, hold, restrain[Hyper.]
Wikipedia
This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. Please improve this article by introducing more precise citations. (April 2010) |
A shackle, also known as a gyve, or shakle is a U-shaped piece of metal secured with a clevis pin or bolt across the opening, or a hinged metal loop secured with a quick-release locking pin mechanism. They are used as a connecting link in all manner of rigging systems, from boats and ships to industrial crane rigging.
A carabiner is a variety of shackle used in mountaineering.
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A pin shackle is closed with a clevis pin. Primarily used above the deck, pin shackles used to be the most common shackle used aboard boats. Pin shackles can be inconvenient to work with at times because they are secured using something else, usually a split pin or seizing wire.
The pin is threaded and one leg of the shackle is tapped. The pin may be captive, which means it is mated to the shackle, usually with a wire. The threads may gall if over-tightened or have been corroding in salty air, so a liberal coating of lanolin or a heavy grease is not out of place on any and all threads. A shackle key or metal marlinspike are useful tools for loosening a tight nut.
For safety, it is common to mouse a threaded shackle to keep the pin from coming loose. This is done by looping mousing wire through the hole in the pin and around the shackle body. For pins that have a cross-hole in the threaded end a cotter pin can be used. One disadvantage is that mousing can introduce galvanic corrosion because of material differences; it is especially bad when used in places where the shackle is exposed to air and water.
As the name implies, a snap shackle is a fast action fastener which can be implemented single handedly. It uses a spring activated locking mechanism to close a hinged shackle, and can be unfastened under load. This is a potential safety hazard, but can also be extremely useful at times. The snap shackle is not as secure as any other form of shackle, but can come in handy for temporary uses or in situations which must be moved or replaced often, such as a sailor's harness tether or to attach spinnaker sheets. Note: When this type of shackle is used to release a significant load, it will work rather poorly (hard to release) and is likely to have the pin assembly or the split ring fail.
Also known as a chain shackle, D-shackles are narrow shackles shaped like a loop of chain, usually with a pin or threaded pin closure. D-shackles are very common and most other shackle types are a variation of the D-shackle. The small loop can take high loads primarily in line. Side and racking loads may twist or bend a D-shackle.
This longer version of a D-shackle is used to attach halyards to sails, especially sails fitted with a headboard such as on Bermuda rigged boats. Headboard shackles are often stamped from flat strap stainless steel, and feature an additional pin between the top of the loop and the bottom so the headboard does not chafe the spliced eye of the halyard.
A twist shackle is usually somewhat longer than the average, and features a 90° twist so the top of the loop is perpendicular to the pin. One of the uses for this shackle include attaching the jib halyard block to the mast, or the jib halyard to the sail, to reduce twist on the luff and allow the sail to set better.
With a larger "O" shape to the loop, this shackle can take loads from many directions without developing as much side load. However, the larger shape to the loop does reduce its overall strength. Also referred to as an anchor shackle.
Look up shackle in Wiktionary, the free dictionary. |
Wikimedia Commons has media related to: Shackles |
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