Jubilee® clips are worm screw clamps used to secure tubing to fittings. They consist of a stamped metal band joined by a worm gear, allowing for high torque. Originally invented in the UK, variations are used in many applications, with the brand name sometimes used generically. The design is simple but effective, using stainless steel or electroplated metal to reduce corrosion. Alternatives include spring steel and wire clamps.
A Jubilee® clip is a type of worm screw clamp that is typically used to secure tubing to fittings. These clamps are composed of a stamped metal band that is joined by a worm gear. The stamped metal has perforations into which the worm gear fits and as the clamp is rotated it loosens or tightens. The worm gear design can allow a Jubilee® clip to tighten with relatively high torque relative to the effort expended to tighten. Variations of the original Jubilee® Clip are used in many different applications, although one particularly common use is automobile radiator and heater hoses.
The Jubilee® Clip was originally invented in the early 20th century in the UK. A UK Royal Navy officer saw the need for such a device in the course of his service and devised the first worm screw clamp after his retirement. The original Jubilee® design has been developed and modified over the years, resulting in a large number of different worm gear clamps.
In some parts of the world, the Jubilee® brand name is used to refer to all worm gear terminals. The brand has not made the same inroads in all markets, so even original Jubilee® clips are sometimes referred to by generic names. Some generic terms that may refer to a Jubilee® clip include worm clamp, hose clamp, and hose clamp. Each name refers to a similar range of devices.
The design of a Jubilee® clip is relatively simple but very effective in attaching hoses to solid pipes or fittings. The use of a worm gear can allow for an increase in torque over other designs, and the stamped metal band can apply even pressure to the outer circumference of a pipe. The stamped metal band is made of stainless steel, zinc plated or electroplated to reduce the possibility of corrosion.
Other similar projects may use a variety of methods to attach pipes to pipes or fittings. A common alternative is the spring steel clamp, which is a simple metal band with ears that can be compressed to increase its diameter. Spring steel clamps can be difficult to remove in restricted access areas and are often difficult to reinstall once removed. Another alternative is the wire clamp, which uses two loops of heavy wire that are tightened with a screw and nut. These hose clamps function similar to the Jubilee® design, but do not benefit from a worm gear.
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