Editing Hose clamp (section)

=== Screw/band (worm gear) clamps ===
Screw clamps consist of a band, often [[galvanization|galvanized]] or [[stainless steel]], into which a [[screw]] thread pattern has been cut or pressed.  One end of the band contains a captive screw.  The clamp is put around the hose or tube to be connected, with the loose end being fed into a narrow space between the band and the captive screw.  When the screw is turned, it acts as a [[worm drive]] pulling the threads of the band, causing the band to tighten around the hose (or when screwed the opposite direction, to loosen). Screw clamps are normally used for hoses 1/2 inch diameter and up, with other clamps used for smaller hoses.

The first patent for a worm-drive hose clamp was granted to Swedish inventor {{illm|Knut Edwin Bergström|se}} in 1896 <ref>{{cite web |url=https://blog.normagroup.com/en/the-history-of-the-hose-clamp/ |title=The History of the Hose Clamp |last=Bulgrin |first=Markus |date=2017-05-11 |access-date=2018-05-13}}</ref>  Bergström founded “Allmänna Brandredskapsaffären E. Bergström & Co.” in 1896 (ABA) to manufacture these worm gear clamps.

Other names for the worm gear hose clamp include worm drive clamp, worm gear clips, clamps, [[band clamps]], hose clips, and [[genericized]] names such as [[Jubilee Clip]].

Many public organizations maintain hose clamp standards, such as [[Aerospace Industries Association]]'s [[National Aerospace Standards]] NAS1922 and NAS1924, the [[Society of Automotive Engineers]]' J1508, etc.<ref>{{cite web |url=https://www.sae.org/standards/content/j1508_199708/ |title=Hose Clamp Specifications |author=Society of Automotive Engineers |author-link=Society of Automotive Engineers | date=2009-03-06 |access-date=2018-08-14}}</ref><ref>{{cite web |url=https://www.aia-aerospace.org/news/national-aerospace-standards/ |title=National Aerospace Standards |author=Aerospace Industries Association |author-link=Aerospace Industries Association |access-date=2018-08-14}}</ref>

Pairs of screw clamps on a short rubber tube form a "no-hub band," often used for attaching sections of [[Domestic water system|domestic wastewater]] piping, or used for other pipes as a flexible coupler (to fix alignment difficulties or to prevent pipe breakage due to relative movement of sections) or an emergency repair.

[[File:JubileeClip.jpg|thumb|A hose clamp used to hold the leather in place while tying-in the bag of bagpipes.]]They can also be used in a similar way, as a simple means for the transmission of small amounts of [[power (physics)|power]]. A short length of hose is clipped between two [[Driveshaft|shafts]] where [[oscillation|vibration]] or variations in alignment may be taken up by the flexibility of the hose. This technique is well adapted to use for mock-ups in a development laboratory.

This type of clamp was marketed in 1921 by ex [[Royal Navy]] Commander, Lumley Robinson, who founded L. Robinson & Co (Gillingham) Ltd., a business in [[Gillingham, Kent]]. The company owns the trademark for [[Jubilee Clip]].

Similar types of clamps for hoses include the [[Marman clamp]], which also has a screw band and a solid screw.

Interlocking plastic clamps, where the large fin clip base is designed for overlocking and interlocking the jaw to the required tightness.

T clamps are designed for high pressure pipes and hoses such as turbo pressure hoses and coolant hoses for high pressure engines. These clamps have a small grub screw that pulls the two halves of the clamp together to securely fasten heavy duty hoses.