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Rings, slides and hooks are the accessories used in intimate apparel/lingerie used for adjustment and decorative functions. Rings, slides and hooks are commonly made of plastic and nylon coated metal and stainless steel. Rings are used for joining straps to allow length adjustment and vary strap angle to bra cup. A ring can be in any shape, for example circular, rectangular, triangular or even heart and flower shaped. A slide has its crossbar recessed below the planes of edges of the longitudinal limits, which limits sliding of the frame on a strap. The slide has its thickest portions at the centers of transverse bars at which the central bar merges with the remainder of the slide. The strap passes around the central bar or directly through one of the slots to a ring and returns through that slot across the central bar and through the other slot in the slide to the shoulder of the wearer. Hook is a rectangular shape, similar to the slides but with an opening at its one end which used to hang detachable or multi-way straps to a bra. It is hooking bra shoulder straps to a strapless bra, re-positioning the straps to achieve the various looks, such as halter-neck and crossed-back. == History== Rings and slides have been used on apparel products since the 1800s. Found from the US patent document number 174,459 in year 1876, Alexander Adamson applied on suspenders – rings for providing varying strap angle and slide for positioning the back straps.〔Alexander Adamson, US patent document number 174,459, 1876〕 Ellen M. Degenhart from the US patent document number 863,159 in year 1907, invented slides in a garment supporter, which is for strap length adjustment.〔Ellen M. Degenhart, US patent document number 863,159, 1907〕 Brassieres date from the early 1900s. At the initial stage, they are with the very simple design, made from two handkerchiefs and narrow strap, with no ring or slide for adjusting strap length. Later, slide was introduced to the brassiere for increasing or reducing the strap length. Found from the US patent document number 1,590,693 in year 1926, Elvira Campa McKeefrey put slides on straps. It is said the first bra with adjustable straps.〔Elvira Campa McKeefrey, US patent document number 1,590,693, 1926〕 However, rings launched on brassieres were much later about 1940s. Sam Samuels patented the invention in US, document number 2,246,638 in year 1941.〔Sam Samuels, US patent document number 2,246,638, 1941〕 The predecessor of hooks on brassieres was the buttons and buttonholes. The introduction of hooks was documented in US patent number 2,140,164 by William H. Moffatt in year 1938.〔William H. Moffatt, US patent document number 2,140,164, 1938〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ring, slide and hook」の詳細全文を読む スポンサード リンク
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