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Nowadays, one of the most common designs for light loads is the split-ribbed plastic anchor. It consist of two halves that increase their separation (split) as the screw penetrates between them. As its name suggests, this type of anchor also has ribs on the outside to prevent the anchor from slipping
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Early wall plugs were thick-walled fibre tubes, made of parallel strings bonded with glue. The
Rawlings brothers conducted thousand of trials using many diverse materials in their search for the perfect plug. Among the many solutions tested were plugs made of lead, zinc, natural and synthetic rubber,
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There are many forms of wall plug, but the most common principle is to use a tapered tube of soft material, such as plastic. This is inserted loosely into a drilled hole, then a screw is tightened into the centre. As the screw enters the plug, the soft material of the plug expands conforming tightly
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Before commercial wall plugs, fixings were made to brick or masonry walls by chiselling a groove into a soft mortar joint, hammering in a crude wooden plug and then attaching to the wooden plug. This was time consuming and required a large hole, thus more patching of the wall afterwards. It also
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to bond into the wall. The pad is wetted and wrapped around the wall plug, and the two are inserted into the hole; after a short time it hardens and a strong bond is achieved and the wall fitting can be applied. It is used in combination with wall plugs in
224:, when a demand for retro-fitting existing buildings with new electric lighting coincided with a shortage of labour, encouraging many new labour-saving innovations in the building trade. Rawlplug gained their prominence from their adoption in the
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Most current brands are plastic, first designed shortly after the Second World War by the German Fritz
Axthelm. In 1957, Oswald Thorsman from Sweden received a patent for a plastic wall plug; around the same time, German inventor
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fibres, sold loose in a tin. The user wetted some into a ball (usually by spitting on them) and pushed this plug of putty into the hole. A small tamper and spike was supplied with the kit. This putty worked very well, but the
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created the plastic
Fischer wall plug. The Fischer wall plug, due to its innovative shape, was the first to be suitable for all wall types, and has since been the most produced and sold wall plug worldwide.
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On crumbling walls it may be difficult to drill a clean hole, or the force of the expanding plug may be enough to cause cracking. In these cases, a hardening liquid or putty mixture may be used instead.
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Other varieties of wall plug are mechanical anchors for heavy duty loads and hollow wall fixings for fixing to plasterboard. The first mechanical anchor, the
Rawlbolt, was designed in the 1930s by the
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in material that is porous or brittle or that would otherwise not support the weight of the object attached with the screw. It is a type of anchor that, for example, allows screws to be fitted into
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means that the product is no longer available. However, another way to fix wall plugs is accomplished by the application of a cotton woven pad which has been impregnated with a special formulated
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are sometimes meant (and taken) to refer specifically to the type of plastic wall plugs with expandable wings for hollow walls, in contradistinction with
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are either impractical or ineffective. Different types have different levels of strength and can be used on different types of surfaces.
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to the wall material. Such anchors can attach one object to another in situations where screws, nails, adhesives, or other simple
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as it possessed natural resistance to the effects of humidity and for particularly damp conditions they developed a range of
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company and the first fixing for hollow walls was the Toggle Bolt, which was also designed by
Rawlplug in 1941.
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One of the first of these mixtures was produced by
Rawlplug and was composed of dry
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out of the hole as the screw is driven in. This type of anchor is also known as a
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Animation of a wall plug. (US: split-ribbed plastic anchor or conical anchor)
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This article is about the single-piece plastic fitting. For other uses, see
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Residential
Construction Academy: Basic Principles for Construction
468:"Artur Fischer, Inventor With More Patents Than Edison, Dies at 96"
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fibres, glass, wood, and paper. They imported Indian
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207:limited the holes' location to the mortar joints.
450:"Jubiläum: Fischer-Dübel feiert 60. Geburtstag"
386:"The American Heritage Dictionary entry: dowel"
384:Company, Houghton Mifflin Harcourt Publishing.
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499:"Der Dübel ist der Anker des kleinen Mannes"
138:Learn how and when to remove this message
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220:. These plugs became popular after the
210:The original wall plug was invented by
448:Ossenkopp, Michael (7 November 2018).
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30:For electrical sockets in a wall, see
214:in 1911, and marketed under the name
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497:Filser, Hubert (26 September 2016).
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162:(UK English) also known as an
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299:Anchor bolt § Chemical
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264:Split-ribbed anchor
558:1911 introductions
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454:Schwarzwälder Bote
430:"Rawlplug history"
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360:References
297:See also:
154:Wall plugs
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548:Fasteners
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166:(US) or "
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128:June 2017
404:cite web
354:Well nut
348:See also
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482:6 March
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202:History
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