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  2. Screw extractor - Wikipedia

    en.wikipedia.org/wiki/Screw_extractor

    Straight fluted extractors may come in a kit that also has associated drills, drill bushings, and special nuts, or be sold individually. The screw is drilled out with the appropriate drill and drill bushing. The extractor is then hammered into the hole with a brass hammer, because a steel hammer is more likely to cause the extractor to break.

  3. Screwfix - Wikipedia

    en.wikipedia.org/wiki/Screwfix

    Screwfix Direct Limited, trading as Screwfix, is a retailer of trade tools, accessories and hardware products based in the United Kingdom. [6] Founded in 1979 as the Woodscrew Supply Company, the company was acquired in July 1999 by Kingfisher plc , which also owns B&Q , and is listed on the London Stock Exchange .

  4. Expeller pressing - Wikipedia

    en.wikipedia.org/wiki/Expeller_pressing

    Expeller pressing (also called oil pressing) is a mechanical method for extracting oil from raw materials. The raw materials are squeezed under high pressure in a single step. When used for the extraction of food oils, typical raw materials are nuts, seeds and algae, which are supplied to the press in a continuous feed. As the raw material is ...

  5. Extraction of petroleum - Wikipedia

    en.wikipedia.org/wiki/Extraction_of_petroleum

    Tertiary recovery begins when secondary oil recovery is not enough to continue adequate extraction, but only when the oil can still be extracted profitably. This depends on the cost of the extraction method and the current price of crude oil. When prices are high, previously unprofitable wells are brought back into use, and when they are low ...

  6. List of companies of the United Kingdom K–Z - Wikipedia

    en.wikipedia.org/wiki/List_of_companies_of_the...

    Screwfix Direct Ltd (trading as Screwfix) — is a company that operates a retail store chain, retail website, and mail order catalogue offering building trade tools, accessories, and hardware, DIY and home improvement products, and garden supplies. It is headquartered in Yeovil, Somerset. It was founded in 1979 by Jon Goddard-Watts as the ...

  7. Soxhlet extractor - Wikipedia

    en.wikipedia.org/wiki/Soxhlet_extractor

    A Soxhlet extractor is a piece of laboratory apparatus [1] invented in 1879 by Franz von Soxhlet. [2] It was originally designed for the extraction of a lipid from a solid material. Typically, Soxhlet extraction is used when the desired compound has a limited solubility in a solvent , and the impurity is insoluble in that solvent.