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  2. Gin pole - Wikipedia

    en.wikipedia.org/wiki/Gin_pole

    A gin pole in use loading logs A gin pole used to install a weather vane atop the 200-foot steeple of a church Roof trusses being assembled with gin poles. A gin pole is a mast supported by one or more guy-wires that uses a pulley or block and tackle mounted on its upper end to lift loads. The lower end is braced or set in a shallow hole and ...

  3. Shear legs - Wikipedia

    en.wikipedia.org/wiki/Shear_legs

    Shear legs are a lifting device related to the gin pole, derrick and tripod (lifting device). Shears are an A-frame of any kind of material such as timbers or metal, the feet resting on or in the ground or on a solid surface which will not let them move and the top held in place with guy-wires or guy ropes simply called "guys".

  4. Category:Lifting equipment - Wikipedia

    en.wikipedia.org/wiki/Category:Lifting_equipment

    Pages in category "Lifting equipment" The following 27 pages are in this category, out of 27 total. ... Gin pole; H. Hoist (device) Hydraulic jack; J. Jack (device) L.

  5. Derrick - Wikipedia

    en.wikipedia.org/wiki/Derrick

    A derrick is a lifting device composed at minimum of one guyed mast, as in a gin pole, which may be articulated over a load by adjusting its guys. Most derricks have at least two components, either a guyed mast or self-supporting tower , and a boom hinged at its base to provide articulation, as in a stiffleg derrick.

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  7. Gyn - Wikipedia

    en.wikipedia.org/wiki/Gyn

    A gyn is an improvised three-legged lifting device used on sailing ships. It provides more stability than a derrick or sheers, and requires no rigging for support. Without additional support, however, it can only be used for lifting things directly up and down. Gyns may also be used to support either end of a ropeway. [1]

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