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  2. Cultivator No. 6 - Wikipedia

    en.wikipedia.org/wiki/Cultivator_No._6

    Cultivator No. 6 was the code name of a military trench-digging machine developed by the British Royal Navy at the beginning of World War II.The machine was originally known as White Rabbit Number Six; this code name was never officially recognised, but it was said to be derived from Churchill's metaphorical ability to pull ideas out of a hat.

  3. Drag link - Wikipedia

    en.wikipedia.org/wiki/Drag_link

    Steering system showing drag link. A drag link converts rotary motion from a crank arm, to a second bellcrank, usually in an automotive steering system.. While the origin of the term is not clear, it pre-dates the automobile, and is described as in use in 1849 as a means of rotating a Ducie cultivator being operated by cable by stationary steam engine (or between engines).

  4. Master link - Wikipedia

    en.wikipedia.org/wiki/Master_link

    A master link or quick-release link is a roller chain accessory that allows convenient connection and disconnection of a chain without the need for a chain tool. [1] It acts as a set of the chain's outer plates, so joining two sets of the chain's inner plate ends. Such master links may or may not be re-usable. [2]

  5. Trencher (machine) - Wikipedia

    en.wikipedia.org/wiki/Trencher_(machine)

    A chain trencher cuts with a digging chain or belt that is driven around a rounded metal frame, or boom. It resembles a giant chainsaw. This type of trencher can cut ground that is too hard to cut with a bucket-type excavator, and can also cut narrow and deep trenches. The angle of the boom can be adjusted to control the depth of the cut.

  6. Bucket-wheel excavator - Wikipedia

    en.wikipedia.org/wiki/Bucket-wheel_excavator

    Bucket wheel excavators and bucket chain excavators take jobs that were previously accomplished by rope shovels and draglines. They have been replaced in most applications by hydraulic excavators , but still remain in use for very large-scale operations, where they can be used for the transfer of loose materials or the excavation of soft to ...

  7. Three-point hitch - Wikipedia

    en.wikipedia.org/wiki/Three-point_hitch

    Three-point hitches are composed of three movable arms. The two lower arms—the hitch lifting arms—are controlled by the hydraulic system, and provide lifting, lowering, and even tilting to the arms. The upper center arm—called the top link—is movable, but is usually not powered by the tractor's hydraulic system.

  8. Chain Belt Company - Wikipedia

    en.wikipedia.org/wiki/Chain_Belt_Company

    In 1914 it introduced the Rex brand-name, which was first used on a chain-driven concrete mixer. It soon became a widely recognized trademark. In 1923, C.R. Messinger of Chain Belt Company served as President of the American Foundry Society for a one-year term. In 1941 it won the combined Army and Navy Award for Excellence in War Production. [4]

  9. Link (unit) - Wikipedia

    en.wikipedia.org/wiki/Link_(unit)

    A Gunter's chain showing the individual links. The link (usually abbreviated as "l.", "li." or "lnk."), sometimes called a Gunter’s link, is a unit of length formerly used in many English-speaking countries. In US customary units modern definition, the link is exactly 66 ⁄ 100 of a US survey foot, [1] or exactly 7.92 inches or 20.1168 cm.