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2. Three-point hitch - Wikipedia

   en.wikipedia.org/wiki/Three-point_hitch

   Adjustable three-point ball on lift arm. Ball may be rotated to fit either Category I or Category II implements Rear three-point hitch of a Case IH tractor with implement attached by the drawbar. There are five different hitch sizes, called categories. The higher category hitches have sturdier lift arms and larger connector pins. [2]

3. Fifth-wheel coupling - Wikipedia

   en.wikipedia.org/wiki/Fifth-wheel_coupling

   The coupling consists of a kingpin, a 2-or-3 + 1 ⁄ 2-inch-diameter (50.8 or 88.9 mm) vertical steel pin protruding from the bottom of the front of the semi-trailer, and a horseshoe-shaped coupling device called a fifth wheel on the rear of the towing vehicle. As the connected truck turns, the downward-facing surface of the semi-trailer (with ...

4. Quick coupler - Wikipedia

   en.wikipedia.org/wiki/Quick_coupler

   There are many variations in the design of quick couplers. The initial divergence is between those that can pick up any of a range of buckets and attachments by clamping onto the mounting pins for the attachment (known as "pin grabbers" or "pin couplers") and those that work only with buckets and attachments designed to suit that quick coupler (known as "dedicated").

5. Drawbar (haulage) - Wikipedia

   en.wikipedia.org/wiki/Drawbar_(haulage)

   A large ballast tractor pulling a load using a drawbar General duty tow hitch from VBG on a truck and a drawbar on a trailer, showing a connected drawbar eye Rockinger drawbar coupling, in which the drawbar eye gets locked. A drawbar is a solid coupling between a hauling vehicle and its hauled load. Drawbars are in common use with rail ...

6. List of friction hitch knots - Wikipedia

   en.wikipedia.org/wiki/List_of_friction_hitch_knots

   A friction hitch tied around a thicker rope that can slide while unloaded, but locks when loaded. [2] [3] Similar to the Prusik. Michoacan/Martin is a full equivalent to Gripping sailor's hitch: Pile hitch: The pile hitch is easier to tie than the icicle hitch, and can be tied in the bight without access to either end of the rope. Prusik or Prussik

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