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  2. Disc harrow - Wikipedia

    en.wikipedia.org/wiki/Disc_harrow

    Primary heavy duty disc harrows of 265 to 1,000 pounds (120 to 454 kg) per disc are mainly used to break up virgin land, to chop material/residue, and to incorporate it into the top soil. Lighter secondary disc harrows help completely incorporate residue left by a primary disc harrow, eliminate clumps, and loosen the remaining packed soil.

  3. Spring-tooth harrow - Wikipedia

    en.wikipedia.org/wiki/Spring-tooth_harrow

    Harrows, whether spring tooth, spike tooth or disc harrows can have a drag connection or have a 3 point mounting. A drag harrow is pulled and cannot be backed up. Three point implements can be raised and lowered hydraulicly and maneuvered more easily. A spring-tooth harrow is a type of harrow, and specifically a type of tine harrow. It uses ...

  4. Harrow (tool) - Wikipedia

    en.wikipedia.org/wiki/Harrow_(tool)

    The disk harrow is used first to slice up the large clods left by the mould-board plough, followed by the spring-tooth harrow. To save time and fuel they may be pulled by one tractor; the disk hitched to the tractor, and the spring-tooth hitched to, and directly behind, the disk. The result is a smooth field with powdery dirt at the surface.

  5. Gibson Manufacturing Corporation - Wikipedia

    en.wikipedia.org/wiki/Gibson_Manufacturing...

    Several accessories were sold to go on these tractors, including two types of plow with Sandoval coulter disks, a disk harrow, dozers, and for the Model D a sickle mower. [7] A 1939 Gibson tractor. After the company closed the designs for the Super D and the Super D2 were sold to PowerFlex.

  6. Drag harrow - Wikipedia

    en.wikipedia.org/wiki/Drag_harrow

    A 4-foot drag harrow A larger, 12 foot drag harrow simply uses three four foot sections that are connected. A drag harrow, a type of spring-tooth harrow, is a largely outdated type of soil cultivation implement that is used to smooth the ground as well as loosen it after it has been plowed and packed.

  7. Ford N-series tractor - Wikipedia

    en.wikipedia.org/wiki/Ford_N-series_tractor

    The Ford N-series tractors were a line of farm tractors produced by the Ford Motor Company between 1939 and 1952, spanning the 9N, 2N, and 8N models. [1]The 9N was the first American-made production-model tractor to incorporate Harry Ferguson's three-point hitch system, a design still used on most modern tractors today.

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