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  2. List of John Deere tractors - Wikipedia

    en.wikipedia.org/wiki/List_of_John_Deere_tractors

    John Deere Model 60 (1955) John Deere Model 530 (1959) John Deere Model 430S (circa 1960) After years of testing, Deere & Company released its first proper diesel engined tractor in 1949, the Model R. The R was also the first John Deere tractor with a live independent power take-off (PTO) equipped with its own clutch. The R also incorporated ...

  3. Overconstrained mechanism - Wikipedia

    en.wikipedia.org/wiki/Overconstrained_mechanism

    The reason of over-constraint is the unique geometry of linkages in these mechanisms, which the mobility formula does not take into account. This unique geometry gives rise to "redundant constraints", i.e. when multiple joints are constraining the same degrees of freedom. These redundant constraints are the reason of the over-constraint.

  4. John Deere - Wikipedia

    en.wikipedia.org/wiki/John_Deere

    John Deere Equipment Pvt Ltd (5000-series tractors), Dewas, India; John Deere Electronic Solutions, Fargo, ND and Pune, India; John Deere Harvester Works, Sirhind-Fategarh, India; John Deere Werke Mannheim (6000-series tractors), Mannheim, Germany; John Deere Brasil: Montenegro, Rio Grande do Sul (tractors), Horizontina - RS (harvesters and ...

  5. John Deere Powershift transmission - Wikipedia

    en.wikipedia.org/wiki/John_Deere_Powershift...

    The John Deere PowerShift transmission was an eight-speed semi-automatic transmission without a torque converter, used in John Deere tractors, including the iconic John Deere Model 4020. [1] The Powershift is not to be confused with similar John Deere transmissions (including the Quad-Range and the PowrQuad [ 2 ] ), or with the Ford Ultra ...

  6. Six-bar linkage - Wikipedia

    en.wikipedia.org/wiki/Six-bar_linkage

    Six-bar linkage from Kinematics of Machinery, 1876. In mechanics, a six-bar linkage is a mechanism with one degree of freedom that is constructed from six links and seven joints. [1] An example is the Klann linkage used to drive the legs of a walking machine. In general, each joint of a linkage connects two links, and a binary link supports two ...

  7. Four-bar linkage - Wikipedia

    en.wikipedia.org/wiki/Four-bar_linkage

    If the linkage has four hinged joints with axes angled to intersect in a single point, then the links move on concentric spheres and the assembly is called a spherical four-bar linkage. The input-output equations of a spherical four-bar linkage can be applied to spatial four-bar linkages when the variables are replaced by dual numbers. [8]

  8. Linkage (mechanical) - Wikipedia

    en.wikipedia.org/wiki/Linkage_(mechanical)

    Linkage mobility Locking pliers exemplify a four-bar, one degree of freedom mechanical linkage. The adjustable base pivot makes this a two degree-of-freedom five-bar linkage. It is common practice to design the linkage system so that the movement of all of the bodies are constrained to lie on parallel planes, to form what is known as a planar ...

  9. Watt's linkage - Wikipedia

    en.wikipedia.org/wiki/Watt's_linkage

    Watt's linkage automobile suspension Watt's linkage train suspension. Watt's linkage is used in the rear axle of some car suspensions as an improvement over the Panhard rod, which was designed in the early twentieth century. Both methods are intended to prevent relative sideways motion between the axle and body of the car.