1
Maurice E Miller: Disc harrow wheel lock-down with depth control adjustment structure. Zarley McKee Thomte Voorhees & Sease, February 14, 1978: US04073345 (28 worldwide citation)

An apparatus for positively locking the wheels of a disc in transport and depth control positions. The disc harrow comprises a frame having disc sections thereto. A transversely extending axle is secured to the frame and has ground engaging wheels at the opposite ends thereof which control the disci ...


2
Eugen J Birkenbach, Robert D Woodworth: Hydraulic angling mechanism for disc harrow gangs. International Harvester Company, F David AuBuchon, December 25, 1979: US04180135 (25 worldwide citation)

Hydraulic mechanism for varying the angular relationship between a pair of adjacent end-connected disc harrow gangs which uses the same power source that ordinarily is employed for raising and lowering the harrow frame structure as a power source to actuate the gang angling mechanism. A bell crank l ...


3
Jeffrey Powell, Edward G Sheets: Seedbed preparation implement having rotary disc with adjustable gang angle. Case, Rebecca Henkel, September 2, 2003: US06612381 (24 worldwide citation)

A disc gang is provided that is suitable for use as part of a multifunctional seedbed preparation implement or in a standalone disc harrow. The disc gang is configured to permit a gang angle of the disc gang to be adjusted to accommodate differing soil conditions and/or to obtain different tillage c ...


4
Robertson Sr Jackson P: Extra heavy duty multi-disc harrow with automatic level control. April 22, 1975: US3878901 (20 worldwide citation)

Agricultural machine adaptable for use as a multi-disc harrow having a longitudinally rigid, but transversely and diagonally flexible main frame assembled from prefabricated front, rear, left and right frame sections, each of which sections includes longitudinal and transverse components welded toge ...


5
Brundage John F, McKay James J: Hydraulic transport, leveling, and hitching mechanism. Allis Chalmers Corporation, Schwab Charles L, October 14, 1975: US3912018 (20 worldwide citation)

A disc harrow provided with a leveling hydraulic cylinder and a lifting cylinder for leveling and adjusting the height of such harrow, the leveling cylinder and lifting cylinder being connected in parallel to the hydraulic pressure source of a towing tractor. The leveling cylinder being connected be ...


6
Robert D Hentrich Sr: Disc standard assembly. Deere & Company, June 8, 1982: US04333535 (19 worldwide citation)

In a disc harrow, the disc gang is connected to the harrow frame by shock absorbing support assemblies. Each support assembly includes a rigid standard with an upper end fixed to the frame. The lower end of the standard is pivotally attached to a forward end of a bearing arm. The rearward end of the ...


7
Robert D Glueck: Lift for dragged implement. Polster Polster and Lucchesi, September 12, 1978: US04113028 (18 worldwide citation)

A lift device is mounted on a wheeled implement such as a disc harrow which has retractable wheels for transport. The lift device includes a pair of arms mounted on a horizontal pivot bar which is rotated by activation of the mechanism for lowering the wheels of the disc harrow. The arms hold a draw ...


8
Robertson Sr Jackson P: Extra heavy duty multi-disc harrow with automatic level control. September 18, 1973: US3759332 (16 worldwide citation)

Agricultural machine adaptable for use as a multi-disc harrow having a longitudinally rigid, but transversely and diagonally flexible main frame assembled from prefabricated front, rear, left and right frame sections, each of which sections includes longitudinal and transverse components welded toge ...


9
Shane P Kelly, Peter L L Kelly: Disc harrow agricultural implement. Dale J Ream, October 27, 2009: US07607489 (15 worldwide citation)

An agricultural implement includes first and second outer harrows positioned adjacent front and left sides and front and right sides of a frame, respectively, at generally opposite diagonal directions. Third and fourth harrows are similarly positioned adjacent rear and left sides and rear and right ...


10
Clarence B Richey: Implement spring cushion. Massey Ferguson Detroit MI, Gerhardt Greenlee & Farris, November 16, 1971: US3620310 (15 worldwide citation)

A disc harrow comprises a peripheral frame and pairs of front and rear gangs mounted on gang frames. A foldable wing is provided at the end of each gang to enable folding to a narrower dimension for transport. The inner end of each gang frame mounts a plate having a threaded aperture that receives a ...



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