1
Edward M Jankowski: Grapple system. Du Al Manufacturing Company Division of Core, Hill Van Santen Steadman Chiara & Simpson, August 25, 1981: US04285628 (21 worldwide citation)

A grapple system is disclosed for mounting on the bucket of a tractor. A pple tooth frame is provided having a plurality of grapple teeth extending in fork-like fashion from a pivot tube. A linkage housing is also provided which contains first and second series connected linkages with a hydraulic ex ...


2
Leslie J Slunecka, Calvin H Hansen, Leroy B Stumpe: Trencher attachment. Du al Manufacturing Company, Hill Van Santen Steadman & Simpson, May 30, 1989: US04833797 (14 worldwide citation)

A tractor with a trencher and a blade or shovel on the front of the tractor, the trencher connected to the tractor by a three-point hitch, the trencher having a boom pivotal up and down and a pair of laterally spaced swivel wheels beneath the trencher supported on arms pivoted to the frame and exten ...


3
Richard H Mott: Hydraulic cylinder. DU AL Manufacturing Company, Hill Gross Simpson Van Santen Steadman Chiara & Simpson, January 18, 1977: US04003297 (13 worldwide citation)

A hydraulic cylinder assembly for farm machinery or the like including a tubular elongate cylinder with a smooth inner cylindrical wall and a fluid inlet at a first end with a hollow piston rod slidable therein having an annular piston secured at a first end and slidable within the cylinder wall wit ...


4
Leroy Stumpe: Loader mount. Du Al Manufacturing Company, Hill Van Santen Steadman & Simpson, January 20, 1987: US04637772 (11 worldwide citation)

A mount for disconnectably attaching an appliance such as a loader on the front end of a tractor with the loader having a mounting frame with channels at each side receiving a front mount on the tractor, the frame also having a U-shaped stand which is pushed upwardly to a horizontal position by the ...


5
Richard H Mott, Clyde L Pritchard: Automatic hydraulic series-parallel shift device for implement. Du Al Manufacturing Company, Hill Gross Simpson Van Santen Steadman Chiara & Simpson, December 12, 1978: US04129258 (11 worldwide citation)

An apparatus such as a farm implement or other mechanical device subject to varying loads and power requirements has an hydraulic circuit which automatically shifts two or more hydraulic motors from a normal series operation at high speed to a parallel operation at reduced speed but higher torque in ...


6
Leroy B Stumpe: Hydra-lift stand for loaders. Du Al Manufacturing Company, Hill Van Santen Steadman & Simpson, July 14, 1992: US05129780 (7 worldwide citation)

A method and apparatus for supporting a loader on the ground and lifting parts of the loader above the tractor for disengagement from the tractor wherein the loader includes vertical side columns for detachable attachment to a tractor at their base, parallel side frame members pivotally attached at ...


7
Erlenbusch Gary L, Hansen Calvin N, Mott Richard H: Automatic gate for hay bale accumulator. Du Al Manufacturing Company, December 18, 1973: US3779402 (5 worldwide citation)

An automatic gate for a hay bale accumulator which includes a control arm mounted to pivot about a substantially horizontal axis as bales of hay are alternately received in the accumulator until such time that feeler arms attached to the control arm are prevented from rotating about a horizontal axi ...


8
Richard H Mott, Gary L Erlenbusch: Bale handling device. Du Al Manufacturing Company, Hill Gross Simpson Van Santen Steadman Chiara & Simpson, March 16, 1976: US03944274 (4 worldwide citation)

A bale handling device, more particularly a bale pick-up device, includes a plurality of squared C-shaped hooks which are individually pivotally mounted between pairs of elongate support members and pivotally mounted to actuating members for pivoting into a raised position out of engagement with the ...


9
Gary L Erlenbusch, Richard H Mott: Automatic gate for a bale accumulator. Du Al Manufacturing Company, Hill Gross Simpson Van Santen Steadman Chiara & Simpson, May 25, 1976: US03958823 (2 worldwide citation)

An improved gate for a bale accumulator which prevents bouncing of the latching mechanisms so that the gate passes by and is unlocked. Automatic bale accumulators accumulate bales of hay and release them when the accumulator is filled; and after all of the bales have passed out of the accumulator, t ...


10


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