Chisel plow

Claim 2

An earth working apparatus having a rigid frame structure mounted on supporting wheels and carrying a plurality of earth working devices, said frame structure comprising front and rear transverse end frame members connected at respectively opposite sides of the frame structure by longitudinally extending side frame members, a pair of longitudinal frame members spaced respectively inwardly from said side frame members at opposite sides of the frame structure connecting said front and rear end frame members to define wheel openings in the frame structure, a transversely disposed frame member spaced inwardly from said rear transverse end frame member and connecting said longitudinal frame members, a pair of transversely extending frame members spaced inwardly from said front transverse end frame member and extending inwardly respectively from said longitudinal frame members at opposite sides of the frame structure and spaced apart at their inner ends upon opposite sides of the longitudinal centerline of the frame structure, a pair of central longitudinally disposed frame members spaced respectively equidistant upon opposite sides of said longitudinal centerline extending between said front and rear transverse end frame members, said transversely disposed frame member and said pair of transversely extending frame members extending through said central longitudinally disposed frame members and all of said frame members being integrated by welding, said supporting wheels being operatively mounted on vertically disposed wheel mounts in said respective wheel openIngs, a first and second set of parallel links each having a pivotal connection with each said wheel mount and said first set of links having a pivotal connection directly with said frame structure, a crank axle pivotally mounted on the frame structure and connecting the second set of links with the wheel mount said second set of links pivotally mounted on the frame structure by said crank axle in vertically spaced relation to said pivotal connection of the first set of links, a generally vertical crank arm secured to one of the links of said second set of links at each wheel mount, a pair of hydraulic cylinders each pivotally connected at one end thereof to each said crank arm and pivotally connected at their respectively opposite ends on said frame structure whereby to impart a rotative action on said sets of links about their pivotal connections with said frame structure and thereby move said wheel mounts in a vertical direction, said crank axle having a generally vertical crank arm fixed thereto and disposed intermediate said crank arms at said wheel mounts, and a hydraulic cylinder pivotally connected at one end thereof to said crank axle crank arm and pivotally connected at its opposite end on said frame structure whereby to impart a rotative action on said crank axle.

Claim 3

An earth working apparatus as set forth in claim 1 wherein a pair of longitudinally disposed fertilizer supply tanks are supported in side-by-side relationship on said frame structure, a pair of longitudinally spaced supporting saddle structures for each of said tanks on said frame structure, each said saddle structure having a pedestal members mounting the respective saddle structures on the frame structure, said pedestal members being spaced apart longitudinally of the frame structure, means connecting the saddle structures under each said tank, one pedestal member for each said tank being supported on and secured to said transversely disposed frame member and one pedestal member for each said tank being supported on and secured to one of said pair of transversely extending frame members, and means binding said fertilizer supply tanks respectively on said saddle structures, said last named means being located substantially coincident with said pedestal members.

Claim 4

An earth-working apparatus having a rigid frame mounted on supporting wheels and carrying a plurality of earth-working devices, a draft tongue having a pivotal mounting on said frame adapted to be hitched to a towing vehicle, said draft tongue having an extension thereof inwardly of said frame beyond said pivotal mounting, a vertically disposed wheel mount for each of said supporting wheels, a rotary crank axle mounted transversely on said frame having a horizontal axis, a longitudinally extending link connecting each of said wheel mounts with said rotary crank axle, said links each comprising a crank arm operative from said crank axle, a second longitudinally extending link vertically spaced relative to each of the first links, said second links being parallel to the first links and of the same length as the first links and respectively connecting said wheel mounts with a respectively associated axle mounted on said frame having a horizontal axis in vertical alignment with the axis of said rotary crank axle whereby said respective wheel mounts are constrained to vertical movement in respectively vertical positions throughout their extent of travel between raised and lowered positions, power means to rotate said rotary crank axle whereby said first links comprise laterally spaced crank arms to impart vertical movement of the wheel mounts, said second links acting to maintain the vertical position of each wheel mount during movement between said raised and lowered positions, an upper crank arm provided on the crank axle disposed intermediate said first links, said power means having operative engagement at one end thereof with said upper crank arm to rotate the crank axle, a pivotal connection at the opposite end of the power means on said frame, a telescoping link connection extending between said upper crank arm and said frame to limit rotation of the crank axle in a direction that lowers the frame relative to said wheel mounts to fix the operating height of said earthworking devices for the operations of said apparatus, a depending crank arm centrally disposed on said crank axle, and a link connecting said depending crank arm with said inward extension of said draft tongue to compensate for adjustments in height of the frame to effect normal hitching to said towing vehicle and maintain the frame and draft tongue subtantially level upon rotation of the crank axle, and two additional power means, one located on either side of said first-named power means and each said additional power means connected respectively at one end thereof with a longitudinally extending link connecting said respective wheel mounts with said crank axle, said additional power means being pivotally connected at the respectively opposite end thereof to said rigid frame whereby to impart rotative forces on said crank axle at points spaced on opposite sides of said first-named power means.

Claim 5

An earth-working apparatus having a rigid frame mounted on supporting wheels and carrying a plurality of earth-working devices, a draft tongue having a pivotal mounting on said frame adapted to be hitched to a towing vehicle, said draft tongue having an extension thereof inwardly of said frame beyond said pivotal mounting, a vertically disposed wheel mount for each of said supporting wheels, a rotary crank axle mounted transversely on said frame having a horizontal axis, a longitudinally extending link connecting each of said wheel mounts with said rotary crank axle, said links each comprising a crank arm operative from said crank axle, a second longitudinally extending link vertically spaced relative to each of the first links, said second links being parallel to the first links and of the same length as the first links and respectively connecting said wheel mounts with a respectively associated axle mounted on said frame having a horizontal axis in vertical alignment with the axis of said rotary crank axle whereby said respective wheel mounts are constrained to vertical movement in respectively vertical positions throughout their extent of travel between raised and lowered positions, power means to rotate said rotary crank axle whereby said first links comprise laterally spaced crank arms to impart vertical movement of the wheel mounts, said second links acting to maintain the vertical position of each wheel mount during movement between said raised and lowered positions, an upper crank arm provided on the crank axle disposed intermediate said first links, said power means having operative engagement at one end thereof with said upper crank arm to rotate the crank axle, a pivotal connection at the opposite end of the power means on said frame, a telescoping link connection extending between said upper crank arm and said frame to limit rotation of the crank axle in a direction that lowers the frame relative to said wheel mounts to fix the operating height of said earthworking devices for the operations of said apparatus, a depending crank arm centrally disposed on said crank axle, and a link connecting said depending crank arm with said inward extension of said draft tongue to compensate for adjustments in height of the frame to effect normal hitching to said towing vehicle and maintain the frame and draft tongue subtantially level upon rotation of the crank axle, and two additional power means, one located on either side of said first-named power means and each said additional power means connected respectively at one end thereof with a longitudinally extending link connecting said respective wheel mounts with said crank axle, said additional power means being pivotally connected at the respectively opposite end thereof to said rigid frame whereby to impart rotative forces on said crank axle at points spaced on opposite sides of said first-named power means.