Soil cultivating implements or harrows

Claim 2

A soil cultivating implement comprising an elongated supporting frame and two groups of soil-working members, each said group being mounted on a corresponding transverse frame portion and each group comprising soil-working members rotatably supported on upwardly extending shafts by said corresponding frame portion, said shafts being arranged in a row and driving means being in driving engagement with the soil-working members of each group, coupling means at the forward side of said elongated supporting frame, said coupling means being connectable to the rear of a prime mover, said supporting frame extending across the transverse width of the implement to bridge said transverse frame portions, said transverse frame portions each being pivotably connected to the supporting frame through parallelogram linkage means, said linkage means making each group independently pivotable with respect to the other group and movable in substantially vertical directions on its corresponding transverse frame portion.

Claim 3

An implement as claimed in claim 1, wherein said shafts of said soil-working members are substantially parallel to one another.

Claim 4

An implement as claimed in claim 1, wherein said supporting frame is positioned and extends above said frame portions.

Claim 5

An implement as claimed in claim 3, wherein each frame portion is connected to said supporting frame by spaced apart parallelogram linkages of said linkage means.

Claim 6

An implement as claimed in claim 1, wherein said elongated supporting frame comprises at least two spaced apart frame beams including a foremost beam and a rearmost beam, said parallelogram linkage means together with attaching parts being secured to said foremost beam.

Claim 7

An implement as claimed in claim 3, wherein stop means interconnects said frame portions with said frame beams to limit the downward movements of said frame portions relative to said supporting frame.

Claim 8

An implement as claimed in claim 1, wherein each frame portion is adjustably connected to ground engaging means that controls the working depth of the corresponding group of soil-working members.

Claim 9

An implement as claimed in claim 7, wherein said ground engaging means comprises rotatable members that are positioned to the rear of said implement.

Claim 10

An implement as claimed in claim 8, wherein each rotatable member is pivotably mounted and pivotable in upward and downward directions.

Claim 11

An implement as claimed in claim 9, wherein each rotatable member is connected to a frame portion at the rear of said soil-working members.

Claim 12

An implement as claimed in claim 1, wherein said driving means includes a transmission gear positioned substantially centrally on said implement.

Claim 13

An implement as claimed in claim 11, wherein said transmission gear comprises a substantially centrally mounted gear box and telescopic shafts extending laterally therefrom to further gear boxes carried by the said frame portions that correspond to said groups of soil-working members.

Claim 14

An implement as claimed in claim 12, wherein said driving means includes a slip clutch.

Claim 15

An implement as claimed in claim 12, wherein said driving means includes a change-speed gear.

Claim 16

An implement as claimed in claim 1, wherein said soil-working members each includes at least one downwardly extending tine that is offset with respect to its corresponding shaft whereby the paths traced by tines of rotating adjacent soil-working membErs overlap each other during operation.

Claim 17

An implement as claimed in claim 1, wherein upright plates are pivotably connected to said implement adjacent the opposite ends of said groupds and said plates are pivotable about substantially vertical axes.

Claim 18

An implement as claimed in claim 1, wherein said supporting frame has connections for receiving means that convert the implement to an inoperative transport position and said elongated supporting frame is positionable with its longitudinal axis extending substantially parallel to the direction of travel.

Claim 19

A soil-cultivating implement comprising an elongated supporting frame and two groups of soil-working members, each said group being mounted on a corresponding transverse frame portion and each group comprising soil-working members supported for rotation about substantially vertical axes on upwardly extending shafts by said corresponding frame portion, said shafts being arranged in a row and driving means being in driving engagement with the soil-working members of each, coupling means at the forward side of said elongated supporting frame, said coupling means being connectable to the rear of a prime mover, said supporting frame extending across the transverse width of the implement to bridge said transverse frame portions, said transverse frame portions each being pivotably connected to the supporting frame through crank means and said crank means making each group independently pivotable with respect to the other group and movable in substantially vertical directions on its corresponding transverse frame portion.

Claim 20

A soil-cultivating implement comprising an elongated supporting frame and two groups of soil-working members, each said group being mounted on a corresponding transverse frame portion and each group comprising soil-working members supported for rotation about substantially vertical axes on upwardly extending shafts by said corresponding frame portion, said shafts being arranged in a row and driving means being in driving engagement with the soil-working members of each, coupling means at the forward side of said elongated supporting frame, said coupling means being connectable to the rear of a prime mover, said supporting frame extending across the transverse width of the implement to bridge said transverse frame portions, said transverse frame portions each being pivotably connected to the supporting frame through crank means and said crank means making each group independently pivotable with respect to the other group and movable in substantially vertical directions on its corresponding transverse frame portion.

Claim 21

An implement as claimed in claim 18, wherein said frame portions are each interconnected to spaced apart beams of said supporting frame through said crank means.

Claim 22

An implement as claimed in claim 19, wherein said crank means comprise at least two relatively spaced apart cranks that interconnect said beams with each of said frame portions.

Claim 23

An implement as claimed in claim 20, wherein at least one crank of said crank means is pivotably connected to said beams with brackets having coupling connections.

Claim 24

An implement as claimed in claim 21, wherein said coupling connections are movable along slots in said brackets.

Claim 25

An implement as claimed in claim 21, wherein said coupling connections are movable against the opposition of bearings made of elastic material and said bearings are located in said brackets.

Claim 26

An implement as claimed in claim 18, wherein said cranks are turnable in bracket means on said implement, the axes about which cranks of said crank means are turnable extending substantially parallel to the direction of travel.

Claim 27

An implement as claimed in claim 18, wherein said frame portions have adjacent inner ends which are connected to a common crank of said crank means.

Claim 28

An implement as claimed in claim 25, wherein said common crank is turnably connected to said supporting frame at locations adjacent the front and rear of the latter with respect to the direction of travel.

Claim 29

A soil cultivating implement comprising an elongated supporting frame and two groups of soil-working members supported on said frame, each of said groups having soil-working members rotatably mounted on upwardly extending shafts in a row and said shafts being journalled in said implement, driving means interconnecting the soil-working members of said groups, coupling means at the forward side of said implement and said coupling means being connectable to the rear of a prime mover, said supporting frame including a plurality of spaced apart beams that extend across the width of the implement to bridge said groups of soil-working members, said groups each being connected to said frame by linkage means for independently supporting said groups from said frame, said linkage means including spaced apart parallel linkages on each group and stabilizing rods interconnecting said linkages.

Claim 30

A soil cultivating implement comprising an elongated supporting frame and two groups of soil-working members supported on said frame, each of said groups having soil-working members rotatably mounted on upwardly extending shafts in a row and said shafts being journalled in said implement, driving means interconnecting the soil-working members of said groups, coupling means at the forward side of said implement and said coupling means being connectable to the rear of a prime mover, said supporting frame including a plurality of spaced apart beams that extend across the width of the implement to bridge said groups of soil-working members, said groups each being connected to said frame by linkage means for independently supporting said groups from said frame, said linkage means including spaced apart parallel linkages on each group and stabilizing rods interconnecting said linkages.

Claim 31

A soil cultivating implement comprising an elongated, substantially rigid supportIng frame and a plurality of soil-working members rotatably mounted in a row on said frame, said frame extending substantially transverse to the direction of travel, driving means interconnecting said soil-working members and coupling means secured to said frame substantially centrally thereof for attachment at the rear of a prime mover for cultivating operation, towing means on said implement adjacent one end of said frame for detachably receiving a transport structure and said implement being connectable to said prime mover with said structure and positionable in a transport position in which the longitudinal axis of said frame is located generally parallel to the direction of travel, said towing means comprising a first mounting having quick release means that detachably receives transport ground wheels and supporting means for said wheels, said first mounting being located adjacent one end of said frame and said towing means including a second mounting that detachably receives a draw bar at the opposite end of said frame, said draw bar having a front end that is adjustably connected to a ground support, said ground support having foot plate means that normally rests on the ground, said supporting means for the ground wheels comprising two detachable ground wheel supports, each ground wheel support including a substantially horizontal portion that is fixable in place relative to said supporting frame and a downwardly extending portion that is connectable to said supporting frame by pivotal arm means, the downwardly extending portion of each ground wheel support being inclined downwardly and rearwardly from said horizontal portion with respect to the normal direction of travel during transport, a horizontal beam support being connected to said frame and the ends of said beam support receiving said pivotal arm means.

Claim 32

A soil cultivating implement comprising an elongated, substantially rigid supportIng frame and a plurality of soil-working members rotatably mounted in a row on said frame, said frame extending substantially transverse to the direction of travel, driving means interconnecting said soil-working members and coupling means secured to said frame substantially centrally thereof for attachment at the rear of a prime mover for cultivating operation, towing means on said implement adjacent one end of said frame for detachably receiving a transport structure and said implement being connectable to said prime mover with said structure and positionable in a transport position in which the longitudinal axis of said frame is located generally parallel to the direction of travel, said towing means comprising a first mounting having quick release means that detachably receives transport ground wheels and supporting means for said wheels, said first mounting being located adjacent one end of said frame and said towing means including a second mounting that detachably receives a draw bar at the opposite end of said frame, said draw bar having a front end that is adjustably connected to a ground support, said ground support having foot plate means that normally rests on the ground, said supporting means for the ground wheels comprising two detachable ground wheel supports, each ground wheel support including a substantially horizontal portion that is fixable in place relative to said supporting frame and a downwardly extending portion that is connectable to said supporting frame by pivotal arm means, the downwardly extending portion of each ground wheel support being inclined downwardly and rearwardly from said horizontal portion with respect to the normal direction of travel during transport, a horizontal beam support being connected to said frame and the ends of said beam support receiving said pivotal arm means.