Soil-cultivating implements

Claim 2

A soil cultivation implement comprising a frame, movable over the ground in a first direction of travel, a rotary shaft journaled in said frame to extend substantially transversely of the direction of travel of said implement, a plurality of soilworking members mounted on said rotary shaft, driving means on said implement for rotating said shaft and for moving said working members forwardly through the soil in the direction of travel, a hood comprising sieve means mounted on said frame to extend above said working members and to the rear of said rotary shaft, said sieve means being positioned above the path of said soil-working members during rotation thereof, and extending, at least in part, generally concentric to said shaft, a further hood mounted on said implement to substantially overlie said firstmentioned hood, said further hood being pivotably connected to said frame at a point which lies, as seen from above, in front of the axis of rotation of said working members, the trailing end of said further hood being positionable to contact the ground during operation whereby soil is thrown upwardly against said hoods, deposited in several layers and thereafter smoothed by said trailing end.

Claim 3

A soil-cultivating implement as claimed in claim 1, wherein said driving means includes a gear mechanism connected to said rotary shaft for transmitting rotary action to same, said mechanism including an adjustable unit for rotating said shaft in both directions whereby said soil-working members are moved through the soil in either direction and soil is thrown upwardly against said hoods with fine soil passing through said sieve means.

Claim 4

An implement as claimed in claim 2, wherein said adjustable unit includes a lever movable to connect either one of two alternative pinions to a drive shaft of said driving means, said two alternative pinions being in mesh with a further pinion connected to an output shaft of said mechanism.

Claim 5

An implement as claimed in claim 3, wherein said driving means includes variable transmission means to change the transmission ratio between said drive shaft and said rotary shaft carrying said soil-working members.

Claim 6

An implement as claimed in claim 1, wherein said soil-working members are pivotable about axes which extend parallel to the axis of said shaft and each soil-working member is turnably mounted between two supports secured to said rotary shaft in relatively spaced relationship.

Claim 7

An implement as claimed in claim 4, wherein frictional arresting means is associated with said soil-working members for braking their pivotal movements about their pivotal axes.

Claim 8

An implement as claimed in claim 1, wherein said sieve means comprises an assembly of relatively spaced rods which extend to the rear of said implement, each of said rods being at least partly concentrically curved with respect to the axis of said shaft.

Claim 9

A soil-cultivating implement as claimed in claim 1, wherein a ground wheel with support is secured to said implement, said support comprising an adjustable assembly whereby the working depth of said soil-working members can be altered.

Claim 10

A soil-cUltivating implement comprising a frame, a rotary shaft journaled in said frame to extend substantially transversely of the direction of operative travel of said implement, a plurality of soil-working members mounted on said rotary shaft, driving means on said implement for rotating said shaft and for moving said working members through the soil in the direction of travel, a hood comprising sieve means mounted on said frame to extend above said working members and to the rear of said rotary shaft, said sieve means being positioned above the path of said soil-working members during rotation thereof, and extending, at least in part, generally concentric to said shaft, a further hood mounted on said implement to substantially overlie said first-mentioned hood, said further hood being supported on said frame to pivot at a point which lies, as seen from above, in front of the axis of rotation of said working members, the trailing end of said hood being positionable to ride on the ground during operation whereby soil is thrown upwardly against said hoods, deposited in several layers and thereafter smoothed by said trailing end, said frame having coupling means for connection to a prime mover and said driving means including an input shaft connectable to the power takeoff of the prime mover.

Claim 11

A soil-cUltivating implement comprising a frame, a rotary shaft journaled in said frame to extend substantially transversely of the direction of operative travel of said implement, a plurality of soil-working members mounted on said rotary shaft, driving means on said implement for rotating said shaft and for moving said working members through the soil in the direction of travel, a hood comprising sieve means mounted on said frame to extend above said working members and to the rear of said rotary shaft, said sieve means being positioned above the path of said soil-working members during rotation thereof, and extending, at least in part, generally concentric to said shaft, a further hood mounted on said implement to substantially overlie said first-mentioned hood, said further hood being supported on said frame to pivot at a point which lies, as seen from above, in front of the axis of rotation of said working members, the trailing end of said hood being positionable to ride on the ground during operation whereby soil is thrown upwardly against said hoods, deposited in several layers and thereafter smoothed by said trailing end, said frame having coupling means for connection to a prime mover and said driving means including an input shaft connectable to the power takeoff of the prime mover.