Tool mounting means for agricultural implements

Claim 2

An agricultural implement comprising: a. a frame; b. an elongated tubular member; c. a pair of arms connected to opposite ends of said tubular member and extending outwardly therefrom; d. an elongated gang of ground working tools mounted between the outer ends of said arms; e. an elongated shaft extending axially through said tubular member and rotatably supported on said frame at opposite ends of said tubular member; f. means pivotally mounting said tubular member on said shaft; g. a torsion bar acting between said shaft and said tubular member for biasing said ground working tools downwardly, said torsion bar being substantially contained within said tubular member; h. means acting between said frame and said shaft for rotating the latter and thereby raising and lowering said ground working tools; and i. stop means acting between said shaft and said tubular member for limiting the range of pivotal movement of said ground working tools.

Claim 3

An agricultural implement comprising: a. a frame; b. a first member pivotally mounted on said frame; c. a second member pivotally mounted on said first member; d. at least one arm connected to said second member and extending outwardly therefrom, said arm being pivotally movable with said second member; e. ground working tool means mounted on said arm for vertical mOvement therewith; and f. torsion spring means acting between said first and second members and contained substantially within one of said members for biasing said ground working tool means downwardly.

Claim 4

An agricultural implement comprising: a. a frame; b. a first member pivotally mounted on said frame; c. a second member pivotally mounted on said first member; d. at least one arm connected to said second member and extending outwardly therefrom, said arm being pivotally movable with said second member; e. ground working tool means mounted on said arm for vertical mOvement therewith; and f. torsion spring means acting between said first and second members and contained substantially within one of said members for biasing said ground working tool means downwardly.

Claim 5

The implement defined in claim 2 wherein the other of said members extends through said one member, and said torsion spring means acts between said one member and that portion of said other member contained within said one member.

Claim 6

The implement defined in claim 2 including stop means acting between said first and second members for limiting the range of pivotal movement of said second member relative to said first member, said stop means comprising a pair of upper and lower stops on one of said members, and a stop arm connected to the other of said members and engageable with said upper and lower stops.

Claim 7

The implement defined in claim 2 including means acting between said frame and said first member for rotating the latter and thereby raising and lowering said ground working tool means.

Claim 8

An agricultural implement comprising: a. a frame; b. a support rotatably mounted on said frame; c. at least one arm mounted on said support for vertical pivotal movement relative thereto; d. ground-working tool means mounted on said arm and movable vertically therewith; e. a torsion bar acting between said arm and said support for biasing said ground-working tool means downwardly; f. stop means acting between said arm and said support for limiting the range of pivotal movement of said arm relative to said support; and, g. means acting between said frame and said support for rotating the latter and thereby raising and lowering said ground-working tool means.

Claim 9

An agricultural implement comprising: a. a frame; b. a support rotatably mounted on said frame; c. at least one arm mounted on said support for vertical pivotal movement relative thereto; d. ground-working tool means mounted on said arm and movable vertically therewith; e. a torsion bar acting between said arm and said support for biasing said ground-working tool means downwardly; f. stop means acting between said arm and said support for limiting the range of pivotal movement of said arm relative to said support; and, g. means acting between said frame and said support for rotating the latter and thereby raising and lowering said ground-working tool means.

Claim 10

The implement defined in claim 12 wherein said spring means comprises a torsion bar.

Claim 11

The implement defined in claim 7 wherein said torsion bar is U-shaped; the legs of said U extending substantially parallel to the axis of said tubular member.

Claim 12

The implement defined in claim 12 wherein said support comprises an elongated shaft extending axially through said tubular member and rotatably mounted on said frame at opposite ends of said tubular member.

Claim 13

The implement defined in claim 12 wherein said stop means comprises a pair of upper and lower stops connected to said tubular member; and a stop arm connected to said support and extending outwardly therefrom, said stop arm being engageable with said stops.

Claim 14

An agricultural implement comprising: a. a frame; b. a support rotatably mounted on said frame; c. at least one arm mounted on said support for vertical pivotal movement relative thereto; d. ground working tool means mounted on said arm and movable vertically therewith; e. means acting between said support and said arm for limiting the range of pivotal movement of the latter relative to the former; f. spring means acting between said support and said arm for biasing said ground-working tool means downwardly; and, g. means acting between said frame and said support for rotating the latter and thereby raising and lowering said ground-working tool means.

Claim 15

An agricultural implement comprising: a. a frame; b. a support rotatably mounted on said frame; c. at least one arm mounted on said support for vertical pivotal movement relative thereto; d. ground working tool means mounted on said arm and movable vertically therewith; e. means acting between said support and said arm for limiting the range of pivotal movement of the latter relative to the former; f. spring means acting between said support and said arm for biasing said ground-working tool means downwardly; and, g. means acting between said frame and said support for rotating the latter and thereby raising and lowering said ground-working tool means.

Claim 16

An agricultural implement comprising: a. a frame; b. a support rotatably mounted on said frame; c. an elongated tubular member pivotally mounted on said support; d. at least one arm connected to said tubular member and extending outwardly therefrom; e. ground-working tool means mounted on said arm outwardly of said tubular member; f. spring means acting between said tubular member and said support for biasing ground-working tool means downwardly, said spring means being substantially contained within said tubular member; g. stop means acting between said tubular member and said support for limiting the range of pivotal movement of said tubular member relative to said support; and, h. means acting between said frame and said support for rotating the latter and thereby raising and lowering said ground-working tool means.

Claim 17

An agricultural implement comprising: a. a frame; b. a support rotatably mounted on said frame; c. an elongated tubular member pivotally mounted on said support; d. at least one arm connected to said tubular member and extending outwardly therefrom; e. ground-working tool means mounted on said arm outwardly of said tubular member; f. spring means acting between said tubular member and said support for biasing ground-working tool means downwardly, said spring means being substantially contained within said tubular member; g. stop means acting between said tubular member and said support for limiting the range of pivotal movement of said tubular member relative to said support; and, h. means acting between said frame and said support for rotating the latter and thereby raising and lowering said ground-working tool means.

Claim 18

An agricultural implement comprising: a. a frame; b. an elongated member having opposite end portions; c. means mounting the end portions of said elongated member on said frame for pivotal movement of said member about an axis extending in substantially the direction of elongation of said member; d. a pair of spaced arms connected to the end portions of said member and extending outwardly therefrom, said arms being vertically pivotal with said member relative to said frame and having outer end portions spaced outwardly from said member; e. an elongated gang of ground-working tools extending between and supported on the outer end portions of said arms for vertical movement therewith, the direction of elongation of said tool gang being substantially parallel to that of said elongated member; and, f. torsion spring means between said arms and elongated in substantially the direction of elongation of said tool gang, said spring means acting between said frame and said elongated member for biasing said tool gang downwardly, said support member being operative as a shield for said spring means to prevent foreign objects from obstructing the operation thereof.

Claim 19

An agricultural implement comprising: a. a frame; b. an elongated member having opposite end portions; c. means mounting the end portions of said elongated member on said frame for pivotal movement of said member about an axis extending in substantially the direction of elongation of said member; d. a pair of spaced arms connected to the end portions of said member and extending outwardly therefrom, said arms being vertically pivotal with said member relative to said frame and having outer end portions spaced outwardly from said member; e. an elongated gang of ground-working tools extending between and supported on the outer end portions of said arms for vertical movement therewith, the direction of elongation of said tool gang being substantially parallel to that of said elongated member; and, f. torsion spring means between said arms and elongated in substantially the direction of elongation of said tool gang, said spring means acting between said frame and said elongated member for biasing said tool gang downwardly, said support member being operative as a shield for said spring means to prevent foreign objects from obstructing the operation thereof.

Claim 20

The invention defined in claim 13 wherein said elongated member comprises a tubular member and said torsion spring means is substantially contained within said tubular member.

Claim 21

The invention defined in claim 13 wherein said torsion spring means is U-shaped and has leg portions elongated in substantially the direction of elongation of said tool gang.

Claim 22

An agricultural implement comprising: a. a frame; b. an elongated tubular member having opposite end portions; c. means mounting the end portions of said tubular member on said frame for pivotal movement of said member about an axis extending in substantially the direction of elongation of said member; d. a pair of spaced arms connected to the end portions of said tubular member and extending outwardly therefrom, said arms being vertically pivotal with said tubular member relative to said frame and having outer end portions spaced outwardly from said member; e. an elongated gang of ground-working tools extending between and supported on the outer end portions of said arms for vertical movement therewith, the direction of elongation of said tool gangs being substantially parallel to that of said tubular member; and, f. a U-shaped torsion spring between said arms and having legs elongated in substantially the direction of elongation of said tool gang, said torsion spring acting between said frame and said tubular member for biasing said tool gang downwardly and being substantially contained within said tubular member.

Claim 23

An agricultural implement comprising: a. a frame; b. an elongated tubular member having opposite end portions; c. means mounting the end portions of said tubular member on said frame for pivotal movement of said member about an axis extending in substantially the direction of elongation of said member; d. a pair of spaced arms connected to the end portions of said tubular member and extending outwardly therefrom, said arms being vertically pivotal with said tubular member relative to said frame and having outer end portions spaced outwardly from said member; e. an elongated gang of ground-working tools extending between and supported on the outer end portions of said arms for vertical movement therewith, the direction of elongation of said tool gangs being substantially parallel to that of said tubular member; and, f. a U-shaped torsion spring between said arms and having legs elongated in substantially the direction of elongation of said tool gang, said torsion spring acting between said frame and said tubular member for biasing said tool gang downwardly and being substantially contained within said tubular member.