초록 ▼

A winged implement includes an hydraulic control circuit having two operator-controlled valves, including a work valve and a transport valve. Using only these controls, and without leaving the tractor cab, the operator can (1) fold the implement for transport; (2) unfold the wings; (3) place the imp

A winged implement includes an hydraulic control circuit having two operator-controlled valves, including a work valve and a transport valve. Using only these controls, and without leaving the tractor cab, the operator can (1) fold the implement for transport; (2) unfold the wings; (3) place the implement in the field use position with substantial constant down pressure on the wings; and (4) raise the wings and center section to an intermediate position with the wings inclined upwardly for end row turns.

대표청구항 ▼

A winged implement includes an hydraulic control circuit having two operator-controlled valves, including a work valve and a transport valve. Using only these controls, and without leaving the tractor cab, the operator can (1) fold the implement for transport; (2) unfold the wings; (3) place the imp

A winged implement includes an hydraulic control circuit having two operator-controlled valves, including a work valve and a transport valve. Using only these controls, and without leaving the tractor cab, the operator can (1) fold the implement for transport; (2) unfold the wings; (3) place the implement in the field use position with substantial constant down pressure on the wings; and (4) raise the wings and center section to an intermediate position with the wings inclined upwardly for end row turns. verse to the longitudinal axis, the tank edges facing a common direction; an elongated header piece including a pair of spaced longitudinally extending header-edges and a header wall extending from one of the header edges to the other to define a cross-sectional shape for the header piece transverse to the longitudinal axis, the header edges facing a direction opposite the common direction; at least one of the tank and header pieces further including at least two embossed beads spaced along the longitudinal axis in the wall adjacent the edges of the at least one of the tank and header pieces, each embossed bead having a terminal end spaced from one of the edges of the at least one of the tank and header pieces and facing the other of the tank and header pieces, each of the terminal ends having an opening therein; at least one of the tank and header pieces further including a plurality of tabs spaced along the longitudinal axis in each of the edges of the at least one of the tank and header pieces and extending toward the other of the tank and header pieces to engage in the opening in the terminal ends of the embossed beads. 2. The elongated manifold construction of claim 1 wherein the embossed beads are in the tank wall and the tabs are in the header edges. 3. The elongated manifold construction of claim 1 wherein the embossed beads are in the header wall and the tabs are in the tank edges. 4. The elongated manifold construction of claim 1 wherein at least one of the embossed beads comprises a pair of terminal ends, with one of the pair of terminal ends being the terminal end with the opening and the other of the pair of terminal ends located adjacent the same edge as the terminal end with the opening. 5. The elongated manifold construction of claim 4 wherein the other of the pair of terminal ends is free of any openings. 6. The elongated manifold construction of claim 1 wherein at least one of the embossed beads comprises a pair of terminal ends, with one of the pair of terminal ends located adjacent one of the edges of the at least one of the tank and header pieces and the other of the pair of terminal ends located adjacent the other of the edges of the at least one of the tank and header pieces, the at least one of the embossed beads extending across the wall from one of the pair of terminal ends to the other of the pair of terminal ends, each of the pair of terminal ends having one of the openings receiving one of the tabs. 7. The elongated manifold construction of claim 1 wherein at least one of the embossed beads protrudes outwardly into an exterior space surrounding the manifold construction. 8. The elongated manifold construction of claim 1 wherein at least one of the embossed beads protrudes into an interior volume of the manifold construction. 9. The elongated manifold construction of claim 1 wherein at least one of the tabs is located in a recess formed in one of the edges of the at least one of the tank and header pieces. 10. The elongated manifold construction of claim 1 wherein the cross-sectional shape of at least one of the header and tank pieces is U-shaped. 11. An elongated manifold construction having a longitudinal axis for a heat exchanger having a plurality of tubes extending from the manifold construction, the manifold construction comprising: an elongated tank piece including a pair of spaced longitudinally extending tank edges and a tank wall extending from one of the tank edges to the other to define a cross-sectional shape for the tank piece transverse to the longitudinal axis, the tank edges facing a common direction, the tank piece further including at least two embossed beads in the tank wall spaced along the longitudinal axis adjacent the tank edges, each embossed bead having a terminal end spaced from one of the tank edges and facing the common direction, each of the terminal ends having an opening therein; an elongated header piece having a pair of spaced longitudinally extending heade r edges and a header wall extending from one of the header edges to the other to define a cross-sectional shape for the header piece transverse to the longitudinal axis, the header edges facing a direction opposite the common direction, the header piece further including a plurality of tabs spaced along the longitudinal axis in each of the header edges and extending toward the tank piece to engage in the opening in the terminal ends of the embossed beads. 12. The elongated manifold construction of claim 11 wherein at least one of the embossed beads comprises a pair of terminal ends with one of the pair of terminal ends being the terminal end with the opening and the other of the pair of terminal ends located adjacent the same tank edge as the terminal end with the opening. 13. The elongated manifold construction of claim 12 wherein the other of the pair of terminal ends is free of any openings. 14. The elongated manifold construction of claim 11 wherein at least one of the embossed beads comprises a pair of terminal ends, with one of the pair of terminal ends located adjacent one of the tank edges and the other of the pair of terminal ends located adjacent the other tank edge, the at least one of the embossed extending across the wall from one of the pair of terminal ends to the other of the pair of terminal ends, each of the pair of terminal ends having one of the openings receiving one of the tabs. 15. The elongated manifold construction of claim 11 wherein at least one of the embossed beads protrudes outwardly into an exterior space surrounding the manifold construction. 16. The elongated manifold construction of claim 11 wherein at least one of the embossed beads protrudes into an interior volume of the manifold construction. 17. The elongated manifold construction of claim 11 wherein at least one of the tabs is located in a recess formed in one of the header edges. 18. The elongated manifold construction of claim 11 wherein the cross-sectional shape of at least one of the header and tank pieces is U-shaped. 19. The elongated manifold construction having a longitudinal axis for a heat exchanger having a plurality of tubes extending from the manifold construction, the manifold construction comprising: an elongated tank piece including a pair of spaced longitudinally extending tank edges and a tank wall extending from one of the tank edges to the other to define a cross-sectional shape for the tank piece transverse to the longitudinal axis, the tank edges facing a common direction; an elongated header piece having a pair of spaced longitudinally extending header edges and a header wall extending from one of the header edges to the other to define a cross-sectional shape for the header piece transverse to the longitudinal axis, the header edges facing a direction opposite the common direction; the header piece further including at least two embossed beads in the header wall spaced along the longitudinal axis adjacent the header edges, each embossed bead having a terminal end spaced from one of the header edges and facing a direction opposite to the common direction, each of the terminal ends having an opening therein; and the tank piece further including a plurality of tabs spaced along the longitudinal axis in each of the tank edges and extending toward the header piece to engage in the opening in the terminal ends of the embossed beads. 20. The elongated manifold construction of claim 19 wherein at least one of the embossed beads comprises a pair of terminal ends with one of the pair of terminal ends being the terminal ends with the opening and the other of the pair of terminal ends located adjacent the same header edge as the terminal end with the opening. 21. The elongated manifold construction of claim 20 wherein the other of the pair of the terminal ends is free of any openings. 22. The elongated manifold construction of claim 19 wherein at least one of the embossed beads protrudes outwardly into an exterior s pace surrounding the manifold. 23. The elongated manifold construction of claim 19 wherein at least one of the embossed beads protrudes into an interior volume of the manifold construction. 24. The elongated manifold construction of claim 19 wherein at least one of the tabs is located in a recess formed in one of the tank edges. 25. The elongated manifold construction of claim 19 wherein the cross-sectional shape of at least one of the header and tank pieces is U-shaped. 26. The elongated manifold construction having a longitudinal axis for a heat exchanger having a plurality of parallel tubes extending from the manifold construction, the manifold construction comprising: an elongated tank piece including a back wall and two tank side walls extending from each side of the back wall to define a U-shaped cross-section transverse to the longitudinal axis, the tank piece including at least two embossed beads spaced along the longitudinal axis, each embossed bead having a pair of terminal ends and extending across the back wall and partially down each of the tank side wall to each of the terminal ends, each of the terminal ends having an opening formed therein; an elongated, header piece having a tube receiving wall and two header side walls extending from each side of the tube receiving wall to define a U-shaped cross-section transverse to the longitudinal axis, each of the header side walls having a plurality of the tabs spaced along the longitudinal axis and extending away from the tube receiving wall to engage in the opening in the tank piece. 27. The elongated manifold construction of claim 26 wherein at least one of the embossed beads protrudes outwardly into an exterior space surrounding the manifold construction. 28. The elongated manifold construction of claim 26 wherein at least one of the embossed beads protrude into an interior volume of the manifold construction. 29. The elongated manifold construction of claim 26 wherein at least one of the tabs is located in a recess formed in one of the header side walls.