Seedbed preparation implement having rotary disc with adjustable gang angle

Abstract

A disc gang is provided that is suitable for use as part of a multifunctional seedbed preparation implement or in a standalone disc harrow. The disc gang is configured to permit a gang angle of the disc gang to be adjusted to accommodate differing soil conditions and / or to obtain different tillage characteristics. The disc gang may include a frame mounted on a mainframe of a primary tillage implement such as a cultivator. The frame includes a main beam mounted on the implement's mainframe and a disc support beam connected to the main beam and supporting a plurality of rotating discs. The gang angle can be infinitely adjusted through a designated range by pivoting one end of the disc gang about a vertical pivot axis while permitting another end portion of the disc gang to slide along a support surface for that end. The disc support beam may also be configured to be raised and lowered relative to the main beam so as to permit the cutting depth of the discs to be adjusted independently of the working depth of the remainder of the implement. The disc gang preferably is modular so as to negate the need for complex mechanical and hydraulic connections between the disc gang and the remainder of the implement.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation of and claims priority to pending U.S. application Ser. No. 10 / 624,237, filed on Jul. 22, 2003, which is a divisional of U.S. application Ser. No. 09 / 992,142 filed on Nov. 6, 2001, and wherein the entirety of both is hereby incorporated herein by reference in their entirety.FIELD OF THE INVENTION [0002] The invention relates to seedbed preparation implements and, more particularly, relates to a disc gang usable, e.g., on a multifunctional seedbed preparation implement and having an adjustable gang angle. BACKGROUND OF THE INVENTION [0003] An increasing number of seedbed preparation implements are configured to till the soil, level it, and / or break up lumps in a single pass so as to minimize the number of passes required to prepare a field for planting. Implements of this general type are sometimes known as “multifunctional seedbed preparation implements.” Multifunctional seedbed implementation implemen...

AI Technical Summary

Benefits of technology

"The invention is a multifunctional seedbed implement that includes a disc gang with adjustable angle. The implement includes a cultivator and a disc harrow. The cultivator has a mainframe and ground engaging plow shanks. The disc harrow has a disc support beam, ground engaging discs, and a main beam. The main beam is pivotably mounted on the mainframe and is movable relative to the frame to adjust the angle. The discs are pivotable to raise and lower the disc support beam to adjust the cutting depth. The invention allows for adjustable angle of the discs to improve soil preparation and crop yield."

Problems solved by technology

However, no heretofore known multifunctional seedbed preparation implement employed disc gangs with adjustable gang angles.

This lack is believed to result from impracticalities resulting from the ways in which these machines were constructed and operated.

The gang angles of some standalone disc harrows are adjustable, but adjustment is typically either difficult or imprecise.

As a result of this configuration, the gang angle cannot be adjusted “infinitely”, i.e., continuously within the range of gang angle adjustment.

The resultant configuration has relatively low flexibility and versatility.

It is also poorly suited for adaptability to disc gangs used in a Combo Mulch Finisher or any other multifunctional seedbed preparation implement.

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