CA1037765A

CA1037765A - Field cultivators

Info

Publication number: CA1037765A
Application number: CA287,618A
Authority: CA
Inventors: Amos F. Weber
Original assignee: AMOS WEBER FARM WAGONS
Current assignee: AMOS WEBER FARM WAGONS
Priority date: 1977-09-27
Filing date: 1977-09-27
Publication date: 1978-09-05

Abstract

ABSTRACT

The invention relates to an improved means for mounting ground cultivating tools to the frame of a field cultivating machine and comprises pairs of clamps, embracing bars forming the frame, and connected together with a one-piece rubber cushion between the clamps and the bars, each tool being connected to the clamps.

Description

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This invention relates to field cultivators and, more particularly, to an improved and less complicated means of mounting the ground cultivating tools associated therewith.
Such machines are known and one known type of machine has included a wheeled carriage supporting a cross-bar of square or rectangular cross-section on which the cultivating tools have been ~ounted. The mounting for each tool has consisted of a pair of clamping brackets supporting the upper ; part of the shank of the tool and embracing the cross-bar.
The brackets have been bottled together and are spaced from the cross-bar by four rubber cushions. The purpose of such an arrangement has been to cushion the shock, should a tool strike an obstruction in the ground, and to allow the upper part of the shank and the brackets some degree of movement relative to the cross-bar.
However, the disadvantage with this arrangement has been that dirt has entered (and built up~ in the spaces existing between the r~bber cushions so that the latter have not operated to ;~
full 100% efficiency. Additionally too, when a worn cushion ' 20 has had to be replaced, the amount of time consumed in positioning four cushions has been very costly. It is the object of this invention, therefore, to overcome these disadvantages.
Accordingly, the present invention relates to a field cultivator, including a wheeled carriage supporting at least one cross-bar of substantially quadrilateral cross-section extending transversely across the carriage, a pair of clamping brackets detachably connected together and embracing said bar with a ground cultivating tool adjustably connected to one of said brackets, and cushioning means intermediate said bar and said clamps, the 3~ ~3 - 1 - ~

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improvement comprisincJ a resilien~ one-piece cushion totally surrounding that portion of the bar embraced by the brackets and substantially occupying all oE the space between said brackets and said bar thereby inhibiting the introduction of ; foreign matter between said brackets and said cushion and the latter and the bar while permitting said tool a relative resilient resisted movement in all directions without twisting or distortion.
The invention is illustrated, by way of example, in the accompanying drawing in which:
Figure 1 is a diagrammatic transverse section taken through the cultivator; and Figures 2 and 3 are detail views.
The field cultivator shown diagrammatically in Figure 1 has ; a wheeled carriage supporting a framework of cross~bars 1 (only one being shown here~ of quadrilateral cross-section.
The upper and lower faces of the cross-bar 1 are shown as being substantially parallel with the surface of the ground in - order to give greater support to the frame or carriage although it will be quite obvious that they could be arranged at an angle of,say, 45 degrees to the ground.
The shank 2 of each cultivating tool 3 is mounted on the cross-bar 1 by means of a pair of substantially U-shaped brackets 4 adapted to embrace said bar and to be detachably secured together as at 5 by nuts and bolts. Located intermediate the brackets 3 and the bar 1 however, is a one-piece mount or cushion - 6 (preferably moulded from urethane rubber) which is slidden along the bar in the first instance prior to the brackets being disposed about said bar 1.
As will be more clearly seen from Figure 2, the cushion 6 totally surrounds that portion of the cross-bar 1 embraced by ., . - .. . . . .
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' ~ , ,' ~ ' :., lQ3771~5 the brackets 4 and subs-tantially occupies all of the space between said brackets and the bar thereby inhibiting the introduction of foreign matter, such as earth, between the brackets and -~ cushion and between the latter and the bar while permitting each tool a relative resilien-t resisted movement in all directions without twisting or distortion.

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Claims

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:-

1. In a field cultivator, including a wheeled carriage supporting at least one cross-bar of substantially quadrilateral cross-section extending transversely across the carriage, a pair of clamping brackets detachably connected together and embracing said bar with a ground cultivating tool adjustably connected to one of said brackets, and cushioning means intermediate said bar and said clamps, the improvement comprising a resilient one-piece cushion totally surrounding that portion of the bar embraced by the brackets and substantially occupying all of the space between said brackets and said bar thereby inhibiting the introduction of foreign matter between said brackets and said cushion and the latter and the bar while permitting said tool a relative resilient resisted movement in all directions without twisting or distortion.

2. The improvement of Claim 1 wherein the upper and lower faces of the bar extend substantially parallel with the ground and the brackets are substantially U-shaped.

3. The improvement of Claims 1 and 2 wherein the cushion is moulded from urethane rubber.