AU6996474A - Agricultural implement - Google Patents

Description

MICROCOPY RESOLUTrION TESTCHART NATIONAL OFSTANOARDS-1963 BUREAU

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COMMONWEALTH OF AUSTRALIA

The Patents Act, 1952 19 r 699 6 4/74

I/We, PETER GILBERT WARLD

i I.2 of "Tatiara"l, Coomberdale, in the State of Western Australia, Commonwealth of Australia,

hereby apply for the grant of a Patent for an invention entitled:

"Improvements in Ploughs"

which is described in the accompanying provisional specif-ication. G=4"te

This-applcaon&-a-C.enUGn- pcatinaedthe-bari-applikacatin() for-a-Patent--or-similar-protec-tiont- ident4ied-b--*umber--cuntry, aind iigd as ffolumws

My/ow~ address for Service is Care of:- R.C. Wray Associates, London House, 214 St. George's Terrace, Perth, Western Australia. 6000

DATED this e ighth day of June 1973 PETER GILBERT WARD

by 2 JUN 1973 His liet orney. 1VNT OFFICE

To the Commissioner of Patents, Commonwealth of Australia.

COMMONWEALTH OF AUSTRALIA Patents Act 1952-19 69

DECLARATION IN SUPPORT OF A APPLICATION FOR A 69 996 4 174 PATENT OR.PATENT OV ADDITION In support of the application made for a patent for an invention entitled paWot-f-addtson "Improvements in Ploughs"

PETER GILBERT WARD, of "Tatiara" Coomberdale, in the State of Western Australia, Commonwealth of Australia,

do solemnly ard sincerely declare as follows

I. I am the applicant for the patent p_&efft"46iden

1 am autk04Ze44).Y_ Ltiheapp]cant

forhtt tpaeknt hsdelaratio-on-its-behalf. pait-of-addition The-basicapplicationa.n define by ionA4LnftheAc. 'e in on.Itw dayf- 19 by_

3. 1am the actual inventor of the invention refeued-*4he-U-basit pp at4o-tn (or-wher*oienot4hern-the4nvnta s-ths_-Waant)

l-am-eteiied is the actual inventor-of-the-invention-and-the-facts-upo--which td is-entit-le4- to make the -application-are-as-follows t

4. The basic-application -re ferred-o-in-paragraph-o f-this-Declara tion-wat he firsapplica tir,-madein.a Conventi orT country- in-respect-of the-inverttion-the subject-of-the-appl ication.

Declared at this day of ,19 1]

(Signatureof Declarant.)

THE COM MISSIONEWOF-PATINTS.

COMMONWEALTH OF AUSTAUtA--- MtN PATENTS ACT 1952-1969

COMPLETE SPECIFICATION (ORIGINAL) FOR OFFICE USE

Application Number: 'qq o14- class 53 0 "f Lodged:l2t h June 197 3. ,30 3 3o--7.

CopeeSpecification-Lodged: CoplteAoeeped: 7 C (W Published: /r l Priority: IL

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Related Art: hulk,

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TO BE COMPLETED BY APPLICANT Name of Applicant: PETER GILBERT WARD

Addr-ass of ApoRlicant: "tTatiara"l, Coomberdale, in the State of' Western Australia, Commonwealth of' Australia. Actual Inventor: PETER GILBERT WARD r-i- AUZVhALIAN, Address for Service: R.C. Wray Associates, London House, 214 St. George's Terrace, 10JUJN 10411 Perth, W.A. 6000) ITFNT C'r' "1

Complete Specification for the invention entitled: "lImprovements in Ploughs"

The following statement isa full description of this invention, including the best method of performing it known to me

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THIS INVENTION relates to improvements in ploughs and the

like.

Throughout the specification the term plough is to be taken

to include any agricultural implement having a main beam

which supports a number of ground engaging members and an

end beam pivotally mounted at one end of the main beam.

The object of the invention is to provide a plough in which the width of cut can be readily varied according to the

nature of the ground being ploughed by utilizing the

10 existing hydraulic system.

"0 *0 In one form the invention resides in a plough comprising a e*°

main beam on which discs or the like are mounted and an

end beam pivotally mounted at one end of the main beam and

hydraulic means for raising and lowering the main beam with respect to the ground, a hydraulic ram connected between

the end beam and the main beam, the hydraulic ram being

coupled into the hydraulic raising and lowering circuit_,jo that the end beam may be rotated with respect to the main

beam to vary the width of cut.

20 The invention will be better understood by reference to the

following description of one specific embodiment. The

description is made with reference to the accompanying

drawings:-

Fig. 1 is a plan view of a portion of a plough support frame; and

Fig. 2 is a sectional view through the end beam along liae 2-2.

2- -2 10JUN 1,. PATiNr OFFICr

The embodiment is directed to a conventional plough having

a main beam 11 upon which a plurality of discs are mounted

on stump jump arms. The forward end of the main beam 11 is

supported on a wheel generally referred to as the front

furrow wheel. The rear end of the main beam is pivotally

connected at 13 to an end beam 15 for rotation about a

substantially vertical axis. The forward end of the end

beam is supported on a wheel referred to as the land wheel

whilst the rear end of the end beam is supported on a wheel

generally referred to as the rear furrow wheel. Each wheel

is provided with a hydraulic ram so that the main beam can

be raised or lowered with respect to the ground to lift

the discs clear of the ground, and vary the depth of cut or

lower the discs into ground contact. A connecting link 17

SO pivotally attached at 19 to the main beam and is slidably

engaged in a double sided channel member 20 moun ed on the

end beam parallel with its longitudinal axis. A hydraulic

ram 22 is pivotally connected between the main beam and 4nd

beam so that it functions in substantially the same direction

as the connecting link 17. The double sided channel member

has a series of holes 24 therein which are intended to receive

two pins. The sliding portion 26 of the connecting link is

slidably mounted between the two pins. The pins serve as

limiting means to control the degree of movement of the

sliding portion 26. The hydraulic ram hereinafter called the

width of cut ram is connected to the hydraulic circuit which

controls the height of the plough.

In use stop pins are set in the desired position in the double sided channel member 20. The connection of the width of cut ram is incorporated into the hydraulic circuit such that as the discs are lowered so the width of cut is reduced

When the plough enters softer soil the operator operates

the hydraulic controls such that the width of cut is increased,

because the force required to change the position of the

end beam is much less than the force required to lift the

discs clear of the ground and so the width of cut ram pushes

the end beam outwardly ho increase t width of cut. When the plough reaches harder ground the operation is reversed.

When the plough is to be transported the width of cut ram

brings in the end beam to the minimum width of cut position

before the discs are lifted clear ofthe ground thus sim-

plifying the operation.

The connecting link need not take tbe exact form described.

It may have one end slidably mounted on the main beam and the other end pivotally mounted on the end beam. Altern-

atively it may be of variable length and be pivotally mounted

on both the main beam and the end beam.

20 It will be appreciated that the scope of the invention need not be limLited to the particular features and combination

of features prescribed in the embodiment. e

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Claims (4)

The claims defining the invention are as follows:-

1. A plough comprising a main beam on which discs or the

like are mounted and an end beam pivotally mounted at one

end of the main beam and hydraulic means for raising and

lowering the main beam with respect to the ground, a hydraulic ram connected between the end beam and the main beam, the hydraulic ram being coupled into the hydraulic raising and

lowering circuit so that the end beam may be rotated with

respect to the main beam to vary the width of cut.

2. A plough as claimed in claim 1 wherein a connecting link is provided between the main beam and end beam, one

end being pivotally mounted upon the main beam and the other

end slidably engaged on the end beam to be slidable long- itudinally thereon.

3. A plough as claimed in claim 1 wherein a connecting link is provided between the main beam and end beam, one end being

pivotally mounted upon the end beam and the other end

slidably engaged on the end beam to be slidable longitudinally thereon. m caecti cc

4. A plough as claimed in claim 1 wherein a connecting *o0

link of variable length is provided between the main beam

and end beam.

A plough as claimed in claim 1 or claim 2 or claim 3 wherein the degree of freedom of the connecting links is

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controlled by stop pijbs providing limits to the extent of movement of the connecting link.

6. A plough substantially as herein dea-cribed with reference to the accompanying drawings.

DATED this fourth day of June, 1974.

PETER GILBERT WARD Ap]2licant

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S S R.C. WRAY ASSOCIATES, Perth, Western Australia, Patent Attorneys for Applicant.

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