AU601880B2

AU601880B2 - Improved land roller

Info

Publication number: AU601880B2
Application number: AU24082/88A
Authority: AU
Inventors: Max Albert Leske
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-10-20
Filing date: 1988-10-20
Publication date: 1990-09-20
Anticipated expiration: 2008-10-20
Also published as: AU2408288A

Description

COMMONWEALTH OF AUSTRf Patents Act 1952-196980Fom1 COMPLETE SPECIFICATION

(ORIGINAL)

FOR OFFICE USE* Class Ini. Class Application Number Lodged Complete Application No, Specification Lodged Published PrI1,'rIty: Related art: -tilis d(Xumcflt conintfs thei an':]Jdmtts 1 'laA uu~..r Se-ftioi 49 wtnd is ou llc hr Name of Applicant: Address of Applicant: Actual lnve,:tor: TO BE COMPLETED BY APPLICANT MAX ALBERT LESKE SHEQAK LOG, STATE OF SOUTH AUSTRALIA, COMMONWEALTH OF AUSTRALIA MAX ALBERT LESKE Address for Service: COLLISON CO., Ptitent Attorneys, lt''Vigmbe.Adelaide, South Aust=clia. e-U0 -,omplete Specification for the Invention entitled-.

"IMPROVED LAND ROLLER" The following statement is a full description of this Invention, Including the best method of performlo-g It Knlown to me: 1 0/e8 I WAENT, TR~ADE 41AgIS &DESIGNS MI~OpCE SOUTH AUGZA!~J,\ 2 This invention relates to an improved land rolling implement, more particularly for a roller for the rolling of light and sandy soils.

The rolling of light and sandy soils is fairly common, the roller usualiy comprising three rollers, a central forward roller, and two trailing rollers, one on each side and situated behind the central ro;ler. With another form of roller there is a central roller, and there are provided two side rollers each situated forwardly of the central roller.

However, with the'se forms of rollers, while they are satisfactory when travelling in a straight line, when turning a corner, the rollers do not roll cleanly on the o ro° ground but tend to scrub and move sideways due to the fact that the rollers do not turn about the centre of rotation of the implement.

0 00 040ool It is an object of this Invention 'o provide a land roller machine comprising a plurality of rollers which will overcome the above problem.

0 no Thus there Is provided according to the invention a land rolling implement, the implement comprising a central framework, a drawbar connected to the central framework, and three rollers, a central roller and two side rollers, one 0o00 positioned on each side of the central roller and connected to the central framework, the dimensions of the rollers and the forward position of the end of the drawbar being such that outer ends of the side rollers and the drawbar end are on the same imaginary circle having its centre at the centre of the central roller.

^oo. In order to more fully describe the invention reference will now be made to the accompanying drawings in which: FIG. 1 is a diagrammatic plan view of the implement according to the invention, FIG. 2 is a view showing the implement in one position, and FIG, 3 shows the implement in a further position.

L i 4' 3 Referring to FIG. 1, the roller 1 comprises a central roller 2, a forward side roller 3 and a rearward side roller 4. The roller 2 is mounted in its frame 5 to which is attached a draw bar 6 having a draw bar attachment point 7.

The side rollers 3 and 4 also have their side frames 8 and 9, these being attached by further frames 10 and 11 to the frame 5 of the central roller.

It will be seen that in a preferred form of the invention, the outer ends of the side frames 8 and 9, that is, the point of attachment of the respective axles supporting the rollers 3 and 4 to the side frames 8 and 9, and also the drawbar attachment point 7 are on the circumference of an imaginary circle having its centre 12. Thus it will be seen that when the roller unit has to turn a corner, all portions of the rollers would rotate about the centre 12, one side roller moving 1 5 forwardly and the other side roller rolling backwardly about the centre point 12.

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2 It wii be realized that preferably, according to the invention, the outer ends of the axles of the side rollers 3 and 4 where they are mounted in the respective side frames 8 and 9 and the draw bar point are on the same imaginary circle having its centre at the centre of the central roller, and thus if desired, the two side rollers could be positioned either rearwardly or forwardly of the central roller,

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However it is preferred that the rollers be positioned one forwardly and one S 25 rearwardly of the central roller so that then the rollers can be raised and positioned above the central roller for transport to reduce the width of the unit, Thus as shown in FIGS. 2 and 3, the side rollers are provided with the lifting frame 13, and the central roller is provided with a forward and rearward cradle 14, hydraulic rams 15 being provided acting between each of the lifting frame 13 and the central framework 16 to lift the rollers to rest the rollers on l~ the supporting cradles 14, The framework 16 for the central roller is provided With transport wheels 17, and for transport these are hydraulically lowered by rams (not shown) to engage the ground and then lift the rolling unit above the ground for transport purposes.

I 4 The lifting frames 13 are pivoted to a lifting member 18 which in turn is pivoted at 19 to the central frame 16, the ram 15 acting between the lifting member 18 and the central frame 16.

The particular form of lifting mechanism and supporting of the rollers in the transport position is not essential to the invention, the inventive concept in this aspect being the arrangement of the rollers and the draw bar for efficient turning of the implement.

Although one form of the invention has been described in some detail it is to be realized that the invention is not to be limited thereto but can include various modifications falling within the spirit and scope of the invention.

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Claims

1. A land rolling implement, the implement comprising a centra' framework, a drawbar connected to the central framework, and three rollers, a central roller and two side rollers, one positioned on each side of the central roller and connected to the central framework, the dimensions of the rollers and the forward position of the end of the drawbar being such that outer ends of the side re lers and the drawbar end are on the same imaginary circle having its centi at the centre of the central roller.

2. A land rolling implement as defined in claim 1 wherein one side roller is S positioned forwardly of the central roller and the other side roller is positioned rearwardly of the central roller, 1 5

3. A land rolling implement as defined in claim 2 wherein each of the side rollers is connected to the central framework by means whereby each roller may be lifted and positioned on a cradle supported by the central framework.

4, A atnd rolling Implement as defined in clam 3 wherein each side roller is supported by a side frame, each side frame having a lifting frame pivoted to a lifting member pivoted to the central framework and a hydraulic ram acting between each lifting member and the central framework whereby each roller may be lifted and positioned on Its respective cradle for transport purposes.

5. A land rolling implement as defined in any one of the preceding claims wherein transport wheels are provided at the end of the central framework, Shydraulic rams connecting said wheels to the respective end of the central framework, whereby the central framework and central roller can be raised for transport purposes.

6. A land rolling implement substantially as hereinbefore described with reference to the accompanying drawings, DATED this 5th day of June 1990 MAX ALBERT LESKE By his Patent Attorneys COLLISON CO