WO1992019094A1 - Improvements in and relating to agricultural points and a method for forming the same - Google Patents

Improvements in and relating to agricultural points and a method for forming the same Download PDF

Info

Publication number
WO1992019094A1
WO1992019094A1 PCT/AU1992/000202 AU9200202W WO9219094A1 WO 1992019094 A1 WO1992019094 A1 WO 1992019094A1 AU 9200202 W AU9200202 W AU 9200202W WO 9219094 A1 WO9219094 A1 WO 9219094A1
Authority
WO
WIPO (PCT)
Prior art keywords
extending
insert section
earth engaging
body portion
implement
Prior art date
Application number
PCT/AU1992/000202
Other languages
French (fr)
Inventor
David Gerald Pearsall
Original Assignee
David Gerald Pearsall
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by David Gerald Pearsall filed Critical David Gerald Pearsall
Publication of WO1992019094A1 publication Critical patent/WO1992019094A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B15/00—Elements, tools, or details of ploughs
    • A01B15/02—Plough blades; Fixing the blades
    • A01B15/04—Shares

Definitions

  • THIS INVENTION relates to earth engaging implements such as agricultural points for ground working implements such as scarifiers, cultivators and seeding combines.
  • Agricultural points commonly in use are subject to abrasive wear, and thus require to be replaced regularly resulting in lost time and increased costs. Additionally, it is important in the design of an efficient agricultural point that the energy required to move the point through the soil is minimised and the amount of soil moved by the point is maximised. This becomes particularly important, when a larg'e number of such agricultural points are towed behind an agricultural machine, such as a tractor, as highly efficient points will allow a larger number to be towed by a tractor, thereby, improving the efficiency of the system.
  • wear strips are normally disposed at the nose and along the leading edges of the lateral wing portions of the point, and are usually formed of metal which has been specially toughened and hardened to minimise the abrasive effect of the soil thereon.
  • an earth engaging implement such as an agricultural point, which possesses improved wear resistance and is more efficient in soil displacement.
  • an earth engaging implement comprising: a body portion having a leading pointed end, laterally extending wing portions and a rear recessed end, the pointed end and area adjacent to the pointed end being provided with a cut out portion extending from the leading tips of the pointed end inwardly along the body portion; and an insert section located in the cut out portion, the insert section comprising an upstanding portion which presents an upwardly and rearwardly extending leading edge.
  • the upstanding portion comprises a flange provided on the insert section.
  • the insert section is configured to substantially fill the cut out portion.
  • the metal insert is formed from an elongate section comprising a first upstanding flange portion extending along the length of the section, and a second and third flange portion secured to the base of the first flange portion, and extending laterally outwards, wherein the outer edges of the second and third flange portions are secured to the inner edge of the cut out portion in the body of the earth engaging implement.
  • an insert section for an earth engaging implement of the type defined in the preceding aspect of the invention comprising a pair of opposed laterally extending flange portions and an upstanding flange portion secured thereto at the point of intersection between said laterally extending flange portions.
  • the laterally extending flange portions flare outwardly a p ⁇ rtional distance along their outer edges from the rear towards the front of the insert section and then taper towards a point at the tip of the insert section.
  • the outwardly extending flange portions are integrally formed from a unitary piece of metal material, and are angled relative to each other to form a V-shape end section.
  • Fig. 1 is a plan view of a body portion employed in the construction of an earth engaging implement in the form of a cultivator point according to the embodiment;
  • Fig. 2 is a plan view of a body portion employed in the construction of an earth engaging implement in the form of a scarifier point according to the embodiment;
  • Fig. 3 is a plan view of the earth engaging implement of Fig. 2 with a metal section secured within the cut out portion so as to form a scarifier point;
  • Fig. 4 is a front elevation view of Fig. 3;
  • Fig. 5 is a side elevation view of Fig. 3;
  • Fig. 6 is a perspective view of the earth engaging implement of Fig. 3;
  • Fig. 7 is a perspective view of the earth engaging implement using the body portion of Fig. 1 so as to form a cultivator point;
  • Fig. 8 is a top perspective view of the metal section.
  • Fig. 9 is a bottom perspective view of the metal section.
  • the embodiment is directed to an earth engaging implement such as an agricultural point suitable for working soils.
  • a plurality of earth engaging implements are produced from an elongate blank (not shown) of metal material having a transverse extent commensurate with the intended transverse extent of the implements.
  • the length of the blank is variable depending upon how many implements are desired to be formed therefrom.
  • a series of correspondingly shaped body portions 10 are cut, blanked or otherwise worked from said blank using known metal working techniques at successive and contiguous sections, longitudinally along the blank.
  • the body portions are shaped in the manner shown at Fig. 1, and in the case of scarifier points the body portions are shaped in the manner shown at Fig. 2.
  • the body portions 10 are symmetrically shaped to provide a leading pointed end 11, a pair of laterally disposed wing portions 12 having parallel side edges 12a which extend rearwardly at each side of the body portion from the leading point end 11, and a rear recessed end 13 of complementary shape to the pointed end 11.
  • the pointed end 11 has a cut out portion 15 which extends longitudinally of the point, inwardly along the body portion so as to define an elongated opening.
  • the opposing sides of the cut out portion 15 are tapered divergingly from proximate the mid point of each side to the outer end of each side as shown in figures 1 and 2 of the drawings.
  • the rear recessed end 13 is provided with a shank 13a which extends longitudinally outwardly from the recessed end a distance commensurate to, or with modification, less than the inward extent of the cut out portion 15 to allow securement of the agricultural point to an arm (not shown) or other means.
  • An aperture 14 is provided in the body portion adjacent to the shank to facilitate securement of the agricultural point to the arm or other means.
  • the metal section 16 typically is formed from high carbon steel or 'other suitably hard material, with a Rockwell hardness of about 67 to result in an agricultural point with improved wear characteristics.
  • the metal section comprises an upstanding flange portion 17 (see Fig. 4 and 8) which extends along the length of the metal section.
  • the upstanding flange portion comprises an upwardly extending leading edge 17a and a rearwardly extending longitudinal edge 17b being disposed approximately at right angles to each other.
  • the flange portion 17 At the base of the flange portion 17 there are provided two laterally extending secondary flange portions 18 and 19 which also extend along the length of the metal section, wherein the outer edges of the secondary flanges 18 and 19 are welded to the inner edge of the cut out portion 15.
  • the flange portions 18 and 19 as well as extending laterally outwards from the flange 17 are also angled relative to each other to project downwardly forming a V-shape and section, so that the metal section 16 is disposed in relief to the body portion 10 (see Fig. 4).
  • the outer edges of the flange portions 18 and 19 are flared outwardly from proximate the middle of the metal section towards the tip of the metal section so as to complement the tapered outer ends of the cut out portion 15. From points 11a that correspond to the leading tips of the body portion 10, the metal section 16 tapers convergingly to form a tapered nose so as to efficiently engage the soil during use.
  • the parallel side edges 12a of the wing portions 12 extend rearwardly a significant distance, which in the present embodiment is greater than the comparative forward extent of the leading pointed end 11. This rearward extension extends the working life of the point by accommodating wear of the confronting and soil engaging edge of the leading pointed end.
  • the parallel arrangement of the side edges 12a furthermore provide for continuous wear along the confronting and soil engaging edge, maintaining the maximum breadth of this edge with wear over a period of time.
  • the body portions 10 are complementarily configured along the front and rear portions thereof so that when the body portions are cut from the blank, the cutting of the rear portion of one body portions concurrently forms the front portion of the adjacent body portion, and vice versa. Consequently, the number of body portions which can be made from a single metal blank is optimised. This provides less waste and hence more efficient and less expensive production of implements.
  • the shank 13a of the body portion 10 particularly in the scarifier point is also flared at its inner end towards the wing portions 12, thereby providing an optimal distance between the aperture 14 and the rear edge of the point which enhances the strength of the securement of the point to the arm or other means to which the shank is attached.
  • the slim profile design of the agricultural point allows points of various thicknesses points to be made for varying soil conditions without the need for subsequent design modifications.
  • a body portion is blanked, punched, cut or shaped in any other suitable way from a piece of steel plate.
  • the body portions are subsequently shaped by bending or stamping to form the profile required for the agricultural point intended.
  • the shank 13a may be modified as disclosed in Fig. 2 in the case of a scarifier point if required.
  • the metal section 16 is located within the cut out 15 and is welded therein to form an agricultural point with a hardened point which additionally contains an upstanding flange.
  • the blank may be shaped by bending or stamping to form the profile required for the agricultural point prior to or simultaneously with the blanking, punching, cutting or other working of the blank to form the body portions.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Soil Working Implements (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)

Abstract

An agricultural point comprising a body portion (10) having a pair of laterally and oppositely extending wing portions (12) and a rear recessed end (13). The point also comprises an insert section (16). The body portion (10) has a leading pointed end (11) which is provided with an elongated cut out portion (15) extending from the tip of the body portion (10) inwardly longitudinally of the body portion. The insert section (16) is located in the cut out portion and comprises an upstanding portion (17) and a pair of laterally outwardly extending flange portions (18 and 19) which are welded along their outer edges to the corresponding edges of the cut out portion (15). The wings (12) are provided with parallel longitudinally extending sides (12a). The recessed portion (13) is provided with a shank (13a) which extends longitudinally outwardly from the recessed end (13) to allow for securement of the agricultural point to a ground working implement. The invention also covers the insert section (16) per se, and a method for forming the agricultural point described.

Description

"IMPROVEMENTS IN AND RELATING TO AGRICULTURAL POINTS AND A METHOD FOR FORMING THE SAME"
THIS INVENTION relates to earth engaging implements such as agricultural points for ground working implements such as scarifiers, cultivators and seeding combines.
Agricultural points commonly in use are subject to abrasive wear, and thus require to be replaced regularly resulting in lost time and increased costs. Additionally, it is important in the design of an efficient agricultural point that the energy required to move the point through the soil is minimised and the amount of soil moved by the point is maximised. This becomes particularly important, when a larg'e number of such agricultural points are towed behind an agricultural machine, such as a tractor, as highly efficient points will allow a larger number to be towed by a tractor, thereby, improving the efficiency of the system.
It has previously been known to weld wear strips onto existing points so that the wear strip disposed at the leading portions of the point receive most of the abrasive wear and thus improve the longevity of the point. Such wear strips are normally disposed at the nose and along the leading edges of the lateral wing portions of the point, and are usually formed of metal which has been specially toughened and hardened to minimise the abrasive effect of the soil thereon.
Although these types of points are effective in improving the longevity of the point, they are inefficient in the energy required to move the point through the soil, since those portions of the point which are provided with the wear strips are twice the thickness or more of a point without the wear strips. Thus, at the cost of improved tolerance to abrasive wear, a decrease in the efficiency of operation of the points results, since the thickened points require greater energy to move them through the soil.
Another disadvantage with the use of points provided with wear strips is that the fixing of the wear strips upon the point is an entirely separate operation to the formation of the point itself, resulting in an overall increased cost to the ' end purchaser of such a point provided with wear strips. Moreover, the initial manufacturing stage of the point is generally undertaken with little or no regard to the post manufacturing stage of fixing wear strips to the point. This results in a double set of marketing costs being passed on to the purchaser of such points, the first associated with the initial manufacture of the points, and the second, entirely separate of the initial manufacturing stage, associated with fixing the wear strips upon the points.
Accordingly it is an object of one form of this invention to provide an earth engaging implement such as an agricultural point, which possesses improved wear resistance and is more efficient in soil displacement.
It is an object of another form of this invention to provide an efficient method of forming an earth engaging implement such as an agricultural point which possesses improved wear resistance and more efficient soil displacement characteristics than has heretofore been the case with previous methods of forming such implements.
In accordance with one aspect of the invention, there is provided an earth engaging implement comprising: a body portion having a leading pointed end, laterally extending wing portions and a rear recessed end, the pointed end and area adjacent to the pointed end being provided with a cut out portion extending from the leading tips of the pointed end inwardly along the body portion; and an insert section located in the cut out portion, the insert section comprising an upstanding portion which presents an upwardly and rearwardly extending leading edge.
Preferably, the upstanding portion comprises a flange provided on the insert section.
Preferably, the insert section is configured to substantially fill the cut out portion.
Preferably the metal insert is formed from an elongate section comprising a first upstanding flange portion extending along the length of the section, and a second and third flange portion secured to the base of the first flange portion, and extending laterally outwards, wherein the outer edges of the second and third flange portions are secured to the inner edge of the cut out portion in the body of the earth engaging implement.
In accordance with another aspect of the invention, there is provided an insert section for an earth engaging implement of the type defined in the preceding aspect of the invention, the insert section comprising a pair of opposed laterally extending flange portions and an upstanding flange portion secured thereto at the point of intersection between said laterally extending flange portions.
Preferably, the laterally extending flange portions flare outwardly a pαrtional distance along their outer edges from the rear towards the front of the insert section and then taper towards a point at the tip of the insert section. Preferably, the outwardly extending flange portions are integrally formed from a unitary piece of metal material, and are angled relative to each other to form a V-shape end section.
In accordance with a further aspect of the invention, there is provided a method for forming an earth engaging implement comprising:-
(i) obtaining an elongate blank of material having a transverse extent commensurate to the transverse extent of said implement;
(ii) cutting, blanking or otherwise working the blank at successive and contiguous sections longitudinally therealong to form discrete, correspondingly shaped body portions for respective implements, the body portions having symmetrical laterally disposed wing portions, a leading pointed end provided with a centrally disposed and longitudinally extending cut out portion extending from the pointed end inwardly of the body portion a prescribed distance, and a- rear recessed end of complementary shape to the leading pointed end, whereby the recessed end is provided with a centrally disposed and longitudinally extending shank extending from the recessed end, outwardly of the body portion a distance corresponding to the prescribed distance; and
(iii) fixedly locating an insert section in the cut out portion to provide a wear portion integral with the body portion so as to form the implement.
The invention will be better understood by reference to the following description of one preferred embodiment thereof. The description is made with reference to the accompanying drawings, wherein:-
Fig. 1 is a plan view of a body portion employed in the construction of an earth engaging implement in the form of a cultivator point according to the embodiment;
Fig. 2 is a plan view of a body portion employed in the construction of an earth engaging implement in the form of a scarifier point according to the embodiment;
Fig. 3 is a plan view of the earth engaging implement of Fig. 2 with a metal section secured within the cut out portion so as to form a scarifier point;
Fig. 4 is a front elevation view of Fig. 3;
Fig. 5 is a side elevation view of Fig. 3;
Fig. 6 is a perspective view of the earth engaging implement of Fig. 3;
Fig. 7 is a perspective view of the earth engaging implement using the body portion of Fig. 1 so as to form a cultivator point;
Fig. 8 is a top perspective view of the metal section; and
Fig. 9 is a bottom perspective view of the metal section.
The embodiment is directed to an earth engaging implement such as an agricultural point suitable for working soils.
A plurality of earth engaging implements are produced from an elongate blank (not shown) of metal material having a transverse extent commensurate with the intended transverse extent of the implements. The length of the blank is variable depending upon how many implements are desired to be formed therefrom.
A series of correspondingly shaped body portions 10 are cut, blanked or otherwise worked from said blank using known metal working techniques at successive and contiguous sections, longitudinally along the blank. In the case of cultivator -points, the body portions are shaped in the manner shown at Fig. 1, and in the case of scarifier points the body portions are shaped in the manner shown at Fig. 2.
The body portions 10 are symmetrically shaped to provide a leading pointed end 11, a pair of laterally disposed wing portions 12 having parallel side edges 12a which extend rearwardly at each side of the body portion from the leading point end 11, and a rear recessed end 13 of complementary shape to the pointed end 11.
The pointed end 11 has a cut out portion 15 which extends longitudinally of the point, inwardly along the body portion so as to define an elongated opening. The opposing sides of the cut out portion 15 are tapered divergingly from proximate the mid point of each side to the outer end of each side as shown in figures 1 and 2 of the drawings.
A insert section in the form of a metal section 16 of complementary shape to the opening, and as shown in Figs. 8 and 9, is fitted into the cut out portion 15, and is typically secured thereto by welding.
The rear recessed end 13 is provided with a shank 13a which extends longitudinally outwardly from the recessed end a distance commensurate to, or with modification, less than the inward extent of the cut out portion 15 to allow securement of the agricultural point to an arm (not shown) or other means.
An aperture 14 is provided in the body portion adjacent to the shank to facilitate securement of the agricultural point to the arm or other means.
The metal section 16 typically is formed from high carbon steel or 'other suitably hard material, with a Rockwell hardness of about 67 to result in an agricultural point with improved wear characteristics. The metal section comprises an upstanding flange portion 17 (see Fig. 4 and 8) which extends along the length of the metal section. The upstanding flange portion comprises an upwardly extending leading edge 17a and a rearwardly extending longitudinal edge 17b being disposed approximately at right angles to each other.
At the base of the flange portion 17 there are provided two laterally extending secondary flange portions 18 and 19 which also extend along the length of the metal section, wherein the outer edges of the secondary flanges 18 and 19 are welded to the inner edge of the cut out portion 15. The flange portions 18 and 19 as well as extending laterally outwards from the flange 17 are also angled relative to each other to project downwardly forming a V-shape and section, so that the metal section 16 is disposed in relief to the body portion 10 (see Fig. 4). To complement the cut out portion, the outer edges of the flange portions 18 and 19 are flared outwardly from proximate the middle of the metal section towards the tip of the metal section so as to complement the tapered outer ends of the cut out portion 15. From points 11a that correspond to the leading tips of the body portion 10, the metal section 16 tapers convergingly to form a tapered nose so as to efficiently engage the soil during use.
The parallel side edges 12a of the wing portions 12 extend rearwardly a significant distance, which in the present embodiment is greater than the comparative forward extent of the leading pointed end 11. This rearward extension extends the working life of the point by accommodating wear of the confronting and soil engaging edge of the leading pointed end. The parallel arrangement of the side edges 12a furthermore provide for continuous wear along the confronting and soil engaging edge, maintaining the maximum breadth of this edge with wear over a period of time.
The body portions 10 are complementarily configured along the front and rear portions thereof so that when the body portions are cut from the blank, the cutting of the rear portion of one body portions concurrently forms the front portion of the adjacent body portion, and vice versa. Consequently, the number of body portions which can be made from a single metal blank is optimised. This provides less waste and hence more efficient and less expensive production of implements.
The shank 13a of the body portion 10 particularly in the scarifier point is also flared at its inner end towards the wing portions 12, thereby providing an optimal distance between the aperture 14 and the rear edge of the point which enhances the strength of the securement of the point to the arm or other means to which the shank is attached. *
_ 9 _
The slim profile design of the agricultural point allows points of various thicknesses points to be made for varying soil conditions without the need for subsequent design modifications.
To form the agricultural point of this invention, a body portion is blanked, punched, cut or shaped in any other suitable way from a piece of steel plate. The body portions are subsequently shaped by bending or stamping to form the profile required for the agricultural point intended. The shank 13a may be modified as disclosed in Fig. 2 in the case of a scarifier point if required. Subsequently, the metal section 16 is located within the cut out 15 and is welded therein to form an agricultural point with a hardened point which additionally contains an upstanding flange.
Various other changes and modifications can be made to the embodiment described without departing from the spirit and scope of the invention. For example the blank may be shaped by bending or stamping to form the profile required for the agricultural point prior to or simultaneously with the blanking, punching, cutting or other working of the blank to form the body portions.

Claims

THE CLAIMS defining the invention are as follows:-
1. An earth engaging implement for a ground working implement comprising: a body portion having a leading pointed end, a pair of laterally extending wing portions and a rear recessed end, said pointed end and area adjacent to the pointed end being provided with a cut out portion extending from the leading tips of said pointed end inwardly along the body portion; and an insert section located in the cut out portion, said insert section comprising an upstanding portion which presents an upwardly extending leading edge, and a rearwardly extending longitudinal edge.
2. An earth engaging implement as claimed in claim 1, wherein said upstanding portion comprises a flange provided on said insert section with said upwardly extending leading edge and said rearwardly extending longitudinal edge being approximately at right angles.
3. An earth engaging implement as claimed in claim 1 or 2, wherein said insert section is configured to substantially fill the cut out portion.
4. An earth engaging implement as claimed in any one of the preceding claims, wherein said insert section is formed from an elongate section comprising a first upstanding flange portion extending along the length of the section, and a second and third flange portion secured to the base of the first flange portion, and extending laterally outwards in opposite directions, wherein the outer edges of the second and third flange portions are secured to the inner edge of the cut out portion in the body of the earth engaging implement.
5. An earth engaging implement as claimed in claim 4, wherein said second and third flange portions are downwardly angled relative to each other to form a V-shape end section so that said insert section is disposed in relief with respect to said body portion.
6. An earth engaging implement as claimed in claim 4 or 5, wherein the outer edges of said second and third flange portions flare outwardly and said cut out portion is configured complementarily to accommodate the same, from proximate the middle of said insert section towards the tip of said insert section to terminate at respective points disposed contiguously with said leading tips of said body portion, wherefrom said outer edges taper convergingly to form a tapered nose for said earth engaging implement.
7. An earth engaging implement as claimed in any one of the preceding claims, wherein said leading pointed end and said cut out portion of said body portion is complementary to the rear recessed end of said body portion.
8. An earth engaging implement as claimed in any one of the preceding claims, wherein said rear recessed end incorporates a shank extending longitudinally outwardly from said recessed end a distance commensurate to or less than the inward extent of said cut out portion, and said body portion being provided with an aperture adjacent to said shank to allow securement to said ground working implement.
9. An earth engaging implement as claimed in claim 8, wherein said shank is flared at its inner end towards said wing portions so as to optimise the distance between said aperture and the rear edge of said recessed end to enhance the strength of said securement to said ground working implement.
10. An earth engaging implement as claimed in any one of the preceding claims, wherein said wing portions have parallel side edges extending rearwardly at each side of said body portion from said leading pointed end to maintain the maximum breadth of said earth engaging implement for confronting and engaging the earth and thereby providing for and accommodating continuous ware of said leading pointed end.
11. An insert section for an earth engaging implement of the type claimed in any one of claims 1 to 10, the insert section comprising a pair of opposed laterally extending flange portions and an upstanding flange portion secured thereto at the point of intersection between said laterally extending flange portions, said upstanding flange portion presenting an upwardly extending leading edge and a rearwardly extending longitudinal edge.
12. An insert section as claimed in claim 11, wherein said laterally extending flange portions flare outwardly a portional distance along their outer edges from the rear towards the front of said insert section and then taper towards a point at the tip of said insert section.
13. An insert section as claimed in claim 11 or 12, wherein said laterally extending flange portions are integrally formed from a unitary piece of metal material, and are downwardly angled relative to each other to form a V-shape end section.
14. An insert section as claimed in any one of claims 11 to 13, wherein said upwardly extending leasing edge and said rearwardly extending longitudinal edge are approximately at right angles.
15. A method for forming an earth engaging implement comprising:-
(i) obtaining an elongate blank of material having a transverse extent commensurate to the transverse extent of said implement;
(ii) cutting, blanking or otherwise working said blank at successive and contiguous sections longitudinally therealong to form discrete, correspondingly shaped body portions for respective implements, said body portions having symmetrical laterally disposed wing portions, a leading pointed end provided with a centrally disposed and longitudinally extending cut out portion extending from said pointed end inwardly of said body portion a prescribed distance, and a rear recessed end of complementary shape to said leading pointed end, whereby said recessed end is provided with a centrally disposed and longitudinally extending shank extending from said recessed end, outwardly of said body portion a distance corresponding to the prescribed distance; and
(iii) fixedly locating an insert section in said cut out portion to provide a wear portion integral with the body portion so as to form the implement.
16. An earth engaging implement substantially as herein described with reference to the accompanying drawings.
17. An insert section substantially as herein described with reference to the accompanying drawings.
18. A method for forming an earth engaging implement substantially as herein described.
PCT/AU1992/000202 1991-05-03 1992-05-04 Improvements in and relating to agricultural points and a method for forming the same WO1992019094A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPK596891 1991-05-03
AUPK5968 1991-05-03

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5940780A (en) * 1979-06-19 1981-01-08 Ralph Mckay Limited Tine point or share
AU6892081A (en) * 1980-06-20 1982-01-07 Farm Innovations Pty. Ltd. Agricultural shares
AU7444081A (en) * 1980-08-21 1982-02-25 John Tom Arthur Doman Agricultural implements
AU1206883A (en) * 1982-03-10 1983-09-15 Farm Innovations Pty. Ltd. Two-part agricultural shape
US4645013A (en) * 1985-09-12 1987-02-24 Adams Hard-Facing Company, Inc. Agricultural sweep
AU6314786A (en) * 1985-09-26 1987-04-02 Farm Innovations Pty. Ltd. Agricultural shares
AU7891487A (en) * 1986-11-18 1988-05-19 Euchuca Nominees Pty. Ltd. Attachment for cultivator tynes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5940780A (en) * 1979-06-19 1981-01-08 Ralph Mckay Limited Tine point or share
AU6892081A (en) * 1980-06-20 1982-01-07 Farm Innovations Pty. Ltd. Agricultural shares
AU7444081A (en) * 1980-08-21 1982-02-25 John Tom Arthur Doman Agricultural implements
AU1206883A (en) * 1982-03-10 1983-09-15 Farm Innovations Pty. Ltd. Two-part agricultural shape
US4645013A (en) * 1985-09-12 1987-02-24 Adams Hard-Facing Company, Inc. Agricultural sweep
AU6314786A (en) * 1985-09-26 1987-04-02 Farm Innovations Pty. Ltd. Agricultural shares
AU7891487A (en) * 1986-11-18 1988-05-19 Euchuca Nominees Pty. Ltd. Attachment for cultivator tynes

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