AU784661B2 - Reversible planter point - Google Patents
Reversible planter point Download PDFInfo
- Publication number
- AU784661B2 AU784661B2 AU15623/02A AU1562302A AU784661B2 AU 784661 B2 AU784661 B2 AU 784661B2 AU 15623/02 A AU15623/02 A AU 15623/02A AU 1562302 A AU1562302 A AU 1562302A AU 784661 B2 AU784661 B2 AU 784661B2
- Authority
- AU
- Australia
- Prior art keywords
- reversible
- point
- planter
- planter point
- cutting edge
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
- 230000002441 reversible effect Effects 0.000 title claims description 74
- 230000003993 interaction Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 238000005553 drilling Methods 0.000 description 33
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 14
- 229910052721 tungsten Inorganic materials 0.000 description 14
- 239000010937 tungsten Substances 0.000 description 14
- 239000002689 soil Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007226 seed germination Effects 0.000 description 3
- 238000003971 tillage Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
Description
P/00/011 Regulation 3.2
AUSTRALIA
Patents Act 1990
ORIGINAL
COMPLETE SPECIFICATION STANDARD PATENT Invention Title: "REVERSIBLE PLANTER POINT" The following statement is a full description of this invention, including the best method of performing it known to me/us: 2
TITLE
"REVERSIBLE PLANTER POINT" FIELD OF THE INVENTION THE PRESENT INVENTION relates to planter points. More particularly, the present invention relates to planter points, which are suitable for a form of planting known as direct drilling.
BACKGROUND OF THE INVENTION With the advent of conservation or minimum tillage, a form of planting known as direct drilling has become a more common practice.
Direct drilling typically involves planting directly into unprepared ground, which typically means that the ground is less easy to penetrate for formation of a seed bed.
Because of the difficulty of penetration of the ground in direct drilling, planter points typically wear, and hence blunt, at a much greater rate than in conventional planting. Reducing excess wear therefore typically consumes a significant amount of time and expense in the development and production of direct drilling planter points.
Direct drilling planter points typically include a wedge like section that provides a vertically orientated cutting edge for penetration of the ground and formation of a seedbed. The cutting edge is typically required to be sharp as blunting of the edge can lead to smearing of the seedbed, which adversely effects yield.
One of the ways to increase the life of direct drilling planter points is to harden the points in regions of high wear and/or of significant functional importance. For example, tungsten tiles are typically placed over 3 specific regions of a direct drilling planter point, in particular, in the region forming the cutting edge. However, it has been found that the cutting edge of the hardened points causes smearing of the seedbed and hence become ineffective, well before the function of the remainder of the point is affected.
It is therefore desirable to provide a direct drilling planter point which is useable for a longer period of time than direct drilling planter points currently available.
SUMMARY OF THE INVENTION The present invention provides a reversible planter point comprising: a cutting edge; (ii) a body incorporating said cutting edge; (iii) an attachment part located at a rear end of the body for releasable attachment to a support and adapted to: a) orienting the cutting edge in use at an angle to a horizontal ground surface for cutting through ground to provide a seed bed for seed, said cutting edge being inclined generally vertically and oriented from top to bottom rearwardly having regard to the direction of travel of the body; and b) facilitating attachment of the body to the support in two orientations so that in use upper and lower regions of the cutting edge •l are interchanged.
Preferably the two orientations correspond to relating rotation of the planter point through 1800.
In one embodiment, said planter point attaches to said support via an adaptor.
In another embodiment, said planter point attaches directly to said support.
Suitably, said adaptor and said support, or said planter point s and said support have corresponding portions for registry with each other, and which may register with each other in male-female interaction.
Preferably, said male-female interaction comprises spigotsocket interaction.
Suitably, said planter point comprises one or more hardened regions to prolong effective use of the point.
Suitably, at least one of said one or more hardened regions comprises one or more plates attached to an external surface of said point, said one or more plates being formed of a material that is harder than nonhardened regions of said planter point.
BRIEF DESCRIPTION OF THE DRAWINGS A preferred embodiment of the present invention will now be described, by way of example only, with reference to the accompanying drawings in which: FIG. 1 a is a side elevational view of one embodiment of a prior art direct drilling planter point; FIG. 1 b is a plan view of the prior art direct drilling planter point of FIG. la; FIG. Ic is a perspective view of the prior art direct drilling planter point of FIGS. l a and 1 b, attached to a planting implement; FIG. 2a is side elevational view of one embodiment of a reversible direct drilling planter point; FIG. 2b is a plan view of the reversible direct drilling planter point of FIG. 2a; FIG. 3a is a side elevational view of one embodiment of an adapter which is designed to removably attach the reversible direct drilling o10 planter point of FIG. 2 to a tyne of a planting implement; 9.9.9.
FIG. 3b is a plan view of the adapter of FIG. 3a; S: FIG. 4 is a perspective view of the reversible direct drilling planter point of FIGS. 2a and 2b, attached to a planting implement, via the adaptor of FIGS. 3a and 3b; FIG. 5a is a side elevational view of one embodiment of a reversible direct drilling planter point which includes a hardened cutting edge; S"FIG. 5b is a plan view of the reversible direct drilling planter point of FIG. FIG. 5c is a longitudinal sectional view of the reversible direct drilling planter point of FIGS. 5a and FIG. 6a is a side elevational view of another embodiment of a hardened reversible direct drilling planter point; and FIG. 6b is a plan view of the hardened reversible direct drilling planter point of FIG. 6a.
BEST METHOD FOR CARRYING OUT THE INVENTION Referring to FIGS. la and Ib, one embodiment of a surface hardened prior art direct drilling planter point, prior art point 10, generally comprises a solid inclined pyramid-like shaped body 12 which tapers to a cutting edge 14, and a spigot 16. The spigot 16 extends away from a base 18 of the inclined pyramid-like shaped body 12. Surface hardening of the prior art point 10 is provided by tungsten tiles 20, 22 and 24 which are attached to the inclined pyramid-like shaped body 12. The shape of the body 12 is such that ends of the tungsten tiles 20, 22 and 24 which are closest the cutting edge 14 converge toward each other. The tungsten tiles 20 and 24 contact each other at one of the ends to form the cutting edge 14.
Referring to FIG. Ic, the prior art point 10 is designed to attach to a support component of a planting implement 25, such as a tyne 27, via ~.the spigot 16. When so attached, the cutting edge 14 is directed downwardly toward ground which the prior art point 10 is designed to penetrate for formation of a seed bed. The spigot 16 is attached to tyne 27 by fastener elllI (not shown) inserted through attachment aperture 33.
The planting implement 25 includes a pull 29 which is designed for attachment to a tractor (not shown) for pulling of the implement 25 over the ground. The planting implement 25 is provided with horizontal frame member 25A and both tynes 27 are attached to frame member 25A by bracket 25B and bolts 25C. Pull 29 is attached to frame member 25A in similar manner. The number of prior art points 10 that the planting implement 25 includes depends on the spacing between adjacent prior art points 10, and the planting width of the planting implement 25. Elevation of 7 the planting implement 25 relative to the ground can be altered to enable the planting implement 25 to be moved with the prior art points 10 above the ground, and also to vary the depth of penetration of the prior art points into the ground. By varying the depth of penetration, the depth at which seed s is planted can be altered to optimise seed germination.
There is also provided seed tube apparatus 36 having flexible hose 36A and rigid conduit 36B fixed to tyne 27 by strut 36C. Conduit 36B has socket 36D for hose 36A and facilitates the dropping of seeds (not shown) into the ground from hollow member 36E and, more specifically, into a ground furrow (not shown) created by points 10 penetrating the ground.
As can be seen in FIG. 1c, with the elevation of the planting implement 25 relative to the ground appropriately adjusted so the prior art ~points 10 penetrate the ground, as the planting implement is pulled over the ground, the prior art points 10 are pulled through the ground to result in soil 35 flowing around the sides of the prior art points 10. Such flow of soil relative to the prior art points 10 causes them to wear.
SThe tungsten tiles 20, 22 and 24 are positioned to reduce wear in the most critical region of the prior art points 10, namely the cutting edge 14, to enable the prior art point 10 to effectively plant seed for a much longer period of time than would otherwise be the case. However, while the wear rate of the tungsten tiles 20, 22 and 24 is less than that of surfaces of the prior art points 10 which are not covered by tungsten tiles, they still wear.
While the cutting edge 14 which is formed at the intersection of tungsten tiles and 24 is sharp, the prior art point 10 is able to cut through soil to form a moist seed bed which facilitates seed germination. As the tungsten tiles 8 and 24 wear, the cutting edge 14 becomes rounded and hence blunts, well before the remainder of the prior art point 10 is affected in a way which is detrimental to its function. Blunting of the cutting edge 14 results in what is commonly referred to as smearing of the seed bed. When this occurs walls which are formed in the moist soil in the process of forming the seed bed are formed by a rubbing, rather than cutting, action. This rubbing results in the walls which form the seed bed drying more quickly than they otherwise would so that seed which is deposited onto the seed bed is deposited onto the dried crust rather than a moist seed bed. As expected, the dried crust adversely effects seed germination and hence yield.
Therefore, once blunting of the cutting edge 14 occurs, the :prior art point 10 has to be replaced, even though the remainder of the point "10 is in good working order. This replacement of points is obviously .o undesirable as it adds additional expense to the planting process.
Referring to FIGS. 2a and 2b, one embodiment of a reversible direct drilling planter point, reversible point 30, generally comprises a hollow
.O
.l symmetrical pyramid-like shaped body 32 which tapers to provide a cutting edge 34. A pyramid-like shaped socket 36 is formed symmetrically within an end 38 of the reversible point 30 which is remote from the cutting edge 34.
Opposed holes 40 are formed in opposite walls 42 and 44 of the reversible point 30 which partially define the pyramid-like shaped socket 36.
There is also provided a top and bottom surfaces 35 adjacent tapered surfaces 37 and angled surfaces 33 merging in point 34.
8A Attachment of reversible points 30 to a planting implement is explained by reference to FIGS. 3a, 3b and 4. For ease of reference, like features of planting implements of FIGS. Ic and 4 are referred to by like reference numerals. As explained above in relation to the prior art point 0S w
S
55A5 the number of points that are attached to a planting implement 25 of FIG. 4 depends on the spacing of the points and the width of the planting implement The reversible point 30 is designed for attachment to a planting s implement 25 via an adapter 48 of FIGS. 3a and 3b. With the exception of the adaptor 48, attachment of the reversible point 30 to the planting implement 25 is otherwise the same as explained above in relation to the prior art point 10. Attachment of the reversible point 30 to the planting implement 25 results in the reversible point 30 being orientated relative to the 10 planting implement 25 in a similar manner as described above in relation to llO..i the prior art point S. The adapter includes spigots 50 and 52. Spigot 50 is shaped for receipt within the pyramid-like shaped socket 36 of the reversible point S. 30. The spigot 50 includes a bore 54 which is designed for alignment with
.I
opposed holes 40 upon insertion of the spigot 50 into the pyramid-like shaped socket 36 of the reversible point 30. Once appropriately aligned, a ooo.i S"pin, bolt or the like can be used to fix the assembled reversible point 30 and adapter 48 relative to each other.
The spigot 52 is designed for engagement with a corresponding socket 53 of a tyne 27 of the planting implement 25. The adapter 48 is designed to attach the reversible point 30 to a planting implement so that the walls 42 and 44 extend transversely of ground which is being planted by the planting implement 25, and the cutting edge 34 penetrates the ground upon lowering of the planting implement.
As is the case in relation to the prior art point 10, use of the reversible point 30 results in blunting of the cutting edge 34. However, blunting occurs predominantly in relation to a lower region 55 of the cutting edge 34. Therefore, in the case of the reversible point 30, use of the point can be extended by removing it from the spigot 50, and reattaching it to the spigot 50 so that the lower worn region of the cutting edge 34 is positioned upwardly of a lower less worn region 55 of the cutting edge 34. That is, the reversible point 30 is reversed relative to the adapter 48 by rotating the reversible direct drilling planter point 30 through 1800 about a longitudinal axis of the point between initial and subsequent orientations. With the 10 reversible point 30 in the subsequent orientation, planting can continue with .OI.li the same planter point without yield being adversely effected until the lower less worn region of the cutting edge 34 blunts. When blunting of the lower less worn region occurs, the point must be replaced with a new point or alternatively, the tapered end of the reversible point 30 must be sharpened to go reform the cutting edge 34. In most situations however the reversible point 30 is simply replaced.
Referring to FIGS. 5a, 5b and 5c, another embodiment of a reversible direct drilling planter point, reversible point 56, is similar to the reversible point 30 with the following exceptions. For ease of reference, like features of reversible points 30 and 56 are referred to by like reference numerals. The reversible point 56 includes a hardened wedge-shaped head 58 which is formed separately from a body 60 of the reversible point 56, and subsequently joined. The hardened wedge-shaped head 58 is formed from tungsten; however, it may be formed from any other suitable wear resistant material. The hardened wedge-shaped head 58 and body 60 are attached 11 via a spigot 62, which extends from the body 60, and a corresponding socket 64, which is formed in the hardened wedge-shaped head 58. With the spigot 62 appropriately inserted into the socket 64, the hardened wedge-shaped head 58 is welded to the body The concept of a hardened wedge-shaped head attaching to a body of a non-reversible direct drilling planter point via spigot/socket engagement has been previously implemented. However, in these situations the spigot extends from the hardened wedge-shaped head, and is prone to breakage. It has been found that problems of breakage of the spigot have 10 been addressed by attaching it to the body of the point, rather than the wedge-shaped head.
Small wings 66 are attached to walls 42 and 44 of the body and extend laterally of the body S. As the reversible point 56 does not include surface hardening on areas other than the wedge-shaped head 58, it is more suitable for use in relatively fine or unabrasive soils. The wings 66 provide increased tillage.
Referring to FIGS. 6a and 6b, another embodiment of a reversible direct drilling planter point, reversible point 70, is similar to the reversible point 56 with the exception that it includes additional surface hardening, and does not include wings 66. For ease of reference, like features of reversible points 30, 56 and 70 are referred to by like reference numerals. The additional surface hardening is in the form of lower and upper tungsten tiles 72 and 74 respectively, and front and rear side tungsten tiles 76 and 78 respectively. The additional surface hardening of the reversible point 70 means that the body 60 is more protected against wear than the 12 reversible points 30 and 56 and as such the reversible point 70 is suitable for use in coarse, or more abrasive soils than the reversible point 56.
While the reversible point 70 includes tungsten tiles 72, 74, 76 and 78, it will be readily appreciated by a person skilled in the relevant art that the reversible point 70 could include none of the tungsten tiles 72-78, or alternatively, any combination thereof. Furthermore, it will also be readily appreciated by a person skilled in the relevant art, that reversible points o. o.
56 and 70 can be provided in various shapes.
0* It will also be readily appreciated by a person skilled in the o10 relevant art that numerous types of adapters differing to the adapter 48 are suitable for attachment of a reversible direct drilling planter point to a planting implement. For example, an adapter could include a socket for receipt of a *Woo." spigot of a reversible direct drilling planter point. An adapter could also include either a socket, or alternatively, a spigot for attachment to a planting 16 implement. Furthermore, it will also be readily appreciated by a person d..os skilled in the relevant art, that the reversible direct drilling planter point can S" be attached directly to the planting implement, without use of an adapter. In such a situation the planter point could include a spigot or socket, or alternatively, an appropriate aperture(s) for insertion therethrough of an attachment pin, bolt or the like.
Although reversible points 30, 56 and 70 are direct drilling planter points, the present invention is not limited to direct drilling planting.
Therefore, the function of reversible points 30, 56 an 70 can be extended to conventional planter points used for conventional farming that does not implement minimum or conservation tillage principles.
13 It will also be appreciated that from FIGS 2a and 2b, 5a and and 6a and 6b that body 32 has a centre of bilateral symmetry both in plan view as well as side view.
*g* o* oo* o° ooo
Claims (9)
1. A reversible planter point comprising: a cutting edge; (ii) a body incorporating said cutting edge; (iii) an attachment part located at a rear end of the body for releasable attachment to a support and adapted to: a) orienting the cutting edge in use at an angle to a horizontal ground surface for cutting through ground to provide a seed bed for seed, said cutting edge being inclined generally vertically and oriented from top to bottom rearwardly having regard to the direction of travel of the body; and b) facilitating attachment of the body to the support in two orientations so that in use upper and lower regions of the cutting edge are interchanged.
2. A reversible planter point as claimed in claim 1 wherein the body has an axis of bilateral symmetry both in plan view and in side view.
3. A reversible planter point as claimed in claim 2 wherein the body has a planar top surface extending downwardly from a rear end of the Sbody toward the cutting edge in side view as well as a planar bottom surface extending upwardly from said rear end toward the cutting edge.
4. A reversible planter point wherein the body includes opposed planar surfaces oriented vertically in use on each side thereof.
III* A reversible planter point as claimed in claim 4 wherein there is 25 provided relatively narrow oblique surfaces between the planar top surface and the vertical side surface and the planar bottom surface and the vertical side surface on each side of the body.
6. A reversible planter point as claimed in any one of claims 1 to wherein there is provided a cutting head incorporating said cufftting surface which has angled surfaces meeting at said cutting edge.
7. A reversible planter point as claimed in any one of claims 1 to wherein there is provided a cutting head incorporating said cutting edge which is releaseably attachable to the body.
8. A reversible planter point as claimed in any preceding claim wherein said orientations correspond to relative rotation of the body through
1800.
9. A reversible planter point as claimed in any preceding claim wherein said planter point attaches to said support via an adaptor. A reversible planter point as claimed in any one of claims 1 to 8 wherein said planter point attaches directly to said support. 11. A reversible planter point as claimed in claim 9 wherein said I adaptor and said support have corresponding portions for registry with each other. 12. A reversible planter point as claimed in claim 10 wherein said planter point and said support have corresponding portions for registry with each other. 2 13. A reversible planter point as claimed in any one of claims 1 or 2 12 wherein said registry comprises male-female interaction. 14. A reversible planter point as claimed in claim 13 wherein said •Oi* male-female interaction comprises spigot-socket interaction. A reversible planter point as claimed in any preceding claim wherein said planter point comprises one or more hardened regions to prolong effective use of said point. 16 16. A reversible planter point as claimed in claim 15 wherein at least one said one or more hardened regions comprises one or more plates attached to an external surface of said point, said one or more plates being formed of a material that is harder than non-hardened regions of said planter point. 17. A reversible planter point substantially as herein described with reference to one or more of FIGS. 2 to DATED this Fourteenth day of January 2002. CASTPOINTS PTY LTD .0 by its Patent Attorneys FISHER ADAMS KELLY
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU15623/02A AU784661B2 (en) | 2001-02-14 | 2002-02-14 | Reversible planter point |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPR3060A AUPR306001A0 (en) | 2001-02-14 | 2001-02-14 | Reversible seeding point |
| AUPR3060 | 2001-02-14 | ||
| AU15623/02A AU784661B2 (en) | 2001-02-14 | 2002-02-14 | Reversible planter point |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU1562302A AU1562302A (en) | 2002-08-15 |
| AU784661B2 true AU784661B2 (en) | 2006-05-18 |
Family
ID=25616092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU15623/02A Ceased AU784661B2 (en) | 2001-02-14 | 2002-02-14 | Reversible planter point |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU784661B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441454A (en) * | 2013-07-29 | 2013-12-11 | 内蒙古祥宇通信网络工程有限公司 | Tool bit of ditcher |
| AU2021103456B4 (en) * | 2021-06-18 | 2022-08-04 | Cruel Sea Technologies Pty Ltd | Wear resistant fertiliser boot |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2244394A1 (en) * | 1973-09-24 | 1975-04-18 | Gilet Raymond | Reversible agricultural implement tine - is bolted to support so one working end projects only |
| AU2491977A (en) * | 1977-05-05 | 1978-05-18 | Esco Corporation | Releasable lock for excavating tooth |
| WO1993020293A1 (en) * | 1992-04-07 | 1993-10-14 | Neville Eugen Matthews | Excavator tooth retaining assembly |
-
2002
- 2002-02-14 AU AU15623/02A patent/AU784661B2/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2244394A1 (en) * | 1973-09-24 | 1975-04-18 | Gilet Raymond | Reversible agricultural implement tine - is bolted to support so one working end projects only |
| AU2491977A (en) * | 1977-05-05 | 1978-05-18 | Esco Corporation | Releasable lock for excavating tooth |
| WO1993020293A1 (en) * | 1992-04-07 | 1993-10-14 | Neville Eugen Matthews | Excavator tooth retaining assembly |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441454A (en) * | 2013-07-29 | 2013-12-11 | 内蒙古祥宇通信网络工程有限公司 | Tool bit of ditcher |
| CN103441454B (en) * | 2013-07-29 | 2016-02-10 | 内蒙古祥宇通信网络工程有限公司 | A kind of tool bit of ditcher |
| AU2021103456B4 (en) * | 2021-06-18 | 2022-08-04 | Cruel Sea Technologies Pty Ltd | Wear resistant fertiliser boot |
Also Published As
| Publication number | Publication date |
|---|---|
| AU1562302A (en) | 2002-08-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PC | Assignment registered |
Owner name: GLENMAR HOLDINGS PTY LTD Free format text: FORMER OWNER(S): CASTPOINTS PTY LTD |
|
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |