CA1285807C - Tool for working a medium - Google Patents
Tool for working a mediumInfo
- Publication number
- CA1285807C CA1285807C CA000548298A CA548298A CA1285807C CA 1285807 C CA1285807 C CA 1285807C CA 000548298 A CA000548298 A CA 000548298A CA 548298 A CA548298 A CA 548298A CA 1285807 C CA1285807 C CA 1285807C
- Authority
- CA
- Canada
- Prior art keywords
- tool
- medium
- leading edge
- tine
- working
- 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.)
- Expired - Lifetime
Links
Landscapes
- Soil Working Implements (AREA)
Abstract
ABSTRACT
A soil-working tine has a recess extending along its wearing edge. The recess captures some soil as the tine passes through the soil. The soil captured in the recess acts as a wearing edge, reducing wear on the material of the tine.
A soil-working tine has a recess extending along its wearing edge. The recess captures some soil as the tine passes through the soil. The soil captured in the recess acts as a wearing edge, reducing wear on the material of the tine.
Description
s~
1 A TOOL FOR WORKING A MeDIUM
1 A TOOL FOR WORKING A MeDIUM
3 Field of the Invention 4 This invention relates to tools Eor working media, such as agricultural tools used to work soil.
6 Description of the Prior Art 7 A major problem associated with the use oP tool~ to 8 work media is wear. A particular e~ample can be seen in 9 the practice of deep drilling.
Deep drilling is a seeding operation in which 11 previously unworked rain-softened ground is worked to make 12 an opening in the soil for the deposit of seed therein.
13 Various types of tool design have been suggested for use in 14 such operations, but a major problem is wear. Some tools lS have to be replaced daily due to wear, notwithstanding that 16 they are formed from expensive wear-resisting alloys.
18 It is an object of this invention to provide a tool 19 designed to wear less than equivalent prior art tools.
The inven~ion provides a tool for working a medium 21 wherein said tool is adapted to use part of the said medium 22 as a wearing surface or edge.
23 Preferably, the tool includes a portion which receives 24 material, and provides for the front surface, relative to the intended direction of movement of the tool in the said 26 medium, of the tool to be at least in part constituted by 27 some of the said medium.
28 Preferably, the tool includes a recess adapted to 29 receive part of said medium as said tool is advanced through 870930,!jcspe.006,mitchusa.spe, .
.
' - . ... .
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said medium.
Preferably, the recess is located in the leading edye of said tool.
According to a sti.ll further broad aspect of the presen-t invention there is provided a tool for working a medium and wherein the tool has a leading edge. The leading edge has a recess therein defined by a pair of spaced generally parallel walls for collecting a portion of the medium when the tool is advanced through the medium, such that the portion of the medium forms a wearing edge.
According to a still further broad aspect of the present invention there is provided a tool for working a medium and wherein the tool comprises a leading edge portion. Means is provided for positioning the leading edge portion within the medium continuously during use and for advancing the leading edge portion through the medium in a single direction during use~ The leading edge has a recess therein for collecting a portion of the medium when the tool is advanced through the medium. The leading edge and the recess are configured so as to advance part of the portion of the medium ahead o~ the leading edge such that it forms a wearing surface which mini-mizes wear on the leading edge.
, - . , . ~: , . ~- ' . ., :
. . . :. : . .
~85~7 -2a-BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a side elevation of one embodiment of a tool accordin~ to the invention;
Figure 2 is a horizontal cross-section ~hrough the tool of Figure l;
Figure 3 is an enlarged view in ~ross-section of the front end of a second embodiment of the tool according to the invention;
Figure 4 is an enlarged view in cross-section of a third embodiment of the tool according to the invention;
Figure 5 is a perspective view from above o~ a fourth embodiment of the tool according to the invention;
Figure 6 is a perspective view from beneath of the embodiment of Figure 5;
Figure 7 is a longitudinal cross-section of the embodiment of Figure 5;
Figure 8 is a perspective view from above o~ a fifth embodiment of the tool according to the invention;
Figure 9 is a perspective view from above of a sixth embodiment of the tool according to the invention; and Figure 10 is a perspective view from above of a seventh embodiment of the tool according to the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
All of the seven described embodiments of the invention are tines for working soil in agriculture, but it is stressed that the invention relates to tools or the like for 1~ .
: : .
-. : - ' ', ' :' - ' ' ; .
~2~
1 working any medium for any purpose.
2 In Figure 1, an agricultural apparatus (not shown) 3 includes a support 10 which depends from a gang (not shown) 4 or the like, to which support lO is secured a ground ~or~ing tool 12. The tool is moved through soil in the ~irection oP
6 the arrow.
7 In Figure 2, it can be seen that the tool 12 i9 hollow, 8 having side walls 14, 16, rear wall 18, and top an-l bottom 9 walls 20, 22 tFigure 1). Preferably, the tool is formed from a metal~
11 The invention operates on the principal that as the 12 tool 12 is advanced in the direction of the right-hand arrow 13 in Figure 2, some oÇ the soil 24 through which the tool 12 14 is moving lodges in the hollow portion of the tool 12, building up to a forward edge 26 which acts as a working 16 edge. Having the working edge formed from the soil itself 17 reduces wear on the metal parts of the tool, and thus the 18 need to replace the tool so often is also reduced.
19 Figures 3 and 4 show details of alternative leading edges of walls 14, 16 (and of walls 20, 22) (not shown)) 21 which may enhance the reduction of wear. Figure 3 shows 22 ang~ed leading edges, and Figure 4 shows leading edges 23 havin~ recesses. Of course, other end profiles could be 24 used, and it is also clear that any shape of tool could be used, provided that the tool allowed for the build-up of a 26 cutting edge or surface using the material through which the 27 tool is to be or is being moved. Other examples of tool 28 shapes are shown in Figures 5 to 10 and described 29 hereinafter.
870930,!jcspe.006,mitchusa.spe, . .
, , ' .: ~ . , . ' ~28~i807 In Figures 2 and 4, the relative movement of soil to 2and past the edge 26 is shown by the smaller arrows. It is 3considered that aspects of fluid ~low kheory may be used to 4explain the operation of the invention, as soil (and other 5media formed from solid particles) may under certain 6circumstances be seen as approximating a fluid.
7Turning now to Figures 5 to 7, there i8 illustrated a 8tine 110 including an attachment portion 112 (which may take 9any form, not jus~ the one illustrated, which has depending 10curved walls 114 for a press-fit to a tine holder (not 11shown)). ~n aperture 113 is pro~Jided for a more 12conventional attachment to a tine holder, by a bolt, pin or 13the like. Working body 116 is generally triangular in 14shape, with a curved structure providing a convex upper 15surface.
16Extending around the soil-working edge 118 of the body 17116 there is a recess 120, which may be of any suitable 18depth. Body 116 may be constructed by using an upper 19element and a lower element, welded or otherwise secured 20together so as to leave a space between the elements, at 21least at the working area 118, or may be formed in a single 22piece.
23As described earlier, the recess or the like 120, in 24use, fills with the soil being worked, thereby producing a 25wearing surface from the soil itself.
26The tool 200 of Figure 8 is similar to that of Figures 275 to 7, except that body 202 has a notcb 204 in the 'point' 28area. Recess 206 extends along the entire working edge.
29 Aperture 213 corresponds to aperture 113 in Figures 5 to 7.
A 870930,!jcspe.006,mitchusa.spe, .
- . . - - ~ ~ , : , .
:
~ ~58~)7 1 Figure 9 shows a tool 300 which is also similar to that 2 of Figures 5 to 7. Body 302 has a 'shovel' nose 304.
3 Again, a recess 306 runs along the worlcing area of the tool, 4 and an aperture 213 is provided, similar to aperture 113.
Flnally, the tool 400 of Figure 10 is also similar to 6 that of Figures 5 to 7, except that body 402 has portiorls 7 404, 406, in effect, cut out, leaving a leading portion 408 8 and 'wings' 410, 412. Recess 414 extends along the working 9 areas, and aperture 413 is used to attach the tine 400 to a tine holder.
11 In each of the embodiments, the preferred material is 12 mild steel, it being discovered that the minimization of 13 wear allows a softer ma~erial to be used.
14 ~lthough the manner in which wear is minimized is not well understood, it is a fact that in tests of the tools of 16 Figures 5 to 10, it has been demonstrated that wear is 17 significantly reduced, in comparison with conventional 18 tools.
19 It is to be understood that in working other media, the tool or the like may be formed from other materials. For 21 example, for some softer media, the tool may be formed of a 22 plastics material.
A
870930,!jcspe.006,mitchusa.spe, , . . . : . , - . .
6 Description of the Prior Art 7 A major problem associated with the use oP tool~ to 8 work media is wear. A particular e~ample can be seen in 9 the practice of deep drilling.
Deep drilling is a seeding operation in which 11 previously unworked rain-softened ground is worked to make 12 an opening in the soil for the deposit of seed therein.
13 Various types of tool design have been suggested for use in 14 such operations, but a major problem is wear. Some tools lS have to be replaced daily due to wear, notwithstanding that 16 they are formed from expensive wear-resisting alloys.
18 It is an object of this invention to provide a tool 19 designed to wear less than equivalent prior art tools.
The inven~ion provides a tool for working a medium 21 wherein said tool is adapted to use part of the said medium 22 as a wearing surface or edge.
23 Preferably, the tool includes a portion which receives 24 material, and provides for the front surface, relative to the intended direction of movement of the tool in the said 26 medium, of the tool to be at least in part constituted by 27 some of the said medium.
28 Preferably, the tool includes a recess adapted to 29 receive part of said medium as said tool is advanced through 870930,!jcspe.006,mitchusa.spe, .
.
' - . ... .
~BS~
said medium.
Preferably, the recess is located in the leading edye of said tool.
According to a sti.ll further broad aspect of the presen-t invention there is provided a tool for working a medium and wherein the tool has a leading edge. The leading edge has a recess therein defined by a pair of spaced generally parallel walls for collecting a portion of the medium when the tool is advanced through the medium, such that the portion of the medium forms a wearing edge.
According to a still further broad aspect of the present invention there is provided a tool for working a medium and wherein the tool comprises a leading edge portion. Means is provided for positioning the leading edge portion within the medium continuously during use and for advancing the leading edge portion through the medium in a single direction during use~ The leading edge has a recess therein for collecting a portion of the medium when the tool is advanced through the medium. The leading edge and the recess are configured so as to advance part of the portion of the medium ahead o~ the leading edge such that it forms a wearing surface which mini-mizes wear on the leading edge.
, - . , . ~: , . ~- ' . ., :
. . . :. : . .
~85~7 -2a-BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a side elevation of one embodiment of a tool accordin~ to the invention;
Figure 2 is a horizontal cross-section ~hrough the tool of Figure l;
Figure 3 is an enlarged view in ~ross-section of the front end of a second embodiment of the tool according to the invention;
Figure 4 is an enlarged view in cross-section of a third embodiment of the tool according to the invention;
Figure 5 is a perspective view from above o~ a fourth embodiment of the tool according to the invention;
Figure 6 is a perspective view from beneath of the embodiment of Figure 5;
Figure 7 is a longitudinal cross-section of the embodiment of Figure 5;
Figure 8 is a perspective view from above o~ a fifth embodiment of the tool according to the invention;
Figure 9 is a perspective view from above of a sixth embodiment of the tool according to the invention; and Figure 10 is a perspective view from above of a seventh embodiment of the tool according to the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
All of the seven described embodiments of the invention are tines for working soil in agriculture, but it is stressed that the invention relates to tools or the like for 1~ .
: : .
-. : - ' ', ' :' - ' ' ; .
~2~
1 working any medium for any purpose.
2 In Figure 1, an agricultural apparatus (not shown) 3 includes a support 10 which depends from a gang (not shown) 4 or the like, to which support lO is secured a ground ~or~ing tool 12. The tool is moved through soil in the ~irection oP
6 the arrow.
7 In Figure 2, it can be seen that the tool 12 i9 hollow, 8 having side walls 14, 16, rear wall 18, and top an-l bottom 9 walls 20, 22 tFigure 1). Preferably, the tool is formed from a metal~
11 The invention operates on the principal that as the 12 tool 12 is advanced in the direction of the right-hand arrow 13 in Figure 2, some oÇ the soil 24 through which the tool 12 14 is moving lodges in the hollow portion of the tool 12, building up to a forward edge 26 which acts as a working 16 edge. Having the working edge formed from the soil itself 17 reduces wear on the metal parts of the tool, and thus the 18 need to replace the tool so often is also reduced.
19 Figures 3 and 4 show details of alternative leading edges of walls 14, 16 (and of walls 20, 22) (not shown)) 21 which may enhance the reduction of wear. Figure 3 shows 22 ang~ed leading edges, and Figure 4 shows leading edges 23 havin~ recesses. Of course, other end profiles could be 24 used, and it is also clear that any shape of tool could be used, provided that the tool allowed for the build-up of a 26 cutting edge or surface using the material through which the 27 tool is to be or is being moved. Other examples of tool 28 shapes are shown in Figures 5 to 10 and described 29 hereinafter.
870930,!jcspe.006,mitchusa.spe, . .
, , ' .: ~ . , . ' ~28~i807 In Figures 2 and 4, the relative movement of soil to 2and past the edge 26 is shown by the smaller arrows. It is 3considered that aspects of fluid ~low kheory may be used to 4explain the operation of the invention, as soil (and other 5media formed from solid particles) may under certain 6circumstances be seen as approximating a fluid.
7Turning now to Figures 5 to 7, there i8 illustrated a 8tine 110 including an attachment portion 112 (which may take 9any form, not jus~ the one illustrated, which has depending 10curved walls 114 for a press-fit to a tine holder (not 11shown)). ~n aperture 113 is pro~Jided for a more 12conventional attachment to a tine holder, by a bolt, pin or 13the like. Working body 116 is generally triangular in 14shape, with a curved structure providing a convex upper 15surface.
16Extending around the soil-working edge 118 of the body 17116 there is a recess 120, which may be of any suitable 18depth. Body 116 may be constructed by using an upper 19element and a lower element, welded or otherwise secured 20together so as to leave a space between the elements, at 21least at the working area 118, or may be formed in a single 22piece.
23As described earlier, the recess or the like 120, in 24use, fills with the soil being worked, thereby producing a 25wearing surface from the soil itself.
26The tool 200 of Figure 8 is similar to that of Figures 275 to 7, except that body 202 has a notcb 204 in the 'point' 28area. Recess 206 extends along the entire working edge.
29 Aperture 213 corresponds to aperture 113 in Figures 5 to 7.
A 870930,!jcspe.006,mitchusa.spe, .
- . . - - ~ ~ , : , .
:
~ ~58~)7 1 Figure 9 shows a tool 300 which is also similar to that 2 of Figures 5 to 7. Body 302 has a 'shovel' nose 304.
3 Again, a recess 306 runs along the worlcing area of the tool, 4 and an aperture 213 is provided, similar to aperture 113.
Flnally, the tool 400 of Figure 10 is also similar to 6 that of Figures 5 to 7, except that body 402 has portiorls 7 404, 406, in effect, cut out, leaving a leading portion 408 8 and 'wings' 410, 412. Recess 414 extends along the working 9 areas, and aperture 413 is used to attach the tine 400 to a tine holder.
11 In each of the embodiments, the preferred material is 12 mild steel, it being discovered that the minimization of 13 wear allows a softer ma~erial to be used.
14 ~lthough the manner in which wear is minimized is not well understood, it is a fact that in tests of the tools of 16 Figures 5 to 10, it has been demonstrated that wear is 17 significantly reduced, in comparison with conventional 18 tools.
19 It is to be understood that in working other media, the tool or the like may be formed from other materials. For 21 example, for some softer media, the tool may be formed of a 22 plastics material.
A
870930,!jcspe.006,mitchusa.spe, , . . . : . , - . .
Claims (8)
1. A tool for working a medium, said tool comprising a leading edge portion, means for positioning the leading edge portion within the medium continuously during use and for advancing said leading edge portion through said medium in a single direction during use, said leading edge having a recess therein for collecting a portion of said medium when said tool is advanced through said medium, said leading edge and said recess being configured so as to advance part of said portion of said medium ahead of said leading edge such that it forms a wearing surface which minimizes wear on said leading edge.
2. A tool according to claim 1 comprising a generally hollow body formed by side walls, top and bottom walls, and a rear wall, there being an opening at the front of said body through which said portion of the medium may pass to fill the interior of said body, and provide said wearing edge.
3. A tool according to claim 1 wherein the tool is a tine adapted to be attached to a tine holder, the tine having a generally V-shaped leading edge.
4. A tool according to claim 3 wherein said tine includes an attachment portion adapted to be press-fitted to a tine holder.
5. A tool according to claim 1 wherein the tool is a tine having a generally V-shaped leading edge, there being a V-shaped notch in the point of the V-shape.
6. A tool according to claim 1 wherein said tool is a tine and has a generally V-shaped leading edge, there being a cut-off portion at the point of said V-shape.
7. A tool according to claim 1 wherein the tool is a tine, the tine having a generally V-shaped leading edge with two winged portions.
8. A tool for working a medium, said tool having a leading edge, said leading edge having a recess therein defined by a pair of spaced generally parallel walls for collecting a portion of said medium when said tool is advanced through said medium, such that said portion of said medium forms a wearing edge.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPH852986 | 1986-09-30 | ||
| AUPH8259 | 1986-09-30 | ||
| AUPI264687 | 1987-06-22 | ||
| AUPI2646 | 1987-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1285807C true CA1285807C (en) | 1991-07-09 |
Family
ID=25643188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000548298A Expired - Lifetime CA1285807C (en) | 1986-09-30 | 1987-09-30 | Tool for working a medium |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1285807C (en) |
-
1987
- 1987-09-30 CA CA000548298A patent/CA1285807C/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |