CA2504073A1 - Securing device for knock-on earthworking tool - Google Patents
Securing device for knock-on earthworking tool Download PDFInfo
- Publication number
- CA2504073A1 CA2504073A1 CA 2504073 CA2504073A CA2504073A1 CA 2504073 A1 CA2504073 A1 CA 2504073A1 CA 2504073 CA2504073 CA 2504073 CA 2504073 A CA2504073 A CA 2504073A CA 2504073 A1 CA2504073 A1 CA 2504073A1
- Authority
- CA
- Canada
- Prior art keywords
- tail portion
- adaptor
- retainer according
- depression
- spring element
- 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.)
- Granted
Links
- 238000004873 anchoring Methods 0.000 claims abstract 10
- 244000273618 Sphenoclea zeylanica Species 0.000 claims abstract 4
- 230000000295 complement effect Effects 0.000 claims abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract 1
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
- A01B35/00—Other machines for working soil not specially adapted for working soil on which crops are growing
- A01B35/20—Tools; Details
- A01B35/22—Non-rotating tools; Resilient or flexible mounting of rigid tools
- A01B35/225—Non-rotating tools; Resilient or flexible mounting of rigid tools the tools being adapted to allow the chisel point to be easily fitted or removed from the shank
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Working Implements (AREA)
- Clamps And Clips (AREA)
Abstract
A retainer is disclosed for preventing accidental release of a knock-on earthworking tool from the tine of an agricultural implement. The retainer comprises a tapered adaptor to be secured to the agricultural implement and which is complementary with the hollow stem of the earthworking tool, and further comprises a resilient spring element secured to the upper surface of the adaptor inside a longitudinal depression. The .spring element is integrally formed from a single piece of metal, comprises an anchoring portion which is secured within the longitudinal depression in the adaptor which and a tail portion which catches in an aperture in the stem of the earthworking tool when the stem is wedged over the adaptor in its normal working position, thereby preventing accidental dislodgement of the earthworking tool during use.
Claims (13)
1. A retainer for releasably securing a knock-on earthworking tool to an agricultural implement, wherein the earthworking tool comprises an earthworking portion and a hollow stem, the stem has a front wall with an aperture therein and the aperture has a peripheral edge, the retainer comprising:
(a) an elongate tapered adaptor complementary with the hollow stem of the earthworking tool, wherein the adaptor has a rear end, a relatively narrower front end, a lower surface and an upper surface provided with an elongate depression extending parallel to an axis of the adaptor; and (b) a resilient spring element comprising an anchoring portion and an elongate tail portion having a first end and a second end, wherein the first end of the tail portion is secured to the anchoring portion and the second end of the tail portion is free, the anchoring portion is secured to the upper surface of the adaptor inside the longitudinal depression and the tail portion extends axially from the anchoring portion along the elongate depression, and the second end of the tail portion protrudes from the elongate depression when the spring element is in an uncompressed state;
wherein, with the adaptor wedged inside the hollow stem of the earthworking tool in a normal working position, with the earthworking portion of the tool extending forwardly of the front end of the adaptor, and with the upper surface of the adaptor directly opposing the front wall of the stem; the anchoring portion of the spring element is axially spaced from the aperture in the stem in a direction toward the front end of the adaptor and the second end of the tail portion is received in the aperture.
(a) an elongate tapered adaptor complementary with the hollow stem of the earthworking tool, wherein the adaptor has a rear end, a relatively narrower front end, a lower surface and an upper surface provided with an elongate depression extending parallel to an axis of the adaptor; and (b) a resilient spring element comprising an anchoring portion and an elongate tail portion having a first end and a second end, wherein the first end of the tail portion is secured to the anchoring portion and the second end of the tail portion is free, the anchoring portion is secured to the upper surface of the adaptor inside the longitudinal depression and the tail portion extends axially from the anchoring portion along the elongate depression, and the second end of the tail portion protrudes from the elongate depression when the spring element is in an uncompressed state;
wherein, with the adaptor wedged inside the hollow stem of the earthworking tool in a normal working position, with the earthworking portion of the tool extending forwardly of the front end of the adaptor, and with the upper surface of the adaptor directly opposing the front wall of the stem; the anchoring portion of the spring element is axially spaced from the aperture in the stem in a direction toward the front end of the adaptor and the second end of the tail portion is received in the aperture.
2. The retainer according to claim 1, wherein the anchoring portion and the tail portion of the spring element are obtusely angled relative to one another.
3. The retainer according to claim 1 or 2, wherein the anchoring portion is parallel to the upper surface of the adaptor and the tail portion is angled relative to the upper surface of the adaptor, such that a portion of the tail portion proximate the first end is received in the depression and a portion of the tail portion proximate the second end protrudes from the depression in the upper surface of the adaptor when the spring element is in its uncompressed state.
4. The retainer according to any one of claims 1 to 3, wherein the anchoring portion of the spring element is secured inside the depression by a threaded fastener.
5. The retainer according to claim 4, wherein an upper surface of the threaded fastener does not substantially protrude from the depression:
6. The retainer according to any one of claims 1 to 5, wherein the anchoring portion and the tail portion are integrally formed from a steel blank.
7. The retainer according to any one of claims 1 to 6, wherein the second end of the tail portion is shaped to conform to the shape of the aperture in the stem.
8. The retainer according to claim 7, wherein the second end of the tail portion is rounded.
9. The retainer according to any one of claims 1 to 8, wherein the elongate depression has a length, width and depth sufficient to permit the entire tail portion to become received inside the depression when the spring element is fully compressed.
10. The retainer according to any one of claims 1 to 9, wherein the tail portion is generally flat.
11. The retainer according to any one of claims 1 to 9, wherein the tail portion is convexly curved along at least a portion of its length.
12. The retainer according to claim 11, wherein the convexly curved portion of the tail portion has substantially flat longitudinal edges.
13. The retainer according to claim 11 or 12, wherein the free end of the tail portion is convexly curved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2504073A CA2504073C (en) | 2005-04-13 | 2005-04-13 | Securing device for knock-on earthworking tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2504073A CA2504073C (en) | 2005-04-13 | 2005-04-13 | Securing device for knock-on earthworking tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2504073A1 true CA2504073A1 (en) | 2006-10-13 |
| CA2504073C CA2504073C (en) | 2012-01-10 |
Family
ID=37101430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2504073A Active CA2504073C (en) | 2005-04-13 | 2005-04-13 | Securing device for knock-on earthworking tool |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2504073C (en) |
-
2005
- 2005-04-13 CA CA2504073A patent/CA2504073C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2504073C (en) | 2012-01-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |