GB2476268A - Coil spring actuated lawn aerator - Google Patents
Coil spring actuated lawn aerator Download PDFInfo
- Publication number
- GB2476268A GB2476268A GB0922048A GB0922048A GB2476268A GB 2476268 A GB2476268 A GB 2476268A GB 0922048 A GB0922048 A GB 0922048A GB 0922048 A GB0922048 A GB 0922048A GB 2476268 A GB2476268 A GB 2476268A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stub
- cam
- coil spring
- roller16is
- spring actuated
- 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.)
- Withdrawn
Links
- 238000005276 aerator Methods 0.000 title abstract description 6
- 239000004677 Nylon Substances 0.000 abstract description 7
- 229920001778 nylon Polymers 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 230000002028 premature Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 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
- A01B45/00—Machines for treating meadows or lawns, e.g. for sports grounds
- A01B45/02—Machines for treating meadows or lawns, e.g. for sports grounds for aerating
- A01B45/023—Perforators comprising spiking tools actively driven in a reciprocating movement through a crankshaft or eccentric mechanism
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Working Implements (AREA)
Abstract
A coil spring actuated lawn aerator comprises a drive wheel9having a cam8, a pivoting actuating arm6having a stub axle15mounted thereon which is integrally moulded with a cam follower5which is mounted upon the pivoting arm6. A roller15is positioned on the stub axle16, the roller15being manufactured from a material which is harder than the material of the stub axle16and/or cam follower5. The roller16is able to rotate freely around the stub axle15. The roller16is collected by the cam8as the drive wheel9rotates. Lateral movement of the roller16is restricted by the face of drive wheel9. The cam follower and stub axle15may be made of nylon and the roller16may be made of stainless steel.
Description
AN IMPROVEMENT (2) TO COIL SPRING ACTUATED LAWN AERATORS UK Patent Application GB 2 436 511 A reveals a coil spring actuated lawn aerator.
Whilst the aerator functions as in the afore mentioned patent with the nylon cam followers 4 integrated into the nylon moulded headed units 5 sliding over and up the cams 8 integral with nylon drive wheel 9, wearing of the said cam followers 4 and said cams 8 takes place at the point where they meet. The said wear is exacerbated by mud and grit which finds its way between the cam followers 4 and cams 8 moreover the consequent abrading action can lead to over heating and softening of the nylon moulding material leading to premature failure. This invention embodies the resolution to the above mentioned shortcomings by introducing a means to ameliorate the above said wear and premature failure.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Figure 1. is a general anangement drawing of the invention.
Figure 2. Is a "transparent" schematic representation of the invention where the actuating arm is set at a point when the rotational action of wheel 9 has brought cam 8 in contact with the roller 16.
Figure 3. Is a "transparent" schematic representation of the invention where the actuating arm is set at a point when the rotational action of wheel 9 has brought the roller 16 to its lowest point.
Figure 4. Is a "transparent" schematic representation of the invention where the actuating arm is set at a point when the rotational action of wheel 9 has brought the roller 16 to the top of cam 8.
For clarity in none of the figures above is the power source or the chassis of the machines carrying manifestations of the invention shown.
Referring to the drawings the improvements to coil spring actuated lawn aerator as revealed in UK Patent Application GB 2436 511 A comprise a stub axle 15 which stub axle is integrally moulded into the nylon cam follower S which said cam follower is mounted upon pivoting actuating arm 6 onto said stub axle 15 is positioned roller 16 which roller is manufactured from a material harder than nylon -in this example, stainless steel -there being sufficient clearance between roller 16 and stub axle 15 for the roller 16 to rotate freely around stub axle 15 the roller 16 is collected by the cam 8 [Fig 2] as a factor of the rotational action of drive wheel 9 successively the roller 16 rotates around said stub axle 15 and along the said cam 8 until it reaches the top of said cam 8 [Fig 3] thence to the lowet point possible [Fig 4] the cycle is continuous with the roration of drive wheel 9. Roller 16 is retained on the axle as a factor of its lateral movement being restricted by the face of drive wheel 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0922048A GB2476268A (en) | 2009-12-17 | 2009-12-17 | Coil spring actuated lawn aerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0922048A GB2476268A (en) | 2009-12-17 | 2009-12-17 | Coil spring actuated lawn aerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0922048D0 GB0922048D0 (en) | 2010-02-03 |
| GB2476268A true GB2476268A (en) | 2011-06-22 |
Family
ID=41717102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0922048A Withdrawn GB2476268A (en) | 2009-12-17 | 2009-12-17 | Coil spring actuated lawn aerator |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2476268A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB792798A (en) * | 1954-02-26 | 1958-04-02 | Wilfred Ellis | Turf spiker and aerator |
| US3136274A (en) * | 1960-09-12 | 1964-06-09 | Kriken Machine Mfg Company | Lawn perforator |
| US3163236A (en) * | 1962-10-30 | 1964-12-29 | John C Ray | Soil spiking machine |
| GB1347967A (en) * | 1971-06-14 | 1974-02-27 | Sisis Equipment Macclesfield | Turf piercing machines |
| GB2436511A (en) * | 2006-03-29 | 2007-10-03 | Miles Roland William Bozeat | Coil spring actuated lawn aerator |
-
2009
- 2009-12-17 GB GB0922048A patent/GB2476268A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB792798A (en) * | 1954-02-26 | 1958-04-02 | Wilfred Ellis | Turf spiker and aerator |
| US3136274A (en) * | 1960-09-12 | 1964-06-09 | Kriken Machine Mfg Company | Lawn perforator |
| US3163236A (en) * | 1962-10-30 | 1964-12-29 | John C Ray | Soil spiking machine |
| GB1347967A (en) * | 1971-06-14 | 1974-02-27 | Sisis Equipment Macclesfield | Turf piercing machines |
| GB2436511A (en) * | 2006-03-29 | 2007-10-03 | Miles Roland William Bozeat | Coil spring actuated lawn aerator |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0922048D0 (en) | 2010-02-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |