CA2941574A1 - Methods and devices for cutting vegetation - Google Patents
Methods and devices for cutting vegetation Download PDFInfo
- Publication number
- CA2941574A1 CA2941574A1 CA2941574A CA2941574A CA2941574A1 CA 2941574 A1 CA2941574 A1 CA 2941574A1 CA 2941574 A CA2941574 A CA 2941574A CA 2941574 A CA2941574 A CA 2941574A CA 2941574 A1 CA2941574 A1 CA 2941574A1
- Authority
- CA
- Canada
- Prior art keywords
- mower
- wheel assembly
- deck
- lawn mower
- cutting
- 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.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/67—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator
- A01D34/68—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/74—Cutting-height adjustment
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
Abstract
The present invention relates to improvements in a power lawn mower for mowing lawns or cutting vegetation. More specifically, it has reference to lawn mowers of the so called rotary type having cutter blades which revolve about vertical axes. Mowers of the kind particularly referred to are ordinarily provided with supporting wheels respectively at opposite sides and ends of the mower deck As a consequence of this usual disposal of the wheels, the mowers could not be used for cutting close to fences, walls or to the edges of flower beds and such, and when one or more wheels drops over an edge of lawn the blade is lowered becomes angled and 'scalps' the area and further the front wheels also detrimentally compact the grass before the blade has a chance to cut it making for uneven cuts.
The present invention relates to improvements in a power lawn mower for mowing lawns or cutting vegetation to overcome these limitations.
The present invention relates to improvements in a power lawn mower for mowing lawns or cutting vegetation to overcome these limitations.
Description
Description BACKGROUND OF THE INVENTION
1. Field of the Invention The present invention relates to improvements in a power lawn mower for mowing lawns or cutting vegetation.
1. Field of the Invention The present invention relates to improvements in a power lawn mower for mowing lawns or cutting vegetation.
2. Description of the Related Art .
It is well known to provide a power operated lawn mower wherein a cutting element is driven for rotation by means of a suitable prime mover to sever grass particles or other vegetation at a predetermined height above the ground. Such a cutting element may either be a rigid steel blade or a flexible mono-filament line. Also, a prime mover may either be an integral combustion engine or an electric motor. One example of such power operated lawn mowers is shown in U.S. Pat. No. 4,244,160.
The patented mower generally comprises a blade housing supported by ground wheels and having a mowing deck with front and rear aprons, and an internal combustion engine mounted on the top of the deck and having a vertical output shaft to which a cutting blade is fixed.
An opening is located at one side of the deck and the shape of the deck is shaped such as to define a clipping guide channel.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a new and improved power lawn mower with a new wheel design arrangement or assembly that overcomes the limitations of current designs utilizing contemporary 3 or 4 wheel configurations.
In accordance with the present invention, there is provided a power lawn mower comprising a deck supporting an engine for powering a blade, wheels for supporting the entire assembly off the ground and a handle and related assembly for controlling and or pushing the mower.
The rear wheel assembly comprising two rearwardly mounted wheels with adjustable height means located inside of the outer circumference of the mowing deck so that the side edges of the mower deck will contact whatever object it may encounter prior to the rear wheels.
The front wheel assembly with adjustable height means being located within the confines of the mower deck, positioned so that the rolling assembly is located behind the front edge of the mowing deck so that front edge of the mower deck contacts whatever object it may encounter prior to the front wheels and the front wheel assembly is behind the leading edge of the cutting blade so that the grass is always cut prior to being rolled on by the front wheel assembly. The front wheel assembly attaching to the mower means at the terminus of the engine blade driving means, which is generally the end of the crankshaft engine means. In such arrangements this can be achieved by attaching directly to the end of the engine crankshaft means or by providing a secondary assembly between the engine blade driving crank means and the wheel assembly attaching means to prevent pressure from the wheel assembly being applied to the crankshaft of the engine. In either case the wheel assembly is attached to the same rotary assembly means that powers the cutting blade.
This beneficial wheel arrangement leaves the entire mowing deck clear of exterior parts or assemblies that would prevent the mowing blade from reaching all boundaries of a lawn be they fences, flower beds, walkways, etc. as well as allowing the mowing blade to cut the grass prior to being rolled over by any or all of the wheels, providing for a better more consistent cut. Another beneficial aspect of the current invention is to prevent the 'scalping' of the lawn when a wheel drops off the edge of a lawn tilting the blade and shortening the distance between the blade and the surface, 'scalping' the surface and damaging the surface and the mowing blade. The present invention would allow for approximately half of the distance of the circumference of the mowing deck to be positioned over the target cutting area without having a single wheel leaving the mowing surface or having a wheel contacting a tree or shrub or flower bed etc. that normally would prevent the mower from effectively trimming those areas.
BRIEF DESCRIPTION OF THE DRAWINGS
Other objects, aspects and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a pictorial representation of a power lawn mower with an internal combustion engine by which a cutting blade is driven for rotation according to the prior art;
FIG. 2 is a bottom view of a power lawn mower with a cutting blade according to the prior art;
FIG. 3 is a top plan view of the power lawn mower deck as envisioned; and FIG. 4 is a front sectional schematic view of the proposed mower with the location of the front wheels of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings and initially to FIG. 1, there is shown the prior art of a power lawn mower which comprises a mower deck 100 supported on a pair of front wheels 150 and a pair of rear wheels 140. For the purpose of guiding the power lawn mower on a lawn, the deck assembly 100 is interconnected to a handle assembly 210. An engine 200 is mounted on the deck 100 and is controlled through the handle assembly 210. Whilst the engine 200 is shown as being an internal combustion engine, it will be understood that other power means such as an electric motor may be used. The engine 200 also has a vertical output shaft 110 (FIG. 4).
In FIG. 2 is the prior art of a power lawn mower with the bottom of deck assembly 100 of the prior art that has rear wheels 140 and front wheels 150 and driven blade 160.
In FIG 3 of the illustrated embodiment of the invention is a top view of the proposed mower deck 100 with rear wheels 140 located within the confines of the circumference of the mower deck 100. By utilizing a vegetation guide 170 on the side of the mower deck 100 vegetation may be pulled into the circumference of the cutting area effectively trimming vegetation that may otherwise be missed and or need to be subsequently trimmed by other means. By utilizing a swiveling arrangement for the rear wheels and in concert with the proposed front wheel assembly the turning mobility of the lawn mower can be enhanced.
In FIG 4 of the illustrated embodiment of the invention is a schematic frontal view of the mower deck 100 with drive shaft 110 for powering the cutting blade 120 and the preferential location of the front wheel assembly 130 wherein it is attached to the rotary driving member. The front assembly may comprise of one (illustrated) or more wheels to support the mower deck.
While there has been described what is at present considered to be the preferred embodiment of the invention, it will be understood that the invention is not limited thereto, and that various changes and modifications may be made therein without departing from the scope thereof.
It is well known to provide a power operated lawn mower wherein a cutting element is driven for rotation by means of a suitable prime mover to sever grass particles or other vegetation at a predetermined height above the ground. Such a cutting element may either be a rigid steel blade or a flexible mono-filament line. Also, a prime mover may either be an integral combustion engine or an electric motor. One example of such power operated lawn mowers is shown in U.S. Pat. No. 4,244,160.
The patented mower generally comprises a blade housing supported by ground wheels and having a mowing deck with front and rear aprons, and an internal combustion engine mounted on the top of the deck and having a vertical output shaft to which a cutting blade is fixed.
An opening is located at one side of the deck and the shape of the deck is shaped such as to define a clipping guide channel.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a new and improved power lawn mower with a new wheel design arrangement or assembly that overcomes the limitations of current designs utilizing contemporary 3 or 4 wheel configurations.
In accordance with the present invention, there is provided a power lawn mower comprising a deck supporting an engine for powering a blade, wheels for supporting the entire assembly off the ground and a handle and related assembly for controlling and or pushing the mower.
The rear wheel assembly comprising two rearwardly mounted wheels with adjustable height means located inside of the outer circumference of the mowing deck so that the side edges of the mower deck will contact whatever object it may encounter prior to the rear wheels.
The front wheel assembly with adjustable height means being located within the confines of the mower deck, positioned so that the rolling assembly is located behind the front edge of the mowing deck so that front edge of the mower deck contacts whatever object it may encounter prior to the front wheels and the front wheel assembly is behind the leading edge of the cutting blade so that the grass is always cut prior to being rolled on by the front wheel assembly. The front wheel assembly attaching to the mower means at the terminus of the engine blade driving means, which is generally the end of the crankshaft engine means. In such arrangements this can be achieved by attaching directly to the end of the engine crankshaft means or by providing a secondary assembly between the engine blade driving crank means and the wheel assembly attaching means to prevent pressure from the wheel assembly being applied to the crankshaft of the engine. In either case the wheel assembly is attached to the same rotary assembly means that powers the cutting blade.
This beneficial wheel arrangement leaves the entire mowing deck clear of exterior parts or assemblies that would prevent the mowing blade from reaching all boundaries of a lawn be they fences, flower beds, walkways, etc. as well as allowing the mowing blade to cut the grass prior to being rolled over by any or all of the wheels, providing for a better more consistent cut. Another beneficial aspect of the current invention is to prevent the 'scalping' of the lawn when a wheel drops off the edge of a lawn tilting the blade and shortening the distance between the blade and the surface, 'scalping' the surface and damaging the surface and the mowing blade. The present invention would allow for approximately half of the distance of the circumference of the mowing deck to be positioned over the target cutting area without having a single wheel leaving the mowing surface or having a wheel contacting a tree or shrub or flower bed etc. that normally would prevent the mower from effectively trimming those areas.
BRIEF DESCRIPTION OF THE DRAWINGS
Other objects, aspects and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a pictorial representation of a power lawn mower with an internal combustion engine by which a cutting blade is driven for rotation according to the prior art;
FIG. 2 is a bottom view of a power lawn mower with a cutting blade according to the prior art;
FIG. 3 is a top plan view of the power lawn mower deck as envisioned; and FIG. 4 is a front sectional schematic view of the proposed mower with the location of the front wheels of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings and initially to FIG. 1, there is shown the prior art of a power lawn mower which comprises a mower deck 100 supported on a pair of front wheels 150 and a pair of rear wheels 140. For the purpose of guiding the power lawn mower on a lawn, the deck assembly 100 is interconnected to a handle assembly 210. An engine 200 is mounted on the deck 100 and is controlled through the handle assembly 210. Whilst the engine 200 is shown as being an internal combustion engine, it will be understood that other power means such as an electric motor may be used. The engine 200 also has a vertical output shaft 110 (FIG. 4).
In FIG. 2 is the prior art of a power lawn mower with the bottom of deck assembly 100 of the prior art that has rear wheels 140 and front wheels 150 and driven blade 160.
In FIG 3 of the illustrated embodiment of the invention is a top view of the proposed mower deck 100 with rear wheels 140 located within the confines of the circumference of the mower deck 100. By utilizing a vegetation guide 170 on the side of the mower deck 100 vegetation may be pulled into the circumference of the cutting area effectively trimming vegetation that may otherwise be missed and or need to be subsequently trimmed by other means. By utilizing a swiveling arrangement for the rear wheels and in concert with the proposed front wheel assembly the turning mobility of the lawn mower can be enhanced.
In FIG 4 of the illustrated embodiment of the invention is a schematic frontal view of the mower deck 100 with drive shaft 110 for powering the cutting blade 120 and the preferential location of the front wheel assembly 130 wherein it is attached to the rotary driving member. The front assembly may comprise of one (illustrated) or more wheels to support the mower deck.
While there has been described what is at present considered to be the preferred embodiment of the invention, it will be understood that the invention is not limited thereto, and that various changes and modifications may be made therein without departing from the scope thereof.
Claims (8)
1. A power lawn mower for mowing lawns and cutting vegetation comprising:
a mowing deck having a top deck and side walls;
a cutting mechanism having a rotary driven cutting means;
a height adjustable rear wheel assembly attached to the mower deck;
a height adjustable front wheel assembly attached to the mower deck rotary driven means.
a mowing deck having a top deck and side walls;
a cutting mechanism having a rotary driven cutting means;
a height adjustable rear wheel assembly attached to the mower deck;
a height adjustable front wheel assembly attached to the mower deck rotary driven means.
2. A power lawn mower as claimed in claim 1 wherein the rear wheel assembly is positioned within the circumference of the mower deck.
3. A power lawn mower as claimed in claim 1 wherein the front wheel assembly is located behind the leading edge of the rotary cutting element.
4 A power lawn mower as claimed in claim 1 wherein the front wheel assembly is positioned within the interior circumference of the mower deck.
5. A power lawn mower as claimed in claim 1 wherein the front wheel assembly attaches to the mower via the cutting element rotary driving member.
6. A power lawn mower front wheel assembly as claimed in claim 4 wherein the wheel assembly attaches directly to the rotary power source.
7. A power lawn mower front wheel assembly as claimed in claim 4 wherein the wheel assembly attaches indirectly to the rotary power source.
8. A power lawn mower that provides for cutting of vegetation prior to having said vegetation being compressed by the rolling action of its wheel assemblies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2941574A CA2941574A1 (en) | 2016-09-13 | 2016-09-13 | Methods and devices for cutting vegetation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2941574A CA2941574A1 (en) | 2016-09-13 | 2016-09-13 | Methods and devices for cutting vegetation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2941574A1 true CA2941574A1 (en) | 2018-03-13 |
Family
ID=61617223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2941574A Abandoned CA2941574A1 (en) | 2016-09-13 | 2016-09-13 | Methods and devices for cutting vegetation |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2941574A1 (en) |
-
2016
- 2016-09-13 CA CA2941574A patent/CA2941574A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20190913 |