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WO1988000004A1 - Unite coupe-bordures multidirectionnelle - Google Patents

Unite coupe-bordures multidirectionnelle Download PDF

Info

Publication number
WO1988000004A1
WO1988000004A1 PCT/AU1987/000179 AU8700179W WO8800004A1 WO 1988000004 A1 WO1988000004 A1 WO 1988000004A1 AU 8700179 W AU8700179 W AU 8700179W WO 8800004 A1 WO8800004 A1 WO 8800004A1
Authority
WO
WIPO (PCT)
Prior art keywords
arm
bracket
edging
clamp
directional
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
Application number
PCT/AU1987/000179
Other languages
English (en)
Inventor
Maxwell Kenneth Ould
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO1988000004A1 publication Critical patent/WO1988000004A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D43/00—Mowers combined with apparatus performing additional operations while mowing
    • A01D43/16—Mowers combined with apparatus performing additional operations while mowing with lawn edgers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • This invention relates to a multi-directional edging assembly in the form of an edging attachment for a motor mower and in particular relates to an edging attachment that may be bolted onto the frame of a motor mower to provide a multi-directional edging facility-
  • PCT/AU85/00208 I disclose an edging assembly that can be bolted to the- housing of a- mower of the kind having a horizontally rotatable cutting blade supported beneath the housing and rotatable by a substantially vertically extending shaft driven by suitable petrol engine.
  • the edging attachment comprises a plate which is bolted to the mower housing, the plate supporting a drive shaft carrying an idler pulley and a drive pulley.
  • a drive belt interconnects a pulley on the motor of the mower to either the idler pulley or the drive pulley and means is provided to selectively engage either the idler or drive pulley.
  • the edging attachment further includes edging means operating in a plane substantially perpendicular to the cutting plane of the mower.
  • the edging means is supported by the plate via a boom and is driven by the drive shaft via a flexible spindle. Although the boom allows adjustment of the cutting angle of the edging means the boom is secured to the plate at one side of the plate and only allows the edging facility to be operable at one side of the mower.
  • the present invention is concerned with increasing the versatility and range of operation of the edging means to allow the edging facility to be used in situations that would normally be inaccessible-
  • a multi-directional edging assembly for attachment to the housing of a motorised lawn mower comprising an edging means supported by a bracket that is secured to one end of an arm to pivot thereto in the plane of the arm, the opposite end of the arm being pivotally secure to " a ⁇ mo ⁇ nting plate that is arranged to be detachably secured to the housing of the mower, a clamp fastened to the arm to bridge the adjacent edges of the bracket and the mounting plate, the clamp being capable of tilting relative to the arm, the edge of the bracket including an inclined ramp positioned so that when the bracket is pivoted relative to the arm to be on either side of the longitudinal axis of the arm the ramp engages the arm and the clamp to cause the clamp to tilt so that its opposite edge is forced into engagement with the edge of the mounting plate, and when the bracket is axially aligned with the arm the ramp is out of engagement with the clamp thereby releasing the forced engagement of the opposite edge of the clamp with the mounting plate thereby releasing the arm for pivotal movement relative to
  • releasable latching means is furnished on
  • the edging means is attached to the bracket to extend in a plane substantially perpendicular to the plane of the bracket.
  • the bracket include means to adjust the angle between the plane of the edging means the plane of the bracket.
  • Figure 1 is a perspective view of an edging assembly
  • Figures 2a and 2b are respectively plan and side elevational views of a component of an arm assembly of the 20 edging assembly illustrated in Figure 1 showing the arm in the locked position;
  • Figures 3a and 3b are respectively plan and side elevational views of the arm assembly in the locked position.
  • the edging assembly illustrated in Figure 1 is 25 similar to the assembly illustrated in my earlier
  • the edging assembly comprises support plate 10 that can be bolted to the upper surface of the housing (not shown) of a rotary mower, the support plate 10 has welded -thereto-a piece of hollow pipe 13 that supports a pulley assembly 20 that includes coaxial idler and drive pulleys 21 and 22 35 coupled to a flexible spindle drive 150, a bowden cable 39 coupled to a drive control mechanism 40 that has the effect of selectively causing a belt 41 driven by a primary pulley 42 mounted on the motor of the mower (not shown) from either the idler pulley 21 or the drive pulley 22.
  • the spindle drive 150 is coupled to an edge cutter assembly 110 that is mounted on a boom assembly 200 for pivotal rotation in both horizontal and vertical planes.
  • the cutter assembly 110 includes a proprietary edge cutter in the form of a strip of nylon 119 that is wound onto a spool 111 that is, in turn, spring loadedly mounted within a rotatable drum 112. Details of the drum and its attachment to the support assembly and drive by the flexible drive are disclosed in my earlier patent specification and are not described herein.
  • the present invention relates to details of the boom 200 and its association with the edge cutter assembly 110.
  • the boom assembly 200 comprises an elongate steel arm 201, one end 198 of which is attached to the centre of the support plate 10 by a bolt 199 so that the arm 201 is pivotable thereto.
  • the front surface 202 of the support plate is provided with an arcuate edge with the centre of curvature corresponding to the central pivot point of the arm 201.
  • the arm 201 terminates at its free end 204 in an outer bracket 205, details of which are described later.
  • the outer bracket 205 supports a pair of parallel spaced arms 211 and 212 that clampingly engage -a vertically extending flange 206 that has secured to one end thereof a sleeve 207 that supports the edge cutter 110.
  • the sleeve 207 also supports a collar 208 from which a guard 209 projects.
  • a clamping lever 210 cooperates with the collar 208 to allow adjustment of the position of the guard 209 relative to the edge cutter 110.
  • An adjustable lock nut 214 allows the flange 206 to pivot about the lock nut between the arms 211 and 212. The degree of pivotal movement is controlled by the location of a bolt 215 within an arcuate slot 216 provided in the flange 206. Displacement of the flange 206 relative to the arms 211 and 212 allows adjustment of the inclination of the edge cutter 110 relative to the vertical.
  • the arrangement is such that the angle of the cutter may be inclined outwardly up to an angle of 25 from the vertical or inwardly up to an angle of 6 from the vertical.
  • This tilting of the cutter allows the choice of either a straight cut when the cutter is in the vertical or a bevelled cut as the cutter is inclined.
  • This also has the feature of allowing the cutter to operate under fences or sleeper edges, around bushes and trees. The range of the cutting action is substantially increased by this tilting feature.
  • the angle can be adjusted and then the cutter can be held in this position by tightening up the lock nut thereby clamping the flange 206 within the arms 211 and 212.
  • the edging assembly is also designed so that it can be used on either side of the mower or at an intermediate position at the front of the mower.
  • the arm 201 is mounted to be pivotable about the support plate 10. The pivoting movement is restricted by the arc of the front surface 202 which allows the edge cutter to be positioned on either side of the mower.
  • the outer bracket 205 is pivotally secured to the end 204 of the arm 201 by a nut and bolt assembly 220.
  • the inner edge of the outer bracket 205 is provided with a cam assembly (not shown in Figure 1).
  • a trigger 222 is mounted between the spaced parallel arms 211 and 212 and is spring loaded to be urged against- an arcuate edge 1 223 at the end 204 of the arm 201.
  • This edge is provided with two rectangular cut-outs 224 and 225 into which the trigger engages to in effect lock the position of the outer bracket 205 relative to the inner arm 201 in one position that allows the cutter assembly to be used on the left hand side of the mower and a second position that allows the cutting assembly to be used on the right hand side of the mower.
  • a clamp 230 is attached to the under side of the arm 201 by a bolt 232 to extend between the arcuate edge 202 of the front of the support plate 10 and the cam surface (not shown in Figure 1) at the inner end of the outer bracket 205. Details of this assembly and operation are illustrated with reference to Figures 2a, 2b, 3a and 3b.
  • the lateral edges of the clamp 230 are provided with a rebate 242 and 243 that are arranged to be positioned respectively under the arcuate edge 202 of the support plate 10 and under a bevelled arcuate edge 244 formed on the bracket 205.
  • the bevelled edge 244 of the bracket 205 increases in thickness towards the extremities of the arc of the edge with the portion of minimum thickness being at the centre of the arc. Accordingly, when the bracket 205 is locked into one of the operative positions shown in Figure 1, that is with the spring trigger 222 engaged in either the notch 224, 225 in the arcuate edge 223 of the arm 201, the thicker portion of the bevelled edge 224 engages the rebate 243 on the clamp 230.
  • the bracket By releasing the trigger lock 222 to free the bracket 205 from its latch—posit-ion * , the bracket can then be moved so that its longitudinal axis is coincident with the longitudinal axis of the cam 201 (see Figures 2a and 2b) .
  • the clamping assembly acts as an important safety device ensuring that the arm cannot move when the edging assembly is in the operative 10 position.
  • the clamping force has the effect of preventing accidental displacement of the arm whilst at the same time allowing the assembly to absorb knocks and bumps that it will be subject to in use.
  • the operator releases the trigger lock 222 to unlatch 15 the bracket 205, pivots the bracket to be coaxial with the arm thereby uncla ping the arm and then pivots the whole assembly to the desired operative position.
  • the assembly is relocked by latching the bracket in either one of the latched positions defined by the notches 224 and 225.
  • the guard 209 that has quick release pivotal association with the sleeve 208 that supports the edging assembly, allows the guard to be positioned at any desired angle.
  • the g ⁇ ard may be positioned forwardly of the edging assembly to facilitate lifting of flowers and small 25 bushes over the cutter.
  • guard 209 may be simple removed from the sleeve 208 in circumstances where extra cutting cord is required such as when the mower is used around the edges of 30 ponds.
  • V-shaped cutting blade 250 is forwards edge 251.
  • This V-shaped cutting blade has the effect of causing the line 119 to be trimmed so that it does not project past the guard 209 35 in use.
  • the edge 201 of the guard Once the machine operates with the guard lowered the edge of the line 119 extending past the guard will be cut off by the V-shaped cutting blade 250 thereby ensuring that the rotational path of the line is always within the guard.
  • a guiding line may be applied to the top of the guard 209 to enable the user to line up the line with the edge of the lawn or concrete border.
  • the assembly described above gives the user of the mower increased versatility in that the edging means may be used at either side of the mower or at the front of the mower. Furthermore, the edging assembly can be tiltered both inwardly and outwardly from the vertical to both increase the range of cutting action and vary the cut produced.
  • the assembly has been designed to incorporate desirable safety features without jeopardising the simplicity and versatility of use.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)

Abstract

Une unité coupe-bordures multidirectionnelle, destinée à être fixée au carter d'une tondeuse à gazon à moteur, comprend un outil coupe-bordures (110) fixé à une patte de serrage (205), laquelle est fixée à son tour à un bras (201) relié de façon pivotante au carter. Une bride de serrage (203) maintient le bras (201) en position fixe contre le carter de chaque côté de la tondeuse. Ladite unité comporte en outre un organe à interactions destiné à bloquer de façon sélective ladite unité en position fixe de chaque côté de la tondeuse.
PCT/AU1987/000179 1986-06-24 1987-06-23 Unite coupe-bordures multidirectionnelle Ceased WO1988000004A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU655186 1986-06-24
AUPH6551 1986-06-24

Publications (1)

Publication Number Publication Date
WO1988000004A1 true WO1988000004A1 (fr) 1988-01-14

Family

ID=3697095

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1987/000179 Ceased WO1988000004A1 (fr) 1986-06-24 1987-06-23 Unite coupe-bordures multidirectionnelle

Country Status (1)

Country Link
WO (1) WO1988000004A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6938699B2 (en) * 2001-04-12 2005-09-06 Turf Teq, Llc Variable angle powered work implement

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183651A (en) * 1963-05-22 1965-05-18 Harry H Hoefler Mowing apparatus
US3183652A (en) * 1964-11-25 1965-05-18 John T Pratt Lawn mowing and trimming apparatus
US3192693A (en) * 1963-07-02 1965-07-06 Bergeson Ragnvald Trimmer attachment for power lawn mower
US3193996A (en) * 1963-07-12 1965-07-13 Howell H Wellborn Lawn edger and trimmer
US3698165A (en) * 1971-03-03 1972-10-17 Ernest W Keesee Edger for lawn mower
US4152882A (en) * 1976-09-03 1979-05-08 Howard Tyson W Vegetation cutting assembly
US4453372A (en) * 1983-02-28 1984-06-12 Remer Fred J Grass edger and trimmer attachment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183651A (en) * 1963-05-22 1965-05-18 Harry H Hoefler Mowing apparatus
US3192693A (en) * 1963-07-02 1965-07-06 Bergeson Ragnvald Trimmer attachment for power lawn mower
US3193996A (en) * 1963-07-12 1965-07-13 Howell H Wellborn Lawn edger and trimmer
US3183652A (en) * 1964-11-25 1965-05-18 John T Pratt Lawn mowing and trimming apparatus
US3698165A (en) * 1971-03-03 1972-10-17 Ernest W Keesee Edger for lawn mower
US4152882A (en) * 1976-09-03 1979-05-08 Howard Tyson W Vegetation cutting assembly
US4453372A (en) * 1983-02-28 1984-06-12 Remer Fred J Grass edger and trimmer attachment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6938699B2 (en) * 2001-04-12 2005-09-06 Turf Teq, Llc Variable angle powered work implement

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