GB1526519A - Cutter disc assembly for rotary lawn mower - Google Patents
Cutter disc assembly for rotary lawn mowerInfo
- Publication number
- GB1526519A GB1526519A GB35376/76A GB3537676A GB1526519A GB 1526519 A GB1526519 A GB 1526519A GB 35376/76 A GB35376/76 A GB 35376/76A GB 3537676 A GB3537676 A GB 3537676A GB 1526519 A GB1526519 A GB 1526519A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pins
- peripheral portion
- held
- disc
- grooves
- 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
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
- A01D34/416—Flexible line cutters
- A01D34/4168—Constructional details of the flexible lines
-
- 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
- A01D34/416—Flexible line cutters
- A01D34/4166—Mounting or replacement of the lines
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
Abstract
1526519 Lawn mowers ROPER CORP 25 Aug 1976 [8 Sept 1975 18 Aug 1976] 35376/76 Heading A1F A cutter disc assembly for a rotary lawn mower having a vertical shaft comprises a disc 20, preferably made of plastics, having a central portion 21, a peripheral portion 23, a number of radially aligned resilient plastics cutter pins 33 held in cantilever mountings adjacent their heads 35 to extend radially across and outwardly of the peripheral portion 23; the pins being of tapered construction and/or being provided with curved support means 41 to smoothly distribute curvature in the pin when deflected by an obstruction in use; the pins being capable of bending to a position where they are wholly protected by the peripheral portion, Fig. 11 (not shown). The pin may be tapered and may be inclined so that its tip 38 is below the level of the cutter disc. Vents (61, 63) Fig. 4a (not shown) in the central portion cause an updraft of air. In alternative embodiments the pins 130 are held in flared grooves 137-139 in the underside of the peripheral portion 123, Fig. 12, and the grooves have a ceiling 147 connected by a rib 157 to the centre of the disc, the ribs being provided for reinforcement and to cause a turbulent air current. The ceilings hold the pins in their inclined positions and to dampenout oscillation; the curved walls 142, 143 of the grooves serve to distribute curvature in the pins both on bending backwards after striking an obstruction and on subsequent forward bending, Fig. 16. The pins, which may have non-circular cross-sections, e.g. cruciform Fig. 26, may be located by passing through two depending annular walls 122', 122", Fig. 14, or may be held in two saddles 122', 122" Fig. 20. A floor below the pins may also be provided, Figs. 32-34 (not shown).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US61134775A | 1975-09-08 | 1975-09-08 | |
US05/714,982 US4126990A (en) | 1976-08-18 | 1976-08-18 | Cutter disc assembly for rotary lawn mower |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1526519A true GB1526519A (en) | 1978-09-27 |
Family
ID=27086492
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35376/76A Expired GB1526519A (en) | 1975-09-08 | 1976-08-25 | Cutter disc assembly for rotary lawn mower |
Country Status (11)
Country | Link |
---|---|
JP (1) | JPS5234237A (en) |
AU (1) | AU499511B2 (en) |
CA (1) | CA1039512A (en) |
CH (1) | CH609529A5 (en) |
DE (1) | DE2639128A1 (en) |
FR (1) | FR2322530A1 (en) |
GB (1) | GB1526519A (en) |
IE (1) | IE43172B1 (en) |
IT (1) | IT1083955B (en) |
NL (1) | NL7609634A (en) |
SE (1) | SE412506B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2299923A (en) * | 1995-04-20 | 1996-10-23 | Electrolux Outdoor Prod Ltd | Lawn mower blade mount |
WO2000062593A1 (en) * | 1999-04-15 | 2000-10-26 | Yamada Machinery Industrial Co., Ltd. | Rotary mowing cutter and portable power mower |
WO2012071636A1 (en) * | 2010-11-30 | 2012-06-07 | Takashi Nishimura | Cutting element for brushcutters of the type with a flexible shaft with handles |
CN112243677A (en) * | 2020-08-06 | 2021-01-22 | 张云瑄 | Rotary disc device of lawn mower |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4112653A (en) * | 1976-04-07 | 1978-09-12 | Weed Eater, Inc. | Lawn mower and method |
DE2736739A1 (en) * | 1976-08-18 | 1978-02-23 | Roper Corp | CUTTING TOOLS FOR LAWN MOWERS |
DE2759981C1 (en) * | 1977-08-05 | 1985-09-19 | Emerson Electric Co., St. Louis, Mo. | Device for cutting or mowing vegetation |
DE2735417C2 (en) | 1977-08-05 | 1982-05-13 | Weed Eater Inc., Houston, Tex. | Device for cutting or mowing vegetation or the like. |
FR2494848A1 (en) * | 1980-11-24 | 1982-05-28 | Technigaz | METHOD AND DEVICE FOR DETECTION, REMOTELY, OF SEALING FAULTS OF A CONDUIT OF TRANSPORT OF A FLUID, IMMERED IN AN AMBIENT FLUID; TRANSPORT CONDUIT COMPRISING THIS DETECTION DEVICE AND METHOD OF CONSTRUCTING SUCH A CONDUCT |
US4679383A (en) * | 1984-02-24 | 1987-07-14 | Robert Douglas Sheehan | Lawn edger |
JPS61181935A (en) * | 1985-02-06 | 1986-08-14 | Sumitomo Electric Ind Ltd | Oil leak detection |
JPH0236929U (en) * | 1988-09-06 | 1990-03-12 | ||
JPH0623417U (en) * | 1991-08-21 | 1994-03-29 | 円治郎 中村 | Rotary blade for mower |
FR2694718B1 (en) * | 1992-05-22 | 1996-03-08 | Stihl Andreas | CUTTING HEAD FOR A WIRE CUTTING DEVICE. |
DK0683969T3 (en) * | 1994-05-25 | 2000-08-21 | Easytrim Ltd | Rotary |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3831278A (en) * | 1972-08-03 | 1974-08-27 | Dynamics Corp America | Grass trimmer |
CH556632A (en) * | 1972-10-24 | 1974-12-13 | Langenstein Max Firma | Lawn edge cutter with cutting wire - wire protrudes between round teeth on top disc around coil |
IT982267B (en) * | 1973-04-05 | 1974-10-21 | Baruffato R | SAFETY DEVICE FOR AGRICULTURAL MACHINES OF THE TYPE OF MOTOZAP PATRICI MOTOCULTIVATORI AND SIMI LI EQUIPPED WITH DIESEL ENGINE |
IT983324B (en) * | 1973-05-29 | 1974-10-31 | Cioni P | TOOL WITH MULTIPLE CUTTERS ARTICULATED FLEXIBLE AGENT WITH ROTARY WORKING MOTION FOR OPERATING MACHINE SUCH AS MOWER, SAW AND SIMILAR |
JPS52814U (en) * | 1975-06-23 | 1977-01-06 | ||
FR2358818A1 (en) * | 1976-07-20 | 1978-02-17 | Elta Machine Ind Co Ltd | Rotary lawn mower cutter - with easily exchangeable cutting wires threaded through eyes |
-
1976
- 1976-08-25 GB GB35376/76A patent/GB1526519A/en not_active Expired
- 1976-08-25 AU AU17140/76A patent/AU499511B2/en not_active Expired
- 1976-08-27 IE IE1919/76A patent/IE43172B1/en unknown
- 1976-08-30 NL NL7609634A patent/NL7609634A/en not_active Application Discontinuation
- 1976-08-31 DE DE19762639128 patent/DE2639128A1/en not_active Withdrawn
- 1976-09-03 CH CH1118276A patent/CH609529A5/en not_active IP Right Cessation
- 1976-09-07 CA CA260,658A patent/CA1039512A/en not_active Expired
- 1976-09-07 FR FR7626933A patent/FR2322530A1/en active Granted
- 1976-09-07 IT IT26951/76A patent/IT1083955B/en active
- 1976-09-07 JP JP51106334A patent/JPS5234237A/en active Granted
- 1976-09-07 SE SE7609882A patent/SE412506B/en unknown
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2299923A (en) * | 1995-04-20 | 1996-10-23 | Electrolux Outdoor Prod Ltd | Lawn mower blade mount |
GB2299923B (en) * | 1995-04-20 | 1999-01-13 | Electrolux Outdoor Prod Ltd | Blade mounting apparatus |
WO2000062593A1 (en) * | 1999-04-15 | 2000-10-26 | Yamada Machinery Industrial Co., Ltd. | Rotary mowing cutter and portable power mower |
WO2012071636A1 (en) * | 2010-11-30 | 2012-06-07 | Takashi Nishimura | Cutting element for brushcutters of the type with a flexible shaft with handles |
CN112243677A (en) * | 2020-08-06 | 2021-01-22 | 张云瑄 | Rotary disc device of lawn mower |
Also Published As
Publication number | Publication date |
---|---|
IE43172B1 (en) | 1980-12-31 |
AU499511B2 (en) | 1979-04-26 |
FR2322530B1 (en) | 1980-06-27 |
SE412506B (en) | 1980-03-10 |
AU1714076A (en) | 1978-03-02 |
CA1039512A (en) | 1978-10-03 |
IT1083955B (en) | 1985-05-25 |
DE2639128A1 (en) | 1977-03-17 |
SE7609882L (en) | 1977-03-09 |
JPS5234237A (en) | 1977-03-16 |
CH609529A5 (en) | 1979-03-15 |
JPS543088B2 (en) | 1979-02-17 |
IE43172L (en) | 1977-03-08 |
NL7609634A (en) | 1977-03-10 |
FR2322530A1 (en) | 1977-04-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |