Patent US4215526A successfully refreshed from Google Patents.
US4215526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mowing machine
Assignee: C Van der Lely NV
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Filing: 1978-10-06
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Granted: 1980-08-05
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Expires: 1998-10-06
Abstract
Abstract A mowing machine which extends laterally of a tractor and is connected to the lifting device of a tractor which has a frame and two rotors driven through gearing from the power take-off of the tractor. Each rotor includes a hollow tube driven by gears in the frame which causes the rotor to rotate and each rotor carries two cutter members which are driven by rotation of the rotor and through meshing with a stationary gear mounted from a stationary tube which is coaxial with the hollow shaft in the rotor. Six cutters extend from each cutting member and are thus rotated in a direction opposite that of the rotor at a substantially greater speed. A plate member extends from each hollow shaft which has tines connected thereto for moving crop cut by the cutters under the frame and to the rear. The rotors shield the cutters through about 180 degrees of their rotation. Swath forming members are connected to the frame to receive cut crop moved to the rear by rotors whereby same is formed into a swath. In one embodiment, the hollow shaft includes vanes which receive linked cutter members whereby if a cutter member is broken, the link is then extended to provide a further cutter member.
Inventors
- 👤 Cornelis van der Lely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:43
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D34/66
Claims Analysis
Total Claims: 52
Claim 1
Independent Claim
122 words
A mowing machine comprising a rotor including means for mowing cut crop which is mounted for rotation at a first rpm about a substantially vertical main axis, a mowing element mounted on said rotor for rotation at a second rpm higher than said first rpm about a substantially vertical further axis which is spaced from said main axis, said rotor including a plate which is disposed beneath said mowing element, a first part of the periphery of said plate being arcuate and spaced outward of said further axis by a first distance, a second part of the periphery of said plate also being arcuate and spaced outward of said main axis by a second distance which is longer than said first distance.
Claim 2
Dependent Claim
122 words
A mowing machine comprising a rotor including means for mowing cut crop which is mounted for rotation at a first rpm about a substantially vertical main axis, a mowing element mounted on said rotor for rotation at a second rpm higher than said first rpm about a substantially vertical further axis which is spaced from said main axis, said rotor including a plate which is disposed beneath said mowing element, a first part of the periphery of said plate being arcuate and spaced outward of said further axis by a first distance, a second part of the periphery of said plate also being arcuate and spaced outward of said main axis by a second distance which is longer than said first distance.
Claim 3
Dependent Claim
25 words
A mowing machine as claimed in claim 1, in which said rotor is provided with a supporting member which supports said rotor on the ground.
Claim 4
Dependent Claim
22 words
A mowing machine as claimed in claim 2, in which said plate is disposed between said supporting member and said mowing element.
Claim 5
Dependent Claim
36 words
A mowing machine as claimed in claim 1 wherein said rotatable mowing element includes a cutter member which is mounted for displacement through a sleeve, said sleeve being rotatable in a direction opposite said mowing element.
Claim 6
Dependent Claim
29 words
A mowing machine as claimed in claim 4, in which said cutter member is mounted in a holder communicating with said sleeve for displacement outwardly of said mowing element.
Claim 7
Dependent Claim
58 words
A mowing machine as claimed in claim 1 wherein a cutter member is provided in said mowing element mounted for displacement outwardly thereof, a feed channel along which said cutter member is displaceable, a holder for said cutter member communicating with said feed channel, at least a part of said feed channel extending axially of said mowing element.
Claim 8
Dependent Claim
19 words
A mowing machine as claimed in claim 6, in which said cutter member comprises a plurality of linked elements.
Claim 9
Dependent Claim
31 words
A mowing machine as claimed in claim 1 comprising a cutter member which is mounted for displacement outwardly of said mowing element, said cutter member comprising a plurality of linked elements.
Claim 10
Dependent Claim
33 words
A mowing machine as claimed in claim 8, in which a rotor is provided above said mowing element, said rotor including at least one feed channel for guiding said plurality of linked elements.
Claim 11
Dependent Claim
21 words
A mowing machine as claimed in claim 9, in which said feed channel is defined by pairs of diametrically disposed plates.
Claim 12
Dependent Claim
18 words
A mowing machine as claimed in claim 9, in which said rotor is provided with crop displacing members.
Claim 13
Dependent Claim
35 words
A mowing machine as claimed in claim 8, in which crop displacing members are mounted on a further plate provided above said cutter member, said crop displacing members comprising tines fastened to said further plate.
Claim 14
Dependent Claim
27 words
A mowing machine as claimed in claim 12, in which, with respect to the direction of rotation of said rotor, said tines trail behind said further plate.
Claim 15
Dependent Claim
33 words
A mowing machine as claimed in claim 8, in which said rotor is fastened to a hollow shaft extending from a frame of the machine to near the level of said mowing element.
Claim 16
Dependent Claim
31 words
A mowing machine as claimed in claim 1 comprising a frame, said rotor being secured to a hollow shaft extending from said frame substantially at the level of said mowing element.
Claim 17
Dependent Claim
26 words
A mowing machine as claimed in claim 15 in which said hollow shaft is connected at its lower end with the top of a gear box.
Claim 18
Dependent Claim
25 words
A mowing machine as claimed in claim 16, in which said hollow shaft is journalled at both the top and the bottom of said frame.
Claim 19
Dependent Claim
26 words
A mowing machine as claimed in claim 17, in which said hollow shaft is surrounded within said frame by a gear adapted to drive said rotor.
Claim 20
Dependent Claim
19 words
A mowing machine as claimed in claim 15, in which said hollow shaft is coaxial with said main axis.
Claim 21
Dependent Claim
30 words
A mowing machine as claimed in claim 19, in which a main shaft is disposed coaxially with said main axis and is rigidly secured to the frame at the top.
Claim 22
Dependent Claim
19 words
A mowing machine as claimed in claim 15, in which said mowing element has at least three cutter members.
Claim 23
Dependent Claim
30 words
A mowing machine as claimed in claim 21, in which means for driving said rotor is provided whereby the speed of said rotor in operation is about five hundred RPM.
Claim 24
Dependent Claim
31 words
A mowing machine as claimed in claim 22, in which means is provided for driving said element whereby the speed of said mowing element in operation is about nine thousand RPM.
Claim 25
Dependent Claim
20 words
A mowing machine as claimed in claim 23, in which the working width of the machine is about 1.60 meters.
Claim 26
Dependent Claim
24 words
A mowing machine as claimed in claim 15, in which means are provided for hitching the machine to the lifting device of a tractor.
Claim 27
Dependent Claim
25 words
A mowing machine as claimed in claim 25, in which means are provided for driving the machine from the power take-off shaft of the tractor.
Claim 28
Dependent Claim
194 words
A mowing machine comprising a rotor including tine means thereon which are mounted for rotation about a substantially vertical main axis, a mowing element mounted on said rotor for rotation about a substantially vertical further axis which is spaced from said main axis, the rotor including a plate which, in operation, rotates with said mowing element about said main axis, said plate being disposed between said mowing element and a supporting member which is provided on said rotor for supporting said rotor on the ground, a first part of the periphery of said plate substantially conforming to the circumference of a first circle for about 125° having its center at said further axis, a second part of said periphery conforming to the circumference of a second circle having its center at said main axis, said first circle having a radius shorter than said second circle which is less than the distance between said axes whereby the operative portion of said element relative is an arc of about 180° where it extends beyond said first periphery part, said tine means spaced relative to the direction of rotation of said rotor behind said first periphery part.
Claim 29
Dependent Claim
194 words
A mowing machine comprising a rotor including tine means thereon which are mounted for rotation about a substantially vertical main axis, a mowing element mounted on said rotor for rotation about a substantially vertical further axis which is spaced from said main axis, the rotor including a plate which, in operation, rotates with said mowing element about said main axis, said plate being disposed between said mowing element and a supporting member which is provided on said rotor for supporting said rotor on the ground, a first part of the periphery of said plate substantially conforming to the circumference of a first circle for about 125° having its center at said further axis, a second part of said periphery conforming to the circumference of a second circle having its center at said main axis, said first circle having a radius shorter than said second circle which is less than the distance between said axes whereby the operative portion of said element relative is an arc of about 180° where it extends beyond said first periphery part, said tine means spaced relative to the direction of rotation of said rotor behind said first periphery part.
Claim 30
Dependent Claim
25 words
A mowing machine as claimed in claim 27, in which said mowing element is located between the plate and a member disposed above said plate.
Claim 31
Dependent Claim
17 words
A mowing machine as claimed in claim 28, in which said plate extends parallel to said member.
Claim 32
Dependent Claim
30 words
A mowing machine as claimed in claim 29, in which, as viewed in a direction parallel to said main axis, said plate and said member have the same peripheral configuration.
Claim 33
Dependent Claim
30 words
A mowing machine as claimed in claim 30, in which said member disposed above said mowing element comprises part of a gear box accommodating means for driving said mowing element.
Claim 34
Dependent Claim
19 words
A mowing machine as claimed in claim 31, in which said mowing element is journalled in said gear box.
Claim 35
Dependent Claim
24 words
A mowing machine as claimed in claim 32, in which said mowing element is one of two mowing elements journalled in said gear box.
Claim 36
Dependent Claim
26 words
A mowing machine as claimed in claim 33, in which said two mowing elements are disposed diametrically opposite one another with respect to said main axis.
Claim 37
Dependent Claim
31 words
A mowing machine as claimed in claim 32, in which said mowing element is driven by means of a sun gear disposed in said gear box coaxially with said main axis.
Claim 38
Dependent Claim
23 words
A mowing machine as claimed in claim 35, in which an intermediate gear is arranged between said mowing element and said sun gear.
Claim 39
Dependent Claim
35 words
A mowing machine as claimed in claim 36, in which said intermediate gear comprises an upper pinion engaging said sun gear and a lower pinion engaging a planetary gear disposed coaxially with said further axis.
Claim 40
Dependent Claim
42 words
A mowing machine as claimed in claim 30, in which the two said periphery parts meet at a location where the path of the operative portion of said mowing element, in operation, crosses the periphery of said plate, as viewed in plan.
Claim 41
Dependent Claim
27 words
A mowing machine as claimed in claim 38, in which, as viewed in plan, said mowing element projects beyond said plate over an arc of approximately 180°.
Claim 42
Dependent Claim
27 words
A mowing machine as claimed in claim 30, in which said plate is asymmetrical with respect to the plane containing said further axis and said main axis.
Claim 43
Dependent Claim
35 words
A mowing machine as claimed in claim 40, in which, with respect to the direction of rotation of said rotor, a portion of the periphery of said plate which trails said further axis is straight.
Claim 44
Dependent Claim
22 words
A mowing machine as claimed in claim 27, in which said mowing element is mounted on a sleeve included in said rotor.
Claim 45
Dependent Claim
128 words
A mowing machine comprising a rotor which is mounted for driven rotation about a substantially vertical main axis, said rotor carrying a mowing element which is fastened to a sleeve provided in said rotor and is mounted for driven rotation about a substantially vertical further axis which is spaced from said main axis, said rotor including a plate which completely underlies said sleeve, the periphery of said plate being curved in a first part spaced around said further axis by a first distance and being curved in a second part spaced around said main axis by a second distance greater than said first distance but less than a third distance between said axes, said mowing element including a cutter member which extends outwardly of said first periphery part.
Claim 46
Dependent Claim
128 words
A mowing machine comprising a rotor which is mounted for driven rotation about a substantially vertical main axis, said rotor carrying a mowing element which is fastened to a sleeve provided in said rotor and is mounted for driven rotation about a substantially vertical further axis which is spaced from said main axis, said rotor including a plate which completely underlies said sleeve, the periphery of said plate being curved in a first part spaced around said further axis by a first distance and being curved in a second part spaced around said main axis by a second distance greater than said first distance but less than a third distance between said axes, said mowing element including a cutter member which extends outwardly of said first periphery part.
Claim 47
Dependent Claim
20 words
A mowing machine as claimed in claim 43, which includes a gear box, said sleeve extending across said gear box.
Claim 48
Dependent Claim
18 words
A mowing machine as claimed in claim 44, in which said sleeve is coaxial with said mowing element.
Claim 49
Dependent Claim
27 words
A mowing machine as claimed in claim 45, in which said sleeve is provided at its circumference with a planetary wheel adapted to drive said mowing element.
Claim 50
Dependent Claim
25 words
A mowing machine as claimed in claim 45, in which said cutting member is mounted for displacement through a feed channel formed by said sleeve.
Claim 51
Dependent Claim
184 words
A mowing machine which comprises a horizontal frame adapted to be mounted laterally of a tractor from a lifting device of the tractor, at least two rotors journalled from and extending below said frame, drive means carried by said frame for rotating said rotors, a hollow tube in each said rotor connected to said drive means to rotate about a main axis of rotation, at least two cutter members carried by each said rotor, each said cutter member having a further axis of rotation spaced from said main axis of rotation of said hollow tube, means for rotating said cutter members at least ten times the rate of said hollow tube, a plate member affixed to and extending radially from each said hollow tube, each said plate member having a first periphery part which is arcuate relative to said further axis of its said cutter member and a second periphery part which is also arcuate relative to its said main axis and is spaced therefrom a distance which is substantially greater than the distance said first periphery part is spaced from said further axis.
Claim 52
Dependent Claim
184 words
A mowing machine which comprises a horizontal frame adapted to be mounted laterally of a tractor from a lifting device of the tractor, at least two rotors journalled from and extending below said frame, drive means carried by said frame for rotating said rotors, a hollow tube in each said rotor connected to said drive means to rotate about a main axis of rotation, at least two cutter members carried by each said rotor, each said cutter member having a further axis of rotation spaced from said main axis of rotation of said hollow tube, means for rotating said cutter members at least ten times the rate of said hollow tube, a plate member affixed to and extending radially from each said hollow tube, each said plate member having a first periphery part which is arcuate relative to said further axis of its said cutter member and a second periphery part which is also arcuate relative to its said main axis and is spaced therefrom a distance which is substantially greater than the distance said first periphery part is spaced from said further axis.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-08-05 | 1984-02-04 | 1984-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-05 | 1988-02-04 | 1988-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-05 | 1992-02-04 | 1992-08-05 | $7700.00 | Window Closed / Lapsed |