US3841073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implements for the displacement of crop lying on the ground
Assignee: C Van der Lely NV
•
Filing: 1972-11-07
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Granted: 1974-10-15
•
Expires: 1992-11-07
Abstract
Abstract A raking implement has at least one, preferably two, rotating rake wheels which are driven via a power takeoff to rotate about upwardly extending axes. Each rake wheel has radially extending arms, the ends of which have tines on supports pivotally connected to the arms. The tines are pivoted to move from one working position to another or a transport position in response to the torque of the driving connection so that one or more working positions can be achieved automatically during operation. The driving connection includes a geared hub connected through a coupling or directly to the tine supports and the tine supports can be movably associated or linked to the radial arms to rotate same after the tines and supports have been pivoted to another position. One or more stops and other adjusting means are employed to arrange and/or limit the positions of the tines and supports relative to the remainder of the rake wheel.
Inventors
- 👤 Der Lely C Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:45
CPC Classifications
A; A01; A01D; A01D78/00; A01D78/08; A01D78/10; A01D78/1078
Claims Analysis
Total Claims: 56
Claim 1
Independent Claim
140 words
A raking implement for the displacement of crop lying on the ground, comprising a frame and at least one rake member rotatably mounted on an upwardly extending shaft supported on said frame, said rake member having radial arms by tines pivotably secured adjacent the outer portions of said arms and said arms being operatively associated with driving means for rotation, said arms being interconnected with two rotatable and relatively displaceable elements located adjacent said shaft, said driving means including a first of said elements, the second element being linked with the first element through pivot connections to said tines, whereby, the torque of rotation displaces said elements with respect to one another and pivots said tines from one position to another, stop means on said rake member to limit the relative displacement of said elements with respect to one another.
Claim 2
Dependent Claim
140 words
A raking implement for the displacement of crop lying on the ground, comprising a frame and at least one rake member rotatably mounted on an upwardly extending shaft supported on said frame, said rake member having radial arms by tines pivotably secured adjacent the outer portions of said arms and said arms being operatively associated with driving means for rotation, said arms being interconnected with two rotatable and relatively displaceable elements located adjacent said shaft, said driving means including a first of said elements, the second element being linked with the first element through pivot connections to said tines, whereby, the torque of rotation displaces said elements with respect to one another and pivots said tines from one position to another, stop means on said rake member to limit the relative displacement of said elements with respect to one another.
Claim 3
Dependent Claim
26 words
An implement as claimed in claim 1, wherein said first element is an annular guide with its center of curvature being substantially coincident with said shaft.
Claim 4
Dependent Claim
20 words
An implement as claimed in claim 2, wherein said second element is a ring that is connected to said guide.
Claim 5
Dependent Claim
38 words
An implement as claimed in claim 3, wherein said annular guide includes a slot which subtends an angle of substantially 50* at the axis of rotation of said rake member and said second element moves along said slot.
Claim 6
Dependent Claim
37 words
An implement as claimed in claim 4, wherein the relative movements of said two elements is controlled by limiting means and said limiting means is a stop whereby a portion of said guide slot can be blocked.
Claim 7
Dependent Claim
25 words
An implement as claimed in claim 5, wherein said stop is displaceable relative to said guide in a substantially radial direction relative to said shaft.
Claim 8
Dependent Claim
25 words
An implement as claimed in claim 6 wherein said second element has an extension and said stop has a recess shaped to receive said extension.
Claim 9
Dependent Claim
37 words
An implement as claimed in claim 7, wherein said stop is displaceable in a direction substantially parallel to its own length and is associated with a retaining mechanism which fixes said stop in either of two position.
Claim 10
Dependent Claim
33 words
An implement as claimed in claim 8, wherein said retaining mechanism comprises a spring-loaded member having an at least partly spherical surface that cooperates with either one of two holes in said stop.
Claim 11
Dependent Claim
44 words
An implement as claimed in claim 7, wherein said limiting means comprises a plate that has slot means and which can be inverted 180* to vary the effective length of said guide and change the effective position of said guide relative to said shaft.
Claim 12
Dependent Claim
41 words
An implement as claimed In claim 10, wherein said extension normally projects through said slot means in the plate and has a releasable pin to retain the plate in an appointed position when the pin is in engagement with said extension.
Claim 13
Dependent Claim
34 words
An implement as claimed in claim 1, wherein said two elements are annular and concentrically mounted with respect to one another, the adjacent portions of said elements being connected by synthetic resin bearing material.
Claim 14
Dependent Claim
34 words
An implement as claimed in claim 12, wherein two relatively inclined portions of a first element are arranged to cooperate with two relatively inclined adjacent portions of the other element through said bearing material.
Claim 15
Dependent Claim
23 words
An implement as claimed in claim 13, wherein said relatively inclined portions of said elements are inclined to one another at substantially 90*.
Claim 16
Dependent Claim
17 words
An implement as claimed in claim 13 wherein the bearing material is in the form of buttons.
Claim 17
Dependent Claim
19 words
An implement as claimed in claim 15, wherein said buttons are spaced apart from one another at regular intervals.
Claim 18
Dependent Claim
43 words
An implement as claimed in claim 12, wherein one of the relatively inclined portions of each element extends substantially parallel to the axis of rotation of said rake member and each of the other relatively inclined portions extends substantially perpendicular to said axis.
Claim 19
Dependent Claim
22 words
An implement as claimed in claim 1, wherein said tines are biased by a spring to return to an initial nonworking position.
Claim 20
Dependent Claim
112 words
A raking implement for the displacement of crop lying on the ground, comprising a frame and a plurality of interconnected rake members mounted on upwardly extending axis shafts supported on said frame, at least one swath board being pivotably connected by an arm to one of said axis shafts which coincides with the center line of its respective rake member, the pivotal connection of each swath board including a support with means that limits the lateral movements of said board, each swath board being pivotable from a working position to an inoperative transport position, the pivotal connection of each swath board including a support to limit the lateral movements of said boards.
Claim 21
Dependent Claim
112 words
A raking implement for the displacement of crop lying on the ground, comprising a frame and a plurality of interconnected rake members mounted on upwardly extending axis shafts supported on said frame, at least one swath board being pivotably connected by an arm to one of said axis shafts which coincides with the center line of its respective rake member, the pivotal connection of each swath board including a support with means that limits the lateral movements of said board, each swath board being pivotable from a working position to an inoperative transport position, the pivotal connection of each swath board including a support to limit the lateral movements of said boards.
Claim 22
Dependent Claim
19 words
An implement as claimed in claim 19, wherein there are two swath boards pivotably connected to said axis shafts.
Claim 23
Dependent Claim
45 words
An implement as claimed in claim 20, wherein said swath boards are pivotable into two alternative working positions, and one of said working positions is located to define the greatest distance between said two swath boards which approximately equals the overall width of the implement.
Claim 24
Dependent Claim
27 words
An implement as claimed in claim 20, wherein, in the transport position, said swath boards are positioned substantially parallel to a frame beam interconnecting said rake members.
Claim 25
Dependent Claim
27 words
An implement as claimed in claim 20, wherein, in the transport position, said swath boards are pivoted to locations above a frame beam interconnecting said rake members.
Claim 26
Dependent Claim
45 words
An implement as claimed in claim 20, wherein said support is circular with recesses in its upper edge and each rake member is mounted on an arm that is movable to any one of said recesses around the axis shaft of the respective rake member.
Claim 27
Dependent Claim
21 words
An implement as claimed in claim 24, wherein said recesses correspond to at least one working position and a transport position.
Claim 28
Dependent Claim
45 words
An implement as claimed in claim 25, wherein each swath board is turnable about a substantially horizontal axis and movable in upward and downward directions, said axis being located closer to the axis shaft of the respective rake wheel than the rim of said support.
Claim 29
Dependent Claim
47 words
An implement as claimed in claim 26, wherein the connection of each swath board to the axis shaft of a rake member includes a pivot bushing which is turnably connected to the axis shaft of a rake member, a second pivot connection being secured in said bushing.
Claim 30
Dependent Claim
23 words
An implement as claimed in claim 27, wherein each swath board has a lower guide beam which bears against the ground during operation.
Claim 31
Dependent Claim
42 words
An implement as cLaimed in claim 28, wherein part of the swath board which is foremost viewed in the direction of travel is situated near the circular path traced by rotating of the tines of said rake members in their outermost positions.
Claim 32
Dependent Claim
17 words
An implement as claimed in claim 25, wherein said support is vertically adjustable along its axis shaft.
Claim 33
Dependent Claim
34 words
An implement as claimed in claim 19, wherein each rake member includes a partly circular part on its axis shaft and said part has downwardly extending arms which are coupled to supports for tines.
Claim 34
Dependent Claim
53 words
An implement as claimed in claim 19, wherein said swath board has spring tines of varying lengths extending substantially parallel to one another and a frame beam interconnects the axis shafts of the raking members and in the transport position the tines of said swath board extend substantially parallel to said frame beam.
Claim 35
Dependent Claim
142 words
A raking implement for the displacement of crop lying on the ground, comprising a frame and at least one rake member rotatably mounted on said frame and supported on an upwardly extending axis, driving means connected to said rake member, and tines being turnably supported on said member, said tines being drivenly coupled to an element on which the driving torque is exerted, said element, with the tines, being displaceable with respect to the remainder of said rake member, and said element being mounted on said rake member to displace independently of the rotation of said rake member in response to the torque exerted by said driving means of the rake member, whereby said element and tines are displaced and moved with respect to the remainder of said rake member, said tines being turned from one position into another position during rotation.
Claim 36
Dependent Claim
142 words
A raking implement for the displacement of crop lying on the ground, comprising a frame and at least one rake member rotatably mounted on said frame and supported on an upwardly extending axis, driving means connected to said rake member, and tines being turnably supported on said member, said tines being drivenly coupled to an element on which the driving torque is exerted, said element, with the tines, being displaceable with respect to the remainder of said rake member, and said element being mounted on said rake member to displace independently of the rotation of said rake member in response to the torque exerted by said driving means of the rake member, whereby said element and tines are displaced and moved with respect to the remainder of said rake member, said tines being turned from one position into another position during rotation.
Claim 37
Dependent Claim
22 words
An implement as claimed in claim 33, wherein said tines are moveable from a transport position into a working position during rotation.
Claim 38
Dependent Claim
35 words
An implement as claimed in claim 33, wherein said element is located around the axis of symmetry of the rake member and is rotatably mounted on said member to be turnable around its own axis.
Claim 39
Dependent Claim
24 words
An implement as claimed in claim 33, wherein said element is coupled to a tooth-wheel means that forms a part of said driving connection.
Claim 40
Dependent Claim
18 words
An implement as claimed in claim 36, wherein said tines are coupled with the element by rod means.
Claim 41
Dependent Claim
24 words
An implement as claimed in claim 37, wherein each of said tines are connected to said element with a rod of said rod means.
Claim 42
Dependent Claim
31 words
An implement as claimed in claim 33, wherein said rake member includes stop means for limiting the relative movement of said element with respect to the remainder of said raking member.
Claim 43
Dependent Claim
44 words
An implement as claimed in claim 39, wherein the extent of the movement of said element with respect to the remainder of the raking member is adjustable with adjusting means associated with the driving means whereby said tines can be set in different positions.
Claim 44
Dependent Claim
28 words
An implement as claimed in claim 40, wherein a stop of said stop means for limiting the relative movement of said element is secured to said rake member.
Claim 45
Dependent Claim
20 words
An implement as claimed in claim 41 wherein said stop is adjustably mounted for setting the tines in different positions.
Claim 46
Dependent Claim
22 words
An implement as claimed in claim 33, wherein said element is biased by a spring to return to an initial non-working position.
Claim 47
Dependent Claim
50 words
An implement as claimed in claim 33, wherein said element is directly connected to said driving means for moving the tines from a first position to a second position and said driving means is mounted to cause a periodical displacement of said tines during each revolution of said rake member.
Claim 48
Dependent Claim
51 words
An implement as claimed in claim 44, wherein said element is generally circular and eccentrically mounted around the shaft which affords the axis of rotation of said rake member, said element being rotated by said driving means about said axis whereby, during each revolution, said tines are displaced from one position.
Claim 49
Dependent Claim
29 words
An implement as claimed in claim 45, wherein said element is adjusTably mounted on said shaft to vary the magnitude of effect of rotational torque of said rake member.
Claim 50
Dependent Claim
149 words
A raking implement for the displacement of crop lying on the ground, comprising a frame, and at least one rake member rotatably mounted on said frame, said member being supported on an upwardly extending axis shaft and being connected to driving means for rotation, said rake member comprising radial arms with tines on support means turnable mounted with respect to said shaft, an adjusting member being displaceable relative to the remaining part of the rake member due to an increase or decrease of torque exerted by said driving means, said adjusting member being linked with pivotal supports of said support means and said tines to automatically move same from one position to another position, said adjusting member including fixing means to secure same in different settings relative to the remaining part of the raking member to vary the magnitude of movement of the tines from one position to another.
Claim 51
Dependent Claim
149 words
A raking implement for the displacement of crop lying on the ground, comprising a frame, and at least one rake member rotatably mounted on said frame, said member being supported on an upwardly extending axis shaft and being connected to driving means for rotation, said rake member comprising radial arms with tines on support means turnable mounted with respect to said shaft, an adjusting member being displaceable relative to the remaining part of the rake member due to an increase or decrease of torque exerted by said driving means, said adjusting member being linked with pivotal supports of said support means and said tines to automatically move same from one position to another position, said adjusting member including fixing means to secure same in different settings relative to the remaining part of the raking member to vary the magnitude of movement of the tines from one position to another.
Claim 52
Dependent Claim
19 words
An implement as claimed in claim 47, wherein said adjusting member is circular and eccentrically mounted around said shaft.
Claim 53
Dependent Claim
28 words
An implement as claimed in claim 48, wherein the axis of said adjusting member is adjustable in a direction parallel to the center line of said rake member.
Claim 54
Dependent Claim
20 words
An implement as claimed in claim 47, wherein there are two rake members mounted on shafts supported on said frame.
Claim 55
Dependent Claim
35 words
An implement as claimed in claim 47, wherein said tines are in groups and each arm has a group of tines connected to a support on said arm, said support being pivoted to said arm.
Claim 56
Dependent Claim
22 words
An implement as claimed in claim 47, wherein said tines are biased by a spring to return to an initial non-working position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |