US3834564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for the combined operation of an unloader tube and auger clutch of a combine harvester
Assignee: Case LLC
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Filing: 1973-10-23
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Granted: 1974-09-10
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Expires: 1993-10-23
Abstract
Abstract A control system for the grain auger and discharge tube of a combine harvester. A single handle may be displaced from a central, neutral position to set the tube to a transport position, or to a work position, and from said work position only to an auger actuating position.
Inventors
- 👤 G Godderis
- 👤 M Laurent
- 👤 J Lemoine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:47
CPC Classifications
A; A01; A01D; A01D41/00; A01D41/12; A01D41/1208; A01D41/1217
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
230 words
A control device for systems which initiate movements of the grain-unloading tube of a combine-harvester in order to transfer the tube from its folded-back or road transport position to its raised work position and conversely, and for the clutch-control system for initiating the operation of the auger which is intended to discharge the grain into said unloader tube in the work position alone, said control device being characterized in that it comprises a single movable manual-control member which can be displaced on the one hand from a neutral position selectively to a road transport position or to a work position in order to initiate setting of the unloader tube in the transport position or the work position respectively and, on the other hand, to a clutch-engagement position in which said unloader tube must be maintained so long as said clutch is intended to remain engaged, said single movable manual-control member being coupled to the system for controlling the displacements of the unloader tube and to the auger-actuating clutch control system respectively by connecting means so arranged that, when the manual control member is moved between its neutral position and its two positions of road transport and work, said member does not produce action on the auger-actuating clutch control system and that said member can move towards the clutch-engagement position thereof only when it has first passed through its work position.
Claim 2
Dependent Claim
230 words
A control device for systems which initiate movements of the grain-unloading tube of a combine-harvester in order to transfer the tube from its folded-back or road transport position to its raised work position and conversely, and for the clutch-control system for initiating the operation of the auger which is intended to discharge the grain into said unloader tube in the work position alone, said control device being characterized in that it comprises a single movable manual-control member which can be displaced on the one hand from a neutral position selectively to a road transport position or to a work position in order to initiate setting of the unloader tube in the transport position or the work position respectively and, on the other hand, to a clutch-engagement position in which said unloader tube must be maintained so long as said clutch is intended to remain engaged, said single movable manual-control member being coupled to the system for controlling the displacements of the unloader tube and to the auger-actuating clutch control system respectively by connecting means so arranged that, when the manual control member is moved between its neutral position and its two positions of road transport and work, said member does not produce action on the auger-actuating clutch control system and that said member can move towards the clutch-engagement position thereof only when it has first passed through its work position.
Claim 3
Dependent Claim
102 words
A device according to claim 1, characterized in that the single movable manual-control member is coupled to the auger-actuating clutch control system by means of a dead-travel connection in which the dead travel corresponds to the range of motion of said movable control member between its neutral position and its two positions of road transport and work, said movable member being connected to the system for controlling the displacements of the unloader tube by means of a releasable coupling controlled by said movable member and subjected to the action of a locking device designed and arranged to permit only the sequences aforesaid.
Claim 4
Dependent Claim
67 words
A device according to claim 2, characterized in that the single movable manual-control member is capable of moving in both directions along a first predetermined path between its neutral position and its two positions of road transport and Work, the releasable coupling being freed by means of a displacement of said single movable manual-control member along a second path at right angles to the first path aforesaid.
Claim 5
Dependent Claim
156 words
A device according to claim 3, characterized in that the single movable manual-control member is a lever and the locking system is constituted by a retaining-plate which is capable of sliding along the aforesaid first path of travel of said movable member, the extremities of said retaining-plate being bent back in the direction of the second path aforesaid and spaced apart at a distance corresponding to approximately three-quarters of the length of travel of the movable member between the road and work positions thereof, the curved extremity of the retaining-plate being located on the same side as the neutral position of said movable member which corresponds to the setting of the unloader tube in the work position, said curved extremity being provided with a return portion which is parallel to the direction of sliding motion of said retaining-plate and has a length substantially equal to one-quarter of the aforesaid length of travel of said movable member.
Claim 6
Dependent Claim
25 words
A device according to claim 4, characterized in that the sliding retaining-plate is fitted with a friction system against the member which carries said plate.
Claim 7
Dependent Claim
142 words
A device according to claim 3, characterized in that the coupling between the single movable manual-control member and the system for controlling the displacements of the unloader tube comprises a lever rigidly fixed to a pivotal shaft coupled to the clutch-control system and the single movable manual-control member is also constituted by a lever carried by a hub which is freely mounted on the same shaft and also capable of pivoting with respect to said shaft about a second axis at right angles thereto, the releasable coupling aforesaid being constituted by cooperating elements of short axial length carried by said levers such as a lug carried by one of said two levers and capable of engaging in a corresponding hole of the other lever under the action of a pivotal movement of said single movable manual-control member about the second axis aforesaid.
Claim 8
Dependent Claim
104 words
A device according to claim 6, characterized in that the manual control lever is engaged in a guide plate having a first section for guiding the lever between its neutral position and its two positions of road transport and work, a second section having a direction at right angles to the direction of the first section for guiding the lever during the movements involved in connecting and disconnecting the releasable coupling aforesaid, and a third section located approximately in the line of extension of the first section for guiding said lever during the movements involved in the engagement and release of the auger-control clutch.
Claim 9
Dependent Claim
52 words
A device according to claim 7, characterized in that the third section of the plate for guiding the manual control lever has a recess for retaining said lever in the position of engagement of the auger-control clutch and a recess for retaining said lever in the position of release of said clutch.
Claim 10
Dependent Claim
197 words
A device according to claim 3, characterized in that the single movable manual-control member is a lever and the locking system is constituted by a catch which is pivotally mounted on a shaft at right angles to the two paths aforesaid and is subjected to the action of elastic means for returning against a stop, said catch being provided on the one hand with a hook-shaped portion which describes a portion of circumference tangent to the first path aforesaid during the pivotal motion of said catch and is capable of preventing the displacement of the lever from its neutral position in the direction of the second path aforesaid when said catch is applied against said stop whereas said catch permits said displacement after having pivoted under the action of the manual-control lever which has been brought to the work position thereof and, on the other hand, with a portion in the form of a cam against whicH the manual control lever is applied in its movement along the second path aforesaid in the direction of its return to the neutral position thereof so as to cause said catch to pivot in opposition to its elastic restoring means.
References Cited (Backward Citations)
US2616579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |