DE1108971B - Control device for the hydraulic power lifting device on agricultural tractors - Google Patents
Control device for the hydraulic power lifting device on agricultural tractorsInfo
- Publication number
- DE1108971B DE1108971B DEM43397A DEM0043397A DE1108971B DE 1108971 B DE1108971 B DE 1108971B DE M43397 A DEM43397 A DE M43397A DE M0043397 A DEM0043397 A DE M0043397A DE 1108971 B DE1108971 B DE 1108971B
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- valve
- plow
- tractor
- relief valve
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
- A01B63/1115—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements using a mechanical ground contact sensor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
- A01B63/114—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements to achieve a constant working depth
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Description
Die Erfindung bezieht sich auf eine Steuereinrichtung für die hydraulische Krafthebevorrichtung an Ackerschleppern mit einem Ventil für die Begrenzung des Flüssigkeitsdruckes in der zum Arbeitszylinder des Krafthebers führenden Druckleitung.The invention relates to a control device for the hydraulic power lifting device Agricultural tractors with a valve for limiting the fluid pressure in the working cylinder of the Power lift leading pressure line.
Zur selbsttätigen Regulierang der Arbeitstiefe von an Schleppern angebauten landwirtschaftlichen Bodenbearbeitungsgeräten ist es bekannt, ein Tastorgan, beispielsweise ein Tastrad oder eine Kufe, in Wirkungsverbindung mit der auf dem Schlepper vorhandenen hydraulischen Krafthebevorrichtung zu bringen. Man hat auch bereits vorgeschlagen, daß das Tastorgan mit einem besonderen, von dem normalen Hauptsteuerschieber für den auf dem Schlepper vorgesehenen lydraulischen Kraftheber unabhängigen Steuerschie- :r Verbindung hat, der die Arbeitstiefe unabhängig on der Stellung des normalen Steuerschiebers reguiert. For automatic regulation of the working depth of agricultural tillage implements attached to tractors it is known to have a feeler element, for example a feeler wheel or a runner, in operative connection with the one present on the tractor bring hydraulic power lifting device. It has also already been suggested that the tactile organ with a special one from the normal main control valve for the one provided on the tractor Hydraulic power lift has independent control slide: r connection that has independent working depth governed by the position of the normal control spool.
Es sind auch Steuergeräte an hydraulischen Kraftgebern von Landwirtschaftsschleppern bekannt geworden, durch welche die Triebachse des Schleppers dadurch zusätzlich belastet werden kann, daß ein Teil des Gerätegewichtes durch den Kraftheber auf den Schlepper übertragen wird. Die Wirkung wird allgemein dadurch erzeugt, daß der Flüssigkeitsdruck im Arbeitszylinder bei abgesenktem Gerät, außer auf den vollen, zum Ausheben nötigen Pumpendruck, auch auf einen in der Ausheberichtung wirksamen Teildruck einstellbar ist, wodurch ein diesem Druck entsprechender Teil des Gerätegewichtes aufgehoben und auf die Schleppertriebachse übertragen wird.There are also control units on hydraulic power transmitters has become known from agricultural tractors, through which the driving axle of the tractor can be additionally burdened by the fact that part of the device weight by the power lift on the Tug is transferred. The effect is generally produced by the fact that the liquid pressure in the Working cylinder with the implement lowered, except for the full pump pressure required for lifting, also on a partial pressure effective in the lifting direction can be set, whereby a pressure corresponding to this pressure Part of the implement weight is lifted and transferred to the tractor drive axle.
Ein wesentliches Merkmal der Erfindung besteht darin, daß der Durchflußwiderstand des Ventils für die Begrenzung des Flüssigkeitsdrucks in der zum Arbeitszylinder des Krafthebers führenden Druckleitung sowohl durch ein zur selbsttätigen Arbeitstiefenregulierung eines landwirtschaftlichen Bodenbearbeitungsgerätes bestimmtes, relativ zum Bodenbearbeitungsgerät oder dessen Anhängevorrichtung in der Vertikalrichtung bewegliches und sich am Boden abstützendes Tastorgan als auch unabhängig vom Tastorgan durch ein von Hand bedienbares Steuermittel oder durch beide Organe veränderbar ist. Dadurch kann das Steuergerät wahlweise für einen oder für beide der erwähnten Arbeitszwecke eingesetzt werden. Es ist also auch bei der Verwendung des Steuergerätes für die Tiefenregulierung gleichzeitig ein Regulieren der Triebachsbelastung möglich.An essential feature of the invention is that the flow resistance of the valve for the Limitation of the fluid pressure in the pressure line leading to the working cylinder of the power lift both by an automatic working depth regulation of an agricultural tillage device certain relative to the tillage device or its hitch in the vertical direction movable and on the ground supported tactile organ as well as independent of the tactile organ a manually operable control means or can be changed by both organs. This can do that Control unit can be used either for one or both of the mentioned work purposes. So it is even when using the control unit for depth regulation, regulating the at the same time Drive axle loading possible.
Weitere wesentliche Merkmale der Erfindung ergeben sich aus der folgenden Beschreibung.Further essential features of the invention emerge from the following description.
In der Zeichnung ist die Erfindung beispielsweise dargestellt, und zwar zeigtIn the drawing, the invention is shown for example, namely shows
SteuereinrichtungControl device
für die hydraulische Krafthebevorrichtung
an Ackerschleppernfor the hydraulic power lifting device
on farm tractors
Anmelder:Applicant:
Maschinenfabrik Johann Bucher,
Grießen (Bad.)Machine factory Johann Bucher,
Grießen (bath.)
Fig. 1 eine schematische Anordnung eines an einem Schlepper angehängten Pfluges mit einer Tiefenregulierungseinrichtung nebst zugehörigem im Vertikalschnitt dargestellten Steuergerät, bei welchem der Steuerschieber in der Teildruckstellung gezeichnet ist, und1 shows a schematic arrangement of a plow attached to a tractor with a depth regulating device together with the associated control device shown in vertical section, in which the control slide is drawn in the partial pressure position, and
Fig. 2, 3 und 4 gleiche Darstellungen des Steuergerätes wie Fig. 1, der Steuerschieber jedoch in der Senk- (Fig. 2), Halte- (Fig. 3) und in der Aushebestellung (Fig. 4).2, 3 and 4 are the same representations of the control device as FIG. 1, but the control slide in FIG Lowering (Fig. 2), holding (Fig. 3) and in the lifting position (Fig. 4).
Die Druckflüssigkeit wird einem Steuergerät 1 von einem Ölbehälter 2 über eine Leitung 3, eine Pumpe 4 und eine Zuleitung 5 zugeführt. Vom Steuergerät 1 wird über eine Druckleitung 6 ein Arbeitskolben 7 in einem Arbeitszylinder 8 beaufschlagt. Über eine Rückleitung 9 kann die Druckflüssigkeit vom Steuergerät 1 in den Ölbehälter 2 drucklos zurückgeleitet werden.The pressure fluid is supplied to a control unit 1 from an oil container 2 via a line 3, a pump 4 and a supply line 5 is supplied. A working piston 7 in a working cylinder 8 is applied. The hydraulic fluid can be fed from the control unit 1 via a return line 9 be returned to the oil tank 2 without pressure.
Ein Drehschieber 10, ein Halteventil 11 und ein Maximaldruckventil 12 bilden an sich bekannte Bestandteile des Steuergerätes 1. Ein Druckbegrenzungsventil 13 steht einerends unter der Wirkung einer Druckfeder 14, welche auf einer im Raum 15 längsbeweglichen Platte 16 aufliegend durch eine Exzenterwelle 17 vorgespannt werden kann. Anderends weist das Druckbegrenzungsventil 13 eine aus dem Steuergerät 1 herausragende Verlängerung 18 auf, an deren Endteil eine Anschlußmutter 19 aufschraubbar ist. Mit der Anschlußmutter 19 ist eine Zugfeder 20 fest verbunden, die an einen Bowdenzug 21 angeschlossen ist, dessen nichtlaufender Mantelteil 22 sich auf einem festen Anschlag 23 abstützt.A rotary slide valve 10, a holding valve 11 and a maximum pressure valve 12 form components which are known per se of the control device 1. A pressure relief valve 13 is at one end under the action of a Compression spring 14, which rests on a plate 16 which is longitudinally movable in space 15 by an eccentric shaft 17 can be biased. On the other hand, the pressure relief valve 13 has one from the control unit 1 protruding extension 18, at the end part of which a connecting nut 19 can be screwed. A tension spring 20, which is connected to a Bowden cable 21, is firmly connected to the connecting nut 19 is, whose non-running casing part 22 is supported on a fixed stop 23.
Am Schlepper, von dem ein Hinterrad 24 angedeutet ist, sind zwei mit einer Hubwelle 25 drehende undOn the tractor, of which a rear wheel 24 is indicated, are two with a lifting shaft 25 rotating and
109 617/133109 617/133
Claims (2)
ber 10, eine Exzenternut 39, über das durch die Ex- 30 Mit dem Steuergerät können die für die Schlepperzenternut 39 geöffnete Halteventil 11 und durch die hydraulik normalen Steuerfunktionen ebenfalls geDruckleitung 6 in den Arbeitszylinder gelangen. Von schaltet werden. Fig. 2 zeigt die Senkstellung des Drehder Exzenternut 39 zweigt ein Nebenschluß 40 in eine Schiebers 10. In Abweichung zu Fig. 1 hat hier die Ventilbohrung 41 ab. Der Druck, der im Arbeits- Exzenternut 39 über eine Aussparung 43 und einen zylinder aufgebaut werden kann, ist demnach durch 35 Kanal 44 direkte Verbindung mit dem Raum 15. In den Schließdruck des Druckbegrenzungsventils 13 dieser Stellung kann also die Druckflüssigkeit vom bestimmt, da das vom Druckbegrenzungsventil 13 Arbeitszylinder 8 durch das Steuergerät 1 drucklos freigegebene Öl über eine Rückströmleitung 42 und zum Ölbehälter 2 zurückströmen,
über die Rückleitung 9 in den Ölbehälter 2 zurück- Mit entgegengesetzter Drehbewegung kann der fließen kann. Wie Fig. 1 zeigt, ist die Druckfeder 14 40 Drehschieber 10 in die Haltestellung nach Fig. 3 geentspannt, da der am Steuermittel 17 befindliche Ex- bracht werden. Das Halteventil 11 ist dabei geschloszenter die Platte nicht anhebt; der Schließdruck des sen, wodurch der Druck hinter dem Halteventil 11 Druckbegrenzungsventils 13 ist dadurch nur von der aufrechterhalten wird und das in das Steuergerät 1 Spannung der Zugfeder 20 abhängig. Entsprechend zufließende Öl in den Ölbehälter zurückfließen kann, der gewünschten Arbeitstiefe des Pfluges 31 wird die 45 Fig. 4 zeigt die Aushebestellung des Drehschiebers durch den Bowdenzug 21 auf die Zugfeder 20 aus- 10. Hier werden die Bohrung 41 und der Kanal 44 geübte Zugkraft mittels der einstellbaren Anschluß- durch die Mantelfläche des Drehschiebers 10 Übermutter 19 reguliert. Kommt nun das Tastrad 35 in deckt; das Druckbegrenzungsventil 13 ist dadurch eine Bodenvertiefung, bewirkt die Schwenkbewegung außer Wirkung, ebenso ist ein Rückfluß des Öles undes Tastarmes 34 eine Verminderung des Schließ- 50 möglich. Auf diese Weise wird der Arbeitskolben 7 druckes des Druckbegrenzungsventils 13. Dement- mit dem durch das Maximaldruckventil 12 bestimmsprechend tritt auch eine Druckminderung im Druck- ten Aushebedruck beaufschlagt,
system ein, wodurch der Pflug sich entsprechend derhas been inserted deeply into the ground, the 25 Both control options can thus equal rotary slide valve 10 of the control device 1 in the position for timely and independent use of partial pressure, as can be seen from FIG. It is also possible for the control unit to be optional. The pressure fluid can thus use an annular channel 38 in the rotary valve for the control of the depth regulation or transverse bore 37, the wheel pressure booster,
Via 10, an eccentric groove 39, via which the pressure line 6, which is open for the tractor's central groove 39, can also reach the pressure line 6 through the control unit. To be switched from. FIG. 2 shows the lowered position of the rotation of the eccentric groove 39, a shunt 40 branches off into a slide 10. In contrast to FIG. 1, the valve bore 41 branches off here. The pressure that can be built up in the working eccentric groove 39 via a recess 43 and a cylinder is therefore directly connected to the space 15 through channel 44. In the closing pressure of the pressure relief valve 13 of this position, the pressure fluid can be determined by the, since the From the pressure limiting valve 13 working cylinder 8 through the control unit 1 unpressurized released oil flow back via a return line 42 and to the oil container 2,
Via the return line 9 back into the oil container 2, the can flow with the opposite rotary movement. As FIG. 1 shows, the compression spring 14 40 rotary slide 10 is relaxed into the holding position according to FIG. 3, since the ex- located on the control means 17 are brought out. The holding valve 11 is closed and does not lift the plate; the closing pressure of the sen, whereby the pressure behind the holding valve 11 pressure relief valve 13 is only maintained by the and that in the control unit 1 tension of the tension spring 20 is dependent. Correspondingly inflowing oil can flow back into the oil container, the desired working depth of the plow 31 is 45 Fig. 4 shows the lifting position of the rotary valve through the Bowden cable 21 on the tension spring 20 the adjustable connection through the outer surface of the rotary valve 10 lock nut 19 is regulated. Now comes the jockey wheel 35 in covers; the pressure relief valve 13 is thus a depression in the bottom, causes the pivoting movement to be ineffective, as well as a backflow of the oil and the feeler arm 34 a reduction of the closing 50 is possible. In this way, the working piston 7 is pressurized by the pressure limiting valve 13.
system, which makes the plow move according to the
wegung absenken kann. Bei einer Bodenerhebung 55from the jockey wheel 35 relative to the plow31 completed loading. PATENT CLAIMS
movement can lower. If the ground is raised 55
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM43397A DE1108971B (en) | 1959-11-16 | 1959-11-16 | Control device for the hydraulic power lifting device on agricultural tractors |
CH1205660A CH381905A (en) | 1959-11-16 | 1960-10-27 | Control unit for the hydraulic system on tractors |
FR7037A FR1273641A (en) | 1959-11-16 | 1960-11-15 | Control unit for the hydraulic power plant of a tractor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM43397A DE1108971B (en) | 1959-11-16 | 1959-11-16 | Control device for the hydraulic power lifting device on agricultural tractors |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1108971B true DE1108971B (en) | 1961-06-15 |
Family
ID=7304655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM43397A Pending DE1108971B (en) | 1959-11-16 | 1959-11-16 | Control device for the hydraulic power lifting device on agricultural tractors |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH381905A (en) |
DE (1) | DE1108971B (en) |
FR (1) | FR1273641A (en) |
Cited By (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1557813B1 (en) * | 1966-10-19 | 1970-05-27 | Rheinstahl Hanomag Ag | Control device without jockey wheel to keep the working depth of a tillage device constant |
DE2705400A1 (en) | 1976-02-10 | 1977-08-18 | Jacques Bidon | TRACTOR, IN PARTICULAR FOR USE IN AGRICULTURE |
FR2591059A1 (en) * | 1985-12-05 | 1987-06-12 | Kubota Ltd | DEVICE FOR DETECTING THE WORKING DEPTH OF A ROTARY PLOW |
US5479992A (en) * | 1993-07-27 | 1996-01-02 | Dawn Equipment Company | Agricultural implement controller to compensate for soil hardness variation |
US5499683A (en) * | 1993-07-27 | 1996-03-19 | Dawn Equipment Company | Soil treating system with hydraulically actuated implement controller |
US5709271A (en) * | 1993-06-08 | 1998-01-20 | Dawn Equipment Company | Agricultural planter |
US8327780B2 (en) | 2009-10-16 | 2012-12-11 | Dawn Equipment Company | Agricultural implement having fluid delivery features |
US8359988B2 (en) | 2007-07-24 | 2013-01-29 | Dawn Equipment Company | Agricultural tillage device |
US8544398B2 (en) | 2010-09-15 | 2013-10-01 | Dawn Equipment Company | Hydraulic down pressure control system for closing wheels of an agricultural implement |
US8544397B2 (en) | 2010-09-15 | 2013-10-01 | Dawn Equipment Company | Row unit for agricultural implement |
US8636077B2 (en) | 2012-05-22 | 2014-01-28 | Dawn Equipment Company | Agricultural tool with structural housing for hydraulic actuator |
US8763713B2 (en) | 2012-01-27 | 2014-07-01 | Dawn Equipment Company | Agricultural implement with automatic down pressure control |
US8776702B2 (en) | 2010-09-15 | 2014-07-15 | Dawn Equipment Company | Hydraulic down pressure control system for an agricultural implement |
USRE45091E1 (en) | 2008-12-01 | 2014-08-26 | Dawn Equipment Company | Row-clearing unit for agricultural implement |
US8863857B2 (en) | 2011-02-23 | 2014-10-21 | Dawn Equipment Company | Row unit for agricultural implement |
US8910581B2 (en) | 2012-07-25 | 2014-12-16 | Dawn Equipment Company | Side dressing fertilizer coulter |
US8985232B2 (en) | 2012-08-20 | 2015-03-24 | Dawn Equipment Company | Agricultural apparatus for sensing and providing feedback of soil property changes in real time |
US9055712B2 (en) | 2010-09-15 | 2015-06-16 | Dawn Equipment Company | Agricultural apparatus with integrated controller for a row unit |
US9107338B2 (en) | 2010-09-15 | 2015-08-18 | Dawn Equipment Company | Agricultural systems |
US9107337B2 (en) | 2012-08-20 | 2015-08-18 | Dawn Equipment Company | Agricultural apparatus for sensing and providing feedback of soil property changes in real time |
US9144189B2 (en) | 2012-07-25 | 2015-09-29 | Precision Planting Llc | Integrated implement downforce control systems, methods, and apparatus |
US9192091B2 (en) | 2013-02-01 | 2015-11-24 | Dawn Equipment Company | Agricultural apparatus with hybrid single-disk, double-disk coulter arrangement |
US9215838B2 (en) | 2013-02-01 | 2015-12-22 | Dawn Equipment Company | Agricultural apparatus with hybrid single-disk, double-disk coulter arrangement |
US9226440B2 (en) | 2010-09-15 | 2016-01-05 | Dawn Equipment Company | Agricultural apparatus with hydraulic cylinder and manifold for a row unit |
US9232687B2 (en) | 2010-09-15 | 2016-01-12 | Dawn Equipment Company | Agricultural systems |
US9241438B2 (en) | 2014-02-05 | 2016-01-26 | Dawn Equipment Company | Agricultural system for field preparation |
US9271437B2 (en) | 2011-07-01 | 2016-03-01 | Charles H. Martin | Agricultural field preparation device |
US9288937B2 (en) | 2011-08-05 | 2016-03-22 | Precision Planting Llc | Apparatus, systems and methods for row unit downforce control |
US9615497B2 (en) | 2014-02-21 | 2017-04-11 | Dawn Equipment Company | Modular autonomous farm vehicle |
US9668398B2 (en) | 2014-02-05 | 2017-06-06 | Dawn Equipment Company | Agricultural system for field preparation |
US9723778B2 (en) | 2014-11-07 | 2017-08-08 | Dawn Equipment Company | Agricultural system |
US9848522B2 (en) | 2014-11-07 | 2017-12-26 | Dawn Equipment Company | Agricultural system |
US10444774B2 (en) | 2014-11-07 | 2019-10-15 | Dawn Equipment Company | Agricultural system |
US10477760B2 (en) | 2015-12-28 | 2019-11-19 | Underground Agriculture, LLC | Agricultural organic device for weed control |
US10548260B2 (en) | 2017-05-04 | 2020-02-04 | Dawn Equipment Company | System for automatically setting the set point of a planter automatic down pressure control system with a seed furrow sidewall compaction measurement device |
US10582653B2 (en) | 2014-11-07 | 2020-03-10 | Dawn Equipment Company | Agricultural planting system with automatic depth control |
US10645865B2 (en) | 2017-05-04 | 2020-05-12 | Dawn Equipment Company | Agricultural row unit with automatic control system for furrow closing device |
US10721855B2 (en) | 2014-02-05 | 2020-07-28 | Dawn Equipment Company | Agricultural system for field preparation |
US10980174B2 (en) | 2015-12-28 | 2021-04-20 | Underground Agriculture, LLC | Agricultural mowing device |
US11006563B2 (en) | 2017-05-04 | 2021-05-18 | Dawn Equipment Company | Seed firming device for improving seed to soil contact in a planter furrow with feature designed to prevent the buildup of soil on the outer surfaces by discharging pressurized fluid |
US11083134B2 (en) | 2015-12-28 | 2021-08-10 | Underground Agriculture, LLC | Agricultural inter-row mowing device |
US11197411B2 (en) | 2014-11-07 | 2021-12-14 | Dawn Equipment Company | Agricultural planting system with automatic depth control |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3306367A (en) * | 1964-02-10 | 1967-02-28 | Vevey Atel Const Mec | Hydraulic control arrangement |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2616350A (en) * | 1949-09-06 | 1952-11-04 | Robinson Garner Laverne | Depth controller |
US2714346A (en) * | 1951-05-04 | 1955-08-02 | Maurice E Valin | Hydraulically controlled farming implement |
GB772371A (en) * | 1954-11-25 | 1957-04-10 | Frederick William Manders | Improvements in or relating to tractor carried or mounted agricultural implements |
-
1959
- 1959-11-16 DE DEM43397A patent/DE1108971B/en active Pending
-
1960
- 1960-10-27 CH CH1205660A patent/CH381905A/en unknown
- 1960-11-15 FR FR7037A patent/FR1273641A/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2616350A (en) * | 1949-09-06 | 1952-11-04 | Robinson Garner Laverne | Depth controller |
US2714346A (en) * | 1951-05-04 | 1955-08-02 | Maurice E Valin | Hydraulically controlled farming implement |
GB772371A (en) * | 1954-11-25 | 1957-04-10 | Frederick William Manders | Improvements in or relating to tractor carried or mounted agricultural implements |
Cited By (67)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1557813B1 (en) * | 1966-10-19 | 1970-05-27 | Rheinstahl Hanomag Ag | Control device without jockey wheel to keep the working depth of a tillage device constant |
DE2705400A1 (en) | 1976-02-10 | 1977-08-18 | Jacques Bidon | TRACTOR, IN PARTICULAR FOR USE IN AGRICULTURE |
FR2591059A1 (en) * | 1985-12-05 | 1987-06-12 | Kubota Ltd | DEVICE FOR DETECTING THE WORKING DEPTH OF A ROTARY PLOW |
US5709271A (en) * | 1993-06-08 | 1998-01-20 | Dawn Equipment Company | Agricultural planter |
US5479992A (en) * | 1993-07-27 | 1996-01-02 | Dawn Equipment Company | Agricultural implement controller to compensate for soil hardness variation |
US5499683A (en) * | 1993-07-27 | 1996-03-19 | Dawn Equipment Company | Soil treating system with hydraulically actuated implement controller |
US8359988B2 (en) | 2007-07-24 | 2013-01-29 | Dawn Equipment Company | Agricultural tillage device |
USRE45091E1 (en) | 2008-12-01 | 2014-08-26 | Dawn Equipment Company | Row-clearing unit for agricultural implement |
US8327780B2 (en) | 2009-10-16 | 2012-12-11 | Dawn Equipment Company | Agricultural implement having fluid delivery features |
US9055712B2 (en) | 2010-09-15 | 2015-06-16 | Dawn Equipment Company | Agricultural apparatus with integrated controller for a row unit |
US11122726B2 (en) | 2010-09-15 | 2021-09-21 | Dawn Equipment Company | Agricultural systems |
US10238024B2 (en) | 2010-09-15 | 2019-03-26 | Dawn Equipment Company | Row unit for agricultural implement |
US8770308B2 (en) | 2010-09-15 | 2014-07-08 | Dawn Equipment Company | Row unit for agricultural implement |
US8776702B2 (en) | 2010-09-15 | 2014-07-15 | Dawn Equipment Company | Hydraulic down pressure control system for an agricultural implement |
US8544397B2 (en) | 2010-09-15 | 2013-10-01 | Dawn Equipment Company | Row unit for agricultural implement |
US10477752B2 (en) | 2010-09-15 | 2019-11-19 | Dawn Equipment Company | Row unit for agricultural implement |
US8544398B2 (en) | 2010-09-15 | 2013-10-01 | Dawn Equipment Company | Hydraulic down pressure control system for closing wheels of an agricultural implement |
US9232687B2 (en) | 2010-09-15 | 2016-01-12 | Dawn Equipment Company | Agricultural systems |
US9788472B2 (en) | 2010-09-15 | 2017-10-17 | Dawn Equipment Company | Row unit for agricultural implement |
US9107338B2 (en) | 2010-09-15 | 2015-08-18 | Dawn Equipment Company | Agricultural systems |
US11470754B2 (en) | 2010-09-15 | 2022-10-18 | Dawn Equipment Company | Agricultural systems |
US9226440B2 (en) | 2010-09-15 | 2016-01-05 | Dawn Equipment Company | Agricultural apparatus with hydraulic cylinder and manifold for a row unit |
US10506755B2 (en) | 2010-09-15 | 2019-12-17 | Dawn Equipment Company | Agricultural systems |
US9144187B2 (en) | 2010-09-15 | 2015-09-29 | Dawn Equipment Company | Agricultural apparatus with hydraulic cylinder and manifold for a row unit |
US9167740B2 (en) | 2010-09-15 | 2015-10-27 | Dawn Equipment Company | Row unit for agricultural implement |
US9192089B2 (en) | 2010-09-15 | 2015-11-24 | Dawn Equipment Company | Row unit for agricultural implement |
US8863857B2 (en) | 2011-02-23 | 2014-10-21 | Dawn Equipment Company | Row unit for agricultural implement |
US10806064B2 (en) | 2011-07-01 | 2020-10-20 | Charles H. Martin | Agricultural field preparation device |
US11375653B2 (en) | 2011-07-01 | 2022-07-05 | Charles H. Martin | Agricultural field preparation device |
US12058944B2 (en) | 2011-07-01 | 2024-08-13 | Charles H. Martin | Agricultural field preparation device |
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Also Published As
Publication number | Publication date |
---|---|
FR1273641A (en) | 1961-10-13 |
CH381905A (en) | 1964-09-15 |
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