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Class 172/744 - Vertically adjustable


Subclass of Class 172 - Earth working
Definition: Apparatus in which the earth working element is selectively
No. of patents: 35
Last issue date: 06/02/2009


NumberTitleIssue Date
7540333Row unit down pressure assembly
A down pressure assembly for incorporation into an agricultural implement to be pulled by a tractor (10) has an attachment frame (21) for attachment between a portion of the agricultural implement and at least two wheels (22) of a row unit (1...
06/02/2009
6516895Tool shank mounting assembly
A mounting assembly for a shank including a shank holder having a passage for receiving the shank, the passage having at one end opposite tapering surfaces which define with the leading edge of the shank opposite tapering spaces for receiving wedge member...
02/11/2003
5829535Common depth control adjustment for a ground opener
An agricultural apparatus comprises a main frame with ground wheels supporting the frame for movement across the ground and a plurality of ground engaging openers mounted on the frame for engaging the ground. Each opener includes a depth control wheel mou...
11/03/1998
5794714Finish dirt scraper
This invention relates to a dirt leveling device adapted for towing by a tractor which is characterized by one or more chisels attached to a transverse shaft on the front of the dirt leveling device having a rotatable relationship thereto, and a dirt leve...
08/18/1998
5762147Tractor front mount for implement attachment and use
This invention is a simple, safe, and inexpensive beam structure for tractor forward mounting of a blade (24). A pivot plate (11) is mounted at the tractor lower mid-section. Parallel beams (12) are positioned through the pivot plate (11) and extend beyon...
06/09/1998
5601147Agricultural rig pressure adjustment with overcenter toggle
Down pressure structure for providing an adjustable down force on a rig of row crop implement such as a cultivator includes an overcenter toggle connected to the rig for pivoting about a toggle axis between a first and second positions. The toggle has a p...
02/11/1997
5573072Operating position adjustment levers for cultivator tools
An apparatus for adjusting the operating position of a cultivator tool includes a tool bar with a frame secured thereto, a tool arm pivotally mounting the cultivator tool on the frame, a bracket having a plurality of holes therein mounted on the frame, an...
11/12/1996
5485886Adjustable agricultural tool holder
A holder for an agricultural tool. The holder has a shaft with first structure at a first location for mounting at least one agricultural tool to the shaft. The shaft has a portion that is movable guidingly in first and second opposite directions relative...
01/23/1996
5462123Tillage implement with on-the-go depth control of angle adjustable disc gangs
The working depth of obliquely angled disc gangs on the implement can be readily adjusted from the tractor seat with a single hydraulic cylinder through the use of mechanical linkage that couples the hydraulic cylinder with all of the disc gangs for simul...
10/31/1995
5361848Agricultural cultivator
Improvements are disclosed for independent adjustment of the gauge wheel, disc hillers, stabilizer disc and, if desired, the rear, central sweep for an agricultural cultivator unit. The adjusting mechanism includes a screw jack which is easily accessible ...
11/08/1994
5337832Repositioning mechanism for an agricultural implement
A repositioning mechanism for an agricultural implement. The mechanism has an adjusting rod with a length, a receptacle for the adjusting rod, cooperating structure on the adjusting rod and receptacle for relatively moving the adjusting rod and receptacle...
08/16/1994
5255617Ridge preparation tool for seed planting equipment
The ridge preparation tool is adapted to be attached to a seed planter directly ahead of the trench-forming structure of the planter so as to skim off the crest of the ridge for the production of a clean, relatively narrow strip of prepared soil in which ...
10/26/1993
5191943Three-point hitch attached grader with adjustable blades
A grader especially adapted for use in association with a tractor having a three-point hitch with the grader being capable of use in cutting, moving, spreading and leveling all types of soil, aggregate and the like. The grader can also be used to carry, s...
03/09/1993
5129282Mechanism for selectively repositioning a farm implement
A mechanism for adjusting the height of a farm implement/tool of the type to be carried by a drawing vehicle includes a connector for supporting a farm implement/tool in an operative position. A guide directs sliding movement of the connector selectively ...
07/14/1992
5090141Adjustable blade holder
The invention provides automated adjustment of the height of a trenching blade. There is a blade holder having a generally vertical channel defined therein, and support means for carrying the blade holder behind a vehicle at a height above the ground. A t...
02/25/1992
5076180Trash clearing brush unit for a planter unit
A trash clearing brush unit for use ahead of a planter unit including a pair of circular brushes rotatably mounted to a vertical support bar and angularly inclined toward one another. The support bar is attachable to a planter unit and vertically adjustab...
12/31/1991
4928774Cultivator with improved disc positioning means
An adjustment means for a cultivator disc which provides lateral, vertical and angular adjustment means. A plurality of discs are mounted in parallel on a gang frame, and may be individually adjusted in the field to exact, predetermined positions establis...
05/29/1990
4867248Shank mounting assembly for soil opening point
A shank mounting assembly for a soil opening point permits adjustment of the spacing between a pair of mounting bolts of the assembly for permitting attachment of the assembly to farm implement shanks having bolt holes of various spacings. The assembly in...
09/19/1989
4819737Row crop cultivator
A row crop cultivator particularly adapted for ridge-hill and minimum tillage farming conditions. The cultivator carries a number of tools including spaced hilling disks, a coulter wheel and a sweep for effectively pitching soil and cutting crop residues ...
04/11/1989
4786204Clamping apparatus with bi-directional clamping device
A clamping device for exerting clamping forces in two directions to a shank between a pair of spaced clamping members having a transverse stop. The device includes an elongated bolt like body having a pair of axially spaced sections, a head at one end and...
11/22/1988
4738316Adjustable shank mounting for an earthworking tool
A shank mounting arrangement for a disk hiller or similar implement which provides simple and precise angular adjustment of the shank independently of vertical adjustment. An upright slotted tube is fixed to a support beam and an upright apertured shank i...
04/19/1988
4580506Liquid fertilizer attachment
A fertilizer knife adapted to be attached to a planter. A housing is adjustably attached to the fertilizer knife and an adjustable mechanism is provided for permitting the knife to be adjusted vertically with respect to the housing, thereby adjusting the ...
04/08/1986
4560011Cultivator row unit with ridger/bedder implement
An inter-row crop cultivator for use particularly in severe residue conditions such as in minimum tillage conservation applications is disclosed. A leading gauge wheel providing support and soil surface tracking is immediately trailed by two laterally dis...
12/24/1985
4558746Lawn working implement
A lawn working implement having rigid teeth which is towed behind a small tractor or other such apparatus to thatch, sow or work a lawn. The implement is compact and highly maneuverable, yet applies pressure to its rigid tines to work the lawn effectively...
12/17/1985
4483401Trash clearing assembly for farm implements
A double disc attachment for farm implements operating to present a debris-cleared area ahead of the furrow opener of the implement, has a peripherally notched disc with one of the discs spaced from and leading the other. Each disc is rotatably carried by...
11/20/1984
4452320Adjustable Danish tine
An adjustable Danish tine for a farm implement includes a notched vertical run for attachment to a tool bar by a U clamp....
06/05/1984
4441266Skid shoe mounting arrangement for snow blower
A skid shoe mounting arrangement detachably mounted to the side of the snow blower auger housing such that the skid shoe mounting assembly can be easily reassembled to a plurality of preset heights relative to said auger housing....
04/10/1984
4425973Trash clearing disc assembly for planters
A double disc, debris-clearing assembly has a suspension member for releasable attachment to a farm implement and on which is rigidly secured an upright standard. A guide rigid to and depending from the suspension member beneath the standard has a tiltabl...
01/17/1984
4269535Earth working implement control system
An operating and down-pressure hydraulic control system for vehicle-mounted implements such as earth compactors and the like. The assembly of hydraulic cylinders, valving and a hydraulic accumulator provided herein operates as a hydraulic system to raise,...
05/26/1981
4269541Implement for the laying of cables and the like
A plow-like trench cutter is carried by a slide movable vertically between spaced upright ways rigidly coupled to a tractor. The trench cutter has a passage for supplying a line, such as cable or pipe, generally to the bottom of the cutter so that when th...
05/26/1981
4240508Power-driven rotary ground working implement
A ground working implement comprises a frame, a rotary ground working unit supported by the frame and rotatable about a horizontal axis, a transmission for the working unit, a cover assembly covering the working unit and including a movable cover, and a h...
12/23/1980
4219947Plow or digging machine automatic blade adjusting and locking system
A plow apparatus for laying cable, pipe, tile and the like underground having a blade with an upwardly extending shank portion for support. A blade holder connects the shank to a plow-pulling crawler tractor and the holder has an opening therein to receiv...
09/02/1980
4195697Shovel coupling with angle of attack adjustment
A coupling for attaching a sweep shovel to a cultivator shank including an adapter block rigidly affixed to the shank with the shovel and adapter block including transverse aperture arrangements fo receiving fastening devices with selective arrangement of...
04/01/1980
4068723Floating beam plow
A beam for supporting an earth working tool, such as a moldboard plow, which is made so that it will float vertically over obstacles that do not hook the earth working tool, and which also includes linkage that will trip to provide clearance over obstacle...
01/17/1978
3935906Adjustable height soil conditioner with frame extending rearwardly from cultivating implement
A soil conditioner for use in combination with a cultivating implement drawn behind a tractor to break up the soil and leave a prepared seedbed in a single operation. The conditioner is mounted to a framework extending rearwardly behind the cultivator. It...
02/03/1976
 
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