Abstract: A knife drive assembly for use in a harvesting header may be mounted near the center line of the cutter bar of the header. Mechanical power from the power unit behind the header (typically the combine power output shaft) may be translated for application to two knife assembly sections in the cutter bar at the front of the cutter table. Movement of the two knife assembly sections with this apparatus can be fully synchronized and 180 degrees out of phase, to maximize cutting effectiveness and minimize vibration of the header. The unitary drive assembly may allow for rapid repair and manufacture, and the size and weight of the knife drive assembly may represent a significant weight and balance advantage over the prior art.

Abstract: The cutter bar of a header including two sickle bars is driven by a center drive system including a rotary input drive member driven by a motor, first and second rotary members each driven by the drive member about a generally upstanding first rotational axis. Each of the rotary members has an eccentric drive system for driving a respective sickle bar. A flywheel is driven by the rotary input drive member for common rotation therewith and the first and second rotary members are driven by a common drive sprocket to rotate in the same direction about the first and second rotary axes.

Abstract: A harvesting machine includes a chassis; an engine to propel the harvesting machine; a header mounted on a front of the chassis; a cutter bar arranged on the header to cut crops during operation of the harvesting machine; a plurality of implements on the chassis configured to facilitate processing the crops cut by the cutter bar; at least one cutter bar load sensor arranged on the header and configured to collect cutter bar load data representing a load on the cutter bar resulting from cutting the crops; and a controller operatively coupled to the at least one cutter bar sensor. The controller is configured to receive the cutter bar load data, determine a cutter bar load value based on the cutter bar load data, and generate an adjustment command for an operational parameter associated with at least one of the implements based on the cutter bar load value.

Abstract: A header for an agricultural harvester comprising first and second drive arm assemblies for connecting to respective cutting assemblies, and a drive unit consisting essentially of a hydraulic motor operatively connected to the first and second drive arm assemblies. Operation of the drive unit results in substantially linear and opposed oscillating motion of the cutting assemblies.

Abstract: A header for an agricultural harvester comprising a frame and first and second anteriorly facing, epicyclical cutter bar knife drives connected to the frame. A roller shaft extends between and operatively connects the first and second epicyclical drives. The roller shaft operates to deliver to crop material to a header infeed conveyor. In addition, the anteriorly facing epicyclical knife drives effectively rid themselves of harmful dirt and debris thereby prolonging the service life of the epicyclical knife drives.

Abstract: The pivoting action sickle drive has a low profile allowing incorporation in or below a floor of a header of a plant cutting machine to allow passage of cut plant material thereabout. The drive includes a substantially flat rotatable input element, and a drive arm connected eccentric thereto for eccentric rotation along an epicyclical path. The arm extends to a connection with a pivot arm of a pivot element that connects to a knife arm that drives a sickle knife assembly, such that the pivot element, knife arm and knife assembly will be reciprocatingly driven by the eccentric rotation of the drive arm. A second drive can oppositely drive a second sickle knife assembly, such that opposite forces generated by the drives will cancel. The drives can be packaged in a forwardly tapered or curved enclosure, and the pivot elements can be correspondingly shaped to streamline the drives.

Abstract: In a sickle cutting system, it has been found that a significant reduction in average stubble length, which is calculated based on the distance crop is pushed forwardly without cutting occurring, can be obtained by a combination of features where the length of the cutting edge of each knife blade is increased to a length greater than 2.2 inches; the width at the rear of the ledger surface of each guard is increased to greater than 1.2 inches; and the front edge of the blade is formed with an apex to shed crop material to one or other side of the apex. Each blade has at least one cut out opening through the blade extending from a rear edge of the opening adjacent to but spaced from a rear edge of the blade toward the tip.

Abstract: A header for use by an agricultural harvester. The header includes a cutter bar that cuts crop material and includes a stationary knife section and a plurality of reciprocating knife sections extending along a portion of the stationary knife section. A substantial part of the length of the reciprocating knife sections do not extend along any portion of the stationary knife section.

Abstract: A drive coupler (102, 104) for coupling a reciprocating knife (106) to a drive member (112, 114) is provided, wherein the reciprocating knife (106) includes at least one elongate bar (120, 122, 180, 182) having a longitudinal extent and fixed to a plurality of blades (138), wherein the at least one elongate bar (120, 122, 180, 182) is supported on support members (140) that constrain the at least one elongate bar (120, 122, 180, 182) to reciprocate in a direction generally parallel to the longitudinal extent of the at least one elongate bar (120, 122, 180, 182), the drive coupler (102, 104) comprising: a first elongate strap (146, 162) configured to be attached to the at least one elongate bar (120, 122, 180, 182); a second elongate strap (146, 162) configured to be attached to the at least one elongate bar (120, 122, 180, 182); and an arrangement (152, 164, 187, 189, 193, 200) for (i) flexing the first elongate strap (146, 162) with respect to the second elongate strap (146, 162), (ii) for flexing the first

Abstract: In a sickle cutting system, it has been found that a significant decrease in cutting inefficiency, which is measured by calculating the area of the cutting process where crop is not immediately cut but is instead pushed forwardly by engagement with a surface of the system, can be obtained by a combination of one or more of the features where the cutting stroke is reduced from the conventional length of 3.0 inches to a value of the order of 2.0 inches; the length of the cutting edge of each knife blade is increased to a length greater than 2.2 inches; the width at the rear of the ledger surface of each guard is increased to greater than 1.0 inches; and the front edge of the blade is formed with an apex to shed crop material to one or other side of the apex.

Abstract: A drive arrangement for driving a first sickle bar section (42) and a second sickle bar section (36) of a harvesting platform (20) comprises a first gearbox (54) and the second gearbox (74) having an output drivingly connected to a respective first end of a respective sickle bar section (36, 42). Drive trains connect the first gearbox (54) and the second gearbox (74) to an input drive shaft (24). At least one of the drive trains comprises a belt drive. A synchronization transmission (82) is coupled to the second ends of the sickle bar sections (36, 42) and couples them in opposite movement directions.

Abstract: A slot driven low profile sickle drive has an input rotatable about an upstanding rotational axis and carries an eccentric captured in a slot in one end of a pivot arm pivotable about an upstanding pivotal axis. A power source is connected in rotatably driving relation to the input. The opposite end of the pivot arm connects to a knife assembly of a sickle. The input, eccentric and pivot arm are generally flat, and the power source is vertically coextensive therewith for incorporation in or below the floor of a header of a plant cutting machine. Rotation of the input causes epicyclical orbiting of the eccentric, resulting in sideward pivoting of the opposite end of the pivot arm and sickle knife. A second drive can oppositely drive a second sickle knife, such that opposite forces generated by operation of the drives will be largely canceled.

Abstract: A center knife drive for a sickle of a plant cutting machine having an upwardly facing cover and at least one output element reciprocatingly movable by the drive above the cover for moving a knife of the sickle in a sideward reciprocating cutting action, including at least one cleaning flap in connection with the output element positioned and configured for reciprocating forward and rearward movement thereby, disposed above the cover and configured for cleaning loose material therefrom during the movement and for pushing the loose material from the cover to accommodate upward movement of the drive within a space below or in a floor of the machine, clearing the material from the path of the output element, and improved heat dissipation.

Abstract: In a cutter bar having a upper and lower knife guards in cooperating pairs mounted on a support bar where each guard includes at least one point extending forwardly to define a channel therebetween in which the knife reciprocates, the upper knife guards are attached to an upper surface of the support bar by a compressible resilient pad between an under surface of the upper knife guard and the upper surface of the support bar, at least one hold down screw fastener engaged between the upper knife guard and the support bar which holds the upper knife guard on to the resilient pad and forms a fulcrum and at least one adjustment screw between the upper knife guard and the support bar behind the screw fastener so that adjustment of the screw increases an amount of compression of the compressible resilient pad.

Abstract: In a sickle cutting system, it has been found that a significant increase in ground speed while maintaining an acceptable level of cutting efficiency as measured by the average stubble length can be obtained by a combination of one or more of the features where the cutting stroke is reduced from the conventional length of 3.0 inches to a value of the order of 2.0 inches; the length of the cutting edge of each knife blade is increased to a length greater than 2.2 inches; the width at the rear of the ledger surface of each guard is increased to greater than 1.0 inches; and the front edge of the blade is formed with an apex to shed crop material to one or other side of the apex.

Abstract: In a sickle cutting system, it has been found that a significant increase in ground speed while maintaining an acceptable level of cutting efficiency as measured by the average stubble length can be obtained by a combination of one or more of the features where the cutting stroke is reduced from the conventional length of 3.0 inches to a value of the order of 2.0 inches; the length of the cutting edge of each knife blade is increased to a length greater than 2.2 inches; the width at the rear of the ledger surface of each guard is increased to greater than 1.0 inches; and the front edge of the blade is formed with an apex to shed crop material to one or other side of the apex.

Abstract: In a sickle cutting system, it has been found that a significant increase in ground speed while maintaining an acceptable level of cutting efficiency as measured by the average stubble length can be obtained by a combination of one or more of the features where the cutting stroke is reduced from the conventional length of 3.0 inches to a value of the order of 2.0 inches; the length of the cutting edge of each knife blade is increased to a length greater than 2.2 inches; the width at the rear of the ledger surface of each guard is increased to greater than 1.0 inches; and the front edge of the blade is formed with an apex to shed crop material to one or other side of the apex.

Abstract: In a sickle cutting system, it has been found that a significant reduction in average stubble length, which is calculated based on the distance crop is pushed forwardly without cutting occurring, can be obtained by a combination of one or more of the features where the cutting stroke is reduced from the conventional length of 3.0 inches to a value of the order of 2.0 inches; the length of the cutting edge of each knife blade is increased to a length greater than 2.2 inches; the width at the rear of the ledger surface of each guard is increased to greater than 1.0 inches; and the front edge of the blade is formed with an apex to shed crop material to one or other side of the apex.

Abstract: In a sickle cutting system, it has been found that a significant decrease in cutting inefficiency, which is measured by calculating the area of the cutting process where crop is not immediately cut but is instead pushed forwardly by engagement with a surface of the system, can be obtained by a combination of one or more of the features where the cutting stroke is reduced from the conventional length of 3.0 inches to a value of the order of 2.0 inches; the length of the cutting edge of each knife blade is increased to a length greater than 2.2 inches; the width at the rear of the ledger surface of each guard is increased to greater than 1.0 inches; and the front edge of the blade is formed with an apex to shed crop material to one or other side of the apex.

Abstract: In a sickle cutting system, it has been found that a significant increase in ground speed while maintaining an acceptable level of cutting efficiency as measured by the average stubble length can be obtained by a combination of one or more of the features where the cutting stroke is reduced from the conventional length of 3.0 inches to a value of the order of 2.0 inches; the length of the cutting edge of each knife blade is increased to a length greater than 2.2 inches; the width at the rear of the ledger surface of each guard is increased to greater than 1.0 inches; and the front edge of the blade is formed with an apex to shed crop material to one or other side of the apex.

Abstract: The present invention relates generally to an apparatus that chops off a weed at or below ground level and applies a small shot of herbicide to the freshly cut weed base. More particularly the present invention is a rechargeable, battery operated, solenoid driven, and hand held device with a herbicide reservoir on the handle and a reciprocating cutter blade with a directed herbicide spray nozzle at the base.

Abstract: A draper platform (100) has a knife drive (250) for driving a knife assembly (140) that is supported on and between two adjacent support arms (246) that pivot with respect to each other and with respect to the frame (102, 104, 106) of the draper platform (100) to which the two adjacent support arms (246A, 246B) are pivotally connected. two resilient mounts couple opposing sides fo he sub-frame to the two adjacent support arms.

Abstract: A compact epicyclic drive includes a pinion rotatable about a ring gear and an eccentric element fixedly connected to the pinion so as to be rotated thereby, a knife head bearing supported on and extending around the eccentric element, and a knife head assembly connected in driving relation to a sickle knife assembly. The knife head assembly includes an element supported on and extending around the knife head bearing and configured so as to transfer sidewardly directed components of rotations of the eccentric element into sideward reciprocating movements of the sickle knife assembly. The eccentric element, knife head bearing, and knife head assembly are generally flat and axially coextensive, contributing to the compactness of the drive. The sickle drive is adapted to incorporated into or beneath a floor or pan of a header of an agricultural harvesting machine.

Abstract: A compact epicyclic drive includes a pinion rotatable about a ring gear and an eccentric element fixedly connected to the pinion so as to be rotated thereby, a knife head bearing supported on and extending around the eccentric element, and a knife head assembly connected to a sickle knife assembly. The knife head assembly is configured so as to translate rotation of the eccentric element into sideward reciprocating movements of the sickle knife assembly, and to transfer forces resulting from the movements to a housing supporting the drive. Two of the drives can be utilized for reciprocatingly driving two of the sickle knife assemblies in opposite directions, such that the transferred forces will at least partially cancel one another.

Abstract: An epicyclical drive having a generally flat, disk shaped flywheel, a flywheel to pinion carrier in the form of an inner hub of the flywheel, and a flywheel support bearing and structure incorporated into the flywheel itself, all of which are concentric about a rotational axis of the flywheel so as to be axially compact, and so as to be particularly well adapted for being located beneath, or incorporated into, the floor of a grain header of an agricultural harvesting machine, for reciprocatingly driving knife knives of a sickle thereof. In particular, the flywheel support bearing is located in an annular space between the inner hub and an outer flange which is rotated by a belt or other drive for rotating the flywheel.

Abstract: A compact epicyclic drive includes a pinion rotatable about a ring gear and an eccentric element fixedly connected to the pinion so as to be rotated thereby, a knife head bearing supported on and extending around the eccentric element, and a knife head assembly connected in driving relation to a sickle knife assembly. The knife head assembly includes an element supported on and extending around the knife head bearing and configured so as to transfer sidewardly directed components of rotations of the eccentric element into sideward reciprocating movements of the sickle knife assembly. The eccentric element, knife head bearing, and knife head assembly are generally flat and axially coextensive, contributing to the compactness of the drive. The sickle drive is adapted to incorporated into or beneath a floor or pan of a header of an agricultural harvesting machine.

Abstract: A compact epicyclic drive includes a pinion rotatable about a ring gear and an eccentric element fixedly connected to the pinion so as to be rotated thereby, a knife head bearing supported on and extending around the eccentric element, and a knife head assembly connected to a sickle knife assembly. The knife head assembly is configured so as to translate rotation of the eccentric element into sideward reciprocating movements of the sickle knife assembly, and to transfer forces resulting from the movements to a housing supporting the drive. Two of the drives can be utilized for reciprocatingly driving two of the sickle knife assemblies in opposite directions, such that the transferred forces will at least partially cancel one another.

Abstract: A header for a plant cutting machine uses a plurality of compact sickle drive mechanisms incorporated into or beneath a floor or pan of the header at a location between and spaced from the sides or ends of the header, each of which mechanisms can be configured for reciprocatingly driving two knife assemblies disposed in end to end relation, in opposite directions, such that potentially vibratory forces, including those generated by the moving masses of the knife assemblies, at least substantially cancel one another and thus are not transferred to structure of the header. As a result, the knife assemblies can each be relatively short, to lessen the mass thereof so as to be capable of being operated at higher speeds, to enable operation of the header at faster ground speeds.

Abstract: A drive arrangement for split sickle bar sections of a harvester having a long cutter bar such as a combine, swather, mower-conditioner or the like utilizes separate drives for each sickle bar section, and provides for synchronizing the movement of the sickle bar sections so that they reach the respective ends of the reciprocating path simultaneously. In one form series connected first and second hydraulic motors are used, and the first motor in the series connection is reduced in speed from that which would be obtained from the full flow of a pump, by passing a portion of the pump fluid flow to a flow line leading to the second motor, a bleed valve bleeds off a portion of the flow in the flow line to regulate the second motor speed and position to match the speed and position of the first motor in response to signals indicating the position of the sickle bar sections. The sickle bar sections are thus synchronized.

Abstract: A knife section for a mower provides a base portion and at least one knife extending longitudinally from the base portion. Each knife includes a single breakage hole having a length extending longitudinally from the base. The breakage hole includes opposed non-parallel sides defining a variable width hole along its length. The hole provides for permitting the knife to break along a region which transversely intersects the non-parallel sides.

Abstract: A tractor attachment assembly releaseably connected to a front end of a work vehicle for conditioning land. The tractor attachment assembly is multi-functional because, among other things, it is capable of clearing small trees and shrubs while being able to roll soil and place grooves into the ground for land conditioning. The tractor attachment assembly is provided with an at least one toothed plate and a sub-plate for supporting the at least one toothed plate. The sub-plate is preferably provided with a nut and bolt disengagement mechanism to release the at least one toothed plate from the sub-plate. The tractor attachment assembly is also provided with a framed connection member that is connectable to the front end of the work vehicle and positioned to support the sub-plate when the sub-plate is under stress.

Abstract: A drive for transferring sideward motion from a first or driving elongate sickle knife to a second or driven elongate sickle knife longitudinally aligned with the first sickle knife. A double rack and pinion arrangement is used including at least one pinion mounted at a fixed location, a first sidewardly extending rack is connected to the first sickle knife for sideward movement therewith and a second sidewardly extending rack is connected to the second sickle knife for sideward movement therewith, the racks both being enmeshed with the pinion such that sideward movement of the driving knife causes corresponding opposite sideward movement of the longitudinally aligned driven knife.

Abstract: A cutting mechanism for harvesters, both for harvesting grain and crop with low located crop positions has a cutter bar; a cutting mechanism trough; a plurality of skids arranged near one another in a traveling direction and connecting the cutter bar with the cutting mechanism trough, the skids being movable between an upper and a lower position in a vertical direction; an arresting device arranged in a front region and fixing the skids in the upper position, the connecting mechanism trough having framed parts; screw connections which mount the skids at their rear ends directly on the frame parts of the cutting mechanism trough; a road device which lifts the skids to the upper position and arrests the skids; the cutting mechanism trough having framed parts; rigid screw connections which mount the skids at their rear ends directly on the frame parts of the cutting mechanism trough; and means for arresting the skids in the upper position and selected from the group consisting of a rope device which lifts and ar

Abstract: Low energy non-interference unbiased shear process employing a thin dull blade laterally moving between upper and lower stators. Blades and stators are not biased or pressed together while cutting, as is done with a pair of scissors. Instead, the dull cutting blade is guidingly supported by said upper and lower stators, and the upper and lower stators are sized and formed such that a thickness of a cutting zone (M) formed therebetween exceeds the thickness of a blade zone (VZ) formed by the dull cutting blade, by a total controlled gap (Z) of preferably between 1 and 5 mils (0.0254-0.127 mm). The cutting blade is preferably thin in relation to grass cross section, preferably 10 to 50 mils (0.254 mm-1.27 mm). This arrangement provides two true shearing sites for grass at upper and lower leading edges of the blade. Adequate blade swipe frequency is provided, with gentle C-shape blade profiles yielding self-cleaning blades with lower running friction. Tensile failure of the grass is avoided.

Abstract: An adjustable double sickle cutterbar assembly using sickle bar hold-downs that minimizes the interference to the flow of cut crop material rearwardly in the header, thus to reduce the catching of cut crop material.

Abstract: A self-propelled combine harvester having a mechanically actuated directional control valve for a hydraulic piston-cylinder unit used for driving the cutter bar in an oscillatory manner. A switching bracket is used to axially move the mechanically actuated directional control valve from a first end position to a second end position and from the second end position to the first end position. A latch is used to periodically latch a piston valve stationary. A first plunger and second plunger are alternatively and axially moved by a first spring and second spring. The first plunger and the second plunger alternatively move the valve piston from the first end position and the second position and from the second position to the first position. The valve piston will be released from the first end position or the second end position one end position from which it was arrested or latched.

Abstract: A crop harvesting header for mounting on a propulsion vehicle such as a swather tractor or combine harvester includes a main frame structure supporting a crop receiving table with a cutter bar across a front of the table and side drapers on the table for moving the cut crop toward a discharge location of the header. The frame is divided into a central frame portion and two separate wing frame portions each arranged for pivotal movement relative to the central portion about a pivot axis extending in a plane parallel to the forward direction and intersecting the cutter bar so that, as the wing frame portions pivot, the cutter bar flexes in the area adjacent the respective pivot axis over a small angle of the order of 4 degrees to maintain the cutter bar following the ground.

Abstract: Crop harvesting headers include a sickle knife having a cutter bar defining a flange projecting forwardly from the header frame structure and extending across the header frame structure with a plurality of knife guards mounted on the cutter bar at spaced positions thereon so as to project forwardly therefrom. Each knife guard has at least one guard carrier lug for attachment to the flange by a bolt passing through a hole in the lug and a corresponding hole in the flange with a head on one end of the bolt and a nut on the other end of the bolt for clamping the lug to the flange. On crop harvesting headers of this type, it is often desirable to have the ability to change the knife guard angle to suit the crop and ground condition and this is obtained by providing a first elongate bar type shim located between the lug and the flange and a second shim located on the bolt.

Abstract: The cutter head of a windrower may carry a sickle bar or a disc as the cutting element. Each type of cutting element requires a different drive power to obtain a given set point speed. To determine the type of cutter being used, the magnitude of the signal required to bring the cutting element to a given set point speed is measured and compared to limits defining first and second, non-overlapping, ranges of signal magnitudes, one range being typical of sickle bar operation and the other range being typical of disc operation.

Abstract: A cutting mechanism for harvesters, both for harvesting grain and crop with low located crop positions has a cutter bar; a cutting mechanism trough; a plurality of skids arranged near one another in a traveling direction and connecting the cutter bar with the cutting mechanism trough, the skids being movable between an upper and a lower position in a vertical direction; an arresting device arranged in a front region and fixing the skids in the upper position, the connecting mechanism trough having framed parts; screw connections which mount the skids at their rear ends directly on the frame parts of the cutting mechanism trough; a road device which lifts the skids to the upper position and arrests the skids; the cutting mechanism trough having framed parts; rigid screw connections which mount the skids at their rear ends directly on the frame parts of the cutting mechanism trough; and means for arresting the skids in the upper position and selected from the group consisting of a rope device which lifts and ar

Abstract: A vehicle with a working device, especially a chopping device, with a drive element, which is connected to an output shaft of the vehicle, whereby the transmission element can be moved on bearings and the working device can change position with respect to the vehicle.

Abstract: An end knife guard for a cutterbar assembly has a body portion forming a lower section and an upper section spaced in relation to one another to define a horizontal slot within which a knife section is confined, and freely movable. The lower section has an inboard lateral side edge that forms a cutting surface. An outboard lateral side edge forms a surface that tapers laterally inward from the forward end of the body portion to form an open area for discharge of trash at the end of the cutterbar assembly. The tapered outboard edge is positioned adjacent to the upright wall of a platform end divider cover. Such that the open area for discharge of trash is between the guard outboard edge and the divider cover, allowing trash to drop from the guard while maintaining the divider cover outer wall close to the end of the cutterbar assembly.

Abstract: A device for preventing rocks and dirt from entering a combine including a plurality of grain saver dam sections secured to a bracket by a bolt, bushing, mounting bracket and nut. The grain saver dam section includes a series of cutout sections and horizontal support sections.

Abstract: A cutting device for agricultural machines comprising an upper cutting blade, a lower cutting blade, between the upper and lower cutting blades a separating plate is arranged, a counterblade fixed to the chassis of the agricultural machine, a driving mechanism for driving the upper and lower cutting blades with an alternative linear movement, each upper and lower cutting blade comprises a set of individual blades separated between each other, the counterblade comprises a "U" shaped fixed counterblade wherein each arm of the U-shaped counterblade defines an individual counterblade comprising an upper portion and a lower portion, wherein the upper portion is arranged above the upper cutting blade and the lower portion is arranged below the lower cutting blade whereby a shearing effect is created between each upper and lower cutting blades and the fixed counterblade.

Abstract: A guard for covering a wheel pulley of a powered sickle-bar mower. The inventive device includes a semi-circular panel positionable over the wheel pulley of the mower. A pair of lateral panels extend from opposed ends of the semi-circular panel and cooperate with a pair of mounting projections to secure the semi-circular panel to a pulley housing of the mower. The device cooperates with a cover plate of the mower to fully enclose the wheel pulley to preclude an entrance of debris into the pulley housing which could jam the wheel pulley.

Abstract: The mowing apparatus is made up of a long, narrow cutting assembly, a boat and two booms, one on each side of the boat, attaching the cutting assembly to the boat. There is a flotation tank at each end of the cutting assembly and the forward end of each tank is pivotally attached to the aft end of a boom. The forward ends of the booms are pivotally attached to the boat at about gunwale height and well toward the bow. All the pivotal connection axes are horizontal and perpendicular to the vertical plane through the centerline of the boat, allowing the cutting assembly to be raised and lowered between the surface of the water and the bottom of the body of water. The raising and lowering are done by allowing water into the tanks to cause the cutting assembly to sink and forcing the water out of the tanks with air to raise the cutting assembly. The cutting assembly is a sawtoothed blade operating between two sawtoothed plates. The end wise oscillations of the blade are powered by a pneumatic actuator.

Abstract: A multi-crop harvester/windrower farm implement may be pushed before a tractor or harvester, to harvest and/or windrow a crop. The implement includes a frame having a plurality of horizontal arms at ground level, which support and position a crop dissociating structure to uproot or sever the stalks of the crop. The implement may include a crop reel to move the uprooted or severed crop to a draper belt, which deposits the crop in a windrow outward of the tractor wheels. In one embodiment, the crop dissociating structure includes interchangeable rod weeder and sickle attachments, allowing a user to choose between uprooting the crop, or severing the stalks of the crop. A plurality of adjustment structure may be included to adjust the altitude of the crop dissociating structure with respect to the crop, facilitating use of the implement on multiple crops. The rod weeder, crop reel, sickle, and draper belt may be driven to rotate by hydraulic motors attached to the PTO system of the tractor or harvester.

Abstract: A light weight, portable aquatic vegetation cutter having a handle disposed at one end of a mounting rod, a motor at the other end of the mounting rod, the motor being disposed essentially centrally between two reciprocating type cutting blade assemblies ranging in opposite directions from the motor, the handle being adapted substantially to indicate the horizontal disposition of the cutting blade assemblies and permitting their realignment relative to the direction in which aquatic vegetation cutting takes place, the position of the motor with the cutting blade assemblies, being adjustable in two directions relative to the vertical, that are perpendicular to each other, a boat mounting attachable from the mounting rod, providing three additional directions of yieldable freedom of motion, audible and visual means for signaling a problem in cutting ability of the aquatic vegetation cutter, a switch enabling momentary reversal of the polarity of DC current to the motor, for freeing matter caught between the too

Abstract: A clipper-type bush cutter comprises a mount part provided on the side of a power source, an upper part of a head unit connected rotatably within a predetermined angle range back and forth with respect to the mount part, and a lower part of the head unit connected rotatably through 360 degrees in the right and left directions at the bottom of the upper part and for reciprocatably supporting clipper-type cutting blades.A first relative angle adjusting device is disposed between the upper part and the mount part and a second relative angle adjusting device is disposed between the lower part and the upper part.

Abstract: Disclosed is a mowing apparatus, which includes a pair of first and second cutting members slidably superposed with each other, each of the members including a plurality of aligned cutting teeth; mechanism for moving the first cutting member relative to the second cutting member reciprocably within a predetermined range in the direction of the aligned cutting teeth at a substantially uniform speed; and a drive source for driving the moving mechanism. The moving mechanism includes a solenoid actuator having first and second coils and a plunger provided reciprocatingly movably between the first and second coils. The plunger is connected to the first cutting member.