An agricultural working device, such as a mulcher, is improved with a working rotor which is driven by a drive shaft and a cutting rail with a cutting edge which can be directed towards the working rotor. Sensors for acquiring parameters of working rotor and/or cutting rail are provided. An electronic control apparatus is provided with at least one encoder to set the cutting rail. A method for setting the position of a cutting rail of a working device, such as a mulcher, relative to a working rotor, is configured in such a way that the rotational speed of a drive shaft and the rotational speed of the working rotor are measured and compared with one another. When a ratio of the rotational speeds differs by a predefined threshold, a change in the position of the cutting rail is brought about.

A debris collector and associated systems and methods are disclosed. The debris collector is configured to receive and process debris, such as lawn debris, by way of a variety of intake systems, such as a basket and vacuum tube. After intake, the debris collector is configured to process the debris by way of an auger and agitators, so as to be passed through a blower fan for disposal.

A material reducing apparatus includes a rotary reducing component that has a central rotational axis. The material reducing apparatus includes a reducing element mount attached to the rotary reducing component and a reversible reducing element mounted to the reducing element mount. The reducing element includes a leading front side that has a first cutting edge and an opposite second cutting edge being radially inwardly positioned closer to the central rotational axis from the first cutting edge. The reducing element has a chip curl angle between about 79 degrees and 102 degrees. The reducing element has a radial height extending away from the rotary reducing component. The material reducing apparatus includes at least one chip evacuation arrangement that includes three depth control structures. The depth control structures that are axially adjacent the reducing element have radial heights less than or equal to 25% of the radial height of the reducing element.

A shredder (1) is provided for comminuting organic material to form shreds. The shredder has a shredding chamber (2) provided with rotatable cutting devices (3), wherein the shredder (1) furthermore includes a fan chamber (6) containing a fan (7) which is connected to the shredding chamber (2) via a passage (4), wherein the fan (7) is configured to generate a suction force which will suck the shreds out of the shredding chamber via the passage and will remove these from the fan chamber (6) via a discharge opening (8). In contrast to the known shredders, this shredder (1) no longer has a discharge opening in the shredding chamber and, in addition, no longer requires a calibration grille.

An apparatus for the comminution of a botanical feedstock includes a vessel, a screen positioned in the vessel above a first feedstock outlet and spaced from the top of the vessel, and a blade rotatably mounted above and generally parallel to the screen. The blade has a leading side, a trailing side, and a radial blade length. At least a portion of the leading side has a cutting edge and at least a portion of the trailing side has a downwardly extending trailing portion. The downwardly extending trailing portion has a lower edge having a plurality of discontinuities along a radial length of the trailing portion. The cutting edge is spaced from the upper surface of the screen by a first distance and a lowermost portion of the lower edge is spaced from the upper surface of the screen by a second distance.

The method of the invention comprises the following steps: (i) cutting the maize stalks so as the less leafy stalk segments, higher than 70 cm, stay on the field; (ii) cutting the less leafy stalk segments as close to the ground as possible; (iii) harvesting the less leafy stalk segments cut in step (ii); (iv) cutting the in step (iii) harvested less leafy stalk segments into 5-50 mm stalk sections; (v) providing a mechanical impact to the stalk sections of step (iv) to obtain a mix containing: f1. said spongy cores forming the superabsorbent pellets fraction, f2. said elongated fiber pieces forming the fibrous matter fraction, f3. and said leaf matter forming the leafy fraction,
(vi) separating the 3 fractions from each other;
(vii) recovering the three fractions f1-f2-f3; The invention also pertains to the so obtained products and to their uses in treatments of liquids or gases.

A plant vine chopper rotor drum assembly is provided for use in chopping machines. The rotor drum assembly has a plurality of rotor rings each ring having a plurality of angled blades that effectively cooperate with each other to guard each blade and the drum against the wrapping of clogging fibrous strands and other clogging material around the drum. The chopper rotor drum assembly incorporates a plurality of rotor rings spaced along and encircling and attached to a main drum tube and distributed in a cutting zone along and surrounding the longitudinal rotational axis of the drum tube with each rotor ring having a pair or a plurality of pairs of cutting blades attached to respective alternately angled mounting tabs that alternate to the left and to the right to the general plane of the rotor ring.

A plant-trimming apparatus comprises two spaced-apart end plates, a rotatable tumbler, a rotatable reel comprising a reel shaft and reel blades, two bearing blocks, each detachably connected to a respective end plate and rotatably supporting a respective end of the reel, a motor arranged to drive the reel and the tumbler, a bed bar assembly comprising a bed bar and a bed knife, the bed knife being in operative engagement with the reel blade for cutting of plant material from the tumbler, and a manually-operated locking mechanism operable to secure the bearing blocks and the bed bar assembly to the end plates. The apparatus can be easily disassembled for cleaning and re-assembled, without using tools.

An infeed system of a chipper or grinder includes a feed roller, a motor for rotating the roller, a hydraulic cylinder for adjusting an amount of crush force applied by the roller, a sensor, and a controller in data communication with the sensor and the cylinder. In operation, the controller determines whether the material is being effectively moved to the processing portion and whether the amount of crush force is at a maximum or lowest setting. The controller causes the cylinder to: (a) decrease the amount of crush force when the material is being effectively moved to the processing portion and the amount of crush force applied is not at the lowest setting; and (b) increase the amount of crush force when the material is not being effectively moved to the processing portion and the amount of crush force is not at the maximum setting.

A land preparation tool includes a tool body having a longitudinal axis; a cutting surface having a distal end and first and second blades positioned at the distal end; a mounting surface disposed on the tool body opposite the cutting surface, the mounting surface having an apex extending along about half of the mounting surface parallel to the longitudinal axis, a first mounting surface extending from the apex, a second mounting surface extending from the apex, and a recess disposed into the mounting surface; and a channel extending from the recess only partially into the tool body.