Abstract: A sheet material cutting apparatus in which a pair of blades comprising a movable blade and a fixed blade are arranged, and the movable blade reciprocates to cut sheets. A drive device is mounted on the cutting apparatus, which drive device includes a drive arm to actuate the movable blade and a connecting lever having a split groove for connecting the lever to the drive arm. The movable blade is driven with the aid of the connecting lever and the drive arm of the drive device. The drive of the movable blade is controlled by elasticity of the split groove in the connecting lever. When load exceeding a predetermined amount occurs at the movable blade, the split groove in the connecting lever permits the drive arm to come off.

Abstract: The anvil rotor on a wood chip slicing machine is connected to its drive shaft via shear pins which extend into the hub of the rotor from a coupling which is mounted on the shaft. The coupling provides bearings for rotation of the rotor hub thereon when the shear pins are sheared as a consequence of an overload or load shock condition. The overload protection mechanism is applicable to other machines.

Abstract: A chip slicer for slicing wood chips such as for use in a pulp preparation procedure with an annular housing having knives therein and a rotor therein with anvil means for carrying wood chips against the knives with a shaft extending coaxially for diving the rotor, a driving hub mounted on the shaft and connected to it, a driven hub rotatably mounted by bearings on the driving hub with each of the hubs having annular plates and shear pins extending axially between the plates of a strength to transmit normal rotational power and to shear upon forced stalling of the rotor with the driven hub permitting continued rotation of the driving hub within the driven hub and continued rotation of the shaft with forced stalling of the rotor.

Abstract: Grinding mill apparatus for grinding biomass, said apparatus including a substantially box-like steel housing having a top inlet and a bottom outlet; a plurality of anvils pivotally engaging the housing and held in a fixed position by shear pins; a rotor mounted for rotation about a horizontal axis within the housing, the rotor provided with cutting bars orbiting in close proximity to the anvils for fragmenting the biomass; and a grate system for discharging material of a desired size through the outlet of the housing. The housing includes a back wall which is integral with the side walls for reducing metal fatigue and also includes a side wall access opening with access cover for insertion and removal of the cutter bars of the rotor and insertion and removal of grate member sections. The rotor includes two or more sections, each section defining a portion of a cylinder axially offset from adjacent sections for aerodynamic reaons and for reasons of strength.

Abstract: A processing apparatus for solid waste including a rotor with a plurality of blades mounted thereon for shredding solid waste in corporation with a number of counterblades. A prescreening system is provided adjacent the inlet to the shredding elements so as to allow small abrasive items to be removed from the waste prior to shredding. A flexible cleaning system is provided for cleaning waste wrapped about the rotor between the blades. Further, a system is provided for preventing nonshreddable materials from jamming the rotor blade/counterblade system and for diverting such nonshreddable materials to a designated hopper.

Abstract: A high-output mixer, for the refining of intitially comminuted material and mixing with bleaching chemicals before introducing these in a bleaching tower, includes a horizonatal, ring-shaped mixing/refining zone betwwen a rotor disk as a lower part and a removable stator unit as an upper part.

Abstract: An improved cone crusher with an eccentrically driven crushing cone, crushing jacket outside of the cone defining a crushing nip therebetween, the cone is driven in an oscillating manner tilting about its vertical axis and is connected to a driven through a universal joint having a one way clutch connected between the joint and a drive shaft with a support for the cone and a cap having a reduced portion which can shear in torsion, and means for holding the cone on a support with controllable force.

Abstract: A cross-beam at the front end of a vehicle body carries knives which are rotatable between a position in which they extend into a conveyor duct and an upper position for inspection and/or sharpening. A pronged pusher moves fodder material gathered by a pick-up from the knives to the duct, when the material passes to a cross-conveyor for deposition of the fodder material. The vehicle advantageously has a short wheelbase.

Abstract: A submersible motor pump assembly having an improved driving connection between the motor and pump. The motor shaft and pump shaft are disposed in end-to-end relation and a bolt extends through an axial passage in the pump shaft and the projecting end of the bolt is threaded in an axial opening in the end of the motor shaft. The outer or opposite end of the pump shaft is formed with a recess that communicates with the passage and the head of the bolt is fixed against rotation with respect to the pump shaft by a bolt retainer which is disposed with the recess. A shear pin interconnects the mating ends of the two shafts to provide a driving connection. The hand of the thread on the bolt is such that rotation of the motor shaft, after shearing of the shear pin, will cause the bolt to be unthreaded from the motor shaft to prevent locking up of the shafts.

Abstract: A hydraulic drive arrangement for a shear-type shredder includes an electrically operable control circuit, including a jam sensor external to the hydraulic fluid circuit, for sensing jamming conditions in the shredder and reversing the flow in the fluid circuit only when a true jamming condition is sensed. The jam sensor is located in the electrical power circuit to the electric motor driving the hydraulic fluid pump for sensing the load on the motor. An electric discriminator circuit responds to the sensor to distinguish between load changes due to true and momentary jamming conditions in the shredder. An actuator responsive to the discriminator actuates a flow-reversing valve in the hydraulic circuit to reverse fluid flow therein to reverse the shredder and thereby clear the jamming condition.

Abstract: A forage harvester adapted to be drawn by and powered from a tractor includes a feed roll mechanism for receiving and feeding crop material to a cutterhead mechanism which then supplies cut-up crop material to a blower for transfer to a forage wagon. A main drive shaft on the harvester is driven by the tractor PTO and drives the cutterhead mechanism and the blower. A drive mechanism supplies motive power from the main drive shaft to drive the feed roll mechanism and any harvester attachments in forward or reverse and includes a single normally disengaged electrically engageable electric clutch and a solenoid-operated forward/reverse transmission normally spring-biased in forward and shiftable into reverse when its solenoid is energized. Torque sensor devices are provided to mechanically disconnect the feed roll mechanism and any harvester attachment from being driven by the transmission when an overload occurs.

Abstract: An improved macerator adapted to shred crop material and having an annular perforated die ring and a roller operative within the die ring to extrude crop material through the perforations as the die ring and roller are power-rotated. The roller is journalled on a pivotable arm which is interconnected with the macerator frame by a shearable linkage permitting the roller to shift to an inoperative position if a material overload or a foreign object is encountered. A lock is automatically effective to positively retain the roller in the inoperative position until the condition can be corrected.

Abstract: A hydraulically actuated jam release system for a jaw type rock crusher wherein a massive, mechanically rigid retracting plate is disposed behind the crusher's stationary jaw to engage the entire width of the jaw to hold the stationary jaw in its operative position. Mechanical locking pins are hydraulically actuated by vertical hydraulic cylinders to mechanically lock the retracting plate in its forward position, and separate horizontal hydraulic retracting cylinders are provided to retract the retracting plate when the mechanical locking pins are disengaged therefrom, and to return the retracting plate to its forward position after the non-crushable material has been released from the crushing chamber of the crusher. The entire hydraulic system for the jam release is hydraulically operated through a series of suitable hydraulic valves preferably located at a central control station.

Abstract: One end of the mobile jaw of a jaw crusher is supported on the crusher frame by an eccentric shaft and a connecting rod supports the other mobile jaw end on a crossbeam pivotally mounted on the frame. The crossbeam has a rear extension accessible from outside the frame and a control wedge is positioned on a bracket affixed to the frame between the bracket and the crossbeam extension. A safety system acts on the crossbeam extension for preventing pivoting thereof when the force applied by the mobile jaw to the crossbeam remains below a predetermined value, the safety system pressing the crossbeam extension against the control wedge.

Abstract: In a thresher, means for independently mounting cutters and for replacing each cutter without disturbing other cutters, the rotor or the fixed cutter mounting means.

Abstract: A method and apparatus for use in pulverization and/or segregation which is suitable for obtaining the desired quality of the pulverized materials. Such pulverization is performed by restricting the discharge rate of the mixture through the discharge opening and thereby controlling the quantity and time the mixture remains within the pulverizer. The pulverizer is provided with a weir at the discharge end of the drum or cylinder for such restricting purpose. Also, beaters disposed within the pulverizer are provided with safety means enabling the beaters to pivot when a relatively stiff constituent is encountered in the mixture.

Abstract: A rollermill having a pair of grinding rolls, one fixed and one movable to enable separation of the grinding surfaces thereof, the movable roll being mounted on a pair of pivoted arms, a spring being provided for urging the movable roll into grinding contact with the fixed roll, there being a pair of rigid members held against relative movement by a shear pin for non-resiliently maintaining said movable roll in grinding contact, the shear pin being adapted to fail when a roll-separating force is established in excess of the sum of the force applied by the spring and the force necessary to cause said shear pin to fail, whereby in the event of failure of said shear pin said grinding surfaces continue to be maintained in grinding relationship resiliently by said spring.

Abstract: Shearing structure for materials' reduction equipment wherein a scissor-type shearing function is preserved, as between the blades and cutter bars used, from an initial shearing position throughout passage of the blade tip toward, at, and past the shearing edge of associated anvil or cutter bar structure. Each blade tip is provided with an apex, the same mating with an apex recess in the cutter bar structure which defines an outermost extremity of the blade travel path through such cutter bar structure.

Abstract: A shaft which rotates at high torque and low speed has a plurality of upright plates which are slightly shorter than the inlet funnel in which it is fitted. Stripper fingers in fixed locations protrude towards the shaft and extend between the plates. A wall having a circular arc form emanates from the rear of the inlet funnel and goes over tangentially into a smooth bottom of an outlet chute to which a back pressure device can be connected.

Abstract: Cutting or shearing structure wherein cutter or shearing blades are revolvably mounted yet pinned to hubs keyed to a central shaft. The shaft of hub structure is constructed for elimination of broken shear pin points. The shear pins themselves are disposed transversely relative to the shaft and are so positioned as to prevent lateral play of the blade ends as these pass through the spaces between operatively associated cutter blades.