Abstract: A shredding machine has a rotary cutter and a fixed cutter. The rotary cutter includes a cutter part with a spiral cutting edge and a flute, and a column part for rotatably holding by a holding member for rotation of the rotary cutter. The fixed cutter has a cutting edge contacting with the cutter part of the rotary cutter. In rotating the rotary cutter, longitudinal slips of documents are fed between the cutters so that the documents enter the flute of the rotary cutter to cut the slips into chips by cooperation between the cutting edge of the rotary cutter and the cutting edge of the fixed cutter.

Abstract: The disclosure relates to an apparatus for granulating excess material in the production of plastic article by means of knives (41) disposed at one end of a feeder screw (20) and cooperating with a number of preferably fixed counter knives (41) and a grid (57), each knife rotating with the screw (20) having a seat (40) which extends between an end plate (26) and a ring (31) most proximal the end of the screw (20) and being fixed therein at the ends, a knife blade (41) adapted to the configuration of the seat (40), and a bar (42) for fixedly clamping the knife blade (41) in the seat (40).

Abstract: A housing for a paper shredder with a slit-like paper feed disposed on one side of the housing and a slit-like paper discharge disposed on the opposite side of the housing. The housing has an elongated shape, the dimension of length being a multiple of the dimension in width, where on each narrow side of the paper discharge support surfaces are disposed, with which the paper shredder can be placed on a waste receptacle. The width of the support surface is selected such, that one of the support surfaces is considerably larger than the width of the edge of the waste receptacle, while the other support surface has a width only negligibly greater than the width of the edge of the waste receptacle. It is additionally possible to provide a clamping device in the area of one support surface as security against sliding of the paper shredder placed on the waste receptacle.

Abstract: A disposable, double-edged rotor knife and a disposable, double-edged bed knife for use in plastic granulating machines. The rotor knife has a general "Z" shape and is held in sandwiched engagement to the rotor of the machine by a clamp that has a wedge shaped bottom. The clamp wedges the rotor knife into a wedge shaped channel formed in the rotor when a bolt that does not pass through the rotor knife is tightened. In one embodiment, the longitudinal axis of the bolt is parallel to a plane normal to the axis of rotation of the rotor, and in a second embodiment a ten degree angle is formed between the axis of the bolt and the plane. The bed knife is keyed to the machine.

Abstract: A suction cleaner for use in sucking relatively large refuse, the cleaner including a suction chamber, a dust chamber communicating with the suction chamber, the dust chamber including a plurality of edged agitators having first blades, to which a second blade is faced so as to shred the refuse to small pieces, the second blade being retainable either at an operative position or at an inoperative position at which the second blade is kept away from the first blades.

Abstract: A paper shredder for accommodating paper of varying stacks of thickness bound together with staples and the like. A pair of low speed feed rollers are disposed within the device for engaging the paper and for moving the paper into a contoured throat which guides the paper into a primary brush assembly having a set of wire bristles that are rotating at a very high rate of speed. As the paper makes contact with the wire bristles, the paper is pulled along the throat, and simultaneously shredded as it is pulled into the shredding chamber. A stationary wire brush assembly is mounted within the shredding chamber includes a set of long wire bristles that permits the bristles of the two brush assemblies to mesh so that as the bristles of the primary brush assembly are rotated they mesh with the bristles of the stationary brush assembly thereby discharging the shredded paper bits, staples, paper clips and other objects that become lodged in the primary brush bristles the shredding chamber.

Abstract: Disclosed is an apparatus for cracking the husks of nuts comprising a cylindrical rotor having a plurality of cracking projections on its circumference, a semicircular suspension stator having a plurality of cracking projections on its inner surface, the stator being positioned against a corresponding sector of the cylindrical rotor with a downward decreasing gap left between the stator and the rotor, and a hopper with an opening at the bottom for dispensing nuts to the gap between the stator and the rotor. The nutcracker according to the present invention permits simultaneous cracking of nuts of different sizes at an increased efficiency.

Abstract: A mulcher-chopper of the type in which a horizontally disposed blade is mounted on a driven vertical shaft within a comminuting chamber. The blade is provided with deep and sharp serrations, thereby increasing the effective blade length and enhancing efficiency. Desirably the blade is oriented at an angle so that rotation provides a downdraft that helps move material into the comminuting chamber. A rigid bar, or anvil, extends diametrically across the comminuting chamber, and the blade is juxtaposed thereto, thus providing a highly effective shearing action.

Abstract: A granulator for comminuting scrap material has an improved rotor blade assembly. The granulator is of the type having a pair of spaced-apart, parallel bed knives mounted stationarily in the granulator. An arcuate perforated screen is mounted below the bed knives for the passage of comminuted material through apertures in the screen. A rotor axle is mounted between and parallel with the bed knives. At least one blade is mounted on the axle for rotation with the axle. The blade has a peripheral contour with a plurality of spaced-apart cutting tongues extending outward. The cutting tongues define a circular path closely spaced to the bed knives and screen for shearing scrap.

Abstract: A rotary cutting apparatus in which the cutting of thin material is possible without the use of a curved blade. The fly and bed knives are positioned according to the formulaC=R-.sqroot.R.sup.2 -(tangent S.times.L).sup.2where C is bed knife camber, R is cutting radius, S is shear angle and L is rotor length. As a result of this geometry, uniform fly knife to bed knife clearance is maintained across the face of the rotor.

Abstract: A paper shredder includes a stator housing on which stator blades are adjustably mounted and a rotor assembly on which rotor blades are securely attached. As the rotor turns within a comminuting chamber, the rotor blades and the stator blades provide a scissors-like cutting action. The stator blades are fixed onto the stator housing with their cutting edges aligned in parallel with the axis of rotation of the rotor assembly. Each rotor blade lies in a plane which is skewed with respect to the axis of rotation, and the cutting edge of each rotor blade is substantially concentric with the axis of rotation. In the preferred embodiment, the rotor and stator blade assemblies are enclosed by three sizing screen quadrant sections. One quadrant section remains open for receiving paper into the comminuting chamber. The paper remains inside the comminuting chamber until it is small enough to pass through the openings of the sizing screen.

Abstract: A device for use with a rotating cutting knife of a forage harvester to prevent the production of long cobs. The device includes a support member mounted on each cutting knife having a bevelled front face positioned to engage a cob face and support the cob in its longitudinal dimension as a knife cuts the cob along its lateral dimension. The support member is adjustably mounted on the knife between an operative position wherein the bevelled face of the support member is in substantially colinear relationship with the bevelled face of the knife and an inoperative position wherein the bevelled face of the support member is spaced from the bevelled face of the cutting knife.

Abstract: Apparatus for converting blocks of foamed synthetic plastic material into chips has a severing device which removes from a block a continuous layer or a series of discrete layers of foamed material, a severing device with a series of coaxial rotary disc-shaped knives which subdivide each layer into a plurality of parallel elongated strips, and a severing device which converts the strips into discrete chips. Each chip has a substantially rhomboidal cross-sectional outline. The chip forming severing device has a shaft which is parallel to the shaft that carries the disc-shaped knives of the device that converts the layer or layers into strips, and the shaft of the chip forming severing device carries one or more cutters with straight or helical edges. The unit which advances the layer or layers past the disc-shaped knives of the strip forming severing device has several endless belt conveyors which advance the strips all the way into the range of the chip forming severing device.

Abstract: This is a food-cutting apparatus wherein: a cutting blade is disposed on a back surface of a cutting plate so as to protrude its front tip from an opening provided in the cutting plate; the cutting plate is disconnectably mounted on a mounting plate having a saddlelike engaging recess at its middle portion; the mounting plate engages at its engaging recess rotatably with a supporting rod interposed between a pair of arms provided on the supporting plate which is provided in a back side of the cutting plate; a width of the cutting blade is shorter in dimension than a length of an interval between the pair of arms; and, interposed between a rear portion of the mounting plate and the supporting plate are a spring and an adjusting means for adjusting a protruding amount of the front tip of the cutting blade.

Abstract: A crushing apparatus for crushing synthetic resin molded products as wastes into the form of pellets. This crushing apparatus comprises a housing formed at top with a hopper into which pieces of molded products are discharged and at bottom with a dropping opening through which finely crushed material drop, and a driving shaft rotatably mounted on the middle of said housing. On the driving shaft are mounted rotating blade for rough crushing for roughly crushing the pieces of molded products and rotating blades for fine crushing for finely crushing the same, said both rotating blades being coaxially mounted. The lower portion of the rotating blades for rough crushing is covered with a cover member so that roughly crushed pieces may be repeatedly crushed without dropping into the dropping opening. If the pieces of molded products charged through the hopper have their size caught by the rotating blades for fine crushing, they are crushed into the form of pellets by the rotating blades for fine crushing.

Abstract: The invention relates to a cutting mill for the comminution of runners, injection moulding parts, blown moulding parts and so forth in operation of a synthetic material processing machine. Waste or reject parts becoming available should, if possible, be led back again to the process cycle of the machine after comminution to granulated size for use as a regenerate. For this purpose one makes use of a cutting mill having a cylindrical driven rotor mounted in a housing, over the periphery of which rotor a plurality of adjacently positioned cutting element groups are arranged, which cooperate with at least one stationary blade provided in the housing, wherein a sieve for filtering of the comminuted material extends over a part of the boundary of the rotor.

Abstract: A hog granulator for plastic material in which a plurality of longitudinal knives are arranged on a rotor inside a cutting chamber to engage in a cooperative cutting action with bed knives on the cutting chamber walls. A plurality of spaced, longitudinal pockets in the peripheral surface of the rotor bring cooling air to the cutting surfaces, and ribs are arranged across these pockets to reduce power requirements by preventing excessively large pieces of plastic material to be reduced from being received into and taking up residence in these pockets.

Abstract: An apparatus for uniformly dispensing particulate food materials onto a moving article which comprises a hopper for holding a supply of the particulate and having a horizontally disposed orifice through which the particulate material can exit, a rotatable drum located below the orifice and having a plurality of spaced fins protruding radially therefrom and disposed on a zig-zag pattern and operable to counteract the tendency of the particulate material to fall off the drum, and a scraper adapted to engage the drum surface between the fins and operable to follow the zig-zag pattern of the fins to lift particulate material off the surface of the drum and guide it to a discharge precipice over which it falls onto the moving article.

Abstract: There is provided a centrifugal grinder which utilizes an internal grinding surface in the shape of a surface of revolution. A rotor is mounted coaxially within the grinding surface and has a central cavity defining at least one pocket through which material in the central cavity can contact the grinding surface. Material for grinding is delivered to the central cavity, and means are provided for rotating the rotor. Further means are incorporated in the rotor for applying water to the grinding surface.

Abstract: Continuous scrap edge trimmings are fed from a sheet metal slitter into a scrap chopper incorporating a rotor shaft supporting axially spaced and circumferentially spaced elongated straight cutting bars each having a plurality of selectable straight cutting edges. Each rotary cutting bar revolves past a stationary straight cutting bar also having a plurality of selectable straight cutting edges, and each cutting edge is positioned at a compound angle relative to planes including the axis of the rotor to produce scissor-like shearing of each strip. Each stationary cutting bar is positioned adjacent a spring biased anvil and is supported with the anvil for remote adjustment relative to the path of the corresponding cutting bars on the rotor. Each edge trimming is fed into the cutting bars by a corresponding pair of feed rollers one of which is spring biased and the other of which is independently driven by a corresponding motor.

Abstract: An apparatus for crushing articles, such as aluminum beverage cans. The crushing apparatus comprises a rotatable, polygonal-shaped drum having blades mounted on each flat outer surface of the drum which project outwardly beyond the respective surface. The articles to be crushed are introduced into the area between the drum and a spring-loaded pressure plate, and on rotation of the drum, the blades engage the articles and move them into the nip between the drum and pressure plate to crush and flatten the articles. The apparatus also includes a quick release mechanism in which the pressure plate can be readily released to correct a jamming situation.

Abstract: A device for the comminution or other treatment of bulk material comprises one or more modular units of prismatic, preferably cubic, shape with two intersecting throughgoing bores, one of them being circular and the other square in cross-section. A rotary shaft carrying one or more tools extends axially in the circularly sectioned bore of at least one module and is driven by a motor fastened to a face thereof; the square-sectioned bore forms an inlet and an outlet for the goods to be treated. At least the apertured sides of each module have passages facilitating its connection to an adjoining module or to a cover; other attachments on the solid sides of the unit may be provided with channels for the circulation of a cooling fluid.

Abstract: A forage harvester including an imperforate peripheral shield for the cutterhead extending from the shear bar in the direction of rotation and a plurality of parallel elongated bars mounted on the face of the shield adjacent the cutterhead periphery and disposed at an obtuse angle to the direction of rotation, preferably greater than the obtuse angle of the cutterhead knives to the direction of rotation.

Abstract: An improved shear bar for cooperative interaction with the cutterhead of a forage harvester is disclosed. The shear bar structure includes a multiplicity of elongate rib-like projections on the top surface thereof extending lengthwise away from the cutterhead. A scraper for the lower infeed roll is also disclosed to have similar projections on the top surface thereof.

Abstract: A method and apparatus for recovering metal containers of a selected type from a collection of trash is disclosed. The apparatus includes pneumatic and magnetic separators for removing extraneous debris. The separated containers are crushed and weighed. Compensation is issued in response to the weight of the separated containers. The separated containers are stored in an overhead compartment for collection and transportation.

Abstract: A device is disclosed for smoothly, continuously, and more effectively shredding laterally-extended film material of indefinite length without jerking the film material into the device with excessive force. Cooperating cutting edges are used--one serrated, another smooth.

Abstract: Crushing apparatus employs a pair of rotatable crusher drums mounted to rotate about vertical axes to crush material such as mineral ore, fed through a gap between the drums by means such as scraper-chain conveyor. The drums are mounted on pivoting rocker arms which are adjustable to vary the crushing gap. The drums are hollow and are driven in opposite directions by hydraulic drive motors located inside the drums. Conveniently, the hydraulic motors have rotors connected to radial flanges inside the drums and stators fixed to the rocker arms.

Abstract: Apparatus for breaking up vegetable matter is disclosed. The apparatus may be stationary, material being delivered thereto for treatment, or mobile; e.g., a lawn mower which is moved over a lawn to cut grass. Other mobile embodiments will include apparatus for reaping or harvesting crops more generally. In both the stationary and mobile forms, the apparatus disclosed includes an elliptical blade obliquely mounted on a shaft such that the periphery of the blade generates a cylindrical surface upon rotation of the shaft. Material is cut by the shearing engagement of the periphery of the blade with an edge lying on the cylindrical surface. Cut material is carried into the rotational "cylinder" and discharged radially therefrom. In preferred stationary embodiments of the invention the "cylinder" will be positively defined by a drum having inlet and outlet openings in the cylindrical surface thereof, the openings defining the edge at which initial cutting is effected.

Abstract: The present disclosure relates to a knife construction adapted for positioning within cut out seat portions of a rotor. The base of the knife is provided with a downwardly extending relatively narrow leg at the front face thereof which is adapted to engage base portions of the rotor seat so as to form an area of high sealing contact between the engaging surfaces and thus prevent liquified, i.e. fluid acting under high pressures, plastic material from flowing underneath the knife and thus undesirably altering its position vis-a-vis the rotor. A further embodiment includes an elevated or stepped pad forming the seat for receipt of the knife, the stepped or elevated front face of the pad forming a continuation of the blade face of the knife so as to distribute the forces imparted by such liquified plastic material over a larger combined area and thus reduce the force thereof upon the knife/seat interface.

Abstract: The invention relates to a shredding machine, more particularly for shredding fibrous, lignin-containing or analogous materials. It comprises an endless belt carrying grinding tools such as gouges and forming an upper lap onto which the material to be defibred is delivered. The front portion of said belt rotates about a countershaft. The shredding machine, moreover, comprises a fixed end stop member located above the countershaft, while the lower profile of said stop member is adapted to the passage of the gouges. Means are also provided which cooperate with the said stop member to prevent the passage of thick fragments of the material to be defibred. The invention can in particular be applied to the grinding or defibring of pieces of wood, logs, branches, planks and similar lignin-containing materials.

Abstract: The present disclosure relates to a size reduction apparatus such as a granulating machine of the type for cutting plastics and the like. The granulating machine includes a chamber provided with a driven rotor having a plurality of cutting elements mounted on the periphery thereof, each cutting element having in turn a plurality of spaced cutting knives. The cutting knives cooperate with stationary bed knives to comminute materials fed into the cutting chamber. The downstroke side of the cutting chamber is further provided with an access opening normally closed during cutting operations by a cover, which may be of particularly heavy slotted construction and which provides a backup surface for the material being comminuted. The disclosed granulating machine is particularly useful in comminuting large chunks of plastic material such as heavy purging, thick sheet and cast blocks. Machines of this type are designated as hog type granulators in the industry.

Abstract: A cutting machine for cutting ligneous materials into small pieces comprises a toothed cutting cylinder and a reaction member. In a mobile version of the machine the reaction member is in the form of a toothed felling cylinder 14, which is tangentially mounted with the cutting cylinder within a frame. The cutting and felling cylinders are coupled to a mechanism for driving them in rotation in such manner that their angular speeds are equal. The number of cutter blades carries by the cutting cylinder is equal to, or an integral multiple of, the number of teeth on the felling cylinder. The frame is mounted on a vehicle chassis so as to be rotatable relative thereto about two axes at right angles to each other. Jacks are provided for orientating the frame relative to the chassis which itself is tiltable by jacks with respect to a driving undercarriage.