Methods of designing zeolite materials for adsorption of CO2. Zeolite materials and processes for CO2 adsorption using zeolite materials.

Methods and apparatuses are provided for detecting parameter. The method includes: acquiring at least one intake air quality parameter of an air intake area of an air purifier and at least one output air quality parameter of an air discharging area of the air purifier; determining a purification parameter corresponding to the intake air quality parameter of the air intake area and the output air quality parameter of the air discharging area; and outputting the purification parameter.

Embodiments of the present disclosure provide for metal-organic materials (MOMs), systems that exhibit permanent porosity and using hydrophobic MOMs to separate components in a gas, methods of separating CO2 from a gas, and the like.

A method for treating a synthesis gas from a gasification step. The synthesis gas is cooled to condense heavy organic impurities and water. At the end of the cooling step, light organic impurities and inorganic impurities are adsorped by at least one adsorption bed. The water and heavy tars are separated by decantation from the step of cooling the synthesis gas. At least one adsorption bed is regenerated by temperature-modulated or pressure-modulated desorption.

A vacuum filter backflushing system having an air recapturing adapter coupled to a vacuum motor's air exhaust port which recaptures a portion of exhaust air and introduces the air into a recaptured air passage. The recaptured air passage is coupled to an air flow director which is configured to direct air to an air filter. The air flow director is configured to selectively prevent air from flowing through the filters in a normal air flow direction and allow the air in the recaptured air passage to backflush the filter by dislodging particles from air filter media. The recaptured air passage can terminate after a last air filter, such that the recaptured air passage is pressurized, or the recaptured air passage can recouple back into the air exhaust port or the air recapturing adapter, such that the air is in constant motion in the recaptured air passage.

The storing and destocking of hydrogen in a hydride tank (10) comprises purification performed in at least one trap (1, 1A, 1B) filtering the impurities contained in the hydrogen entering the tank to be stored and regeneration of said at least one trap, using the heat carried by the hydrogen exiting the tank after it has been destocked.

An additive manufacturing device includes at least one liquefier assembly that receives filament material from at least one feedstock and extrudes the material in a flowable form. A thermal drying system removes water vapor and heats compressed air to a preselected temperature set point to form conditioned air. At least one enclosed filament path houses and guides the filament material from a supply to the at least one liquefier assembly. The enclosed filament path is exposed to the conditioned air from the thermal drying system so as to keep the filament material dry as it is fed to the at least one liquefier assembly.

Example embodiments include systems for use in a wellhead platform. The system may comprise a separator subsystem, a scrubber subsystem, a first stage compressor subsystem, and a second stage compressor subsystem. The separator subsystem may comprise a separator inlet section for receiving multi-phase raw mixtures, a separator container body for housing the received multi-phase raw mixture, and a separator gas outlet section for separating gas. The scrubber subsystem may comprise a scrubber inlet section connected to the separator gas outlet section, a scrubber container body, and a scrubber gas outlet section for separating gas. The first stage compressor subsystem may be operable to receive gas separated from the scrubber subsystem, compress the received gas, and output the compressed gas. The second stage compressor subsystem may be operable to receive compressed gas from the first stage compressor subsystem, further compress the received compressed gas, and output the further compressed gas.

An apparatus and method for separating a natural gas production stream from hydrocarbon well operations into a gas component and a sand and liquid component is described. More specifically, a sand separator comprising a cylindrical body, a production stream inlet port, a gas outlet port and a solid and liquid drain port is described. The cylindrical body has an inner cavity with an inner cone having one-way gas vents and a stationary auger wrapped around the inner cone. The production stream inlet port includes a pipe having a curved tip that directs the production stream into the body and around the inner cone and stationary auger, causing the production stream to slow down and the components to separate.

A carbon dioxide capture system includes a first capture system and a second capture system. The first capture system including a first absorber that causes carbon dioxide contained in a combustion exhaust gas to be absorbed in a first absorbing liquid. The second capture system causes carbon dioxide contained in a combustion exhaust gas to be absorbed in a second absorbing liquid. The second rich liquid releases carbon dioxide at a lower temperature than the first rich liquid.

A compressed air drying device that dries compressed air discharged from a compressor includes a dryer and a controller. The dryer includes a drying container, which is filled with a desiccant, and a discharge valve arranged in a discharge port that discharges drainage produced by regeneration of the desiccant. The controller obtains an ambient temperature and controls opening and closing of the discharge valve. When the ambient temperature is a temperature at which freezing occurs, the controller moves the compressed air, which is discharged from the compressor and heated, into the dryer and restricts opening of the discharge valve.

Disclosed herein is a system and method for condensing moisture in a gas stream entering or leaving a bioreactor, the system comprising: a contact condenser container fluidically coupled to the bioreactor through an exhaust line; a condensate accumulator fluidically coupled to the contact condenser container through at least a first condensate line and a second condensate line; the condensate accumulator further fluidically coupled to the bioreactor through a condensate overflow line; a first condensate control device disposed on the first condensate line and configured to control a flow of condensate leaving the contact condenser container and entering the condensate accumulator; and a second condensate control device disposed on the second condensate line and configured to control a flow of condensate leaving the condensate accumulator to be mixed with the gas stream.

A method for producing ozone is disclosed. The ozone is separated by an adsorbent separation system from a mixture of oxygen and ozone. The adsorbent separation system operates by adsorbing ozone at higher pressures, then desorbing the ozone at normal pressures. Increased ozone concentrations result from these steps while the oxygen component can be recovered and used in producing the mixture of oxygen and ozone.

The invention relates to a facility for purification by adsorption of gaseous flow comprising at least one impurity which has a corrosive effect on carbons steel, comprising a radial adsorber comprising a housing with an outer envelope made of carbon steel; a vertical perforated inner grating consisting of a corrosion-resistant material, a vertical perforated outer grating, an adsorbent which is held vertically by the outer grating and the inner grating, and allows at least partial blockage of the corrosive impurity, and a means for allowing a centrifugal circulation of the gaseous flow.

Provided is an apparatus for capturing a target component from a gas including a rotating packed bed and a packed bed. The rotating packed bed has a first absorbent inlet, a first absorbent outlet, a first gas inlet and a first gas outlet. The packed bed has a second absorbent inlet, a second absorbent outlet, a second gas inlet and a second gas outlet. The first absorbent outlet is in connection with the second absorbent inlet to form an absorbent flow path that sequentially passes through the rotating packed bed and the packed bed. The second gas outlet is in connection with the first gas inlet to form a gas flow path that sequentially passes through the packed bed and the rotating packed bed.

A carbon dioxide separation and capture apparatus includes an absorption tower configured to cause an absorbing liquid to absorb a carbon dioxide gas contained in a process gas and a regeneration tower configured to cause the absorbing liquid from the absorption tower to release the carbon dioxide gas. The carbon dioxide separation and capture apparatus further includes an inlet concentration meter configured to measure concentration of an acid component in the process gas supplied to the absorption tower and an outlet concentration meter configured to measure concentration of the acid component in the process gas discharged from the absorption tower. Also included in the carbon dioxide separation and capture apparatus are a supplementary absorbing liquid supply mechanism configured to supply a supplementary absorbing liquid to the main unit and a controller configured to control an amount of the supplementary absorbing liquid supplied to the main unit by the supplementary absorbing liquid supply mechanism based on the concentrations of the acid component measured at the inlet concentration meter and the outlet concentration meter.

A ductless fume hood suitable for the removal of various chemical materials including toxic and non-toxic gases, vapors, particles, dust and unpleasant odors from a fluid stream. The ductless fume hood uses electronic devices and software to enable real time monitoring of gas levels in parts per million.

Sorption drying system for dehumidification of a moist gas stream, comprising a mass (1) of absorbing material, a moist gas stream (2) arranged to flow through at least a part of the absorbent mass, and a heated stream of regeneration gas (3) arranged to flow through at least a part of the absorbent mass. The sorption drying system further comprises means (4) for deflecting a part of the dehumidified gas stream after flowing through the absorbent mass, a cooler (5) for cooling the deflected dehumidified gas stream, and means (6; 7) for returning the cooled deflected dehumidified gas stream to the moist gas stream at the inlet into the absorbent mass. At least a part of the cooled deflected dehumidified gas stream is arranged to flow through the absorbent mass in a channel separated from the moist gas stream.

The present invention corresponds to a device for extracting water from the environment by means of a liquid desiccant. The device comprises a means for capturing water from the environment using a liquid desiccant, an extraction chamber, a first duct through which liquid desiccant with water flows from the capture means to the extraction chamber, a second duct through which liquid desiccant flows from the extraction chamber to the capture means, a reservoir for depositing water extracted from the liquid desiccant in the extraction chamber, a third duct through which water flows from the extraction chamber to the reservoir, a means to create a vacuum within the extraction chamber, and a control device that controls the heating element. The extraction chamber comprises a container located at the bottom of the extraction chamber, in which the water captured by the liquid desiccant is extracted and a heating element located within the container

A waste water insert has a wall surrounding a vertical bore. A horizontal flange extends outwardly from the upper end of the wall and has a lip formed on its outer periphery. The horizontal flange of the waste water insert is super-imposed over the horizontal flange of a waste water strainer located in a bathtub, sink or the like. The wall of the insert extends downwardly through the cylindrical wall of the waste water strainer with the two walls being spaced from each other by virtue of the cylindrical wall of the insert having a smaller diameter than that of the strainer.

A flush driving device for a toilet includes a mounting bracket, a control panel that includes a sensing window and manual buttons, and a manual operating mechanism that includes bars cooperating with the manual buttons and rotating mechanisms connected with the bars. Rotating shafts of the rotating mechanisms are mounted in the mounting bracket. An automatic operating mechanism includes a driving motor, a rod controlled by the driving motor, and lifting mechanisms cooperating with the rod. The flush driving device also includes pull arms connected to both the rotating mechanisms and the lifting mechanisms for controlling the flush of the toilet.

A system for flushing a vacuum toilet in an aircraft, with a bowl drain for removing toilet waste water from a bowl, a drain line, a bypass flow line for feeding-in air, a drainage valve and a waste water line. The bowl drain and the bypass flow line are connectable to the drain line, and the drainage valve on the input side is connectable to the drain line, and on the output side is connectable to a waste water line. In an implementation of the vacuum toilet as a vacuum urinal, the system may provide either water flushing or waterless flushing.

A clamping device for mounting a sink to a counter, includes a clamp having a clamp body and a binding tab, a binding post for insertion through a first opening in the clamp body and into a hole in a surface of the sink adjacent to a clamped article, the clamp and binding tab connected to the post and extending away therefrom at least partially over an edge of the clamped article, and a clamp screw for insertion through a second opening in the clamp body and against a solid portion of the binding tab interposed between the clamp screw and the edge of the clamped article.

A waste water insert has a wall surrounding a vertical bore. A horizontal flange extends outwardly from the upper end of the wall and has a lip formed on its outer periphery. The horizontal flange of the waste water insert is super-imposed over the horizontal flange of a waste water strainer located in a bathtub, sink or the like. The wall of the insert extends downwardly through the cylindrical wall of the waste water strainer with the two walls being spaced from each other by virtue of the cylindrical wall of the insert having a smaller diameter than that of the strainer.

The present invention is an air evacuation apparatus that prevents the accumulation of air inside a swimming pool or spa filter by allowing any air to be removed from inside the filter every time the swimming pool pump is turned on. By allowing air to be removed from the filter, the present invention prevents the build-up of dangerous levels of potential energy caused by compressed air inside the filter that can lead to the violent separation of the filter. More important, the air evacuation apparatus of the present invention allows air to be safely and automatically removed from inside of the filter without interfering with the functionality of the filter.

Methods and apparatus for controlling odors in an enclosed space, such as a pit latrine, include providing an oxidizer, such as a catalytic heater and an optional mechanical ventilation unit, such as an inline fan, both flow connected to a vault (pit) of the latrine. The heater is also connected to a source of fuel, for example, propane. Fresh air is drawn through vents in the latrine housing and thereafter through toilets in the latrine and through the vault, providing oxygen for the reaction. The fan and/or oxidation process draws both fresh air and accompanying odorous compounds directly from the latrine and into the oxidizer wherein the odorous components are substantially destroyed.

The device has a line arrangement (2), which possesses an inlet (3) connectable to a supply line and an outlet (4) connectable to a shower arm (5). A heating element (6) serves for the provision of warm water. An energy store (7, 8) is provided, with which the power range for the provision of shower water can be extended. The heating element (6) for the provision of warm water is, in particular, a continuous-flow heater. The energy store (7, 8) is, in particular, a thermal, electrical, electrochemical or chemical energy store. During the shower process, the energy store is available as an additional energy source for the preparation of shower water.

A lavatory pan device for separating stool and urine includes a stool and urine tray, a supporting device, and a moment force producing device. The stool and urine tray consists of a flat plate and the rib inclining upward and extending outward from the whole or partial edge of the flat plate. The lavatory pan has an opening or an entry way at the longitudinal side and is connected on the supporting device. Through the moment force produced by the prescribed moment force producing device, the stool and urine tray can roll over on the supporting device. The described moment force producing device is set on the stool and urine tray and it is between tow supports of the above supporting device and the opening or entry way.

A pool cover for above ground swimming pools includes a cover with an elevated central area, a plurality of rods to support the cover, and a plurality of clip assemblies to couple the rods to the swimming pool. The cover is a waterproof textile having a plurality of sleeve members allowing for insertion of the support rods to secure and support the cover. Each clip assembly includes hook which removably attaches to an upper perimeter edge of the pool and a pocket to receive an end of the support rod. When assembled, the support rods form a dome-like structure circularly arranged about the edge of the pool.

The invention provides a flush free drain trap system. The trap of the invention may be used in any trap system intended to block a back flow of odors from the waste line. A sealant liquid floats on top of the waste liquid in the trap to block odors. The trap uses one passageway to pass liquids to the sewer line, similarly to a conventional drain system, for preventing overflow and allowing cleaning. A second passageway allows the trap to dispose of small amounts of the waste liquid though an opening and a valve operated by the buoyancy caused by the accumulation of waste liquid in the trap. In normal use, waste liquid is passed to the sewer line without loss of sealant liquid. Furthermore, the performance of the trap is not affected by the evaporation of the waste liquid when the trap is unused.

A toilet training device includes an odor remediation system for absorbing or masking odors that may be created during toilet training. The odor remediation system may include a modular odor remediating insert that may be releasably positioned within a recess that is provided within the toilet training device. The odor remediating insert may include an odor absorbing substance such as sodium bicarbonate, an odor masking substance such as a fragrance or a combination of an odor absorbing substance and an odor masking substance. The toilet training device also includes a system for dispensing wipes that may utilize a recess that is defined in a side wall of the main body portion of the toilet training device. A wipes cartridge is designed so that it can be used to conveniently dispense wipes regardless of whether it is separated from the toilet training device or mounted within the recess of the toilet training device.

Provided is a pool spring cover having an elongate tubular member with openings on first and second sides, respectively. The first and second sides span a longitudinal axis. An attachment member extends generally along the longitudinal axis from a first portion of the second side to a free end. A fastener comprised of a first fastener element and a second fastener element is provided. The first fastener element is associated with the attachment member at the free end and the second fastener element is associated with the tubular member at a second portion of the second side. The first and second fastener elements are adapted to fasten to each other such that the attachment member forms a loop. The first fastener element and the second fastener element may form a one-time use fastener. Also provided are related systems and methods.

Provided is an automatic head care system and an automatic hair washing system for caring a person's head in a safe and effective manner without applying a straining force on the person's neck. In order to achieve the object, the following steps are performed in turn: a head receiving step in which a pair of arms 114L, 114R are placed at positions for receiving a person's head 10 on a suppotring body 112; a water washing step in which water ejected from a plurality of nozzles 110 is poured to the head 10 while the pair of arms 114L, 114R are swung; a shampoo step in which washing liquid ejected from the plurality of nozzles 110 is poured to the head 10 while the pair of arms 114L, 114R are swung; and a head care step in which the head 10 is cared by performing the push-rotating of the pair of arms 114L, 114R in the direction of approaching the head 10 so as to bring the plurality of contacts 109 into contact with the head 10 and by swinging the pair of arms 114L, 114R while moving the plurality of contacts 109.

An example bathing area surround includes panels having a slot flange and a hook flange. A hook-like projection on the hook flange of a first panel is extendable into a slot on the slot flange of a second panel. Another example bathing area surround includes the slot flange on a first bathing panel and the hook flange on a second bathing panel, and a seal located on at least one of the slot flange or the hook flange. The seal may comprise foam. The foam may be compressed.

A shower door assembly with an integral directional draining system including a shower door frame having a frame body defining a horizontal drain channel and a plurality of drain holes, at least one side panel having a first end and a second end, the first end of the side panel being sized and configured to be fixedly attached to the frame body and the second end of the side panel further including a hinge mount, and at least one door defining a hinge mount rotatably connected to the hinge mount of the side panel and a door drain channel, the door having an upper portion and lower portion. The door of the present invention flares upward and bows outward such that the upper portion of the door is farther away from the shower door frame than the lower portion of the door.

There are provided a valve control system, a bidet using the same, and a valve control method. The valve control system includes a latch valve controlling a stream of water in a pipe; a flow rate sensor measuring a flow rate in the pipe; and a valve control device controlling the operation of the latch valve. The valve control device determines whether or not the latch valve is malfunctioning upon analyzing a flow rate measured by the flow rate sensor. When the latch valve is malfunctioning, the valve control device controls the latch valve to re-operate.

Apparatus and method for automatically receiving and treating excreta. The apparatus for treating excreta according to the present invention includes: a port with an excreta-receiving portion for receiving the excreta of patients; an excreta storage unit which suctions and stores excreta from the excreta-receiving portion; an excreta suctioning unit which is connected to the excreta storage unit; a wash water supply unit which supplies wash water to the port, wherein the port has an air spray nozzle and an air intake port connected to an air intake line; and a flow channel switching unit, one side of which is selectively connected either to the excreta suctioning line or to the air intake line which are connected through the excreta storage unit, and the other side of which is connected to the excreta suctioning unit.

A sink covering assembly for selectively concealing the contents of a sink includes a screen with a peripheral edge. A plurality of suction cups is coupled to the screen adjacent to the peripheral edge of the screen. Each of the suction cups is configured for engaging a surface adjacent to a sink whereby the screen extends over and covers the sink.

A tap mounting (11) for mounting a tap to a plumbing fixture (66), the plumbing fixture having a surface with an aperture (64). The tap mounting (11) comprises an over-surface mounting part (12), an under-surface mounting part (13) defining a threaded aperture (58), a threaded elongate member (40) and a second elongate member (28). In use the over-surface mounting part is above the surface of the plumbing fixture, the under-surface mounting part is below the surface of the plumbing fixture. The elongate members extend from the over-surface mounting part through the plumbing fixture aperture and the threaded elongate member passes through the threaded aperture of the under-surface mounting part. Rotation of the under-surface mounting part is prevented by the second elongate member. The threaded elongate member comprises an internal bore and is configured for connection to a hose. On installation of the tap mounting, the under-surface mounting part is arranged to be passed through the plumbing fixture aperture substantially without deformation, and the tap mounting is configured to enable it to be secured to the plumbing fixture by manipulation of the tap mounting substantially wholly at or above the surface of the plumbing fixture.

A waste collection unit includes a motor supported by a housing. A fan is coupled to the motor by a first member configured to provide a rotational input speed. A liquid-gas separator is coupled to a second member configured to provide a rotational output speed. A speed reduction device is coupled to the first and second members. The speed reduction device is configured to provide a rotational output speed that is less than the rotational input speed. In another embodiment, the fan is arranged in the housing and is directly coupled to the motor by the first member. The fan includes first and second sides respectively including first and second pumping elements. A first waste collection line fluidly connects a urinal to the first side. A second waste collection line fluidly connects a fecal storage container to the second side.

A swimming pool with a circulating water flow includes a plurality of side walls adjacent a swimming compartment, one of the side walls including an outlet, at least one inlet positioned at each lateral side of the outlet, and a plenum arrangement on a side of the one wall opposite the swimming compartment. The plenum arrangement is in communication with each inlet and the outlet. A water propulsion device is positioned within the plenum arrangement and effects a pair of circuitous water flow paths within the swimming compartment.

A shower curtain is provided with two pockets adapted to receive spaced apart stereo speakers and a third pocket adapted to receive a personal entertainment system. The third pocket is provided with a clear inside window pane facing the inside of the shower and adapted for finger-touch control through the window pane. A closure system integral with the shower curtain is provided for external access to the pockets. In one embodiment, the closure system for access to the pockets is a tongue-in-groove fastening arrangement that provides external access to a personal entertainment system as well as a channel through which wires run to couple the entertainment system to the speakers.

This integrally formed water and space saving lavatory-toilet fixture enables hand washing with potable water from an existing toilet, recycles effluent completely, and provides sanitary, seamless, one-piece, full perimeter tank closure. A flexible hose re-directs supply away from the overflow through an interior fixture cavity and top cast opening toward a basin, that drains back into the reservoir as effluent; supplementing the required volume of water to complete one flush cycle. A cast sidewall basin opening is formed allowing potential drainage to flow through an internal hollow cavity directly into the tank reservoir below. The integrally formed fixture also includes a sloped front wall allowing additional hand washing space, vertically aligned space saving side and rear walls, and, an integrally formed perimeter rim conforming to the shape of the toilet tank edging below, providing hygienic, continuous tank containment and secure, detachable mounting.

In an apparatus for controlling an unmanned autonomous operating vehicle having an electric motor supplied with power from a battery for operating an operating machine, and magnetic sensors for detecting intensity of a magnetic field of an area wire and controlled to run about in an operating area defined by the area wire through wheels driven by the prime movers to perform an operation using the operating machine and to return to a charging device installed on the area wire so as to charge the battery, there is provided with a turn-back portion formed by bending the area wire at an appropriate position and again bending the area wire to return in a same direction with a predetermined space so as to divide the operating area into a plurality of parts and vehicle running is controlled to be prohibited from going across the turn-back portion.

A combination tractor and baler is provided to automate tractor stopping and baler wrapping while incorporating operator interaction to improve the efficiency of the tractor and baler combination in operation. Automated control systems and manual operator devices are utilized to improve the timing of the tractor stop and baler wrapping time sequences. Various methods to improve efficiency, including methods to synchronize tractor stop with wrapping activation are provided.

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.

A bale turning apparatus for attachment to a baler to generally align the cylindrical of the bales in each row as the bales are released from the baler. Using the disclosed invention, the bales are essentially turned ninety degrees from the orientation of bales from the position that they are typically released from a round baler. By accomplishing this general alignment of the cylindrical axis of each bale in each row, when baling corn stover or other row crops, the bale loading operation can later be done more efficiently by driving down the rows in the same direction as the combine and baler have traveled.

An agricultural work vehicle includes a vehicle body having longitudinally extending sides. An enclosed engine compartment is configured within the vehicle body. An air inlet is defined in side of the vehicle body for intake of air into the engine compartment. A grain bin forward of the engine compartment includes a grain bin extension skirt mounted above the grain bin. An intake housing is mounted over the air inlet in the vehicle body side and includes a forwardly extending portion mounted alongside the grain bin extension with an inlet opening oriented so as draw air primarily from an area forward of the engine compartment and above the vehicle body.

A harvesting system and method providing a row insensitive plant cutting and gathering capability, suitable for harvesting tall, stalky plants such as sweet sorghum, cane, and the like, in high volume, which also billet cuts the harvested plants. Multiple plants are cut simultaneously on a continuous basis at any locations across a header of the system, and the cut plants are gathered into a continuous overlapping flow having a vertical extent or thickness of several stalks or canes and their associated foliage. The flow is then vertically compacted into a mat of reduced thickness while being conveyed into a billet cutter, which cuts the stalks or canes into billets of a desired length and discharges the billets to a desired location, all while the harvester is moving through a field harvesting. The system can be incorporated into a conventional sugarcane harvester in place of conventional base cutters and row dividers.

A harvesting header includes a cutter bed having a plurality of cutting elements arranged transverse to the header and a crop chopping and conditioning region having a crop chopping device and a crop conditioning device. The crop chopping device is configured to chop crop cut by the cutter bed into smaller lengths and the crop conditioning device is configured to crimp the crop to aid in drying. The first chopping roller has a tubular, cylindrically-shaped body and a plurality of parallel knife-mounting lugs extending radially outward along substantially the full length of the body. A plurality of chopping knives are attached to the knife-mounting lugs and arranged around the body, each chopping knife having a length that is shorter than the length of the knife-mounting lug to which it is attached such that each chopping knife covers only a portion of the lateral length of the first chopping roller.