Abstract: The present disclosure provides for a surgical instrument which includes a housing and an endoscopic portion extending distally from the housing and defining a first longitudinal axis. The surgical instrument also includes an end effector disposed adjacent a distal portion of the endoscopic portion. The end effector includes an anvil assembly and a cartridge assembly. The anvil assembly is pivotally coupled to the cartridge assembly to be movable from a first actuation position to at least one other second actuation position. The surgical instrument further includes a firing rod having a shaft defining a second longitudinal axis, the shaft having a cam member which is in mechanical cooperation with the anvil assembly and is configured to move the anvil assembly from the first actuation position to the at least one other second actuation position upon rotation of the firing rod about the second longitudinal axis.

Abstract: A tool assembly for a surgical stapling device includes a channel member for supporting a staple cartridge therein and an anvil to deform a plurality of staples ejected from the staple cartridge thereagainst. The tool assembly also includes a sled which is movable to force the staples from the cartridge against the anvil to staple tissue disposed between the anvil and the staple cartridge. A dynamic clamping member is included which has a pin which movably engages the anvil and a flange which movably engages the channel assembly. The dynamic clamping member is mounted to and movable with the sled. The pin and the flange of the dynamic clamping member cooperating to oppose the forces associated with clamping and stapling tissue and also to maintain a substantially uniform gap between the anvil and the staple cartridge during stapling of the tissue.

Abstract: A surgical stapling apparatus including a handle assembly, an elongated shaft extending distally from the handle assembly, a shell assembly containing a plurality of staples arranged in an annular array, and a firing mechanism for advancing staples from the shell assembly. An anvil assembly including a tiltable anvil head movable from an aligned operative position to a tilted position. A camera assembly is operatively coupled to a distal surface of the tiltable anvil head such that an orientation of the camera assembly changes as the anvil head moves from the operative to the tilted position.

Abstract: There is provided a tool for friction stir welding, in which a coating layer is less likely to peel off from a base material and excellent wear resistance is achieved. The tool for friction stir welding according to the present invention includes a base material (BM) and a coating layer. The BM includes a first hard phase (FP) formed by WC particles, a second hard phase (SP) and a binder phase (BP). The SP is formed by a compound of one or more metals selected from Ti, Zr, Hf, Nb, Ta, Cr, Mo, and W and one or more elements selected from nitrogen, carbon, boron, and oxygen, and is included in the BM at a volume ratio of 3% to 30%. The BP is included in the BM at a volume ratio of 8% to 28%. The FP is higher than the SP in terms of volume ratio.

Abstract: The metal bonding apparatus comprises: a solution supply unit configured to supply a solution which is able to elute an oxide with copper oxide as a principal component, to at least one of a first bonding portion and a second bonding portion; a pressing unit configured to apply pressure to the first bonding portion and the second bonding portion so as to sandwich the solution between the first bonding portion and the second bonding portion, and in a direction in which a distance between the first bonding portion and the second bonding portion is reduced; and a heating unit configured to heat the first bonding portion and the second bonding portion, wherein the first bonding portion and the second bonding portion are bonded by the pressure applied by the pressing unit and the heat from the heating unit.

Abstract: A method and apparatus for managing the delivery of component parts and tooling to a robotic welding assembly positioned on a motor vehicle body assembly line. Automatic guided vehicles deliver component parts from a source of parts to a parts staging area on the robotic welding assembly including a substage awaiting area, a substage in-use area and a substage empty area, and further automatic guided vehicles deliver tooling from a tooling management area to the robotic welding assembly whereafter the tooling, upon model changeover, is moved to a tooling use area proximate the assembly line whereafter, upon further model changeover, the tooling is removed from the tooling use area and loaded onto an automatic guided vehicle for return to the tooling management area.

Abstract: In one implementation, a system in package assembly process includes attaching a cladding to a substrate to keep the substrate flat while components are soldered onto the substrate. The cladding may include a supporting member and a clamping member, and the substrate may be received between the clamping member and the supporting member. The clamping member may have a plurality of openings formed therein, and the components may be positioned on the substrate within at least one of the plurality of openings. A predetermined pressure may be applied to the clamping member and/or supporting to keep the substrate flat.

Abstract: A container is disclosed. The container may include a fillable bladder in an interior of an enclosure of the container. The container may be used for packaging a pourable product into a fillable bladder while the fillable bladder is positioned inside the container. The container may include an enclosure having a blind depth recess bottom handle. The container may include an enclosure having a bottom flap having a flap perimeter which generally matches a lower perimeter of a plurality of sides of the enclosure.

Abstract: A carton for foodstuff, in particular for pizzas or similar foodstuffs, comprises a bottom part (2) and a lid part (3). Each of these parts (2, 3) has a front wall (4, 5) and two side walls (6, 7, 8). Bottom part (2) and lid part (3) are joined together pivotally by a rear wall (10) so that these parts (2, 3) are pivotable for opening and closing the carton (1). To stack cartons stably on top of one another in a simple manner and to prevent jamming of cartons arranged one above the other, at least one front wall (4, 5) of the bottom part (2) or lid part (3) runs obliquely outwards corresponding to a free end edge (11, 12) of the at least one front wall (4, 5).

Abstract: A method for manufacturing a hinged lid paper covered rigid box which can be 5 knocked down, the method comprising covering a rigid board blank with paper, whereby the blank comprises a first sidewall, a second sidewall, a third sidewall and a fourth sidewall, the first sidewall being hingedly connected to the second sidewall, the second sidewall being hingedly connected to the third sidewall, the third sidewall being hingedly connected to the fourth sidewall and 10 the fourth sidewall being hingedly connected to the first sidewall, whereby the sidewalls can be in a knock down state and the method further comprising erecting the box in which the sidewalls are moved to an erect state by a parallelogram movement.

Abstract: Methods, systems, apparatuses, and computer program products are provided for arranging for shipping a package without the customer needing to generate or apply a shipping label, or any other information, to the package. In one embodiment, a system may comprise a carrier server and a carrier device. The carrier server may receive and store a smart code and shipping information associated with the package, which it may link together. The carrier device may capture the smart code from the package and send a request, including the smart code, to the carrier server for related shipping information. The carrier server may receive the request from the carrier device, retrieve the shipping information based on the smart code, and send the shipping information to the carrier device. The carrier device may receive the shipping information and generate a shipping label for the package based on the shipping information.

Abstract: A mobile communication terminal can comprise a housing, a microprocessor disposed within the housing, a display incorporated into the housing, and a communication interface communicatively coupled to the microprocessor. The mobile communication terminal can be configured, responsive to receiving a byte sequence representing a character string containing one or more alphanumeric or non-alphanumeric characters, to encode the byte sequence into one or more bar code symbols having a minimum dimension of a smallest element equaling or exceeding a readability threshold value. The mobile communication terminal can be further configured to display the bar code symbols.

Abstract: A display unit comprising a plurality of display modules arranged in a row and having an upper display section and a lower display section. One of the display modules includes an interactive Kiosk, and a second of the display modules includes at least one computer controlled card reading video station. A consumer may pass a coded paint color sample card past a code reader in the video station and is thereafter presented with a display of a color present on the sample card followed by a selectable sequence of video display screens, which may comprise part of a color selection application program.

Abstract: Systems and methods for identifying, tracking, tracing and determining the authenticity of a good are described herein. In some embodiments, a system includes an imaging system, a database, and an authentication center. The imaging system is configured to capture an image of a unique signature associated with a good at the good's origin. The unique signature can be, for example, a random structure or pattern unique to the particular good. The imaging system is configured to process the image of the good to identify at least one metric that distinguishes the unique signature from unique signatures of other goods. The database is configured to receive information related to the good and its unique signature from the imaging system; and is configured to store the information therein.

Abstract: A portable asset tagging system, process and computer writeable medium including at least one tag exhibiting a QR code along with a separate unique identification number printed thereon, the tag also identifying a site address accessibly by a member user and associated with the system. A software program is incorporated into a processor integrated device used to access the site address and exhibiting a visual display and includes user enterable fields for creating a member profile and for identifying and pairing the asset to the tag in order to establish ownership with information derived from the member profile. Upon the item being lost and subsequently found, the finder entering the unique identification number or scanning the QR code in order to uncover at least one additional data field which draws information from the member entered fields in order to facilitate return of the lost item.

Abstract: A system for incentivizing purchases by consumers comprises a kiosk configured to appraise an item. A composition of the item is determined using an evaluating device. A cash value is associated with the item using data obtained by the evaluating device and market data obtained over a network, and an exchange value of the item is determined by subtracting a processing fee from the cash value. At least one of the cash value and the exchange value is relayed to the consumer on an output device. The consumer is asked to select via an input device between at least a first offer and a second offer in exchange for the item. A kiosk or mall booth for buying and receiving credit transaction cards, debit transaction cards, gift transaction cards, or coupons is also disclosed.

Abstract: Disclosed is an automated purchasing system that utilizes wireless purchaser identifier weight sensing shelves that wirelessly communicate with a store server. Purchasers can utilize a wireless identifier that may comprise an RFID or NFC device, such as a smart phone or tablet computer, which is placed in front of the weight sensing shelf and identifies the purchaser. The purchaser can then remove products from the shelves and the store server keeps track of the items removed. The automated purchasing system eliminates the costly and time consuming checkout process in various stores, such as grocery stores, department stores, hardware stores and other similar stores. Locked compartments and access portals can also be accessed. Also disclosed is a weight measuring hanger that comprises a hanger rod. The hanger rod employs a weight sensor that is sufficiently sensitive to detect the removal or addition of a product from the hanger rod.

Abstract: A system for authenticating an optical pattern created by exposing a magnetically sensitive material to one or more magnetic field sources. The system includes illumination sources configured to illuminate the optical pattern, sensors configured to generate sensed optical characteristic data when the optical pattern is illuminated, a memory configured to store a reference optical data associated with a reference optical pattern, and a processor configured to access the memory and compare the reference optical data to the sensed optical characteristic data in order to authenticate the optical pattern.

Abstract: An illumination apparatus (10) for the generation of an illuminated region for a camera-based code reader (100) is provided which comprises at least one light transmitter (12), an optical transmission system (14), a holder (24) for the optical transmission system (14) and a setting device (28), by means of which the holder (24) can be moved whereby the illuminated region can be focused at a working distance and/or be adapted in its dimensions. In this connection the holder (24) is fixed at at least one point of fixation (26) so that the holder (24) is moved relative to the light transmitter (12) in a compulsory guided manner on actuation of the setting device (28), however, maintains its relative position with respect to the light transmitter (12) at the point of fixation.

Abstract: An apparatus includes a diffusive plate that is substantially perpendicular to the optical axis of an imaging lens arrangement and covers a side face of a solid rectangular defining a volume space within which parts of a scan engine are deposited. The parts of the scan engine including at least the illumination light source, the imaging lens arrangement, an imaging sensor, and a controller for controlling both the illumination light source and the imaging sensor. The diffusive plate includes a first opening to allow light enter the imaging lens arrangement through the first opening. The area enclosed by the boundary of the diffusive plate substantially equal to the area of the side face of the solid rectangular.

Abstract: An electronic storage system includes a substrate and a transceiver. The transceiver includes an interface that receives a downlink signal; an output electrical-connection pad; an excitation circuit adapted to provide an excitation signal to the output pad; at least one input electrical-connection pad; and a detection circuit connected to the input pad. A code circuit separate from the transceiver is disposed over the substrate. The code circuit electrically connects the output pad to the input pad, so that the detection circuit detects an electrical state of the input pad in response to the excitation signal. The interface transmits an uplink signal representing the electrical state response to the received downlink signal.

Abstract: An electronic storage system includes a substrate with an alteration region. A transceiver includes an interface, an output electrical-connection pad, an excitation circuit that provides an excitation signal to the output pad, an input electrical-connection pad, and a detection circuit connected to the input pad. A code circuit separate from the transceiver is disposed over the substrate, and includes a conductor disposed over the substrate in the alteration region, the conductor having a mechanical state. The code circuit electrically connects the output pad to the input pad, so that the detection circuit detects an electrical state of the input pad in response to the excitation signal and the mechanical state of the conductor. The interface is responsive to a downlink signal to transmit an uplink signal representing the electrical state of the input pad. The conductor in the alteration region is adapted to permit external alteration of its mechanical state.

Abstract: An electronic storage system includes a substrate with a detection region, a transceiver having an interface, and a code circuit separate from the transceiver and disposed over the substrate. The transceiver has an output electrical-connection pad, an excitation circuit that provides an excitation signal to the output pad, an input electrical-connection pad, and a detection circuit connected to the input pad. The code circuit connects the output pad to the input pad and includes a conductor having an electrical state and located in the detection region. The detection circuit thus detects an electrical state of the input pad in response to the excitation signal and the electrical state of the conductor. The interface is responsive to a downlink signal to transmit an uplink signal representing the electrical state of the input pad. The conductor in the detection region is adapted to change electrical state in response to an environmental factor.

Abstract: A method of altering an electronic storage system includes receiving the system including a substrate with an alteration region. The system also includes a code circuit disposed over the substrate and a transceiver. The code circuit includes a conductor disposed over the substrate at least partly in the alteration region, the conductor having a mechanical state and being adapted to permit external alteration of the mechanical state. The transceiver detects an electrical state corresponding to the mechanical state of the conductor, and, in response to a downlink signal, transmits an uplink signal representing the electrical state. After the system is received, the mechanical state of the conductor in the alteration region is altered.

Abstract: A radio frequency identification rivet at least includes a rivet consisting of two or more interlocking devices, or a single locking device, with a radio frequency identification system installed in the rivet. So any object jointed with the rivet can not only be identified with radio frequency, but also attain anti-theft and anti-counterfeit purposes, unless the rivet is forcefully damaged taken off the object.

Abstract: An embedded electronic device and a method for manufacturing the same wherein the embedded electronic device is composed of a printed circuit board, having a top surface and a bottom surface, a plurality of circuit components attached to the top surface of the printed circuit board having a plurality of standoffs on the bottom surface of the printed circuit board, a bottom overlay attached to the bottom surface of the printed circuit board, a top overlay positioned above the top surface of the printed circuit board and a core layer positioned between the top surface of the printed circuit board and the top overlay.

Abstract: To provide a wireless identification semiconductor device provided with a display function, which is capable of effectively utilizing electric power supplied by an electromagnetic wave. The following are included: an antenna; a power source generating circuit electrically connected to the antenna; an IC chip circuit and a display element electrically connected to the power source generating circuit; a first TFT provided in the power source generating circuit; a second TFT provided in the IC chip circuit; a third TFT provided in the display element; an insulating film provided to cover the first to third TFTs; a first source electrode and a first drain electrode, a second source electrode and a second drain electrode, and a third source electrode and a third drain electrode which are formed over the insulating film; and a pixel electrode electrically connected to the third source electrode or the third drain electrode.

Abstract: A mobile heating system is disclosed. In one embodiment, the system includes an enclosure defining a plenum that houses a fan and an internal combustion engine. The heating system also includes a hydraulic circuit including a hydraulic pump operably coupled to the internal combustion engine and a first heat exchanger located in the plenum and in fluid communication with the hydraulic pump. The hydraulic circuit also includes a hydraulic motor operably coupled to the fan wherein the hydraulic motor is in fluid communication with and driven by the hydraulic pump. A first valve is disposed between the hydraulic pump and the heat exchanger and is configured to restrict fluid flow and to increase a fluid pumping pressure of the hydraulic pump. A second valve is located upstream of the first valve and is configured to selectively direct hydraulic fluid between the first valve and the hydraulic motor.

Abstract: A method of controlling a heating system includes: obtaining, from a power supply source, information specifying an output modulation period during which power consumption by a heat pump unit is to be reduced; and controlling, based on the information obtained in the obtaining, an amount of heat generated by the heat pump unit. In the controlling, the heat pump unit is caused to generate a first amount of heat per unit time in a period other than the output modulation period, and generate a second amount of heat per unit time during the output modulation period, the second amount of heat being less than the first amount of heat.

Abstract: Disclosed is a guide plate for the lateral guidance of a rail and to a rail fastening system with such a guide plate. The guide plate has a contact area, on which the guide plate stands in the completely assembled state, and a support portion, which is associated with the counter bearing, with a support face, with which the guide plate 1 is supported, in the completely assembled state, on a counter bearing.

Abstract: A combination of a guiding plate for laterally supporting a rail and a wedge element for adjusting the position of the rail relative to a counter-bearing, on which the guiding plate is supported. The guiding plate has an end face which is associated with the wedge element and which extends in the longitudinal direction and a lower side associated with a substrate. Between the guiding plate and the wedge element is a positive-locking guide along which the wedge element can be displaced in the longitudinal direction of the end face of the guiding plate. The guide between the wedge element may act as one joining partner and the guiding plate may act as another joining partner wherein, in one of the joining partners, there is formed a slot-like guide orientated along this joining partner and the projection of the other joining partner engages in a positive-locking manner.

Abstract: The invention is directed to the application of EMR to one or more elements for the purpose of generating a scent response in humans. Electronic scents may be transmitted on a stand-alone basis, unaccompanied by other sensory stimulus, or as part of a multisensory experience. Examples of multisensory experiences include theatrical motion pictures, television programming, sound recordings, or e-books accompanied by one or more scents. These scents may be coordinated with content elements, such as the scent of horses accompanying the motion picture “High Noon,” the scents of beer and leather accompanying a sound recording of “When You're a Jet” from “West Side Story,” or the musty scent of a cellar in an e-book version of Poe's “The Cask of Amontillado.

Abstract: A thrust reverser assembly and operation suitable for high-bypass turbofan engines. The thrust reverser assembly includes a translating cowl mounted to a nacelle of an engine and adapted to translate in an aft direction of the engine. The translating cowl has a radially inner wall that defines a radially outer flow surface of a bypass duct of the engine. The thrust reverser assembly includes blocker doors axially guided adjacent first ends thereof by a fixed structure and pivotally and slidably connected along lengths thereof to the inner wall of the translating cowl so that translation of the translating cowl in the aft direction causes each blocker door to move from a stowed position to a deployed position as a result of the blocker door sliding at its first end relative to the fixed structure and sliding along its length relative to the inner wall of the translating cowl.

Abstract: A pat-switching sprinkler has a fixation unit, an operation bat and switching mechanism. The fixation unit is disposed with a water entry and multiple water exits which can get through with the water entry. The operation bat is disposed with an operation part, a connection part and a pin-jointed part, which pivots the fixation unit. The connection part and the operation part respectively lie at the inner side and external side of the fixation unit. The switching mechanism is arranged in the fixation unit and is in transmission with the connection part.

Abstract: A topical spray composition and a system for containing and applying the composition is described. The composition has liquid emulsifiers that unexpectedly result in a superior product suitable to be applied homogeneously.

Abstract: A fuel nozzle includes a center body and a shroud circumferentially surrounding at least a portion of the center body to define an annular passage between the center body and the shroud. A plurality of vanes extend radially between the center body and the shroud in the annular passage. A first ceramic extension extends downstream from the shroud to define at least a portion of the annular passage downstream from the shroud.

Abstract: A sprayer nozzle apparatus of an agricultural sprayer is disclosed. The sprayer nozzle apparatus is adapted for receiving a fluid from a spray line of an agricultural sprayer. The sprayer nozzle apparatus includes an apparatus housing. A control element is rotatably coupled to the apparatus housing. A plurality of nozzle connectors having a plurality of supply paths are coupled to the apparatus housing. The control element is configured to receive fluid from the spray line and selectively communicate fluid to at least one of the plurality of supply paths of one of the plurality of nozzle connectors in a first position and to at least one of the plurality of supply paths of another of the plurality of nozzle connectors in a second position.

Abstract: A sprayer nozzle cartridge for a sprayer nozzle apparatus of an agricultural sprayer is disclosed. The sprayer nozzle cartridge is adapted for coupling to a nozzle connector of the sprayer nozzle apparatus and for receiving a fluid from the sprayer nozzle apparatus. The sprayer nozzle apparatus includes an apparatus housing for supporting the nozzle connector and a control element configured to control fluid flow. The sprayer nozzle cartridge includes a cartridge housing. A plurality of nozzle tips having a plurality of flow paths are coupled to the cartridge housing. The control element selectively communicates fluid to at least one of the plurality of flow paths.

Abstract: A device for injecting fuel includes an outwardly opening valve needle, a piezo actuator connected to the valve needle, a valve body having a first through-opening, and a holding body connected to the valve body and having a second through-opening. The valve body has a valve seat and a first guide region for guiding the valve needle, the valve needle being disposed in the valve body and in the holding body, and the first through-opening is formed in the valve body without undercutting.

Abstract: Provided is an injection nozzle which is capable of maintain high response performance over a long period of time, in a manner compatible with an increase in fuel injection pressure of a high-pressure common rail system which is one type of fuel injection system for internal combustion engines such as diesel engines. The injection nozzle comprises a valve body 1, and a needle valve 2 disposed in an inner bore of the valve body 1 and adapted to intermittently seal an injection port 11 of the nozzle body 1, wherein at least a distal end 22 of the needle valve 2 is made of a metallic glass.

Abstract: A conduit with a terminal end, wherein proximate to the terminal end is an orifice plate, wherein the orifice plate has at least one orifice with at least one perimeter, and the at least one perimeter is in a fractal pattern, wherein the conduit can be a nozzle assembly for a flow, wherein examples of a nozzle assembly include a fuel injector, a shower head, a faucet head, and a nozzle head, wherein proximate to the terminal end of each nozzle is the orifice plate with a fractal pattern that provides a downstream spray pattern.

Abstract: A portable hand-held device for spreading particulate matter such as rock salt or seed. The device includes a bucket-like body of one or two piece construction with apertures positioned at specific locations so as to control the flow and distribution of salt or seed during operation. The device incorporates an inset disk which further increases the efficiency of the device.

Abstract: The hitch bar with swivel has a proximal portion that attaches removably to the conventional receiver hitch receptacle of a supporting vehicle and a distal portion for supporting an apparatus, e.g., spreader for distributing animal feed, etc., thereon. The distal bar portion is positioned to overlay the proximal portion and to place the supported apparatus close to the rear of the supporting vehicle during operations in order to reduce the lever arm and corresponding bending loads on the hitch receptacle. The distal portion of the bar may be swiveled clear of the rear of the vehicle to allow the rear door (tailgate, rear hatch, etc.) of the vehicle to be opened when the vehicle is stopped. The distal bar portion and apparatus supported thereon have a combined length preferably less than half the width of the vehicle, permitting the bar to be swiveled freely without extending laterally beyond the vehicle.

Abstract: A coating device comprises at least one application apparatus to discharge a coating agent from at least one coating agent nozzle. The application apparatus is configured to apply an oscillation to at least one of the coating agent and at least one coating agent jet such that at least one of the coating agent and the at least one coating agent jet break up into droplets.

Abstract: A compact modular mobile aggregate processing system configured with no stand-alone inter-plant conveyors for decreasing the footprint of the system and an infinitely adjustable flow diverter(s) for increasing the control of and variation of output characteristics of the system; the system further including specialized folding conveyors.

Abstract: The object of the invention is a cutting group for a mincing unit of a mincing machine of industrial type, with a characteristic knife holder (16), wherein said knife holder has long knives (12) and short knives (121) arranged alternately.

Abstract: A paper shredder includes a housing, cutters positioned in the housing, and a feeder base adapted to support a stack of paper. The feeder base includes a feeder slot. A pressure plate is mounted for movement above the feeder base. The pressure plate is mounted to a bottom surface of a feeder door that substantially covers the entire feeder base and is pivoted about an axis at one end of the feeder door. The pressure plate is a one-piece member that spans the feeder slot.

Abstract: A portable grinder unit includes a plurality of grinder heads for rending waste debris. A pair of side grapple arms are independently movable between a receive position and a feed position. A top grapple arm is movable between a receive position and a feed position. The grinder unit is mountable to a support vehicle and can receive mechanical power from the support vehicle.

Abstract: A mechano-chemical reactor comprising, driving means extended along one or more parallel axis, a mass made oscillating by the driving means along the direction of a vertical axis and an elastic system for a partial compensation of the inertial forces generated by the oscillating mass. The oscillating mass includes at least one restricted environment loaded with solid and/or liquid substances are loaded in order to be treated by the kinetic energy of milling bodies. The elastic system comprises flexible elements made of a titanium alloy which are either one-dimensional, i.e. a plurality of rectilinear parallel rods, or bi-dimensional, i.e. at least a polygonal plate having two sides parallel to the axis of the driving means. In rest conditions the flexible elements are extended substantially perpendicular to the direction of the oscillations of the mass.

Abstract: The mill includes a milling chamber (1) containing a rotor (2) provided with hammers (4), and at least one impact screen mounted pivotably with the aid of an adjusting jack in order to move the bottom end of the screen toward or away from the rotor so as to define, between the bottom end of the screen and the free end of the hammers, a spacing which determines a given particle size. The mill includes a device for positioning the rotor that includes indexing elements for positioning the end of one of the hammers as close as possible to the screen for adjusting the spacing. It includes a geared motor driving a pinion capable of engaging with a toothed wheel fixed in rotation to the rotor so as to rotate it from a rest state until one of the hammers is as close as possible to the screen.