Abstract: A process for cutting a fiberglass panel comprises cutting the fiberglass panel with a liquid jet containing a sealant which coats and adheres to the cut edge of the panel, and thereafter curing the sealant to harden and encapsulate the edge of the panel to reduce the emanation of fiberglass dust particles therefrom.

Abstract: This invention relates to apparatus and methods for collision detection and recovery for waterjet and abrasive-jet cutting systems. In one embodiment, an apparatus includes a first mount member coupleable to a controllably positionable mounting portion of the cutting system, and a second mount member coupleable to the cutting head and disengageably or movably coupled to the first mount member. Embodiments of the inventions may also have a sensing circuit having at least one first conductive element disposed on the first mount member and at least one second conductive element disposed on the second mount member. In the event of a collision between the cutting head and an obstruction, the second mount member disengages from or moves with respect to the first mount member to prevent breakage of the cutting head. This movement causes the first and second conductive elements to touch, signaling a collision and shutting down one or more internal systems.

Abstract: A cleaving tool provides pressurized gas to the edge of a substrate in combination with a sharpened edge to cleave the substrate at a selected interface. The edge of the tool is tapped against the perimeter of a substrate, such as a bonded substrate, and a burst of gas pressure is then applied at approximately the point of contact with the edge of the tool. The combination of mechanical force and gas pressure separates the substrate into two halves at a selected interface, such as a weakened layer in a donor wafer.

Abstract: An ultrasonic vibration cutting method comprising mounting and fixing a part to be cut on a mounting table, moving down an ultrasonic vibration rotation unit, stopping the downward movement of the ultrasonic vibration rotation unit when the cutting blade of the ultrasonic vibration rotation unit reaches a position for cutting the part, moving the ultrasonic vibration rotation unit linearly for cutting, and turning and vibrating the cutting blade with ultrasonic waves to cut the part.

Abstract: A system for generating a high pressure fluid jet includes a variable pressure pump and a burst resistant delivery tube which safely conducts the pressurized stream to an instrument. The pump may include a disposable diaphragm pump cartridge which is driven by a reusable pump. The delivery tube may be a coiled hypo tube which enhances flexibility.

Abstract: A cutting apparatus cuts a rolled dough product. The apparatus includes a conveyor conveying a rolled dough cylinder along a dough travel path. A nozzle is coupled to a liquid source providing liquid under pressure and is directed toward the dough travel path. The nozzle is offset from a surface of the dough cylinder by an offset distance sufficient so the cutter can cut a portion from the dough cylinder and provide sufficient separation between the cut portion and the dough cylinder so the cut portion does not stick to the dough cylinder.

Abstract: An ultra high pressure waterjet cutting system which includes a valve for selectively delivering either a stream of ultra-high pressure water or alternatively, a moderately reduced but yet sufficiently high pressure to initiate cutting. The arrangement provides a convenient means for initiating cuts along the edges of workpieces and is particularly useful when encountering surfaces of brittle workpieces.

Abstract: A system for generating a high pressure fluid jet includes a variable pressure pump and a burst resistant delivery tube which safely conducts the pressurized stream to an instrument. The pump includes a disposable diaphragm pump cartridge which is driven by a reusable pump. The delivery tube may be a coiled hypo tube which enhances flexibility.

Abstract: A paper-making machine for making a fiber web, includes a wire for carrying the fiber web. A trim squirt includes a nozzle cutter and an accumulator tank. The nozzle cutter is directed toward and transverse to the wire. The accumulator tank includes an inlet for receiving a pressurized fluid and an outlet fluidly connected with the nozzle cutter. The tank is structured and arranged to define an air attenuation pad therein.

Abstract: A fluid jet cutting system structured to make desired quality cuts in a solid material such as stone, granite, steel and/or marble, the system having a positioning assembly which positions the solid material in a cuttable orientation over a fluid reservoir and at least one fluid jet generator which directs a concentrated, high pressure stream of fluid through a nozzle at the solid material such that the solid material is cut by the high pressure stream of fluid. The fluid jet generator further includes a guidance system which passes the nozzle over the solid material in a predetermined cutting path and at a predetermined movement rate such that the high pressure stream of fluid engages and cuts through the solid material in accordance with the cutting path.

Abstract: A water jet cutting apparatus for use in a papermaking machine has an elongated support beam that extends across the width of the web. The water jet cutting apparatus utilizes a free spinning hose wheel about which the water jet hose supplying water to a water jet nozzle is guided and stretched. The wheel is mounted for movement with a slower moving carriage along the beam adjacent a faster moving carriage carrying the water jet nozzle. The slower moving carriage moves along the beam at speeds which are one half the speeds at which the faster moving carriage moves across the beam. During this movement of the second slower moving carriage, the wheel reels the hose thereabout to provide a travelling intermediate support for the hose. The hose wheel supports the weight of the hose and maintains it in alignment with the faster moving carriage so that less strain and stress is placed on the hose and the ends of the hose connected to the water jet nozzle during movement of the water jet nozzle across the beam.

Abstract: A waterjet head is resiliently supported at one location along its axis and is pivotally supported at another, axially spaced location. The head is driven in a pivoting, oscillating manner by a drive system including a rotary motor and an eccentric. The outlet nozzle of the waterjet head pivots in an orbital path so that the UHP liquid or liquid/abrasive stream discharged from the nozzle describes an orbital path on an adjacent workpiece surface, enabling the stream to carry out a uniform surface treatment operation such as cleaning, polishing or milling without damaging the workpiece surface.

Abstract: Multiple head cutting unit, especially suitable for machines utilized to cut leather, skin and synthetic materials with a water jet, including at least a carriage (16), movable along several axes with respect to an underlying work table (14) and a cutting unit supported by carriage (16) and including a nozzle for the outlet of pressurized water, wherein the cutting unit supported by carriage (16) includes at least two cutting heads (26, 36, 38), and at least one of said cutting heads is movable with respect to the other one or ones along a horizontal plane parallel to the work table (14).

Abstract: A fibrous work piece, e.g. a glass fiber mat or blanket, is simultaneously cut, sealed and encapsulated using a focused, high energy liquid jet containing a sealant. The sealant in the focused, high energy liquid jet is deposited on and seals the edges of the kerf formed by the cutting operation to encapsulate dust and short length fibers formed by the cutting of the fibrous work piece. The focused, high energy liquid jet is emitted from a nozzle and the sealant is introduced into and mixed with the liquid before the liquid exits the nozzle. Portions of the fibrous work piece can be compressed by hold down shoes or by one or more high pressure air streams directed onto the work piece adjacent where the work piece is being cut to facilitate the formation of a cleaner edge on the kerf being cut in the fibrous work piece.

Abstract: An apparatus for cutting a moving substrate includes a cutter nozzle connected to a movable support. A supplying mechanism provides a cutting fluid to the cutter nozzle at a pressure which provides for a fluid flow rate from the cutter nozzle which is sufficient to cut the substrate in a selected cut pattern. A designating mechanism identifies a plurality of selected article lengths along the substrate, and a transporting mechanism moves the substrate at a predetermined speed along the machine direction during the cutting of the substrate. An actuating servo moves the cutter nozzle along a selected cutting path, and a regulating mechanism controls the actuating servo by employing a selected, electronically stored data set. The data set is configured to move the actuating servo in a selected sequence, and the sequence has a predetermined correspondence with the movement of the substrate to thereby direct the cutter nozzle along the selected cutting path and provide the selected cut pattern on the substrate.

Abstract: A handling and supporting structure (10) for cutting machines, applicable in particular to machines that perform water jet cutting operations on leathers, hides and synthetic materials, has a plurality of comb-like elements (12), obtained starting from a reduced thickness sheet. These elements are parallel with one another and/or differently oriented, and are formed by approached and aligned needles (20), whose sides decrease in width from the portion near the base (12') from which they develop vertically up to the top of the structure. The structure also has a supporting frame for the comb-like elements (12), made up by two or more laminations (14) of any form and size, vertically and transversally arranged relatively to the elements (12).

Abstract: A waterjet cutting head for cutting a moving sheet has a base plate and a cover plate positioned over the base plate. The cover plate includes an upper support surface for supporting the sheet and has depending chamfered sidewalls extending downwardly to the base plate to define a chamber. The upper support surface includes two matrix arrays of circular shaped suction apertures through which air is drawn by a fluid motor to draw the sheet into flat engagement with and over the upper support surface. A waterjet emitting aperture is located in the upper support surface between an upstream suction aperture and a downstream suction aperture in a first general direction relative to sheet travel. A waterjet nozzle is positioned in the chamber below the waterjet emitting aperture for directing a waterjet through this aperture to cut through the sheet. The upstream aperture is positioned partially offset in a direction orthogonal to the first general direction relative to the downstream suction aperture.

Abstract: An apparatus for cutting a moving substrate includes a cutter nozzle connected to a movable support. A supplying mechanism provides a cutting fluid to the cutter nozzle at a pressure which provides for a fluid flow rate from the cutter nozzle which is sufficient to cut the substrate in a selected cut pattern. A designating mechanism identifies a plurality of selected article lengths along the substrate, and a transporting mechanism moves the substrate at a predetermined speed along the machine direction during the cutting of the substrate. An actuating servo moves the cutter nozzle along a selected cutting path, and a regulating mechanism controls the actuating servo by employing a selected, electronically stored data set. The data set is configured to move the actuating servo in a selected sequence, and the sequence has a predetermined correspondence with the movement of the substrate to thereby direct the cutter nozzle along the selected cutting path and provide the selected cut pattern on the substrate.

Abstract: A method and apparatus for operating a screw drive apparatus. The apparatus may include a threaded rod having a helical thread, a nut disposed about the threaded rod and having a load-bearing channel aligned with and radially outward from the helical thread, and a plurality of balls between the helical thread and the load-bearing channel. The apparatus may further include a housing with at least one support bearing having an inner race coupled to the nut and an outer race coupled to the housing and rotatable relative to the inner race. A retaining member is removably and adjustably coupled to the nut to apply an adjustable force against the support bearing in a direction generally parallel to a longitudinal axis of the threaded rod.

Abstract: A water jet edge trimming station for trimming the edges of coated paper during on-machine operation includes backsplash compensating features. The edge trimming station has a cutting station over which the web travels to be cut. The water jet travels along a water jet axis to a point of impingement at the cutting station to cut the web. The cutting station has an effluent receiving aperture at the point of impingement. A negative pressure mixing zone located below the aperture draws effluent by-products or backsplash associated with cutting of the web below the cutting surface of the web. The water jet axis is offset a first predetermined angle chosen relative to a normal axis passing at right angles through the point of impingement to reduce backsplash. The water axis jet is rotated about the normal axis by a second predetermined angle to direct the effluent by-products away from the water jet nozzle and the traveling web.

Abstract: The combination of a table and a table-type microtome has a base having an internal volume and a linear guide. A seating device is movably mounted on the base. The seating device is movable along the linear guide. A drive causes movement of the seating device relative to the base along the linear guide for height adjustment. A table-type microtome is arranged on the seating device. At least one appliance for the table-type microtome is arranged in the internal volume of the base and is operatingly connected to the table-type microtome.

Abstract: A deflector device is provided for a liquid-jet cutter wherein the cutting element is mounted upon an assembly which moves the cutting element between cutting and idle positions. A deflector disk is located on the lower end of this support assembly as maintained in a stationary position immediately below the idle position. During operation, the cutting element is moved to a cutting position immediately adjacent the product support surface which provides products to be cut to the cutter. When it is desirable to halt cutting, the cutting element is moved to a position remote from the product support surface and above the deflector disk. The assembly utilized to control movement of the cutting element positions the cutter at a remote distance from the deflector disk when in an idle state to minimize wear upon the components.

Abstract: A compact catcher assembly (20) for an abrasive waterjet having a nozzle assembly (22) and a jewel orifice (not shown) for producing a high velocity fluid jet (26) to cut a workpiece within a small area in which to receive the catcher assembly, such as between the upper and lower flanges (28) and (30) of an I-beam (32). The catcher assembly includes a deflector block (42) having an upper surface (62) defining a perimeter, a lower surface (64), and a cylindrical side surface (60) vertically spacing the upper surface from the lower surface. The upper surface has a vertically extending first inlet port (68), while the side surface defines a first exhaust port (74) extending horizontally through the side surface. The deflector block includes an inlet channel (66) extending normally from said entry port to a predetermined distance within the deflector block to define a bottom surface (70) opposite the entry port.

Abstract: An automatic packaging system for dry lasagna noodle product includes a vacuum drum which automatically lifts a top layer of lasagna noodle from a bottom layer. The layers are travelling on a conveyor belt. The vacuum drum replaces the top layer back onto the conveyor belt behind the bottom layer. A water knife cutter is disposed downstream from the vacuum drum. The water knife cuts the lasagna in half. An inspection/rejection station is disposed downstream from the water knife cutter. The inspection/rejection station inspects piece of lasagna to ensure that it is of uniform shape and satisfies a predetermined minimum quality standard. A swing conveyor is disposed downstream from the inspection/rejection station. The swing conveyor transmits the lasagna onto one of two travelling conveyors. The travelling conveyors transmits the lasagna onto a loading conveyor. The loading conveyors transmits the lasagna into a bucket in a bucket indexer station.

Abstract: An apparatus for cutting a web with a rotary cutter 31 includes a cutter drum 42, which has an air suction chamber 58 and air discharge chambers 59A and 59B, these chambers being formed in its inside, as well is having first air jet holes 71, second air jet holes 72, and third air jet holes 73, these air jet holes 71 to 73 being open in its outer periphery.

Abstract: An apparatus for slitting baghouse filters from baghouse cages comprising a generally tubular cutting chamber having an inlet, an outlet and a plurality of angularly disposed conduits. A water knife for cutting the filtration bags, within the chamber, as the bags longitudinally pass therethrough is disposed in at least one of the conduits. The size and angle of the water knife is varied according to the material comprising the filter bag. The water knife can use any fluid but water is preferable. The water and tubular chamber act to suppress dispersion of material captured in the bag. The water contaminated with material carried by the bag can be directed to a proper disposal or collection area.

Abstract: An arrangement for processing material with a liquid jet comprising a laser for emitting a laser beam. The arrangement includes a processing module having a nozzle duct connected to a liquid supply line for forming a liquid jet. The nozzle duct has an intake opening lying in an intake opening plane. An optical element couples the laser beam into the liquid jet, and the optical element of the laser beam is focused in a focusing point range and into the intake opening plane of the nozzle duct. The liquid supply line for the nozzle duct defines an area formed above the nozzle intake opening having a height dimensioned relative to the cross-sectional area of the intake opening such that the area above the nozzle intake opening does not include a liquid retaining chamber.

Abstract: A method and apparatus for manufacture of duckbill valves in which the opposed lips of the valve are split by applying a high fluid pressure inside the valve. This pressure causes the valve to balloon and burst. Preferably, the valve is supported over all of its outer surface except the end to be split by a die. The system is particularly suited to duckbill valves made of thermoplastic elastomer.

Abstract: An actuator apparatus (10) includes a transverse support structure (14) for guiding a transverse carriage (16) therealong, with the carriage being powered by a remotely located rotational actuator (20) through an endless belt (80) secured to the carriage (16). A second carriage (26) moves along a longitudinal support structure (24) cantilevered transversely from carriage (16). The second carriage is powered by a remotely located second rotational actuator (28) acting through a second endless belt (150). A working tool (30) is mounted on the second carriage (26) for high speed bi-directional movement.

Abstract: A method for cutting the leader of the web in a paper or board machine in the dryer section of the machine by a jet of pressurized water. The web is placed against the drying wire when it is being cut, and the jet is directed at the web from the free side of the web. The water jet pressure used is from about 40 bar to about 400 bar, preferably from about 100 bar to about 350 bar, which is produced by an ordinary pressure washer.

Abstract: A distinctive method and apparatus (20) technique for intermittently applying a component (22) onto a moving substrate (26). The method and apparatus can include a conveyor (28) configured to provide the moving substrate (26) at a selected substrate speed, and a transporter (30) configured to deliver a component web (24) at a selected component web speed which differs from the substrate speed. A rotatable applicator roll (32) has an appointed rotational direction (36), and an outside applicator surface (34). The applicator roll is configured to be rotated at a rate which provides to the applicator surface (34) a surface speed which is substantially equal to the substrate speed. At least one deceleration carriage (40) is assembled to rotate with the applicator roll (32) and is configured to receive and hold a selected portion of the component web (24).

Abstract: A progressively feeding and machining apparatus has a die for placing a sheet material thereon, the die having a machining pattern for machining the sheet material, an upper punch base or a machining head movable toward and away from the die and having a plurality of punches for machining the sheet material in coaction with the die in a predetermined number of machining cycles according to the machining pattern, a feed mechanism for moving the die, with the sheet material placed thereon, and the punches relatively to each other to align a machining position on the sheet material with the punches each time the sheet material is machined by the die and the punches, a suction chamber communicating with the machining pattern, and a closure mechanism for isolating a machined region of the machining pattern from the suction chamber to maintain the suction chamber under a vacuum when the suction chamber is evacuated.

Abstract: A sound reduction system (40) reduces noise generated by a fluid cutting jet (10). The fluid cutting jet moves along a predetermined path of travel to pass the stream across another object (14) for cutting the object. The system includes a tank (42) for collecting the liquid stream from the fluid cutting jet. A plurality of tubes (46) are supported in the tank for directing the liquid stream into the tank. The tubes are arranged side-by-side in the tank along the path of travel of the stream. The tubes are positioned in the tank with their upper collection ends (54) extending above the tank and their lower drainage ends (52), directed towards the bottom of the tank. A cover (64) caps the collection ends of the tubes. A thin aperture (63) is formed in the cover to allow entry of the liquid stream into the tubes.

Abstract: A foam contouring machine has first and second rollers mounted to a machine frame for rotation about mutually parallel axes. The first and second rollers have different diameters and define between them a nip. A cutting edge is mounted for cutting foam material drawn through the nip by rotation of the rollers. Each roller has a drive motor, and a controller is connected to each drive motor for independently controlling the speed of rotation of the rollers, the controller equalizing the speed of surface rotation of the rollers for rollers of different diameters. The first roller may be a pattern roller and the second roller may be a backup or compression roller. The machine also has a drive coupling assembly, which has selectable first and second modes of operation for converting operation of the machine between a foam surfacing and a foam profiling operation. The first mode independently couples each of the motors to a corresponding one of the rollers.

Abstract: An improved apparatus for forming profiled edge lamination (PEL) dies rapidly and accurately is disclosed.

Abstract: A method and apparatus is provided for dimensioning and manipulating a patterned material by selectively applying a vacuum and/or positive pressure to the patterned material.

Abstract: An apertured film for use as a topsheet in absorbent products wherein the film is apertured and includes a plurality of micro-holes and a plurality of large-sized holes. A method of forming the film is disclosed, as well as an absorbent product incorporating the apertured film as a topsheet. The method includes the step of supporting the starting film on a backing member which has recessed zones into which the film may be deformed. In the preferred embodiment, fluid in the form of columnar streams is directed from at least two sets of orifices against the upper surface of the starting film. The orifices of the first set have a diameter greater than 10 mils, and the orifices of the second set have a diameter less than or equal to 10 mils. The fluid is discharged from the smaller orifices at a pressure of at least 500 psig, and the fluid is discharged from the larger orifices at a pressure less than 500 psig.

Abstract: A papermaking machine uses a low pressure water jet mounted on a pneumatic actuator for movement at least as fast in the cross machine direction as the paper web moves in the machine direction for a distance of 2 to 12 inches. The jet rapidly cuts a tail with a blunt edge of 2 to 12 inches wide from the web. The actuator is mounted on a screw or belt driven carriage to traverse the web and expand the tail after it has been threaded through the dryer section until the tail encompass the entire web and thus completes the threading process. A controller coordinates an air jet positioned beneath a doctor blade and a vacuum suction roll which engages the last press roll. The air jet and vacuum suction roll are actuated when the blunt end of the tail engages the doctor blade. In this way a tail with little or no streamer is formed and blown onto a dryer fabric supported on a vacuum suction roll which leads the tail into a single tier dryer section.

Abstract: A papermaking process dry end slabbing method using high pressure fluid cutting moves generally parallel to a spool at the end of the papermaking process. The process removes multiple layers of unwanted paper which may be of the wrong grade, poor quality, mis-spooled or otherwise damaged from the spool. A first method uses a carriage mounting an articulated cutter. Vertically extensible pneumatic or hydraulic cylinders and anti-oscillation and thrust support telescopic stanchions displace the cutter in response to input from a set of sensors used to detect a surface of the paper. A track embedded in the floor guides the carriage generally parallel to the spool. The track can be a geared rack, a rail, a channel defined in the floor or a wire embedded in the floor. A driven pinion gear or wheel, undriven foot or wheel, or sensing equipment disposed within the carriage interacts with the track to guide the carriage.

Abstract: A method for cutting an extruding honeycomb structure by a jet of high pressure water. The jet is controlled in position to assure a smooth, straight cut perpendicular to the extruding direction.

Abstract: An interface for incorporation between an articulated arm robot and a cutting nozzle for cutting a circular opening in a workpiece. The interface includes apparatus for moving the cutting nozzle independently of the arm robot. The interface includes a first moving mechanism for moving the cutting device linearly to an offset position with respect to an axis extending through a center of the opening to be cut, and a second moving mechanism for moving the offset cutting nozzle in a circular path around the axis to cut the opening.

Abstract: An arrangement for cutting the leader of the web in a paper or board machine in the dryer section of the machine by a jet of pressurized water. The web is placed against the drying wire when it is being cut, and the jet is directed at the web from the free side of the web. The water jet pressure used is from about 40 bar to about 400 bar, preferably from about 100 bar to about 350 bar, which is produced by an ordinary pressure washer.

Abstract: An apparatus for directing a selected fluid to a movable substrate includes a nozzle connected to a movable support, and a supplying mechanism for providing the fluid to the nozzle at a pressure which provides for a selected fluid flow rate from the nozzle. The supplying mechanism includes a torque conduit section which has a longitudinal torque axis thereof and is configured to absorb torsional energy produced by moving the support. An actuating servo rotates the support to move the cutter nozzle along a selected cutting path, and the actuating servo has a servo axis of rotation which is arranged substantially collinear with the longitudinal axis of the torque tube conduit section.

Abstract: A clipped tail, which is the severed lead end of a paper web tail formed on a papermaking machine, is produced in the tail supported on a roll by combining the operation of a water jet, which projects a high pressure stream of water and is moved laterally to sever the tail transversely to its direction of travel, with the operation of a doctor having a blade, which moves with the water jet and which lifts and deflects the tail clip and following tail from the roll. An air stream is used to guide the tail downstream of the doctor blade. Both the water jet and doctors are mounted on a traversing apparatus to move transversely together across the traveling tail to automatically produce the tail clip and direct it to thread the downstream portion of the papermaking machine.

Abstract: A machine tool for cutting workpieces includes a cutting head with at least two cutting units each providing cutting beams directed at the workpiece so as to impinge thereon closely adjacent each other to cooperate in the cutting action. The machine tool includes a worktable to support the workpiece, and the workpiece and cutting head are relatively movable to provide a cutting line in the workpiece. At least one of the cutting units is movable relative to the other so that the angular relationship of the cutting beams may be varied, and the supply of the cutting medium is separately controlled for the cutting units. In one embodiment the cutting beams are high speed water jets which may contain abrasive and the cutting characteristics of the jets may be varied.

Abstract: A method and apparatus that allows the removal of solid material from a workpiece utilizes a high velocity stream of ice which is caused to impinge on the workpiece. A working liquid, such as water, is supplied at high pressure to a discharge nozzle with an orifice for forming the needle-like stream. The water is cooled before it reaches the nozzle to a temperature below its freezing point so that at least some of the stream is transformed to ice. Optionally, the stream is cooled after it is emitted from the orifice by flowing an envelope of cryogenic gas around the emitted stream. The apparatus includes an inner conduit that carries the working liquid through a cutting tool where the liquid is at least partially solidified by an evaporator that utilizes a cryogenic fluid to cool the working liquid.

Abstract: A cutting-off device and at least one tear detector are provided for cutting a web of paper in a press end of a paper machine, in response to a tear in the web of paper in a single-tier dryer end, the tear of the web of paper being recognized via a tear signal and transmitted to the cutting-off device. The tear detector has a transmission/reception base unit, which, on the one hand, at the start of a production cycle, or whenever a tear in the paper web is detected, records and stores the spectrum of the existing shade of color of the corresponding dryer felt, and possibly updates the stored shade of color at the time of subsequent tears. On the other hand, upon a later tear in the paper web, the base unit compares the shade of color of the dryer felt at the existing tear and the previously stored shade of color. If they match, the base unit activates the cutting-off device when (and only when) the stored shade of color of the dryer felt is recognized.

Abstract: A safety apparatus for use in a hydrocutting or hydroblasting system which has a normally closed shutoff valve for coupling a high pressure water source to a hydrocutting or hydroblasting gun. The shutoff valve is controlled by a solenoid valve coupled between an air-to-open (ATO) input of the shutoff valve and an air power source. A normally open inductive proximity switch, through a relay circuit, provides a control signal to the solenoid valve. The inductive proximity switch is located near a cutting or cleaning nozzle of the gun. When the inductive proximity switch comes in close proximity of a metal object to be cleaned or cut, the proximity switch closes, thereby opening the solenoid valve and the shutoff valve. When the gun is removed from the physical proximity of the metal, the inductive proximity switch opens, thereby turning off the shutoff valve.

Abstract: Broke handling and reducing apparatus and method for comminuting a moving continuous sheet or web material such as paper broke in the dryer or converter section of a papermaking machine, includes a plurality of high pressure water jet cutting nozzles mounted in spaced-apart relation transversely to the direction of movement of the material and are mounted so as to direct high pressure cutting jets into the path of movement. The nozzles are mounted so that at least some of the nozzles are cyclically moved with respect to others of said nozzles to form a plurality of mutually intersecting jet cutter paths to reduce the material into a multiplicity of smaller discrete or easily separable pieces.

Abstract: The invention relates to a method and apparatus for cutting the edge of a fibre web (4) in a paper machine. In the method, water nozzles (13a, 13b) are Conducted in a transverse direction with respect to the edge of the fibre web (4) so that the place where the cut comes against the surface of the yankee cylinder of the drying unit varies. The apparatus comprises water nozzles (13a, 13b) used for cutting, pipes (14a, 14b), a base (16), and a pneumatic cylinder (17) by which the water nozzles (13a, 13b) are deflected both in a longitudinal and transverse direction with respect to the fibre web (4).