Abstract: A method and apparatus for replacement of damages display shield (typically glass) covering a display screen on a device, typically a mobile phone. Mobile phones have an electronic display protected by a glass shield. Between the glass and the display is often a plastic polarizing or other intermediary sheet. Removal of a damage glass can be accomplished by cutting thru the polarizer with a moving wire or blade. This separates the glass from the sensitive display and allows replacement of the glass without damaging the more expensive display.

Abstract: An improvement in table saw safety is provided, being a new and improved apparatus and method for stopping the blade of a saw very quickly, thereby preventing serious harm to the operator of the saw. The saw brake senses the approach of a conductive element, such as a finger or a hand, to the saw blade, and immediately stops the saw.

Abstract: The invention is based on a power tool, in particular a stationary saw, having a guard device which has a guard element. It is proposed that the guard device has an actuator system, which is provided for monitoring an opening which is formed at least by the guard element and is adaptable to at least one geometric feature of a workpiece.

Abstract: A power tool includes a sensing circuit mounted on a printed circuit card is electrically connected to a switching power supply that supplies electrical power to the sensing circuit. The sensing circuit is not connected to earth ground to enable detection of an operator approaching a moving implement without the operator necessarily being electrically connected to earth ground.

Abstract: A manually fed working machine including a working tool, a feeding area in front of the tool, a detector covering at least a section of the feeding area for a contactless detection of human skin, the detector including at least one radiation unit and at least one receiver unit. The at least one radiation unit emitting radiation towards the section of the feeding area, the radiation being emitted with at least two different wavelengths in the wavelength range between 900 nm and 1500 nm, whereas the at least one receiver unit receives the radiation reflected from the section of the feeding area, and a signal evaluation unit connected with the detector calculating the quotients or differences of the intensities of the reflected radiations received by the receiver unit and the at least two different wavelengths emitted from the radiation unit.

Abstract: A machine tool monitoring device having a detection unit, which is configured to detect the presence of a material type in a machine tool work area by spectral analysis of a radiation. The detection unit has a sensor unit having at least one sensitivity region for detecting radiation in a wavelength range that is situated at least partially in the infrared spectrum.

Abstract: Woodworking machines including conductive cutters adapted to cut workpieces, and motors adapted to drive the cutters are disclosed. The machines also include a contact detection system adapted to detect contact between a person and the cutter, and to distinguish contact between the person and the cutter from contact between the workpiece and the cutter. The machines further include a reaction system adapted to cause a predetermined action to take place upon detection of contact between the person and the cutter by the contact detection system.

Abstract: A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power tool (10) is provided. The safety mechanism (14) is configured to actuate upon receipt of a signal from the sensing mechanism (12). According to a first aspect, the safety mechanism (14) is arranged to rapidly displace the active portion (26) away from a user extremity. Alternatively, according to a second aspect, the safety mechanism (14) is arranged to rapidly urge an extremity of the user away from the active portion (26) of the power tool (10).

Abstract: Woodworking machines are disclosed having cutting tools adapted to cut workpieces. The machines include a detection system adapted to detect one or more dangerous conditions between a person and the cutting tool. The machines also include a brake mechanism having one or more braking components adapted to engage and stop the cutting tool in response to the detection of a dangerous condition.

Abstract: A table saw having a reaction system configured to take a predetermined action to mitigate injury upon detection of a dangerous condition is disclosed. The reaction system has a component in a predetermined orientation relative to the blade and the component is configured to maintain its orientation relative to the blade as the blade is raised and lowered.

Abstract: A manually fed working machine including a working tool, a feeding area in front of the tool, a detector covering at least a section of the feeding area for a contactless detection of human skin, the detector comprising at least one radiation unit and at least one receiver unit. The at least one radiation unit emitting radiation towards said section of the feeding area, said radiation being emitted with at least two different wavelengths in the wavelength range between 900 nm and 1500 nm, whereas the at least one receiver unit receives the radiation reflected from the section of the feeding area, and a signal evaluation unit connected with the detector calculating the quotients or differences of the intensities of the reflected radiations received by the receiver unit and the at least two different wavelengths emitted from the radiation unit.

Abstract: A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power tool (10) is provided. The safety mechanism (14) is configured to actuate upon receipt of a signal from the sensing mechanism (12). According to a first aspect, the safety mechanism (14) is arranged to rapidly displace the active portion (26) away from a user extremity. Alternatively, according to a second aspect, the safety mechanism (14) is arranged to rapidly urge an extremity of the user away from the active portion (26) of the power tool (10).

Abstract: A manually fed working machine including a working tool, a feeding area in front of the tool, a detector covering at least a section of the feeding area for a contactless detection of human skin, the detector comprising at least one radiation unit and at least one receiver unit. The at least one radiation unit emitting radiation towards said section of the feeding area, said radiation being emitted with at least two different wavelengths in the wavelength range between 900 nm and 1500 nm, whereas the at least one receiver unit receives the radiation reflected from the section of the feeding area, and a signal evaluation unit connected with the detector calculating the quotients or differences of the intensities of the reflected radiations received by the receiver unit and the at least two different wavelengths emitted from the radiation unit.

Abstract: Methods to detect when a human body contacts a predetermined portion of a machine are disclosed. The methods distinguish contact with a person from contact with other materials. The methods are particularly applicable in woodworking equipment such as table saws to distinguish contact between a person and the blade of the saw from contact between the blade and wet or green wood. The methods and woodworking equipment may include predictive blade stop algorithms that prevent unnecessary activations of a safety brake during coast down of a blade and continued protection in the event a main power switch is turned off.

Abstract: Control device and method for controlling the impingement of the workpiece by a water jet or an abrasive water jet in a cutting unit. Control device includes a feeder composed of at least two flow-through areas positionable between a high-pressure water supply and a jet nozzle of the cutting unit. At least one of the flow-through areas includes a high pressure area, and at least one of the flow-through areas includes a pressure-reducing area. At least one switchable valve is arranged in the high-pressure area, a pressure-reducing mechanism is arranged in the pressure reducing area, and an impingement line is coupled to the at least two flow-through areas and coupleable to the jet nozzle.

Abstract: A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power tool (10) is provided. The safety mechanism (14) is configured to actuate upon receipt of a signal from the sensing mechanism (12). According to a first aspect, the safety mechanism (14) is arranged to rapidly displace the active portion (26) away from a user extremity. Alternatively, according to a second aspect, the safety mechanism (14) is arranged to rapidly urge an extremity of the user away from the active portion (26) of the power tool (10).

Abstract: A machine is disclosed having a detection subsystem adapted to detect contact between a person and a specified portion of the machine, and to distinguish that contact from contact with other materials. The detection subsystem imparts an electrical signal to a specified portion of the machine, and distinguishes that contact based on a predetermined frequency response of the electrical signal. A reaction subsystem then causes a predetermined action to take place. The machine may be a power saw designed to minimize injury in the event a person accidentally contacts the blade.

Abstract: A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power tool (10) is provided. The safety mechanism (14) is configured to actuate upon receipt of a signal from the sensing mechanism (12). According to a first aspect, the safety mechanism (14) is arranged to rapidly displace the active portion (26) away from a user extremity. Alternatively, according to a second aspect, the safety mechanism (14) is arranged to rapidly urge an extremity of the user away from the active portion (26) of the power tool (10).

Abstract: A machine tool monitoring device having a detection unit, which is configured to detect the presence of a material type in a machine tool work area by spectral analysis of a radiation. The detection unit has a sensor unit having at least one sensitivity region for detecting radiation in a wavelength range that is situated at least partially in the infrared spectrum.

Abstract: Improved methods to detect when a human body contacts a predetermined portion of a machine are disclosed. The methods distinguish contact with a person from contact with other materials. The methods are particularly applicable in woodworking equipment such as table saws to distinguish contact between a person and the blade of the saw from contact between the blade and wet or green wood.

Abstract: A machine is disclosed having a detection subsystem adapted to detect contact between a person and a specified portion of the machine, and to distinguish that contact from contact with other materials. The detection subsystem imparts an electrical signal to a specified portion of the machine, and distinguishes that contact based on a predetermined frequency response of the electrical signal. A reaction subsystem then causes a predetermined action to take place. The machine may be a power saw designed to minimize injury in the event a person accidentally contacts the blade.

Abstract: A sheet processing apparatus, by which a failure in control does not occur even if cutting wastes are conveyed by a conveying unit and an image forming apparatus having the sheet processing apparatus are provided. The sheet processing apparatus has a cutter unit for cutting a sheet, a dust box for accommodating the cutting wastes, a conveying belt pair which conveys the cut sheet, sensors for detecting the sheet conveyed by the conveying belt pair, and a controller for controlling conveyance of the sheet based on the signals detected by the sensors, wherein when the length of the sheet detected by the sensor is equal to or less than a predetermined amount, the controller does not determine the sheet as a sheet.

Abstract: A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power tool (10) is provided. The safety mechanism (14) is configured to actuate upon receipt of a signal from the sensing mechanism (12). According to a first aspect, the safety mechanism (14) is arranged to rapidly displace the active portion (26) away from a user extremity. Alternatively, according to a second aspect, the safety mechanism (14) is arranged to rapidly urge an extremity of the user away from the active portion (26) of the power tool (10).

Abstract: An arrangement for cutting an optical fibre comprises a fibre cutter for cutting the fibre. A motor is provided to operate the cutter. To start a cutting movement, the motor is controlled by a control unit in response to a start signal. The start signal is generated when the fibre is located in the cutter. A detector is connected to the control unit to detect when the fibre snaps off and in response thereto cause the control unit to generate a stop signal to stop the cutting movement. If no fibre snap off is detected, the cutting movement is automatically stopped at a predetermined position of the cutter.

Abstract: Woodworking machines including cutting tools and motors adapted to drive the cutting tools are disclosed. The machines also include a detection system adapted to detect a dangerous condition between the cutting tool and a person, and a reaction system adapted to perform a specified action upon detection of the dangerous condition. The machines further include a control system adapted to test the operability of at least a portion of the detection system and/or the reaction system. The control system is adapted to disable the motor if the tested portion is inoperable. The control system also includes a test mode to test whether the detection system is working, to test whether various materials would be detected by the detection system, and/or to test whether various materials would trigger the reaction system.

Abstract: A channel cutting tool may include an arbor that connects to a rotating spindle of a machining tool or a similar spinning part of a machining tool. Two slot cutting blades may be fixedly mounted to the arbor. An inner washer may be fixedly mounted on the arbor between the cutting blades and establish the blade spacing. An outer washer may be rotationally mounted to the inner washer with a smaller thickness to facilitate rotation relative to the two cutting blades. The arbor rotates about a longitudinal rotation axis, which also may be the rotation axis for the cutting blades, the inner washer, and the outer washer. The outer washer functions as a depth-limiting safeguard for the channel cutting tool.

Abstract: A sheet finisher includes means for cutting a non-folded edge of at least one folded sheet. Means are used for setting a cutting position in accordance with a preselected length of the at least one folded sheet in a direction of sheet conveyance and a sensed length of the at least one folded sheet in the direction of sheet conveyance. An image forming system includes an image forming apparatus having means for forming a toner image on a sheet in accordance with image data, and the sheet finisher.

Abstract: Woodworking machines are disclosed having movable cutting tools for cutting workpieces in a cutting region. The machines include a detection system adapted to detect one or more dangerous conditions between a person and the cutting tools, and a reaction system associated with the detection system. The reaction system is configured to retract the cutting tool at least partially away from the cutting region upon detection of a dangerous condition by the detection system.

Abstract: A machine is disclosed having a detection subsystem adapted to detect contact between a person and a specified portion of the machine, and to distinguish that contact from contact with other materials. The detection subsystem imparts an electrical signal to a specified portion of the machine, and distinguishes that contact based on a predetermined frequency response of the electrical signal. A reaction subsystem then causes a predetermined action to take place. The machine may be a power saw designed to minimize injury in the event a person accidentally contacts the blade.

Abstract: A positive piece engagement indicator for marking tool is provided in which a metal workpiece is contacted with a workpiece contact probe for providing physical contact with, as well as electrical communication with the metal surface of a workpiece. A test voltage and indicator means are placed in series between the workpiece and marking tool. Upon physical contact of the marking tool engagement surface with the surface of the metal workpiece, a circuit is completed by the electrical communication there between, thereby engaging the indicator means. This allows positive verification of actual engagement of worktool to workpiece.

Abstract: A positive piece engagement indicator for marking tool is provided in which a metal workpiece is contacted with a workpiece contact probe for providing physical contact with, as well as electrical communication with the metal surface of a workpiece. A test voltage and indicator means are placed in series between the workpiece and marking tool. Upon physical contact of the marking tool engagement surface with the surface of the metal workpiece, a circuit is completed by the electrical communication there between, thereby engaging the indicator means. This allows positive verification of actual engagement of worktool to workpiece.

Abstract: A paper feeding device and method, wherein a tray including a paper loading unit, a paper feeding device, a paper cutting device is slid out of a main body of an image forming apparatus. When a new rolled transfer paper is loaded in the paper loading unit, the rolled transfer paper is conveyed so that a tip portion thereof is discharged from a rolled transfer paper outlet of the tray. The discharged tip portion of the rolled transfer paper is cut by the paper cutting device.

Abstract: A portion (14a, 14b) of a chip remover (14) is defined to be vibratory to give an NC machine tool (MT 1) a vibration transferable onto a surface (FS) of a work (13) under a finishing by the NC machine tool (MT1), a decision is made whether the NC machine tool (MT1) enters the finishing, and vibration of the vibratory portion (14a, 14b) is controlled, as the decision is true. A chip removal method and an NC machine tool equipped with a spiral chip remover (113) as a chip remover have various chip removal rules for determining permission/prohibition of the operation of the spiral chip remover (113). This spiral chip remover (113) operates based on commands described in a machining program. When a command in the machining program is executed, the permission/prohibition of the operation of the spiral chip remover (113) is controlled according to the chip removal rules.

Abstract: A paper feeding device and method, wherein a tray including a paper loading unit, a paper feeding device, a paper cutting device is slid out of a main body of an image forming apparatus. When a new rolled transfer paper is loaded in the paper loading unit, the rolled transfer paper is conveyed so that a tip portion thereof is discharged from a rolled transfer paper outlet of the tray. The discharged tip portion of the rolled transfer paper is cut by the paper cutting device.

Abstract: A positive piece engagement indicator for marking tool is provided in which a metal workpiece is contacted with a workpiece contact probe for providing physical contact with, as well as electrical communication with the metal surface of a workpiece. A test voltage and indicator means are placed in series between the workpiece and marking tool. Upon physical contact of the marking tool engagement surface with the surface of the metal workpiece, a circuit is completed by the electrical communication there between, thereby engaging the indicator means. This allows positive verification of actual engagement of worktool to workpiece.

Abstract: A device for removing paper from a damaged paper roll. The device comprising a rotatable platform to support and rotate the paper roll about a central axis. Additionally, the device comprises a circular saw blade attached to a movable arm attached to a track adjacent to the paper roll. The arm is advanceable toward to the central axis of the paper roll such that as the roll is rotated, the saw blade will cut into the roll to thereby remove paper therefrom. The operation of the device can be automated by a controller and sensors such that a single operator can use the device.

Abstract: A composer clipper apparatus that includes a composer for producing a composed ribbon of veneer from veneer pieces disposed edge-to-edge. A conveyor system transports the ribbon of veneer downstream from the composer. The ribbon of veneer is cut into sheets of predetermined length at a clipping station downstream from the composer. A sensor sensing a cut lead edge in the ribbon of veneer, and a coordinated tracking device, controls operation of the clipping station.

Abstract: During a remaining time which is defined by excluding a positioning settling time t.sub.s and a cutting time interval t.sub.T during which a cutting edge is brought into contact with a stock from a period of time T allotted to a cutting operation which is determined by a preset length L.sub.0 and a stock running speed V.sub.A, the cutting edge maintains a speed difference .DELTA. which is as small as possible relative to V.sub.A during a fraction of the remaining time which is as long as possible. An acceleration which causes the speed difference .DELTA. is chosen to be as less as possible below a maximum acceleration which is demanded by the machine specification.

Abstract: A method and apparatus for detecting misoriented wheel assemblies in wheel truing machine punch stations. The wheel assemblies for which determination of proper orientation is sought are provided with at least one reference hole, preferably a valve stem hole extending therethrough at a predetermined location. The apparatus includes a light emitting source which is provided in electrical communication with a light detecting target. The light emitting source and the light detection target are disposed in predetermined positions and orientations on opposing sides of the wheel assemblies when received within the punch station. When the light emitting source is engaged during proper wheel assembly orientation, the light beam will pass through the selected reference hole whereupon it will be received and detected by the light detecting target.

Abstract: A machine for feeding and cutting sheet material includes a housing and a framework pivoted on the housing to permit loading of sheet material into the machine. A feed roll is journalled in the housing. A cooperating pressure roll is journalled on the framework. A spring is adjustably carried on the framework for adjusting the pressure of the pressure roll toward the feed roll. A knife blade on the framework, and fixed to the framework cooperates with a movable knife blade in the housing for cutting predetermined lengths of sheet material. A cam follower bearing is provided in the housing to help guide movement of the knife blade in the housing. A spring adjustment is provided in the linkage connecting the cylinder driving the movable knife blade and the movable knife blade for varying the force of the movable knife blade against the cam roller bearing.

Abstract: A web cutter for use in high speed web transport machines has a roller with a hub, two flanges and three knives supported on the hub between the flanges. In one preferred embodiment the web rides on shoulders provided on the flanges. In another embodiment, the web rides on spacers that are held in position by spring biased conically tipped pilot pins. In a third embodiment the web rides on a slotted cylinder. In all embodiments the web is brought into engagement with one of the knives directly in response to excessive tension in the web.

Abstract: A control method for shearing bars in a bar steel line provided on the final end side of a bar steel production line so as to shear collectively and simultaneously to desired lengths a plurality of bars obtained by dividing a bar steel blank and arranged in parallel with each other, which comprises the steps of obtaining a minimum number of times for shearing the plurality of bars in a minimum time, shifting the order of different shearing lengths in each of the plurality of bars so as to minimize the time required for shearing on the basis of the minimum number of times shearing is performed, and shearing the plurality of bars simultaneously to the different equal-length bar steels in the minimum number of shearings and the minimum shearing required time.

Abstract: A method of minimizing scrap loss in making a drawn container in a multi-die set cupping or end shell press which includes monitoring the sheet for defects before entering the press. The monitor is adapted to detect a defect, send a signal to a control when such defect is detected, and the control thereafter interrupts the operation of the punch of at least the die set in line with the defect when the portion of the sheet having the defect therein enters the die set and suspends such operation until the defect passes through the die set.

Abstract: An elongated sheet of web material has a longitudinal row of feeding holes in each side edge portion and a plurality of binary codes longitudinally spaced along one side edge portion; and an associated web handling and working machine has sprockets which cooperate with the feeding holes to feed the web, a tool or other instrument for working on the web and a device for reading the codes as the web is fed through the machine. Each code comprises a group of data bits and provides such information as the remaining length of web available to be worked upon, the type of instrument suitable to work on the web, and whether the instrument should be rotated to maintain it tangent to its path of travel over the web.

Abstract: A crooked cut detecting system consisting fundamentally of a sensor for sensing irregularities developed on a cut end of a material from which a section was cut away by a sawing machine, an arithmetic means for deriving as a developed crookedness the difference between the maximum and minimum values of the above irregularities, and a comparator to compare the developed crookedness with a standard value defining a maximum allowable crookedness. The operations of the above fundamental constituents are computerized so as to be incorporated in the operation of an ordinary automatic sawing machine, whereby successive irregular cutting operations of an automatic sawing machine can be eliminated.

Abstract: A medicine package including a reservoir containing the medicine, the package bearing a machine readable code indicative of the characteristics of the medicine contained therein. If from reading the code it is determined that the medicine contained in the package can be used to satisfy the needs of a particular patient, then the package is opened and the code is rendered unreadable by the machine. A machine for reading the code, opening the package, rendering the code unreadable, and maintaining a record of the dispensing of the medicine to a particular patient is also disclosed.

Abstract: An apparatus is provided for controlling the raising and lowering of a cutting head assembly of a horizontal bandsaw machine. The apparatus comprises a sensing member for sensing the top surface of a workpiece to be cut and an actuating device which is operatively coupled to the sensing member. The actuating device switches from a first state to a second state when the sensing member senses the top surface of the workpiece. A carrier device is operatively coupled to the actuator wherein the position of the carrier is movable with respect to the cutting edge of the blade of the bandsaw when the actuator is in the first state and the position of the carrier is fixed with respect to the cutting edge of the bandsaw when the actuator is in the second state.

Abstract: An electronic parts mounting apparatus using a band carrier for feeding electronic parts incrementally, the carrier being a strip having many recesses disposed at equal intervals each holding an electronic part and a tape covering the recesses. The apparatus has a support for horizontally supporting the carrier with the coating tape on the top side; a separator for separating the tape from the carrier; and a pickup device for picking up the electronic parts one by one from the recesses in the carrier and by carrying the electronic parts and placing them in position on a circuit board for continuously and stably mounting the electronic parts on the circuit board.

Abstract: In the cutting of a continuous web such as paper or cardboard into sheets employing a cross-cutting apparatus comprising conveyor rolls, a pair of parallel cross-knives and a sheet outfeeder, the improvement in the start-up or restarting of the apparatus which comprises moving the cross-knives to a position not interfering with the free passage of the web, starting the apparatus up by setting the conveyor rolls in rotation, and bringing the cross-knives into the cutting position only after the leading end of the web has been introduced in full web width into the sheet outfeeder.

Abstract: Apparatus for cutting thin laminae of stone, e.g. marble, comprising a saw having two disc blades, a bogie movable beneath the saw and having a pair of vacuum-operated slab-gripping devices each of which is adapted to support a slab upwardly on its edge, and a second bogie movable in a direction transverse to the first bogie and carrying structure for tumbling a slab supported on one longitudinal edge, through 180.degree., so that it rests on its opposite longitudinal edge.