A thermionic generator for converting thermal energy to electric energy includes: an emitter electrode for emitting thermal electrons from a thermal electron emitting surface when heat is applied to the emitter electrode; a collector electrode facing the emitter electrode spaced apart from the emitter electrode by a predetermined distance, and receiving the thermal electrons from the emitter electrode via a facing surface of the collector electrode; and a substrate having one surface. The emitter electrode and the collector electrode are disposed on the one surface of the substrate, and are electrically insulated from each other. The thermal electron emitting surface and the facing surface are perpendicular to the one surface.

A method of operating a converter of a wind turbine for providing electric energy to a utility grid includes determining a grid voltage. If the grid voltage is between a nominal voltage and a first voltage threshold, i.e. higher than the nominal voltage, a normal procedure for lowering the grid voltage is performed. If the grid voltage is above the first voltage threshold, another procedure for keeping the wind turbine connected is performed, wherein the other procedure is different from the normal procedure. Further a corresponding arrangement is described.

An AC current generator for generating an CA current and method therefor and includes a stator and a rotor. The stator includes an outer shell of non-magnetic material enclosing an evacuated chamber and having a distribution of a plurality of ferromagnets attached thereto. The rotor includes an inner core of non-magnetic material located at a stability location within said evacuated chamber and having a distribution of a plurality of diamagnets attached thereto. In addition, the AC current generator includes at least one magnetic flux detection unit located within at least one magnetic field generated by at least one group of ferromagnets of the plurality of ferromagnets. Displacing the rotor from the stability location towards the at least one group of ferromagnets generates a change in magnetic flux in the magnetic field thereby generating an AC current in the at least one magnetic flux detection unit.

Wind turbine systems and methods are provided. An exemplary system includes a wind driven doubly fed induction generator having a rotor and a stator, the stator providing AC power to a stator bus. The system further includes a power converter coupled to the rotor of the doubly fed induction generator, the power converter providing an output to a line bus, and a transformer coupled to the stator bus. The system further includes a solid-state switch coupled between the stator bus and the transformer.

A generator drive system for the generator (3) of an internal combustion engine (1), including a flexible drive having a traction mechanism (5) which is guided across a generator pulley (6) driving the generator (3). The generator (3) is configured and electrically wired such that the generator (3) can be temporarily driven as a motor, and the generator (3) is coupled to the generator pulley (6) or the crankshaft pulley (7) is coupled to the crankshaft (8) via an overrunning clutch (4) which allows the generator (3), when operated as a motor, running faster than the generator pulley (6) or, taking into consideration a gear ratio, the crankshaft (8).

Systems and methods for reducing current imbalance between parallel bridge circuits used in a power converter of a doubly fed induction generator (DFIG) system are provided. A control system can monitor the bridge current of each of the bridge circuits coupled in parallel and generate a feedback signal indicative of the difference in bridge current between the parallel bridge circuits. Command signals for controlling the bridge circuits can then be developed based on the feedback signal to reduce current imbalance between the bridge circuits. For instance, the pulse width modulation of switching devices (e.g. IGBTs) used in the bridge circuits can be modified to reduce current imbalance between the parallel bridge circuits.

A method is employed for operating a wind turbine. Electrical energy is produced by means of a generator and is fed into an electrical power network. The electrical energy is fed to the secondary side of a transformer at a low voltage and is output on the primary side of the transformer at a higher voltage. The potential on the primary side of the transformer is undefined. In the method, a measured value of the voltage between the primary side of the transformer and the earth potential is first recorded. The measured value is compared with a predefined limit value. The electrical energy produced by the generator is changed if the measured value exceeds the limit value. A wind turbine is designed to carry out the method. Faults in the medium voltage network can be reacted to without an additional star point on the primary side of the transformer being required.

A double fed induction generator (DFIG) converter method are presented in which rotor side current spikes are attenuated using series-connected damping resistance in response to grid fault occurrences or grid fault clearances.

A spooling apparatus includes a spool for holding wire, the spool having a wire-retaining section and end plates, the end plates having one or more apertures. A conductive plate is positioned on an end plate of the spool opposite the wire-retaining section, and at least one conductive extension that extends through a corresponding aperture of the end plate such that the conductive extension is adjacent to the wire retaining section. Wire is spooled onto the wire-retaining section, at least a portion of the wire being uninsulated and in electrical contact with the conductive extensions of the conductive plate.

An aerial cable car system including transportation operating equipment for passenger and/or freight transport, wherein electrical consumers are connected for operation thereof to a rechargeable electrical energy store of a transportation operating equipment by a respective power circuit. The transportation operating equipment includes an operating control device connected to measuring devices for dynamically capturing measurement values based on available quantity of energy in the energy store. The operating control device includes a storage module having at least one stored measurement control value and an associated control parameter. The operating control device includes a filter module comparing a captured measurement value to the at least one stored measurement control value and reading out corresponding stored control parameter, based on which power circuits can be selectively coupled or decoupled to the energy store by the operating control device. Electrical consumers in transportation operating equipment can be fed without interruption by the energy store, even during travel.

An arrangement for operating a rail vehicle includes a DC voltage intermediate circuit which is connected to an energy supply network, at least one traction inverter which is connected at its DC voltage side to the DC voltage intermediate circuit and at its AC voltage side which is connected one or more traction motors of the rail vehicle. An auxiliary system inverter is connected at its DC voltage side to the DC voltage intermediate circuit and is connected at its AC voltage side to a primary side of an auxiliary system transformer. Auxiliary systems are connected to a secondary side of the auxiliary system transformer via an auxiliary line. Electrical energy generated by an electrical energy supply unit is transferred via the auxiliary line, the auxiliary system transformer and the auxiliary system inverter into the DC voltage intermediate circuit for operation of the at least one traction motor.

A system for transferring energy to a vehicle, in particular a track bound vehicle, such as a light rail vehicle, wherein the system includes an electric conductor arrangement adapted to produce an electromagnetic field which can be received by the vehicle thereby transferring the energy to the vehicle the system further includes electric and/or electronic devices which are adapted to operate the electric conductor arrangement. The devices produce heat while operating the conductor arrangement and—therefore—are to be cooled. A cooling arrangement of the system includes a structure having a cavity in which at least one of the devices to be cooled is located. The structure includes a cover limiting the cavity at the top, wherein the device(s) to be cooled is/are located at a distance to the cover. The structure is integrated in the ground at the path of travel of the vehicle in such a manner that the cover forms a part of the surface of the ground.

The method according to the invention aims to optimize the operation of a reversible traction substation (Sk) of a power supply system (4) for railway vehicles, said reversible substation being able to be commanded in a traction operating mode or a braking mode. This method includes: determining a current value (Mc) of a favored operating mode;maximizing at least one optimization function (F) that depends on the current value of the favored operating mode, based on instantaneous values (G(t)) of multiple operating properties of the substation (Sk);computing optimized values (Popt(t)) for multiple configuration parameters of the substation (Sk) from maximized values (Gmax(t)) of the operating properties.

A cord storage apparatus includes an electric motor configured to retract a power reception cord to be connected to an external power supply and a control unit configured to determine whether or not the power reception cord is retracted away from the ground when the power reception cord is connected to the external power supply and control the electric motor to stop retracting the power reception cord when the power reception cord is retracted away from the ground.

Systems and methods for controlling exhaust steam temperatures from a finishing superheater are provided. In certain embodiments, the system includes a controller which includes control logic for predicting an exhaust temperature of steam from the finishing superheater using model-based predictive techniques (e.g., based on empirical data or thermodynamic calculations). Based on the predicted exhaust temperature of steam, the control logic may use feed-forward control techniques to control the operation of an inter-stage attemperation system upstream of the finishing superheater. The control logic may determine if attemperation is required based on whether the predicted exhaust temperature of steam from the finishing superheater exceeds a set point temperature as well as whether the inlet temperature of steam into the finishing superheater drops below a set point temperature of steam. The attemperation system may include a characterizing function to linearize the valve operation controlled by the control logic to inject cooled, high-pressure feedwater into the steam upstream of the finishing superheater, which may, in turn, control the exhaust temperature of steam from the finishing superheater. The disclosed embodiments may also be applied to any systems where an outlet temperature of a fluid from a heat transfer device may be controlled.

A steam generator includes a substantially horizontal gas conduit (1) to guide a heating gas flow (2) and an evaporator unit positioned at least partially in the horizontal gas conduit for transferring heat from the heating gas to a flow medium which flows through the evaporator unit. The heat transfer section of the evaporator unit of the steam generator is bottom fed, which means that the inlet conduit is arranged at a lower region of the heat transfer section. The outlet conduit is arranged at an upper region. The inlet conduit allows an once through operation of the evaporator section which is necessary to enable operation under supercritical circumstances. The evaporator unit includes at least two evaporator stages (3, 4) which are arranged in a cascade. Each evaporator stage includes a heat transfer section (12, 21) and a separator (14, 23). The presence of the separators (14, 23) subdivides the evaporator unit into evaporator stages (3, 4).

There are provided a generator internal pipe section that extends in the horizontal direction inside a steam generator; and a communication pipe section that is connected to the generator internal pipe section and is provided with a communication path, wherein one end of the communication path is connected to the pipe path at an upper end of a cross-section perpendicular to the flow direction of the cooling water in the pipe path and the other end of the communication path is positioned at the downside in the vertical direction in relation to one end of the communication path, and wherein one end side and the other end side of the communication path are connected at a position existing at the upside in the vertical direction in relation to one end.

A method of assembling a syngas cooler is provided. The method includes coupling a supply line within a cooler shell, coupling a heat transfer panel within the cooler shell, and coupling a heat transfer enclosure within the cooler shell such that the heat transfer enclosure substantially isolates the heat transfer panel from the cooler shell. A manifold is coupled in flow communication with the supply line, the heat transfer enclosure, and the heat transfer panel.

A waste heat steam generator for a gas and steam turbine power plant is provided. The generator has economizer, evaporator and superheater heating surfaces which form a flow path and through which a flow medium flows. An overflow line branches off from the flow path and leads to injection valves arranged downstream at a flow side of a superheater heating surface in the flow path. The overflow line permits a brief power increase of a downstream steam turbine without resulting in an excessive loss in efficiency of the steam process. The brief power increase is permitted independently of the type of waste heat steam generator. The branch location of the overflow line is arranged upstream of an evaporator heating surface at the flow medium side and downstream of an economizer heating surface.

A steam generation boiler having a reaction chamber formed by a bottom portion in a lower portion, a roof portion at an upper portion, and walls extending vertically between the bottom portion and the roof portion. The walls include vertical end walls having a tapering wall section that tapers symmetrically with respect to its middle axis towards the bottom portion, in which (i) a first group of steam pipes in the tapering wall section including steam pipes on both sides of the middle axis, pass at an angle with respect to the middle axis in a wall plane of the tapering wall section, and from the wall plane into the reaction chamber, and (ii) a second group of steam pipes arranged to pass to the bottom portion along the wall plane.

A control method for boiler outlet temperatures includes predictive control of SH and RH desuperheater systems. The control method also includes control and optimization of steam generation conditions, for a boiler system, such as burner tilt and intensity, flue-gas recirculation, boiler fouling, and other conditions for the boiler. The control method assures a proportional-valve control action in the desuperheater system, that affects the boiler system.

An improved method of making a baked pastry, particularly, a shell or wrap for a samosa from a pastry dough in a convection baking oven having a convection atmosphere, the method comprising baking the dough in the oven at a baking temperature for a baking period of time, the improvement having the convection atmosphere with a sufficiently moist atmosphere for the duration of the baking time to prevent the pastry from becoming dry.

A water heater in which by applying pulsation of a liquid to be heated which circulates between a tank and a heat exchanger, scale that has been deposited on the inner wall (heat-transfer surface) of a to-be-heated liquid flow channel in a heat exchanger is detached, and the number of times of circulation of the liquid to be heated which circulates between the tank and the heat exchanger is controlled to be three times or less. The number of times of circulation is determined, based on the entire volume of the to-be-heated liquid stored in the tank, a boiling time to be taken for the entire volume of the to-be-heated liquid in the tank to reach a predetermined temperature, and the flow rate of the to-be-heated liquid which passes through the to-be-heated liquid flow channel.

An evaporator surface structure of a circulating fluidized bed boiler having a furnace that is enclosed by sidewalls and has a bottom and a ceiling. The evaporator surface structure includes at least one vertical and separate evaporator surface unit that is spaced apart from the sidewalls of the furnace. The at least one evaporator surface unit (i) is formed of planar water tube panels that extend from the bottom of the furnace to the ceiling of the furnace, and (ii) consists of two cross-wise joined vertical water tube panels.

An apparatus for generating electric pulses is disclosed. The apparatus comprises a generator or oscillator for charging a storage capacitor and a control circuit for controlling the discharge of the capacitor through an output or discharge circuit which includes a controllable switch device and two output terminals or electrodes. In an embodiment, the output circuit also includes a high voltage output pulse transformer.Whenever a load resistance exists or occurs between the two output electrodes, a particular detector current will flow through the load resistance and through a specific detector or load sensing circuit in the apparatus. This detector current indicating that an external load resistance is present, will automatically start the charging generator which then will operate to charge and recharge the storage capacitor as long as the detector current exists, i.e. as long as the external load is present.

A self-defense apparatus includes a battery-powered source of high voltage arranged in an insulated housing and a finger probe device which is strapped to one finger of one hand of the user and is electrically connected to the source of high voltage. The finger probe device includes a layer of electrical insulation disposed between the finger and two metal prongs which protrude outwardly adjacent the distal end of the finger. One prong couples to the hot side of the source of high voltage and the other prong couples to the ground side of the source of high voltage. A two conductor cable connects the two prongs to the source of high voltage and when both prongs are placed in contact with an electrically conductive surface, they deliver in excess of 1,200 volts.

A self-defense apparatus includes a battery-powered source of high voltage arranged in an insulated housing and a finger probe device which is strapped to one finger of one hand of the user and is electrically connected to the source of high voltage. The finger probe device includes a layer of electrical insulation disposed between the finger and two metal prongs which protrude outwardly adjacent the distal end of the finger. One prong couples to the hot side of the source of high voltage and the other prong couples to the ground side of the source of high voltage. A two-conductor cable connects the two prongs to the source of high voltage and when both prongs are placed in contact with an electrically conductive surface, they deliver in excess of 1,200 volts.

A horsewhip includes a coupler having one end secured to a handle portion and having a ring formed in the other end. The coupler includes a recess formed in the middle portion. A tail portion includes a loop formed in one end for engaging with the recess of the coupler and includes a free end for engaging through the opening of the ring so as to solidly secure the tail portion to the handle portion. The tail portion may be easily secured to and may be easily disengaged from the handle portion by the users such that the tail portion can be easily replaced with a brand new one.

A battery operated hand held device for use in handling or controlling livestock, particularly cattle, swine, sheep and horses. This invention provides a novel alternative to conventional electric livestock prods, which deliver an electric shock to the animal. While operating on the principle of external stimulus to invoke a flight response, this invention relies on vibration and/or sound rather than painful electric shock. This unique mode of action satisfies the needs in the livestock industry for low stress handling equipment and techniques with the welfare of the animal as a priority.

The present invention provides an apparatus and process for making softgel capsules having incorporated therein other solid dosage forms selected from the group consisting of pellets, smaller capsules, smaller tablets, sustained release solid dosage forms, immediate release solid dosage forms, extended release solid dosage forms and zero order release solid dosage forms, said apparatus comprising: (a) two spreader boxes; (b) two casting drums; (c) a pair of rotary dies having means for suction; (d) a liquid fill system; (e) a wedge for heating gelatine ribbons and feeding said fill; and (f) two lateral dispensing devices said lateral dispensing devices including hoppers having said solid dosage forms, channelguides for transporting said solid dosage forms and a grasping claw for dispensing said solid dosage form into the softgel pocket formed in the rotary dies.

An apparatus for dispensing elongated articles such as straws, including: a container for holding the elongated articles; a hopper to receive some of the elongated articles, where the hopper is reversibly movable between a closed state and an open state; and a manipulator for performing a cycle to release a single elongated article by isolating a single article and then moving the hopper from the closed state to the open state, thereby releasing only the single elongated article.

A method and apparatus for assembling and vending a food or drink product using a machine having a viewing window into the interior thereof. The user selects through a user interface one of a plurality of characters, then selects through the interface the ingredients to include in the product. The ingredients are dispensed into a receptacle that is moved between dispensing locations within the machine by a robotic arm. An animated sequence, soundtrack and lighting pattern is associated with each character. As the robotic arm assembles the product, the animated sequence, soundtrack and lighting for the selected character are run and shown on a display. The user is able to watch the movements of the robotic arm and the animated sequence simultaneously.

When the present time of a clock circuit is a medication time recorded in advance in a SD card, a notice that the medication time has come is given by a voice output portion or the like. Presence/absence of a medicine package in each block of a medicine package case is sensed by a medicine package sensor. The time point and the presence/absence of the medicine package are recorded in the SD card. A notice corresponding to the presence/absence is output. At a time except for the medication time, taking-out of the case, opening/closing of the cover, taking-out and return of the medicine package are recorded in the SD card based on detection signals from the medicine package sensor, medicine package case sensor, and case cover opening/closing sensor. A notice corresponding to the sensed situation is output.

A board comprised of a wood structure having a first surface, a second surface, a first lateral edge, a second lateral edge and opposing ends. Sound attenuating elements embedded within the wood structure and stiffening elements positioned within the wood structure to coincide with the location of floor joist to which the board will be secured. The boards further forming a ceiling/floor structure by laying a single set of the boards adjacent to each other and securing them to the floor joists.

The invention is an apparatus for pre-plating railway ties, including switch ties of varying lengths. An infeed deck and singulator feeds individual ties, each provided with identifying indicia, to a pre-scanner. Using the scanned indicia, a control system accesses stored data to determine a preliminary drill pattern. A scanning and drilling station positions, secures and scans the tie. The scan results are combined with the stored data to produce a corrected optimal drill pattern, which is used to drill the tie. The drilled tie moves to a plate and screw loading station, where the proper plates and fasteners are attached. A fourth station inspects the assembled tie. If it is properly assembled, the screw spikes are tightened and the plated tie moves to an outfeed deck, where it is marked for identification and removed for storage and shipping.

Method and apparatus for cutting out balsa blanket parts comprising the following steps: providing on a surface of a conveyor (12) a row of balsa blankets (1) abutting each other end edge to end edge in butt areas at the joining stations (14.1-14.5); interjoining the balsa blankets (1) in the butt areas at the joining stations (14.1-14.5) to form a balsa blanket web; feeding the balsa blanket web in a direction of feed (F) to a cutting station (15) where the balsa blanket web is stepwise conveyed and cut through crosswise at positions to form the desired parts; providing a next row of balsa blankets on the surface of the conveyor when the rearmost end edge on the rearmost blanket of the balsa blanket web is at the last joining station (14.5), said blankets of the next row abutting each other end edge (4) to end edge (5) and the leading end edge of the foremost balsa blanket in the next row of balsa blankets abutting the rearmost end edge of the rearmost balsa blanket in the balsa blanket web; at the joining stations (14.1-14.5) interjoining the next row of the balsa blankets and joining it with the balsa blanket web in the butt areas.

Disclosed is a low-temperature heat-generating solid wood laminate floor, which comprises: an exterior finished layer, an upper base material layer, a heat-generating layer, and a lower base material layer, which are stacked in sequence and hot-pressed. The upper base material layer, heat-generating layer and lower base material layer comprise 9 layers in total after hot-pressing, the heat-generating layer being positioned at the 5th to the 7th layer, the upper base material layer being above the heat-generating layer, the lower base material layer being below the heat-generating layer, the upper base material layer consisting of 3 to 5 layers, the lower base material layer consisting of 4 to 6 layers, and the exterior finished layer being provided on the upper base material layer by hot-pressing.

A device for at least one self-heated and dense ceramic tube for gas separation. The device includes at least one dense ceramic tube in an environment accessible to a mixture of gases, the at least one tube acting as a diffusion membrane for separating at least one gas from the mixture of gases. Two electrical contacts are provided which allow connecting a power supply to the ceramic tube and driving an electric current through the ceramic tube. The contacts can be in the farm of short coils wrapped around the ceramic tube at difference places. When a voltage is applied to the contacts, an electrical current flows from one contact to the other through the ceramic tube. The current in the ceramic tube heats the tube. Thus, the tubes heat themselves. The hot tube allows separating a gas from the mixture of gases. The driving force for the diffusion is achieved by a pressure difference generated by pumping at the side of the separated gas and pressing at the side of the mixture of gases.

A simulation apparatus includes a storing unit that stores therein information about a shape of a blank piece to be cut out from raw wood, information about a final shape of a wooden piece obtained by compressing the blank piece, and image data of a surface of the blank piece. The apparatus also includes detecting unit that detects a knot appearing on the surface of the blank piece by image recognition using the image data; a shape estimating unit that estimates a shape of the detected knot using shape information on the blank piece; and a determining unit that determines, in accordance with the shape of the estimated knot, a cutting location and a cutting shape of the blank piece in such a manner that the cutting location and shape include a part and a thickness of the knot is substantially the same as that of the compressed blank piece.

A cutting device for cutting a material grappled by a grapple member of a grapple device is mounted on one side wall portion of a bucket which is pivotable vertically with respect to an arm swung vertically and is rotatable on an axis in an extension direction of the arm. The cutting device includes a cutting blade which is positioned outside or inside a side wall of the bucket and is pivotally supported on a base end portion of the open mouth portion of the bucket to be pivoted in a direction along the side wall from a position separated from an opening edge of the bucket to a position along the side wall of the bucket. A hydraulic cylinder is provided on a rear surface portion of the bucket and is connected to a pivoting base portion of the blade.

A waste strip-removing apparatus for use with a ripsaw that saws an incoming board into one or more usable boards and removes the opposite side edges, which become two waste strips that must be removed and transported to a different destination from that to which the usable board(s) is (are) transported. The apparatus includes two air-blasting units each having one or more air nozzles assigned to each waste strip. The air-blasting units are positioned with respect to a lateral direction by a positioning mechanism so that air directed from the nozzles impinges on the waste strips and moves them laterally away from the usable board(s). The positioning mechanism can include a linear motor having two forcers movable along a platen and respectively attached to air-blasting units.

Systems and methods for adjusting a moisture concentration of veneer are provided. In at least one specific embodiment, the method for adjusting a moisture concentration of a veneer can include estimating a moisture concentration of a veneer surface at one or more locations thereon. The method can also include comparing the one or more estimated locations to a minimum moisture concentration level. The method can also include moisturizing at least a portion of the one or more estimated locations that are below the minimum moisture concentration level to increase the moisture concentration thereof.

A method for detecting the three-dimensional structure of a log comprises the operating steps of: making the log (2) rotate axially, leaving it free to translate during the rotation;during said rotation repeating the step of detecting the relative surface structure of the log (2) at least at one log surface portion (13), so that the relative surface structure of substantially all of the points of at least the log (2) lateral surface is detected at least once; andcombining the relative surface structures detected to reconstruct an overall surface structure for at least the log (2) lateral surface,the detection steps being carried out in such a way that each detection step result shares at least several points with at least one other detection step result, while the step of combining the relative surface structures is carried out in such a way that the shared points are made to coincide with each other.

The present invention is a material forming apparatus that includes a piece of material that is a piece of laminated wood, a cover sheet made of plastic material, a flexible bed, a plurality of bed arms and a plurality of drive gears. The material forming apparatus also includes a numerical digital display, a plurality of roller clamps, one or more cranks with a grasping knob and a plurality of pivoting arms that are rotated by rotation of the drive gears and move the bed arms to force the flexible bed and the piece of material into a desired arc radius.

Methods are described for mechanically scraping surfaces of boards, such as flooring boards, to impart random-looking scraped profiles therein. An apparatus for mechanically scraping boards to form the scraped board products also is described. A board, such as a flooring board, having a random-looking scraped appearance that includes overlapping multiple scrape patterns is described. Boards, such as flooring boards, having a simulated rustic or distressed appearance made with the methods and apparatus also are described.

An apparatus and method for spooling wire or cable from a reel assembly. In one embodiment, the apparatus comprises an inner flange assembly and an outer flange assembly. The inner flange assembly is capable of freely rotating relative to the outer flange assembly for spooling wire from any surface. In another embodiment, wire is spooled from a reel assembly comprising an inner flange assembly and an outer flange assembly.

A wire electric discharge machining apparatus according to embodiments includes a wire electrode, a wire supplying unit that supplies the wire electrode, a collecting motor that collects the wire electrode at a predetermined speed, a tension motor that controls a tension of the wire electrode between the wire supplying unit and the collecting motor, a speed calculating unit that calculates a traveling speed of the wire electrode at a predetermined time interval, a speed storing unit that stores the traveling speed calculated by the speed calculating unit, a differential speed calculating unit that calculates a differential speed between a current traveling speed output from the speed calculating unit and a past traveling speed stored in the speed storing unit, and a breakage detecting unit that detects breakage of the wire electrode by comparing the differential speed with a predetermined threshold.

A roll sheet supporting apparatus includes a pair of rotation shafts which are respectively fitted into end portions of the hollow portion of the core tube and configured to support the roll sheet rotatably and capable of being drawn out, an engaging member movable between a projecting position and a retracting position, wherein the engaging member projects from an outer circumferential surface of the each rotation shaft abutting on the core tube to engage with the core tube at the projecting position and retracts inward from the outer circumferential surface of the each rotation shaft at the retracting position, and an engaging member moving unit configured to move the engaging member between the projecting position and the retracting position.

To provide a medium storing and advancing apparatus for inhibiting rotation of a drum when tapes are completely rewound from the drum. The apparatus includes reels supplying and winding up the tapes, a drum winding up the tapes supplied from the reels or rewinding wound-up tapes to supply the tapes to the reels, and an inhibiting mechanism inhibiting further rotation of the drum in a direction of rewinding the tapes when the drum completely rewinds the tapes, whereby the inhibiting mechanism inhibits the rotation of the drum.

A fishing line reeling apparatus for loading a spool of fishing line about a reel of a fishing pole includes a clamp capable of being anchored to a ledge of an existing support surface, and a bracket attached to the clamp wherein the bracket has a dowel capable of rotatably receiving and suspending the existing spool of fishing line above the existing support surface. An arm is located subjacent to the dowel and statically mated to the bracket. The arm has an eyelet attached to a distal end thereof such the fishing line is downwardly guided from the spool and urged along a longitudinal length of the arm prior to passing through the eyelet.