Abstract: A cutting apparatus for cutting a sheet material includes a platform; a rail structure secured onto the platform; a sliding member sliding along the rail structure; a pressing plate disposed under the rail structure and engaging with the sliding member for pressing the sheet material against the platform in response to an external force, wherein a gap exists between the pressing plate and the platform for receiving the sheet material before the external force is exerted; an elastic member connected with and disposed between the rail structure and the pressing plate to keep the gap between the pressing plate and the platform by a recovery force thereof when the external force is released; and a cutting member carried by the sliding member for cutting the sheet material sustained on the platform.

Abstract: A low penetration-force pinmat (20) has been provided for perforating an uncured laminate sheet (14). The pinmat (20) includes a mat portion (28) and a series of pins (26) extending from the mat portion (28). Each pin (26) includes a shank portion (38) and a tip portion (40) extending from the shank portion (38). The tip portion (40) has one or more facets (42) that are positioned adjacent to one or more edges (44). In one embodiment, three facets (42) are adjoined by three edges (44). These facets (42) are positioned at a predetermined facet angle (52) relative to a longitudinal axis (50) of the shank portion (38). Additionally, adjacent facets (42) are positioned at a predetermined blade angle (54) relative to each other so as to define a sufficiently sharp edge (44) for cutting and fracturing the fibers (32). The edges (44) are positioned at a predetermined edge angle (48) relative to the longitudinal axis (50) of the shank portion (38).

Abstract: A method and apparatus for sizing window coverings slidably extendable from a bay into an aisle of a retail outlet. The method includes the steps of locating the center of the window covering relative to a cutting station utilizing a half scale for removing a portion of the window covering from each of its ends.

Abstract: A cutter device has a movable blade, a stationary blade, and a clutch mechanism having a driven gear mounted for undergoing rotation in clockwise and counterclockwise directions and a driving gear for rotationally driving the driven gear about a rotational axis. A cutter drive mechanism has a rotation device connected to the clutch mechanism so that through one complete rotation of the driven gear the rotation device reciprocally moves the movable blade between a first region in which the movable blade is spaced apart from the stationary blade and a second region in which the movable blade cooperates with the stationary blade to cut recording paper. A rotation regulating device regulates rotation of the driven gear in the counterclockwise direction when the movable blade is in the first position.

Abstract: A cutting blade has a pocketed cutting portion and a massive portion at a lower end of said cutting blade. The cutting blade includes a first face and a second face at a spaced distance from the first face, the first and second faces defining a massive portion of the cutting blade. The cutting blade also has exterior side walls extending between the first and second faces, and a plurality of interior side walls spaced inwardly of the exterior side walls and extending from the second face toward the first face to define the pocketed cutting portion of the cutting blade.

Abstract: A punch tool including a punch driver and a punch element. The punch element can include a punch secured to a punch holder, with the punch holder and punch slidably disposed within a punch guide. The effective length of the punch tool can be increased by rotating the punch driver about threads relative to the punch element. The punch tool includes a latch mechanism for preventing rotation of the punch driver relative to the punch element when the latch is in a locked position, but allowing such rotation when the latch is in an unlocked position, thereby controlling unwanted free rotation of the punch driver relative to the remainder of the punch tool. During punching operation, the punch driver, punch holder, and punch are forced slidably relative to the outer punch guide. When a length adjustment is desired, the punch driver can be rotated relative to the punch, punch holder, and punch guide, which typically do not rotate. A locking disk can be rotatably secured to the punch driver.

Abstract: The present invention relates to a manual vegetable cutter, for selectively varied cutting. Furthermore, the cutter of the present invention does not expose the user to risks of serious cuts. The cutter comprises a frame fitted with at least one cutting blade mounted transversely facing a slot through which the cut vegetables pass and also two side rails providing guidance in to and fro translational motion for a guide chamber equipped with a loading volume for the vegetables to be cut up and acting in conjunction with a press-down cap which the user grips in order to move the guide chamber to and fro along the guide rails while constantly exerting pressure on the vegetables contained in the loading volume so that they are pressed against the cutting blade or blades fitted to the frame and can be cut up by the blade or blades.

Abstract: An apparatus for providing an improved two-piece punch construction. The two-piece punch construction includes a supporting member and a punch body. The supporting member includes an aperture in which the punch body is accurately located. The supporting member further includes a supporting surface for supporting the punch body during a punching operation. The punch is constructed by providing at least one through-hole in the supporting member which receives a WEDM wire. The aperture for locating the punch body in the supporting member is made with a WEDM process. The supporting member and punch body are secured together by brazing material.

Abstract: A clamping arrangement is provided for a slitter and/or hole punch for a plastic film processing machine. The punch can be unitarily formed on a base member, and mounted on a block that is affixed to the end of an actuator rod. A double-acting pneumatic cylinder actuator serves as the reciprocating mechanism for the punch. A hold-down clamping mechanism includes an apertured clamping plate and frame that surrounds the punch and is spring-driven using a compression spring mounted over the shaft or rod of the actuator. The compression spring compresses on the upstroke, and assists the cylinder on the downstroke.

Abstract: A transmission structure of a string saw includes an upper suspension arm, a lower suspension arm, a drive lever, a first counterweight, a second counterweight. The first counterweight and the second counterweight are arranged on two sides of the bottom of the drive lever in a symmetric manner. Thus, the drive lever, the lower suspension arm, the upper suspension arm, and the saw blade may be moved upward and downward in a rigid and stable manner by balance of the first counterweight and the second counterweight, so that the saw blade at the high speed may be used to saw the workpiece in a rigid and stable manner, without incurring vibration and noise during the sawing process, thereby enhancing the sawing efficiency and quality.

Abstract: The present invention relates to a device for cutting polymeric optical waveguides (POF-LWLs), comprising a lower clamping jaw (2), an upper clamping jaw (3), and a blade (4), the lower and upper clamping jaws (2,3) holding the POF-LWL (5) to be cut at both sides of the cutting point, seen in the axial direction, by application of a radial pressure.

Abstract: A steel rule die for cutting cloth and synthetic materials. The cutting die includes a primary substrate and a plurality of cutting units that are removably attachable to the substrate in such a manner that they are easy to adjust, remove and replace. The cutting units include secondary substrates with lengths of steel rule attached to them. The cutting units are secured to the primary substrate. Each steel rule is fixedly attached to a secondary substrate that is substantially harder than the primary substrate. The secondary substrate distributes the cutting load applied to the rule over a large surface area on the primary substrate to prevent the cutting units from diving into the soft primary substrate. Substantially the entire length of the steel rule is supported by the secondary substrate, thereby yielding a rigid cutting unit that is not susceptible to deformation.

Abstract: A steel rule die for cutting cloth and synthetic materials. The cutting die includes a primary substrate and a plurality of cutting units that are removably attachable to the substrate in such a manner that they are easy to adjust, remove and replace. The cutting units include secondary substrates with lengths of steel rule attached to them. The cutting units are secured to the primary substrate. Each steel rule is fixedly attached to a secondary substrate that is substantially harder than the primary substrate. The secondary substrate distributes the cutting load applied to the rule over a large surface area on the primary substrate to prevent the cutting units from diving into the soft primary substrate. Substantially the entire length of the steel rule is supported by the secondary substrate, thereby yielding a rigid cutting unit that is not susceptible to deformation.

Abstract: A steel rule die for cutting cloth and synthetic materials. The cutting die includes a primary substrate and a plurality of cutting units that are removably attachable to the substrate in such a manner that they are easy to adjust, remove and replace. The cutting units include secondary substrates with lengths of steel rule attached to them. The cutting units are secured to the primary substrate. Each steel rule is fixedly attached to a secondary substrate that is substantially harder than the primary substrate. The secondary substrate distributes the cutting load applied to the rule over a large surface area on the primary substrate to prevent the cutting units from diving into the soft primary substrate. Substantially the entire length of the steel rule is supported by the secondary substrate, thereby yielding a rigid cutting unit that is not susceptible to deformation.

Abstract: Apparatus and methods for cutting carpet pile are disclosed as including a clipper having a driver, a reciprocating blade and a fixed blade. The fixed blade and the reciprocating blade define an area there between. The fixed blade has a bore passing through the blade and into the area. A fluid supply, connected to the bore, supplies fluid through the fixed blade and into the area. A manifold, attached to the fixed blade, can be used to pass fluid through the fixed blade into the chamber. In such an embodiment, the manifold includes a passage communicating with the bore and the fluid supply. In another embodiment, an orientation mechanism is used to orient the carpet clipping head. In this embodiment, the orientation mechanism includes a base bracket and a pivot bracket. The pivot bracket is pivotally attached to the base bracket at a pivot point. The carpet clipping head is attached to the pivot bracket so that movement of the pivot bracket causes the carpet clipping head to pivot about the lead prong.

Abstract: A die cutting block for forming die cuts from paper and other materials includes a base portion having a recess formed therein having a desired shape formed therein, an insert portion having an outer contour which substantially matches the contour of the recess and a blade interposed between and tightly held between the base portion and the insert portion. The blade extends above the base portion and insert portion to provide an exposed edge for cutting paper and the like into a desired shape.

Abstract: A compass saw comprising a motor-driven reciprocating rod (1) with a tool receptacle (2) disposed at its free end for receiving the clamping shaft (6) of a saw blade (3), a receiving hole (7) and a center bolt (19) that is pre-stressed towards the receiving hole (7), being guided transversely to the reciprocating rod (1) and displaceable in a longitudinal direction (L). The center bolt (19) comprises a centering means configured as a flat bearing surface (21). The bearing surface (21) cuts the longitudinal axis (A) of the reciprocating rod (1) into a slant angle (&agr;).

Abstract: A reciprocal-movement power tool is applied to a cutting device. A movable blade 13 is reciprocally movably provided on a main body. A receiving plate 20 that supports an angle iron 30 to be cut is supported on the main body at a position in front of the movable blade 13. The movable blade is fixed on a front tip of a rod-shaped shuttle screw 12. The shuttle screw 12 moves back and forth in the axial direction within a tubular screw shaft 11. The screw shaft 11 is carved with a female screw portion 11d and is rotated through a joint spindle 9 that is deceleratingly rotated upon rotation of the motor 5 through a deceleration means 8. The shuttle screw 12 has a male screw portion 12b that is threadingly engageable with the female screw portion 11d. Rotation of the screw shaft 11 causes axial movement of the shuttle screw 12 because of the threading engagement between the female screw portion 11d and the male screw portion 12b.

Abstract: A bale processor for cutting or dicing a bale or slab of unvulcanized rubber produces small cubes or blocks of a predetermined size and uniform shape for continuous feeding at a predetermined rate into a mixing machine or blender. A bale or slab of feedstock rubber is advanced incrementally along a slider platform and a segment is sliced from the leading end of the bale. After separation, the segment falls onto a receiving panel from which it is transferred by a vacuum pick-up head to a vacuum hold-down table. Multiple slices are then formed through the segment along the X-axis by circular cutting blades of an X-axis cutter head, thereby forming elongated segment strips. Next, multiple slices are formed through the segment strips in the Y-direction by a Y-axis cutter head which includes circular cutter blades that are extendable and retractable along the Y-axis.

Abstract: An apparatus for cutting a wafer sandwich into a plurality of rectangular pieces has a support surface defining a transport path extending longitudinally through a longitudinal-cutting station and a transverse-cutting station. A plurality of stationary and transversely spaced longitudinal blades extend across the path in the longitudinal-cutting station. The surface is formed in the transverse-cutting station with a plurality of transversely extending and longitudinally spaced slots. An abutment is displaceable immediately downstream of the transverse-cutting station between a blocking position in the path and a retracted position clear of the path. A plurality of transverse blades are displaceable transversely in the slots of the transverse-cutting station across the path.

Abstract: Improved steel rule for use in a cutting die for cutting fixed patterns in a single or plurality of stacked material layers according to the shape of the steel rule. The improvement in the rule assists in the removal of small pieces of scrap material through the bottom of the die. The rule is undercut so that the gap between adjacent cavities is tapered. The tapered gap between adjacent cavities creates a vertical passageway that becomes wider toward the bottom of the passageway. This greatly facilitates removal of scrap material through the bottom of the die. By allowing scrap material to escape through the die, the operators are not required to stop periodically to clean the die, and the likelihood of scrap material becoming trapped in the die is minimized. Thus, the speed of the cutting operation is increased and life of the die may be prolonged.

Abstract: A printer is provided with a cutter for cutting recording paper in arbitrary lengths or cutting recording paper with a part left after cutting. A pair of movable blades, at least one of which is displaced in a direction approximately orthogonal to the paper path, are driven in a cooperative relationship to effect a cutting operation with a fixed blade. The dispersion of force required for tearing off the cut recording paper is reduced, a torn trace of a left part after cutting the recording paper looks nice, and the position of a left part after cutting the recording paper can be arbitrarily set respectively without increasing the size in the direction of the recording paper width.

Abstract: A method of cutting a resilient workpiece having sides in opposition to one another to form at least one cut in the workpiece includes the steps of stretching the workpiece, maintaining the workpiece in stretched condition by applying clamping forces to the sides of the workpiece after the workpiece has been stretched, cutting the workpiece while it is clamped and stretched to form a cut in and extending through the workpiece, and unclamping the workpiece after the cut has been formed to allow the workpiece to return to unstretched condition and the cut to close.

Abstract: The present invention relates to a film cutter assembly in which a blade housing slides along a pair of rails. The blade housing is formed of an upper portion for housing the blade. Either end of the upper portion has a rounded inclined shape from a bottom edge to form a sled shaped runner. The sled shaped runner extends beyond the blade such that the user is prevented from touching the blade. A lower portion of the blade housing slidables bilaterally in a cavity formed below the rails. A clearance is formed between the blade and the rails to allow the blade housing to easily slide over a film to be cut even if the film bunched or doubled over. The upper portion of the blade housing has a concave shape for allowing a user's fingers to easily grip the blade housing. Preferably, the rails are formed of a material which provides an attractive charge to attract the film to the rail and help hold the film flat before and after cutting. For example, the rails can be formed of flexible vinyl or acetal.

Abstract: An automatic tortilla cutter (10) able to cut stacked tortillas utilizing an openable housing (12) having a left housing (12L) and a right housing (12R) pivotally mounted on a housing bracket (12F) therebetween. The cutter (14) is positioned over the housing (12). Both the openable housing (12) and cutter (14) are preferably powered by a piston.

Abstract: A compact, portable metal forming device comprising: 1) a frame having entry and exit ends; 2) guide means adjacent the entry end for guiding a sheet of metal to be formed to a hand operated drive assembly supported within the frame that engages the metal sheet and drives it, through the operation of a series of gear linked separately journaled forming roll pairs mounted in the frame, 3) adjacent the exit end an adjustable cam wheel that engages one edge of the metal sheet and forms that edge just prior to the metal sheet reaching the exit end, and 4) forming the exit end, a guillotine cutter including a shaped exit aperture for cutting the formed metal sheet to any selected length.

Abstract: A working apparatus for band blade provided with a bender for bending a band blade into a predetermined configuration, and a cutter cutting the band blade. The cutter is positioned successively after the bender. And, a working method for band blade having a bending process in which a band blade is bent into a predetermined configuration, and a cutting process in which the band blade is cut. The cutting process is successively conducted after the bending process is previously conducted.

Abstract: A cutting blade includes a shank portion and a cutting portion having a predetermined length and opposed sides, and affixed to the shank portion. The cutting portion has a cutting edge portion having a predetermined length and opposed sides and a continuous portion which continuously extends from the cutting edge portion to the shank portion, so that blade thickness gradually increases in a direction towards the shank portion. The cutting portion further has at least one pair of opposed concave curved surfaces substantially symmetrical to each other with respect to a center line, each opposed concave surface axially extending in a direction substantially parallel to the length of the cutting edge portion and provided on at least one of the cutting edge portion and the continuous portion.

Abstract: A saw blade is used on an electric power saw designed to reciprocate the saw blade. The saw blade has a plurality of saw teeth, a first line extending along tips of the saw teeth, a second line that extends straight between one tip of a distal endmost saw tooth and another tip of a proximal endmost saw tooth. The first line is curved toward roots of the saw teeth with respect to the second line. The second line ranges from 100 to 400 mm in length. One of tips of the saw teeth at a maximum distance from the second line is spaced apart from the second line by a distance of not more than 12 mm.

Abstract: A cheese slicer having a flat base and a blade holder releasably pivotally secured to the base for moving from a locked upright cheese slicing position to a lowered storing position. A unique wide, flat blade slidably carried in the blade holder and having an upper end with a large handle and a lower end. The lower end having a downwardly and rearwardly sloping separating surface terminating in a downwardly protruding blunt slicing edge.

Abstract: The present invention relates to a shear blade assembly for a shearing system. The shear blade assembly includes an upper shear blade and a lower shear blade. The top surface of the lower shear blade is inclined downwardly at an angle of between 0.2 and 0.5 degrees to the horizontal. The bottom surface of the upper shear blade is raked relative to the horizontal, longitudinally of the blades.

Abstract: A sheet cutter has a fixed blade and a movable blade. The fixed blade has a straight edge extending in a lateral direction with respect to a longitudinal direction of a sheet to be cut, and the movable blade is provided so as to be moved in the longitudinal direction. The movable blade has an edge on a side of a blade end portion extending in a direction making a first angle with the straight edge of the fixed blade. The edge of the movable blade is pressed against the edge of the fixed blade.

Abstract: An abrading blade having a shank portion configured for attachment to a conventional reciprocating saw and a cutting edge extending along its lower end. The cutting edge is oriented to be substantially parallel to a line of reciprocation defined by the reciprocal motion of the saw's reciprocating spindle. The blade's cutting edge is spaced from the line of reciprocation a distance sufficient to permit clearance of the saw with the work surface while the blade is being used to abrade in a direction substantially parallel to the line of reciprocation along the work surface.

Abstract: A slitter-and-hole-punch and quick change adapter combination fits a bag machine or the like for punching holes and slits in a web of film material. A hole punch and a slitter blade are unitarily formed on a base member. Left and right resilient arms extend from distal to proximal, and have free ends that project proximally of the base member. The quick adapter can be an extruded block with a T-channel formed on a lower side with a passage or gap to accommodate the hole punch and the slitter blade. The T-channel has inwardly directed flanges that create side recesses to accommodate the resilient arms of the slitter-and-hole-punch. The side recesses have cooperating hollows to receive detents of the associated resilient arm. The slitter-and-hole-punch can be slid in and out of the T-slot, and when slid in, the detents on the resilient arms keep it in position. The slitter-and-hole-punch can be changed out in a few seconds by hand. The slitter-and-hole-punch units can be color coded, e.g., for gap size.

Abstract: A sheet cutter cuts a portion of a continuous sheet, discharged through a gap between a pair of moving and stationary knives respectively having arc-shaped and straight knife edges. A motor rotates a pair of rotatable, identical gear wheels engaged with each other and opposed to the moving knife and having a pair of respective link arms thereon. Each link arm has a first end connected to a peripheral position of the respective gear wheel by a pivot thereon and a second end connected to the moving knife by a pin inserted into a respective one of a pair of horizontally extending slits in the moving knife.

Abstract: The invention relates to a microtome having a blade oscillating transverse to the direction of advancing the cut, for sections on soft tissue samples. The oscillation frequency of the blade is controlled variably by the rotational speed of an electric motor. At the same time, the oscillation amplitude of the blade is also adjustable variably with the aid of an adjustable eccentric or a displacement device. This makes individual adjustment to the consistency of the tissue sample possible, which leads to improved quality of the microtome sections, in particular to a reduction in the waviness of the sections. This makes significantly thinner microtome sections possible, with corresponding advantages during microscopy.

Abstract: A device for hollowing out food products such as loaves of hemispherically shaped bread for the purpose of using the hollowed out loaf as a bowl for food. The device has a knife for cutting into the loaf and a loaf platform for holding the loaf of bread. The platform and knife are angled so that the cutting action removes a uniform sized conical section of bread from the central region of the loaf. The knife is mounted in restricted manner so that it will penetrate the loaf for cutting of the cone but will not pass through the loaf.

Abstract: A paper cutting apparatus in a small-sized printer for issuing vouchers or receipts having a cutter base with a paper inlet in one side, a fixed cutter installed on an upper surface of the cutter base, and a cutter cover installed on the upper portion of the cutter base to define a space with the cutter base. A movable cutter is installed on an upper side of the cutter base and has an upright shaft pin connected to a driving mechanism. A guide unit is provided at the lower portion of the movable cutter to produce rectilinear movement of the movable cutter. The driving mechanism includes a driven cam installed on the cutter cover and receiving the shaft pin for moving the movable cutter. A compressive unit contacts the upper surface of the movable cutter to apply a resilient pressing force on the movable cutter to keep it in contact with the fixed cutter during the paper cutting operation.

Abstract: The punching blades acts to punch out parts of any desired shape from paper, cardboard, pasteboard, plastics material foils, leather, rubber and the like. In order that an optimum cutting quality can be generated from the start using the punching blade, the punching blade has a cutting edge which comprises a curvature with a radius of from 0.005 to 0.060 mm.

Abstract: A quick release saw blade chuck includes a mounting block, a clamping block pivotally connected to the mounting block, a bolt member extending through a bore in the clamping block, a threaded unit engaging threadably an externally threaded end portion of the bolt member, a rotary lever having a pivot end portion which is pivotally connected to a pivot end portion of the bolt member by a small pivot pin, and a spring for biasing an engaging face of the clamping block to press against a positioning face of the rotary lever. A saw blade is clamped between a pressing face of the clamping block and a bearing face of the mounting block. The rotary lever can be rotated about the small pivot pin so as to remove the positioning face of the rotary lever from the engaging face of the clamping block and so as to engage a camming face of the rotary lever with the bearing face of the mounting block, thereby permitting the spring to bias the pressing face of the clamping block to separate from the saw blade.

Abstract: A continuous paper web is severed transversally in between the transportation cycles at the paper's maximum allowable rate of feed. The transverse cutter device has a stationary bottom blade 6 and a driven upper blade 5 fixed to or integral with a permanent magnet 7a, and a linear motor is used as the drive for the upper blade. The motor stator 7cis fastened to a carrier 4, and the driven blade undergoes reciprocating or vibratory strokes within a stator slot.

Abstract: A modified reciprocating saw blade for use in association with a saw blade holder, shingles and nails, the apparatus comprises a blade member being formed in an elongated planar configuration with an inboard end, an outboard end and a central section, the inboard end being formed as a universal blade mount to permit coupling to a saw blade holder in an operative orientation, the central section having parallel linear upper and lower edges; and the outboard end of the blade member having an upper edge and a lower edge, the lower edge including a cutting region having a length of about one-third of the total length of the blade member, the cutting region including a plurality of cutting teeth, in an operative orientation the inboard end of the blade member being coupled to a saw blade holder, the configuration of the blade member permitting a user to cut nails which secure shingles without damaging adjacent shingles.

Abstract: In contrast to typical machines though, the present invention discloses a device which allows the plate to "float" within the mechanism, so that any inaccuracies in dimensional tolerances between plate and knife are absorbed in a damping of the plate or bed of the mechanism. In this situation, the depth of the cut of the score line can be very reliably controlled, which results in the repeatable manufacturing of a child resistant, yet senior effective package. There is used a spring pre-load for this plate, which is such that cutting takes place yet, as the tool closes, the plate and package come in "metal to metal" contact, assuring "near perfect" cuts of the blister package. Extremely high tolerances are maintained, assuring packages which pass all levels and types of QA testing.

Abstract: A forming apparatus for forming a selected profile in a sheet of material includes a frame, a sheet drive to advance the sheet of material through the frame, a drive assembly for powering the sheet drive, forming rollers to configure the sheet into the desired profile and a shear assembly to cut the formed sheet into desired lengths. The sheet drive includes pairs of coacting rollers with each pair comprising a driven roller connected to the drive assembly and a free-wheeling roller that is adjustably mounted relative to its associated driven roller. The shear assembly has a housing that movably mounts a pair of opposed blade mounts that have facing channels which receive lateral edges of a blade. These channels are wider than the blade thickness so that the blade freely floats and is thus self-aligning between dies.

Abstract: A steel rule cutting die for cutting fixed patterns in a single or plurality of stacked material layers according to the shape of the steel rule. The invention provides for a decrease in the quantity of scrap material produced, by minimizing the amount of gap between adjacent cavities in the steel rule cutting die. Pre-sharpened steel rule is used with the cutting edge shifted to the outboard side of the cavity thus reducing the amount of compression or wedging of scrap material between adjacent cavities, and thus allowing adjacent cavities to be positioned closer to one another or to contact one another without reducing the ability to remove the scrap material after the cutting operation. Frayed scrap material can be evacuated through the base of the die by providing evacuation holes in the base substrate of the die as well as providing for evacuation of scrap material from marker notch locations along joined sections of adjacent cavities. A variety of cavity shapes can be accommodated.

Abstract: The present invention pertains to a device for cutting materials and including a straight blade 10, to which are connected two sharpening units 13, 14 with angulation complementary to that of the cutting edge of the blade. Each sharpening unit 13, 14 comprises a support 15 and defines a chamber 16 for a piston 17 and a pneumatic motor 18 contained in the piston, and has an outlet shaft 19 supporting a diamond disk grinding wheel 20 which is advanced towards the blade to be sharpened.

Abstract: A cutting device for cutting a print carrier in a printer (10), especially in a till printer, has a blade (22) which is movable along at least one guideway (28) against a fixed counterblade (24) and which, in an open setting, frees an opening (20) to allow the printer carrier to be passed through and, in a closed setting, has at least partially cut through the print carrier. The blade (22) can be moved between the open setting and the closed setting by an adjusting mechanism. The blade (22) has at least two guide elements (38), which are disposed at a distance apart on the side facing away from the cutter (42) of the blade (22). The adjusting mechanism (30) engages in the guide elements (38) in order to adjust the blade (22).

Abstract: A variable thickness linear saw design is proposed for enabling maximum reduction of the thickness of the kerf associated with such saws. Typically, such saws have cutting teeth mounted on the leading edge of a supporting plate. In the improvement of this saw, this supporting plate is given two discrete thicknesses relative to the kerf. A first and narrow thickness (relative to the kerf) longitudinal segment is used parallel to and adjacent the supported teeth. This first and narrow thickness longitudinally extending segment only occupies a fraction of less than half and preferably about 20% of the full width of the saw behind the supported teeth. A second and expanded thickness (relative to the kerf) longitudinal segment is used for the remaining width of the saw. The reduced thickness of the narrow tooth supporting section of the saw forms in the case of the linear saws a preferred exit path for sawdust, this preferred exit path being immediately adjacent and behind the supported teeth of the saw.

Abstract: A perforating rule for perforating paper and plastic including a shank portion having substantially planar side surfaces parallel to a central plane therebetween, a cutting portion having a V-shaped cross-section with the narrower end of the V providing a cutting edge, the cutting portion having portions separated by a plurality of notches extending inwardly from the cutting edge toward the shank portion, and an intermediate portion interconnecting the shank and cutting portions having opposite side surfaces extending from the shank portion to the cutting portion. The thickness of the rule at about 0.024 inch from the cutting edge is about 0.014 inches, the notches have a width in the direction of the length of the rule of about 0.007 inches and a depth of about 0.025 inches, and the portions of the cutting portion have a width in the direction of the length of the rule greater than the width of the notches.

Abstract: In an automated machine for cutting cloth or fabric and similar sheet materials the knife is made from a high-alloy tool steel to provide the knife with a sharp cutting edge capable under a given set of conditions to cut sheet material for a far longer period of time before requiring re-sharpening than the case with the knives previously used in such machines. A sharpener is also provided which allows the knife after becoming dull to be returned to a sharp condition while removing only a minimum amount of the knife material, thereby further increasing the service life of the knife.