Abstract: An electromagnetically operable valve having an electromagnetic circuit which includes at least one solenoid coil, a core used as internal pole, and an armature, as well as a magnet housing at least partially surrounding the solenoid coil. The magnet housing is produced from a sheet-metal blank with the aid of rolling or bending. The magnet housing has a middle housing area that is adjoined in the axial direction on both sides by attachment areas which have a smaller outside diameter than the housing area. The valve is particularly suitable as a fuel injector for fuel-injection systems of mixture-compressing internal combustion engines with externally supplied ignition.

Abstract: A punching device for edge decoration having a rotation unit which is capable of punching out a predetermined pattern repeatedly along an edge of a workpiece while accurately rotating the workpiece at a regular pitch is disclosed. This punching device includes a base (18) to which a workpiece is supplied, a jig (15) mounted on the base (18) and having a pattern hole (17) of a predetermined pattern, a punching member (13) formed in correspondence with the pattern hole (17), the punching member (13) passing through the pattern hole (17) to perforate the workpiece, a rotating unit for rotating the workpiece supplied on the base (18) so as to form a diagram in the workpiece by successive punching, and a fixing unit for fixing the workpiece to the rotating unit. A locking unit may be further provided for intermittently locking the rotation of the workpiece executed by the rotating unit.

Abstract: A method of manufacturing an expandable slotted tube fabricated from at least one tubular element and at least two annular elements connected to the opposite ends of the tubular element by means of butt joints wherein axially extending slots are formed at a uniform angular spacing around the periphery of the tube and in longitudinally overlapping relation characterized by cutting said annular elements in a pattern of overlapping positionally fixed slots in accordance with invariable parameters which are pre-determined relative to the dimensions of said annular elements and cutting in said tubular element a pattern of slots that is variable in accordance with measured parameters of the tube so as to achieve the required overlap between said positionally fixed and variable slots. A machine for carrying out the method is also described.

Abstract: A process system and produces metal sheets, including electric sheets, and uses at least one sheet machining unit, particularly a notching device. One or more linear transfer devices or more one sheet stacking devices, one or more sheet feeding unit and one or more sheet removal devices are being configured for stacking at least one sheet metal blank, centering and/or orienting at least one sheet metal blank, (c) at least one of notching at least one sheet metal blanks, separate and/or remove one or more interior sheet metal parts, and deposit the one or more notched sheet metal blanks and/or depositing the one or more interior sheet metal parts.

Abstract: A method for cutting sections from a specimen using a microtome wherein a cutting knife or specimen is advanced by an advancing carriage into a sectioning plane of a disk microtome. The advancing carriage is moved by a motor drive in order to bring the specimen into contact with an area sensor. When the specimen comes into contact with the area sensor, the position of the motor drive is determined and is compared with a stored position of the sectioning plane. The stored position is previously determined by manually locating the position drive motor when the specimen contacts the area sensor. Control signals for the motor drive are calculated from the two position values, and the advancing carriage is advanced into the sectioning plane by the motor drive taking these control signals into account.

Abstract: A process for forming small stacks from an initial stack of sheet material by cutting includes providing a single guillotine cutter machine which comprises a rear table part for receiving the material to be cut and a front table part for receiving the cut material, separating the initial stack into partial stacks by a plurality of cuts in a first direction perpendicular to a direction of feed thereof, and pushing back and rotating 90° at least a portion of the partial stacks from the front table part onto the rear table part for further cutting. The process also includes installing a first movable guide plate above the front table part, placing the partial stacks such that the partial stacks abut the guide plate, and cutting the partial stacks to produce small stacks.

Abstract: The invention relates to a method and device for making a series of cuts at different angles in one or more panels using a panel sawing machine. The method comprises the steps of: placing a stack of panels on a worktable; turning the stack a first time in a first direction of rotation; making a first series of cuts in the stack; turning the stack a second time in a direction opposite to the first direction of rotation and in such a way as to move the stack closer to the cutting line; and making a second series of cuts in the stack. The device comprises: a worktable having a cutting line for a panel sawing machine; a pickup element that moves along a first guide perpendicular to the cutting line; and a pusher element that moves along a second guide parallel to the cutting line.

Abstract: A method of manufacturing an expandable slotted tube (10) fabricated from at least one tubular element (12, 14) and at least two annular elements (11, 13, 15) connected to the opposite ends of the tubular element by way of butt joints wherein axially extending slots are formed at a uniform angular spacing around the periphery of the tube and in longitudinally overlapping relation characterized by cutting said annular elements (11, 13, 15) in a pattern of overlapping positionally fixed slots (27, 28, 29, 46, 37, 38, 39) in accordance with invariable parameters which are pre-determined relative to the dimensions of said annular elements (11, 13, 15) and cutting in said tubular element a pattern of slots (30, 45, 47, 40) that is variable in accordance with measured parameters of the tube so as to achieve the required overlap between said positionally fixed and variable slots. A machine for carrying out the method is also described.

Abstract: An apparatus, system, and method for punching holes at any location along the length of an elongate hollow body comprising an expandable die which is insertable into the elongate hollow body. The elongate hollow body may have any shape and be of any length. In operation, the expandable die cooperates with the punch or punches of an external, conventional punch press. The expandable die self-aligns its die cavity or cavities with the punch or punches of the external punch press. The expandable die can expand to support the elongate hollow body during the punching operation to avoid denting or other damage to the elongate hollow body.

Abstract: A panel sawing machine comprises a horizontal table (5) on which a movable device (6) pushes a stack of panels (3a) in a forward direction (F) or reverse direction (F1) to feed a sawing device (or to a device for rotating the stack) which divides the panel up into two or more smaller boards. The pusher (6) is equipped with two or more pickup elements (16) that hold the rear edge of the stack in position during positioning and/or sawing operations. The pickup elements (16) are mounted on the movable device (6) in such a way that they can run in guides (15, 15a, 15b) in the following three directions, respectively: horizontal at right angles to, and horizontal parallel to, the forward direction (F) or the reverse direction (F1), and vertical.

Abstract: The present invention refers to a processing center for automatic food treatment without human intervention throughout the process. Various food products like vegetables or fruits are placed within the storage compartments of the apparatus and, depending on apriori preprogrammed parameters, are automatically cut in 3 dimensions. The desired 3D cut is obtained by the following cutting steps: 1. Slicing of the product. 2. Horizontal cutting of sliced product. 3. Vertical cutting of sliced product. Various possibilities are established by the above process so as to allow preparation of ready made salads with predetermined size of cut components like onion, cucumber, tomato, radish, banana, apple, orange, melon, etc. The apparatus is equipped with motion converting mechanisms, multimode control and with approppiate computerized control means.

Abstract: In a labeling machine for conical or non-cylindrical containers, comprising a cutting station for cutting a film of labels into segments constituting the individual labels to be affixed to the containers, an apparatus for adjusting the inclination of the label comprising an element anchored to an end of the rotating shaft of a roller for feeding the film of labels to the cutting station, and in said element is screwed a screw actuated from a knob in such a way as to cause the translation of the element and hence the movement of the rotating shaft of said roller for feeding the film to the cutting station.

Abstract: The invention provides an alignment device comprising a surface having a plurality of guides for positioning a card stock for cutting, and arranged in a manner that promotes a logical cutting sequence. The invention is also a method for operating a card cutting alignment system, comprising aligning paper stock using the alignment device, and cutting the aligned paper with a cutting means to produce a business card.

Abstract: For trimming the exposed lateral edges of printed bound documents (4 to 6) conveyed individually or in quires, such as books, brochures or magazines, which are held at the bound lateral edge (23) and conveyed to a trimming device (2) through a rotational and translational conveying movement, the trimming operation of the top and/or bottom edge is simultaneously performed on two printed documents (4 to 6) in a single operation.

Abstract: Disclosed is an improved method of cutting and separating a bent board into individual small divisions. Prior to the cutting and separating of the board into the individual chips the board is cut and separated into two or more pieces each large enough to have a reduced bend, compared with the bend of the board. Thus, each large division can be put and fixedly held on the chuck table of a cutting machine in stable condition, thus permitting the smooth, stable cutting of the large division into final small divisions.

Abstract: A band saw attachment for working in conjunction with a band saw for cutting arcuate panels from a piece of stock. The attachment includes a frame structure and a carriage movably mounted on the frame structure and movable back and forth between selected cutting positions. A rotating support is pivotally mounted to the carriage and pivotally movable back and forth relative to the blade of the band saw. In operation, the rotating support receives and holds a piece of stock and by rotating the support the blade of the band saw functions to cut arcuate shaped panels from the piece of stock.

Abstract: An apparatus for sequentially and automatically cutting a piece of dimension lumber at a number of predetermined angles to produce a building component, such as a rafter or truss web or chord, with composite or compound angles, is disclosed. The apparatus includes infeed and outfeed tables tiltable about a longitudinal axis and equipped with fences along which a workpiece moves longitudinally via moving devices. Clamps hold the workpiece at different positions relative to a cutting station during a cutting operation. A cutter, which for example includes a circular saw blade, is mounted for a positioning movement about a vertical axis at the cutting station, as well as for vertical movement to cut a workpiece at a predetermined composite or compound angle.

Abstract: Method for producing individual dough pieces from a continuous line of dough, in which a row of separate, individually complete contours running diagonally or perpendicular to the longitudinal direction of the line is cut out of the end section of the line of dough, which correspond to the dough pieces, these contours or dough pieces lying in a row next to one another are removed from the end of the line and delivered rotated or pivoted or otherwise positioned for further processing, with the cutting devices that are used to cut out the row of dough pieces at the end of the line being used as a whole or in part to remove and deliver or otherwise position, guide, hold, rotate, and/or displace the cut-out dough pieces, and with the cutting devices being returned to the end of the line after delivery for another cutting-out process.

Abstract: A method for forming a grating suitable for bridge decks using a punch and die, the die having a die opening having a generally cross shaped configuration having a generally vertical or first extent having a top and bottom and a generally horizontal or second extent having a first side and a second side, the distance between the top and bottom of the vertical extent being shorter than the distance between the first side and the second side of the horizontal extent, the opening having a first land and a second land substantially opposite to each other, the first land extending from the top of the vertical extent to the second side, the second land extending from the first side to the bottom, the punch having a cross-section configuration to mate with the die opening to punch the web openings in the web.

Abstract: This invention concerns a saw blade (S) including at least one part with fine teeth (6) and at least one part with grouped teeth (7). The part of the blade with grouped teeth (7) includes a number of groups (4) of, for example, V-shaped indentations (10) in the blade (S), each pair of indentations defining a saw tooth (1). Each group (4) comprises an even number of indentations. In an arbitrary group (e.g. indentations one, three, five, etc.) a first imaginary line A), drawn between alternate tips (11) or base, is a straight line which forms a small angle (a) in relation to the longitudinal direction of the saw blade, the tips or bases being evenly distributed along the line. The invention also concerns a method and a device for producing a saw blade with grouped teeth by means of a tool comprising a punch and a punch die. The punch for cutting out the saw teeth is completely symmetrical and has substantially V-shaped tips. A saw blade blank is fed through the tool and cut in at least two stages.

Abstract: A new type of stator design and arc shaping method that is used in a diametrically wound and diametrical air gap type of brushless motor. After arc shaping, the stator of this brushless motor has an external profile composed of a central arc and two modified arcs located on each side of the central arc. The central arc subtends an angle twice that of angle A and the modified arcs each has a radius r, both angle A and r are given by the following formulae: ##EQU1## Through arc shaping the stator, the cogging torque is lowered while a certain standard value for the torque constant is still maintained. Thus, the overall efficiency of the brushless motor is raised.

Abstract: A document trimming apparatus includes a document trimming mechanism and a document positioning mechanism. The document trimming mechanism includes a trimmer clamp for holding a document made up of a stack of sheets while being trimmed and a knife for trimming an edge of the stack of sheets. The document positioning mechanism includes a transport holder for securely holding the stack of sheets during transport and further includes a carrier movably supporting the transport holder for translational and rotational movement relative to the document trimming mechanism. The document positioning mechanism is adapted to position successive edges of the stack of sheets proximate the knife for trimming. The document positioning mechanism includes a first actuator to control rotational movement, a second actuator to control translational movement, and a third actuator to control a side block for initial positioning of the stack on the document positioning mechanism.

Abstract: The invention provides an electronics board assembly apparatus which includes a base, a slide, an arm, a punch, a bracket, a roller member and at least a first engagement component. The slide is mounted to the base for sliding movement along the base. The arm extends upwardly firm the base and the punch is located on the arm in a position over the slide. The roller member is rotatable mounted to the bracket. Movement of the slide into a first position causes the roller member to come to rest in the engagement surface.

Abstract: Method and apparatus for repetitively making products, such as cap liners continuously from web material. A rotary knife drum having an array of die cutters cooperates with a counter-rotating anvil to thereby define a convergent web working zone therebetween. A pair of servo-motor driven nip feeders feed a web through the convergent work zone of the drum and anvil.

Abstract: The invention is a stator lamination jig system which comprises a centrally located spindle and a support for a stator lamination having a plurality of holes therein. The support is rotatively-mounted on the spindle for driving the lamination during a notching operation. A plate is included to secure the lamination on the support and a non-rotatable ejector is located below the support which has a lowered position and a raised position. An ejection cylinder is seated upon the ejector which is shaped and positioned to extend through holes in the support. The invention also comprises a cylinder connected to the ejector for driving the ejector. When the cylinder is actuated upwards, the ejector is in a raised position which urges the ejection cylinder through the holes in the support to cause the lamination to be released from the jig.

Abstract: A wood cutting device for safely and easily cutting wood veneer strips into geometric shapes for use in parquetry with high precision. The device includes a rigid base having a top surface, a blade handle rotationally attached to the top surface of the base, a cutting blade affixed to the blade handle, and a strip guide attached to the top surface of the base. The cutting device preferably also includes a strip stop attached to the top surface of the base. The device may be pre-set or adjusted to a particular configuration for repeatedly cutting identical geometric shapes with high precision.

Abstract: A measuring apparatus for measuring the thickness of slices taken from biological tissue samples by a microtome. The apparatus integrates a digital micrometer, a drive motor, sensing and control circuitry, and a mounting plate, and is designed to be attached to the top of a Krumdieck or similarly designed microtome for measuring the thickness of slices produced. The apparatus is designed so that the spindle of the micrometer is positioned in vertical alignment with the tissue well and plunger of the microtome. The user initiates downward movement of the spindle by depressing a down switch and control circuitry actuates the drive motor to advance the spindle of the micrometer down toward the top of the plunger until the bottom surface of the spindle contacts the plunger. The bottom surface of the spindle is electrically connected to a power source, and the plunger is electrically connected to the control circuitry.

Abstract: A method and a machine for producing plate components (1) from a sheet of metal (2) which is moved through a press (13) for at least a first cutting operation to be performed to separate the plate components from the sheet of metal and a second cutting operation to separate scrap (27), said press being open with a space (32) allowing free insertion of the metal sheet. According to the invention the metal sheet is displaced by means of a feeding device (11) between the metal working operations, following a predetermined coordinate pattern and being machined in consecutive y-sections (24, 26) each y-section (24) being fully machined in x-direction before the immediately following y-section (26) is brought into position for machining, the metal sheet being machined within surface areas (33), each of which has a length in x-direction of at most 30 cm, and is larger than the plate component so that a peripheral, unbroken scrap portion (27) remains after the first cutting operation.

Abstract: The present invention is a method for producing alignment marks on opposite faces of a generally flat substrate such as a semiconductor wafer. First, reference cuts are produced at the edges of the substrate at four points around the wafer. Next, the center line is determined on the first face of the substrate between two oppositely disposed reference cuts. First and second grooves are then cut in the first face of the substrate a first predetermined distance from the first center line. Third and fourth grooves are cut in the first face perpendicular to and through the first and second grooves at the first predetermined distance from the second reference cut forming crosshair alignment patterns. Next, the center line is determined on the second face of the substrate between the third and fourth reference cuts, and fifth and sixth grooves are cut in the second face of the substrate a second predetermined distance from the second center line.

Abstract: Apparatus and method for removing fibrous material wound around a generally cylindrical shaft rotated about a central longitudinal axis thereof. A cutter blade is provided to have a forward edge portion extending along the central longitudinal axis of the shaft, which edge portion is normally spaced from the shaft to define a non-cutting position. The edge portion of the cutter blade is moved about a reciprocating locus defined by a forward movement from the non-cutting position to a predetermined distance from the shaft effective to define a cutting position contacting the fibrous material, a lateral movement in the cutting position along the central longitudinal axis of the shaft to cut the fibrous material for its removal from the shaft, and a rearward movement from the shaft to return the edge portion to the non-cutting position.

Abstract: A cutter instrument for precision cutting of a corrugated sheet into a precision cut square for edge crush testing is disclosed. The cutter includes a base plate and a pair of cutting blades slidably mounted to the base plate for cutting movement in a direction parallel to a first guide rail. Positioning of the corrugated sheet against the first guide rail allows the sheet to be cut into a longitudinal strip of predetermined precise width. A pair of second guide rails spaced from each other by the predetermined width allows the strip to be rotated 90.degree. and positioned between the second guide rails and respective abutting contact therewith. Movement of the cutter blades along the cutting path completes the cutting of the strip into a precise square.

Abstract: A method and apparatus for cutting tissue sections from an organic tissue specimen to generate multiple tissue ribbons having any desired section sequencing. A three-dimensional microtome which allows relative movement between the tissue specimen and the cutting blade in three dimensions is used to generate the tissue ribbons. Preferably, the three-dimensional microtome also includes an advanceable cutting blade capable of being conveniently advanced in the direction along its length to provide a fresh cutting edge to the cutting area of the microtome.

Abstract: A method for controlling punch strokes of a punch press machine includes the step of performing a first punching operation with a punching tool wherein a sheet of material is in a first preselected position. A second punching operation is then initiated with the punching tool at a variable hover height before the sheet of material reaches a second preselected position. The variable hover height of the punching tool is determined by the distance between the first and second punching operations. If the sheet reaches a predetermined in-position zone before the punching tool reaches maximum hover height, the ram changes direction moving downward. The punch reaches the material just prior to the work piece coming to a stop thereupon performing the next punching operation.

Abstract: A cutting instrument includes a base plate and a pair of cutting blades slidably mounted to the base with a slide block and rail system for cutting movement. A reference rod assembly is provided to maintain the internal flutes of a corrugated paper board in parallel relationship to the cutter blades during cutting to ensure first and second cut edges which are precisely parallel to the flutes. The reference rod assembly comprises two pairs of parallel reference rods which project in a common plane from a key stock plate. The distal ends of these rods, after respectively passing through flutes in the paper board to be cut, are adapted to be received in blind bores formed in a side surface of a guide rail to support the reference rods on the rail. The key stock plate further includes a pair of parallel positioning pins which are received in a pair of bores formed in a side edge of the base plate.

Abstract: A saw apparatus for automatically sawing pieces of material at various predetermined lengths and angles includes a power saw mechanism, a rotatable saw mechanism mounting structure, a motor for rotating the mounting structure, a translational power saw moving mechanism, powered anchoring mechanisms for anchoring the pieces of material during sawing, a mechanism for longitudinally positioning the pieces of material relative to the power saw mechanism for cutting at desired lengths, a power supply and power supply connecting mechanism for delivering power to the mechanism for longitudinally positioning the pieces, to the powered anchoring mechanism, to the power saw mechanism, to the motor for rotating the mounting structure, and to the translational power saw moving mechanism, switches for controlling the flow of power through the connecting mechanism, a computer and program for the computer for operating the switches so that at least one piece of material is longitudinally positioned by the mechanism for long

Abstract: A process and apparatus are provided for transferring material cut in transverse strips and located on an exit zone of an apparatus for the cutting of stacked sheet-like material, to an entry zone of the apparatus for the purpose of cutting such material into longitudinal strips. The apparatus has a cutting table with a table surface possessing a work zone, above which a cutting knife and a press bar are located. An advance device located in the entry zone is provided for the material to be cut. The material present in transverse strips is brought from the exit in zone onto a thin-walled, plate-shaped transport base. The transport base, together with the material, is fed, via at least one table which is arranged laterally of the apparatus and the table surface of which can be arranged level with that of the cutting table of the apparatus, to the entry zone of the apparatus and there, aligned with the entry zone, is removed from the transport base.

Abstract: A method of manufacturing pallets from sheets of substantially the same dimensions as the dimensions of the pallets to be manufactured by the steps of sequentially feeding sheets of a predetermined polygonal shape, cutting substantially at one time a plurality of corner portions of the thus fed sheets to obtain pallets and then discharging the thus obtained pallets. Belt conveyors sequentially feed sheets of a predetermined polygonal shape and cutting dies cut substantially at one time the rear corner portions of the preceding sheet and the front corner portions of the following sheet to obtain pallets and belt conveyors sequentially discharge the thus obtained pallets. When a ruled line, that is, an elongate recess or the like for bending is needed in the resulting pallets, cutting of the corner portions and formation of the ruled line are effected substantially at one time.

Abstract: A device to duplicate a key utilizing the predetermined pitch codes and depth codes of the key to be duplicated, wherein a punch which produces an individual pattern of serrations and a die which makes a pair with said punch are used, a key-holding means which clamps a blank key to be duplicated is moved to the specified position by the use of a pitch code plate and either a depth code plate provided with stair-like codes corresponding respectively to the depth code of the key to be duplicated or a depth code piece whose contacting faces have the width corresponding respectively to the depth code of the key to be duplicated and, by the use of aforesaid punch and die, an individual serration pattern is formed one by one on the blank key mounted on the device.

Abstract: The invention relates to a device for cutting stacked product (25) in sheet form having a table (12), the surface of which has an operating area, above which there is a cutting blade (2) and a pressing beam (3), behind it a feed area to receive the product to be cut and in front of it an output area to receive the cut product, and having a forward feed apparatus for the product to be cut.In order to avoid strenuous mechanical and ergonomically harmful work when turning the product to be cut, in particular in conjunction with the edge trimming of the product, it is proposed according to the invention to provide in the region of the feed area a gripper system (29) for turning the product to be cut in the plane of the table surface.

Abstract: A method of fabricating multiple parts, especially multiple metal parts which are later joined to form an assembly such as a three piece jet engine mounting link assembly with triple load bearing redundancy, from a single workpiece by cutting the workpiece along two mutually perpendicular axes, preferably with an electrical discharge machining (EDM) wire, and electropolishing recast surfaces formed on the parts by the EDM cutting operation.

Abstract: Braided plastic sleeving useful in electronic applications is readily cut by means of a hot wire which is advanced through the sleeving when in flattened form at a controlled rate. It is important that the sleeving be under tension at the location where the cut is to be made. The size of the heated wire and the rate of advance of the heated wire through the flattened braided sleeving relative to the size of the braided sleeving is important to obtaining cutting and sealing of the ends of the braided sleeving without welding the ends shut. Means and method for achieving this is described herein.

Abstract: A log (10) to be sawn into boards is supported by a support assembly (26) which supports the log with its longitudinal axis aligned with the direction of carriage movement of a carriage (22) reciprocating along a defined pathway. A side trimming head (12) is mounted adjacent the path followed by the log and includes first (94) and second (96) spaced-apart circular saw blades oriented so as to make two blind cuts to a predetermined depth into a supported log. An intermediate rotary cutter (104) may be provided between the blades to shape the portion of the log between the first and second blades. A third circular saw blade (14; 107), oriented transversely to the first two blades, cuts the completed board from the log.

Abstract: Method and apparatus for forming a web of uncut thermoplastic articles from a sheet of material and severing the uncut articles from the web of unseparated articles by precisely locating the unseparated articles with respect to a cutting tool and, once located, cutting the product from the web. Male locating pins included as part of the trimmer and spaced a known distance from the cutting edge move forward to engage web deformations. The forward movement of the male locating pin delivers sufficient force to the deformations to center them on the male locating pin. Continued forward movement forces the other side of the deformation into contact with a female locating pin included as part of the die and spaced the same known distance from the die edge. The female locating pin grabs the deformation to place the sheet in the desired location.

Abstract: Two shearing blades disposed along two lines which intersect each other are carried on the bottom edges of two adjacent walls of a four-sided ram structure. The ram is supported at four points whereby to provide greater stability. The workpiece is carried on the aligned top surfaces of a fixed bed and a movable carriage. The movable carriages is movable in a first direction. Finger grippers, joined by a connecting bar, are movable in slots along the top surface of the movable carriage in a second direction. Thus, the workpiece is moved in the first direction by movement of the movable carriage and in the second direction by movement of the finger grippers. The workpiece may be precisely and accurately positioned under the shearing blades making use of sensors in each of the finger grippers and a lateral sensor at the end of the movable carriage.

Abstract: A building construction element such as insulative siding is disclosed having an outer skin with an inner surface on which a plurality of individual, spaced-apart, arcuate-shaped projections are cut or gouged from the inner surface by a cutting tool means. A low density polymetric foam material is disposed over the inner surface so as to completely surround each arcuate projection to thereby securely lock the skin to the foam material after it sets.

Abstract: A method of and an apparatus for the cutting of rectangular windows on mats provides a pair of blades on respective tracks which are simultaneously displaced to cut a pair of mutually perpendicular cuts in a blank positioned on a worktable. The blade carriages are actuated by pneumatic cylinders and in turn carry pneumatic cylinders for raising and lowering the blades. The margins of the mat are defined by adjustable bars whose perpendicular distances from a reference point, represented by the junction of the paths of the cuts, can be set.

Abstract: A method and apparatus for simultaneously cutting a plurality of picture frame mats with picture display windows in a single operative procedure by initially arranging the mats in a reverse and inverted order and cutting them with an apparatus mounting a plurality of cutters, one for each mat, at an angle to the planes of the mats and thereafter separating and rearranging the mats to frame the picture in their desired picture frame array.

Abstract: During the parallel splitting up of workpiece panels, in particular, consisting of laminated, compressed wood, it is usually not possible to prevent one of the two panel sections resulting after completion of the last separating cut, more particularly, that which was clamped in the feeding device, from warping on account of material tensions, thereby rendering it useless. In order to avoid this, it is proposed that the trimmed edge of the last remaining panel section facing away from the cutting plane be released prior to the final feeding procedure to be carried out, that it be clamped again immediately thereafter, that a further trimming cut be made on the panel section, and that this panel section then be fixed following the final feeding procedure and trimmed anew. In this process, the last resulting panel section is relieved of tension before being finally trimmed along its two longitudinal sides. This ensures that the trimmed edges subsequently produced thereon are exactly parallel to one another.

Abstract: A punch press which has an X-Y guidance system for moving the workpiece relative to the workstation also includes means for rotating the workpiece on the worktable upon release of the workpiece from the X-Y guidance system. In this fashion, the workpiece may be rotated into a reoriented position and then reclamped in that position within the X-Y guidance system. This press includes a tool mounting means on the head of the press and means for effecting reciprocal motion of the tool mounting means along a vertical axis and rotation of the tool mounting means about that axis. Generally, the press will also include a die assembly in the base which includes at least a portion which is rotatable about the same vertical axis so that the workpiece when gripped therebetween may be freely rotated in a fixed clamped position to effect the desired reorientation.

Abstract: A method of opening an envelope along three edges, in which the envelope is moved to an opening or edge removing device along a supply path, one edge being guided along said device for cutting open or removing the edge. Next, the envelope is rotated through 90.degree. to be subsequently guided again along the opening or edge removing device for opening the second edge, which cycle is repeated for the third edge. An apparatus for performing this method includes a housing having an inlet path leading to the supply path along which the opening or edge removing device is arranged, a first set of members for moving and guiding the envelope co-extensively with the inlet path, and a second set of members for moving and guiding the envelope in a direction perpendicular to the inlet path along the opening or edge removing device, and a third set of members for guiding and moving the envelope along a quarter-circular path, which returns the envelope, turned 90 degrees, to the first set of members in the inlet path.