Abstract: A device for producing perforations in a flexible rack. With mechanical drive systems a "rack" is a linear element used with a rotary element whereby linear and rotary motions are displaced. The flexible rack processed by this invention consists of a tape having a cross-sectional curvature. It is thin, rigidly straight, resilient and used for "interconverting" (mutually converting or equally displacing) linear and rotary motions. A method is taught for perforating a rack along its length. Perforations are produced whil the rack is bent radially and flattened laterally corresponding to a position with which the rack will be used when "interconverting linear and rotary motions.

Abstract: A paper punch which has a body defining a gap for insertion of the material to be punched and has at least one punch hole at the bottom of the gap and includes guides for guiding a punching element across the gap into the punch hole, also includes at least one cylindrical punching element which is disposed to be guided into the punch hole and has a cutting end with a cutting edge which extends helically along at least one-half of the circumference of the punching element. Preferably the punching element is hollow and is formed from a shaped sheet of metal.

Abstract: A portable stationery device having a punching device disposed in a lower portion of a holder and a stapler disposed in an upper portion of the holder above the punching device. The stapler can be freely drawn out from or retracted into the holder. When the punching device is used to punch a sheet of paper a punching rod of the punching device is pressed by the stapler.

Abstract: A corner cutting machine for notching corners out of plate stock located on a work table by means of upper and lower knives arranged at an angle to form a V-shaped cutting edge. Work piece stop and positioning edges are mounted to adjustment heads which are mechanical for remotely controlled motor driven longitudinal movement in converging slots provided in the work table and rotary movement relative to the work table.

Abstract: A punch main body, consisting of a base portion and a support portion, is formed from one or two extruded profiles, for example of aluminium. Respective end plates, for example of moulded plastics, are preferably fitted to the ends of the profile (5) to maintain overall strength and rigidity so that the thickness of the extruded material can be reduced. A pivotal press bar, which may also be an extruded profile, is effective to move cutting tools downwards through openings in the punch main body. The length of the extruded profile (5) and the positioning thereon of the openings for the cutting tools can be varied without the need for new production moulds, thereby simplifying and reducing the cost of production of a range of different sizes of punch.

Abstract: A method of punching cylindrical tubes with openings from the inside to the outside. In accordance with the method, the punching apparatus includes a mandrel that slidably supports the dies and a backup die that includes a slug ejecting punch which serves the dual function of ejecting the slugs from the backup die and also retracting the punches.

Abstract: Frame members of the apparatus mount cutter assemblies that are aligned by relative adjustive movement of the frame members with edges of a cutout that is to be cut from sheet material. The adjustive relative movement of the frame members additionally effects adjustment of the relative positions of the cutter assemblies and associated cam members also carried by the frame members. This in turn causes the cuts made by the cutter assemblies to be of the same length as the therewith aligned cutout edges. The apparatus preferably further includes clamping members that engages the sheet material during each cutting operation, and drive components for imparting desired motions to the various movable components of the apparatus.

Abstract: A device for manual hole punching of sheet material is made up from extruded profiles, one forming a cover (1), which is movable towards a bottom part (2) formed from two combined sections (7,8). The cover carries punches (22) running in holes (23). A counter-acting spring bias is obtained by spring means (25) inserted between the cover and bottom part.

Abstract: A hole punch assembly for punching holes in papers and such, usually having dual spring-loaded punch units attached to a base member. The punch assembly is constructed from formed sheet steel and includes a rectangular-shaped base member having two spaced-apart rectangular shaped depressions and openings therein, each for receiving a spring-loaded punch unit rigidly attached to the base. The punch unit includes a frame folded to provide a gap through which a punch rod is extended through a hole, the frame enclosing a compression spring located around the punch rod and a spring-retaining shoulder ring is provided in a groove located between the frame and the upper end of the compression spring. The punch unit is rigidly attached to the base member so that the gap has its lower surface flush with the upper surface of the base member, to allow paper stacks or paper sheets for punching to be guided into the gap without any obstructions or hang-up.

Abstract: A double duty paper punch for punching selected combinations of holes in up to fifty sheets of paper comprises a die-cast base with a steel die plate of angle cross section seated on the base with a downwardly projecting flange received in a recess in the base. An elongate punch holder, also a die casting, has a rear portion seated on a rear portion of the die plate and a forward portion spaced upwardly from the die plate to receive the paper to be punched. Rivets through aligned holes in the punch holder, die plate and base secure these parts together. The punch holder has a plurality of punch-receiving bores aligned with holes in the punch plate and base selectively to receive individual punches, each having a stem and a head with a spring acting between the head and the punch holder to hold the punch in raised portion.

Abstract: This specification discloses a compact press tool which is capable of accommodating eccentric loadings without jamming or causing hydraulic fluid leakage.Specifically the press tool (1) comprises: a stationary element (2), a movable element (3) and an hydraulic ram (5) adapted to translate the movable element (3) relative to the stationary element (2). The hydraulic ram (5) has a first piston (7) fixedly connected with the stationary element (2), a second piston (9), axially spaced from the first piston (7), able to bear against the movable element (3), and a floating cylinder (10) sealed at one end by the first piston and at the other end by the second piston (9).

Abstract: A hand-operated punch is formed of molded parts which interfit for easy and rapid assembly and disassembly. This feature is particularly useful if there are paper jams. A handle hooks under a wall of the base. Depressing the handle forces downward a transverse bar recessed to accept the upper ends of the male punch elements, which are spring-biased to travel with the transverse bar. The punch elements reciprocate within a die bar detachably connected to the base. The die bar is formed with a throat for insertion of papers to be punched. The front edge of the base is formed with a transverse groove to accept a male binder element during assembly of a book comprised of the punched paper.

Abstract: A flexographic printing plate (80) having register marks (82) thereon is supported on the surface (16) of a support table (15) which is capable of being rotated about a central vertical axis. The register marks are viewed by an optical viewer television camera (84) and displayed on a video screen (28) on which are also projected sight marks (86, 87). The operator adjusts the rotational position of the table until the register marks on the plate align with the sight marks. The plate is then punched using a punch unit (24) to form a series of holes (89) in the plate (80) which defines a line either parallel or perpendicular to the axis of the images (81) on the plate. The punched plate is then laid on the top surface of a mounting table (91) of a mounting unit (90) and pins (93) are inserted through the holes in the plate into holes (92) in the table surface.

Abstract: Apparatus and method for duplicative notching of the serration edge on a key blank according to the serration edge of an existing key serving as a templet. An axially movable key edge notching punch is controlled by the templet for punching a notch in the serration edge of the key blank corresponding to a notch in the serration edge of the templet when the punch is driven toward the key blank. The key blank and the templet key may be supported in a cassette which is indexible relative to the punch. The cassette and the notching mechanism are especially advantageous for notching the serration edges of key blanks carried by wallet size plastic cards.

Abstract: The cutting device for crested cutting of fruits and the like has a plurality of V-shaped knives (14) arranged in star arrangement around a fruit holder (18). These rest movably on roof-shaped guide surfaces (20), are reinforced by guide members (20) and through them are connected with catches (24). Countersurfaces (at 26, 30, 32) to guide surfaces (20) are found on one or both outside housing parts (10, 12) and hold knives (14) in position on guide surfaces (20). Catches (24) engage in spiral grooves in rotatable top housing part (12).

Abstract: In order to drive a punching machine electrically, with the aid of a double-armed rocker (70) a translational motion for the compression beam (10) is generated on the one hand, and a rotary motion for an opposing drive on the other hand. On the one side, the double-armed rocker (70) is driven by a rotating clutch shaft (50) by way of a crank gear (60-66) and, on the other side, a chain link (73) serves to control the compression beam. The opposing drive is operated by means of a one-arm rocker (75) and, also, by means of a chain link (76). To ensure the execution of an exact cycle, an engaging and disengaging claw clutch (31, 36) is present. The cycle is maintained by a cam disk arrangement (51) on the one hand, and a coupling groove (37) on a coupling box (32) with a coupling bolt (38), on the other hand. The above provides the electric drive for a rectilinear punching machine for punching sheets of paper for mechanical binding systems.

Abstract: A workpiece processing machine comprises a stationary main frame 10 with at least one main processing plane G. On the one side of this main processing plane there are arranged worm shafts 15, 16, 17 and 18 extending with their axes substantially parallel with the main processing plane G, mounted in the stationary main frame 10 and connected for drive with one another. On the other side of the main processing plane G there are provided securers for the securing of processing units 25 on the stationary main frame 10. To each worm shaft there is allocated at least one main power take-off position 15a, 16a, 17a, 18a for the drive connection of a processing unit 25 with the respective worm shaft 15, 16, 17, 18 through a worm wheel, meshing with the worm shaft, with worm wheel axis perpendicular to the main processing plane G. At least three worm shafts connected for drive are arranged along mutually adjoining sides of a polygonal line.

Abstract: A punching and shearing machine in which a single hydraulic cylinder (1) operates alternatively the punch or the shear of the machine. When the punch is operative, a manually operated eccentric lever (16) blocks the shear carrying member (8) so that the stem (6) of the piston in the hydraulic cylinder (1) causes motion of the punch carrying member (3). If, on the other hand, the shear is to be operated, another manually operated eccentric lever (14) blocks the punch carrying member (3), so that the external part of the hydraulic cylinder, which is connected to the shear carrying member (8), causes the motion of the shear carrying member only. Safety micro-switches are provided to interrupt the hydraulic circuit controlling the cylinder (1), if the eccentrics (14, 16) are both free or both are blocking a tool carrying member.

Abstract: The present invention relates to a punch press having a frame having an overhead beam and base portion, a vertically movable ram mounted at a front end of the overhead beam, a tool holder having upper and lower arms and being disposed on the base portion of the frame with a gap between the tool holder and the overhead beam, a plurality of upper punching tools disposed at a front end of the upper arm of the tool holder, a plurality of lower tools corresponding to the upper tools and disposed at a front end of the lower tool holder, a striker mounted on the ram so as to hit each of the upper punching tools and a workpiece feeding and positioning device disposed on the tool holder. The elements of the invention are arranged such that vibration and shocks occurring during the operation of the ram are not transmitted to the workpiece feeding and positioning device, and the punching tools.

Abstract: A perforator of enhanced performance is disclosed which comprises a punch and a perforation jig comprising upper and lower oblong sheet retainer plates adapted to hold paper sheets, so that in the course of perforation, the perforation jig will retain the punch fast in position with respect to the paper sheets and prevent the punch from being shaken in the vertical direction relative to the perforation jig. The perforator of this invention is constructed so that when the front portion of the punch is abutted against the upper sheet retainer plate forming part of the perforation jig, a punch-supporting member of the lower sheet retainer plate protruding outwardly from the upper sheet retainer plate advances into a recess extended from the front side to the rear side of the punch adapted to receive insertion of paper sheets and, consequently, the perforation jig is allowed to hold the punch safely.

Abstract: A punch press (20), for punching a workpiece, utilizing an elongated punch support which is formed from removable interconnected punch cartridges (92) and an elongated die support which is formed from removable interconnected die cartridges (94). A punch head (32) is supported from a frame (30) which spans the punching area. A two axis positioning system is provided for positioning the sheet metal workpiece within the punching area beneath the punch head. Punch head (32) through appropriate mechanical interposer (160) engages a punch which in conjunction with an associated die, positioned there beneath, forms a hole in the workpiece. The elongated punch sections (92) and die sections (94) can be moved out of the punch press frame, disengaged and removed or replaced. The first punch section (92) and first die section (94) engage driver sections (192, 194) which are disposed in the frame (30). The driver sections (192, 194) are then moved to bring the tool supporting sections (92, 94) into the press.

Abstract: A large punch for piercing a thick bundle of sheets of paper at a time. A gear mechanism is operationally associated with a handle to move vertically a pair of paper holding plates cooperating with a pair of cylindrical piercing blades provided on a base, and thereby reduces the force required for moving the handle for the piercing operation. A base plate, which has a pair of holes each defining a passage for one of the piercing blades, is vertically rotatably supported on the base, and is normally biased upwardly to facilitate removal of the piercing blades from a thick bundle of sheets of paper after it has been pierced. The piercing blades and the paper holding plates are removably attached to the base and the gear mechanism, respectively, so that both of them can be easily changed to new ones if required.

Abstract: Semi-automatic device which makes it possible to produce cylindrical cavities, according to a given geometrical arrangement, in a layer of gelled material, the said device consisting of a set of several individual devices each of which, as shown in FIG. 1, consists of a cutter inside which a suction tube slides, it being possible for a pressure reduction to be created in the said suction tube.

Abstract: The present invention relates to a punch for office use for making a pair of holes at first or second predetermined spaced apart distances in a card, or like paper to be punched by a pair of punching blades. A pair of right and left blade supporting members each support a punching blade. Each of the punching blades has a longitudinal axis that deviates from the longitudinal axis of the blade supporting member. A punch for either narrow or wide punching can be manufactured by changing the right and left positions of the pair of right and left punching blade supporting members.

Abstract: Fibrous board transition parts are produced on the job site from standard lengths of preformed fiberboard duct units. Transition parts are interposed between linear runs of duct pieced together to change direction of the duct work. The transition parts, sometimes referred to as elbows or bends, can be easily fabricated on the job site by modifying standard lengths of preformed linear duct by cutting and removing pie-shaped sections from the duct. The modified duct can be bent inwardly to form a one-piece arcuate transition part wherein the outer wall section remains intact and provides structural strength to the transition part. The seams are secured with structural adhesive tape wrapped around the transition part.

Abstract: A needle and syringe destructor is disclosed having particular suitability for the destruction of hypodermic syringe needles, of the single-use variety, immediately after use. The needle, and a portion of the syringe barrel, may be simultaneously severed in a single motion by means of the operator actuating a lever arm means. The lever arm means is linked to a pair of guillotine shears effectuating severance with increased mechanical advantage to the operator. Severed portions drop to a storage chamber. Remaining syringe barrel portions may then be discarded into the storage chamber through a movable closure lid providing separate access to the storage chamber. The severed needle and syringe are destroyed to prevent re-use and accidental injury to medical personnel.

Abstract: A punch press having a punch holder and a die holder rotatably mounted on vertically spaced upper and lower plates, respectively. A punch and the corresponding die are held in the punch and die holders, respectively, for rotation therewith. The punch is cooperable with the die to machine the workpiece positioned therebetween when a predetermined angular attitude of the punch relative to the die is maintained. A detector is provided for checking whether the predetermined relation in angular attitude between the punch and the die is maintained when they are in their home positions and when they are angularly displaced from their home positions. Preferably, the upper and lower plates are arranged into upper and lower turrets rotatably holding a plurality of circumferentially spaced punch and die holders, respectively.

Abstract: A paper fastening device comprises a punching mechanism with punching depression members in vertical motion, a stapling mechanism with depression members for pushing out the contained staples and fastening papers together, a depression mechanism with pressing parts for depressing the depression members in said punching and stapling mechanisms, a selecting mechanism for selecting the interlocking of the pressing parts with said depression members by sliding said pressing parts, and a selection indicator in association with said selecting mechanism. Selection of punching or stapling or both thereof is effected at the indicator, and then the depression mechanism is operated, thereby the selected punching and/or stapling are applied to papers.

Abstract: The die set for sizing sections includes a movable block and a stationary one, both blocks having cutout portions receiving a sizing die, movable knives and stationary knives forming a jig secured to the stationary block, the jig having made therein communicating channels arranged in accordance with the contour of the section, the jig further having grooves perpendicular to the channels for receiving the movable knives and interacting with the inclined surface of the cutout portion of the movable block.

Abstract: A method and apparatus for acting on angle irons or the like. A vertical stack of angle irons is provided and the angle irons are fed one at a time to a punching position. At the punching position a hole of selected size is punched in the angle iron, and the angle iron is fed from the punching position in a linear direction of movement to a cutting position. The length of the angle iron to be cut is determined by measuring the length of angle iron in the direction of movement past the cutting position, and the angle iron is cut at the cutting position. Cutting is accomplished using a crankshaft with at least one cutting blade operatively connected to the crankshaft at a portion thereof offset from a line between the bushings, guide structures being provided for guiding the linear movement of the cutting blade. Each cut angle iron is removed from the cutting position in a direction normal to the linear direction of movement of the angle iron to the cutting position.

Abstract: A turret type punch press which has a plurality of strikers is disclosed. The punch press comprises a turret mechanism, a plurality of large-diametrical punches radially spaced along a main circular track of the turret mechanism, a plurality of small-diametrical punches spaced along a plurality of subtracks centering around points on the main circular track between every two adjacent large-diametrical punches, a main striker provided in the lower end of a ram to correspond with the large-diametrical punches and a plurality of substrikers provided circumferentially along the main striker to correspond with the small-diametrical punches. The main striker and the substrikers are selectively operated according to selection of the punches.

Abstract: Shaped and self-supporting stratiform laminates, such as inner door panels for automobiles, are produced from a thermoplastic substrate and a flexible sheet material in a one-stroke molding, laminating, and cutting operation; laminated products obtained have protruding free edge portions of the flexible coating sheet so that cut edge portions of substrate can be covered subsequently with the protruding free portions.Apparatus for producing such laminates is a molding press having two molding plates, each of which includes one component of a pair of cutting means; the other two components of the pair of cutting means are provided by a generally annular element that is movable relative to the molding plates; the annular element includes a surface for cooperation with a peripheral knife around the surface of the upper molding plate to form one cutting means, and a cutting edge for cooperation with a shearing edge of the lower molding plate to form the second cutting means.

Abstract: There is disclosed a punch change mechanism for a double pressure pin press or the like having a reciprocating press carriage and a punch holder plate swingably mounted thereon. The punch holder plate is driven by plate cams rotated by the main drive for the press through a gear train. The gear train includes a driven elongated first spur gear mounted on fixed structure against axial movement with respect thereto, and a second spur gear rotatably mounted on the carriage for reciprocation therewith parallel with the axis of the first spur gear and in constant mesh therewith, the second spur gear being fixedly connected to a shaft journalled on the carriage and having the cam plates fixedly mounted thereon.

Abstract: Apparatus for trimming the front, head and foot ends of brochures has a stationary platform which supports one brochure at a time. A first knife which trims the front end of the brochure on the platform descends in a vertical plane ahead of two additional knives which thereupon simultaneously trim the head and foot ends of the same brochure as soon as the first knife completes the trimming of the front end. The first knife is pivoted forwardly and away from the additional knives while the additional knives move toward and trim the brochure on the platform. This insures that the first knife is held out of the way while the additional knives move to positions in which their forward ends extend beyond the trimmed front end of the brochure.

Abstract: An apparatus for simultaneously forming a plurality of terminals from a plurality of lengths of wire and inserting the terminals simultaneously into preformed openings in a plastic part. The apparatus includes a mechanism for simultaneously moving a plurality of lengths of wire which are held in spaced relation to one another to a severing position. The wires may be arranged in both horizontal and vertical planes. At the severing position, a shear is provided for simultaneously severing end portions from the lengths of wires to form a plurality of short wire terminals. The shears and an anvil support the terminals and maintain them in spaced relation to one another after severing for insertion into the preformed openings in the plastic part. The apparatus further includes a tool which supports the plastic part. A slide moves the plastic part and the terminals into engagement with one another to thereby embed the terminals in the preformed openings of the plastic part.

Abstract: A flying panel cutoff and punching machine which punches holes in a panel while that panel is being cut from a continuous length of material in a slugless manner. A camming arrangement drives a punch vertically downward while a shearing blade executes the downward and sideways movement used to cut off a panel in a slugless manner from a continuous length of material.

Abstract: Described is a hand punch which can be constructed in a narrow compact form and of few and simple parts. It includes a narrow base formed with a plurality (e.g. two) punch pin openings in a straight line along the length of the base, a pair of lever arms pivotably mounted at opposite ends of the base on pivotal axes parallel to the width of the base, and punch pins received in openings in the lever arms and arranged such that a manual force applied to one of the lever arms to move same towards the base, also moves the other lever arm towards the base, and the plurality of punch pins through the openings in the base. The base is preferably constructed of a multi-leg channel member elongated in the direction of its length, the channel member having four spaced legs, the lower two of which define a compartment for receiving the paper chips, and the middle two of which define a slot for receiving the paper sheet to be punched.

Abstract: A single fluid power operated piston connected to a tool operating arm pivoted intermediate its opposite ends, undergoes movement through a predetermined stroke between limit positions to alternately perform punching and shearing operations at spaced stations along a common support bed of a metal working machine. The tool operating arm is held in one of its limit positions by the piston device under control of a selector valve while a foot pedal operated valve is displaced against a spring bias by the operator to effect powered displacement of the piston device to the other limit position in order to effect either a punching or shearing operation depending on the position of the selector valve. A shearing operation may also be performed through a second shear arm pivotally connected to the frame and actuated by the piston device.

Abstract: An apparatus for simultaneously forming a plurality of terminals from a plurality of lengths of wire and inserting the terminals simultaneously into preformed openings in a plastic part. The apparatus includes a mechanism for simultaneously moving a plurality of lengths of wire which are held in spaced relation to one another to a severing position. The wires may be arranged in both horizontal and vertical planes. At the severing position, a shear is provided for simultaneously severing end portions from the lengths of wires to form a plurality of short wire terminals. The shears and an anvil support the terminals and maintain them in spaced relation to one another after severing for insertion into the preformed openings in the plastic part. The apparatus further includes a tool which supports the plastic part. A slide moves the plastic part and the terminals into engagement with one another to thereby embed the terminals in the preformed openings of the plastic part.

Abstract: A mechanical press having twin working stations comprising a bed, a pair of bolsters mounted on both sides of said bed, four uprights extending upwardly from said bed, a frame structure mounted on said uprights, said frame structure having a pair of guide portions defined at both ends thereof, and a pair of slides slidably mounted in the respective guide portion of said frame structure, each of said slide structures being adapted to face with each of said bolsters.

Abstract: A sheet punching machine comprising a support for the sheet to be punched and a punch carrier carrying a multiplicity of punches, together with means for forcing the punches through the sheet; said means are so arranged as to press the punches successively, one after the other, through the sheet, and return means are provided to return to their starting position the punches which have passed through the sheet. The means of forcing the punches may comprise two parallel endless chains mounted on two pairs of coaxial toothed wheels fixed in rotation in pairs, at least one transverse shaft fixed to the two chains and carrying a working roller and two running rollers, and two rectilinear support surfaces for the running rollers, the punches being axially movable at least approximately perpendicularly to the trajectory of the rollers and having a part which intersects the horizontal path of the working roller when the running rollers run on the said support surfaces, the return means for the punches being elastic.

Abstract: A tubing cutoff die having a horizontally moving scarfing blade and a vertically moving cutoff blade. The tubing being cut off is held in clamping jaws movably mounted on the lower die shoe of the die and actuated by a cam extending from the upper die shoe. The scarfing blade is also mounted for horizontal reciprocation on the lower shoe and actuated by another cam fixed to the upper shoe. The cutoff blade is mounted on the upper die shoe. The two die shoes are reciprocably connected by post and bushing arrangements. There are three of these disposed so that the centerlines are at three of the corners of a rectangle. One of the clamping jaws is mounted on a holder reciprocably mounted on the lower die shoe and the other jaw is mounted on a second holder reciprocably mounted on the first holder. The mounting for the cutoff block provides for either of two rigidly located positions, for different tubing sizes, and the scarfing blade is also adjustable.

Abstract: A device for preparing a flat multi-conductor ribbon cable, having a plurality of conductors of circular cross section, for termination into a flat cable connector. A pair of meshing cutters, at least one of which is movable, are engaged with the ribbon cable between them. The cutters shear the cable webs, joining the individual conductor insulating jackets for a predetermined lengthwise distance along the flat cable, the individual blades of the cutter being configured to shear webs between adjacent conductors or alternatively between the web separating groups of a predetermined number of conductors. Each blade of each cutter has at least one concave depression engaging the individual round conductors to stabilize them during the shearing operation. At least one of the meshing cutters has a convex curvature in a plane parallel to the lengthwise dimension of the ribbon cable to minimize the required shearing force and hazard of cable damage.

Abstract: Punching device for punching paper comprises a frame, a cooperating base supporting the frame, a plurality of individual punches removably and changeably mounted in the frame and an operating handle for actuating the punches. The frame is made of a single sheet of metal which is bent to form a U-shaped punch holding section comprising an upper portion, a lower portion and a portion connecting the upper and lower portions at one side and a die section which is joined with the lower portion of the punch holding section by a fold line and underlies such lower portion with an intervening space to receive the material to be punched. The upper portion and lower portion of the punch holding section have aligned bearing holes removably to receive and guide spring biased punches and the punching section has aligned punching holes to receive the lower ends of the punches when actuated by the operating handle.

Abstract: The assembly is for shearing rod sections with a movable cutter carriage carrying a shearing blade between a resting position and a shearing position. A reciprocating impact head is used to drive the cutter carriage. The impact head is moved into contact with an adjacent end of the cutter carriage to effect motion of the cutter carriage to the shearing position. The cutter carriage is biased toward the impact head and the resting position to effect the return stroke motion of the cutter carriage. The contact of the impact head with the adjacent end of the cutter carriage is broken on completion of the return stroke to draw the impact head a predetermined distance back to a starting position from which the impact head is ready to strike the adjacent end of the cutter carriage with considerable momentum upon the starting of the next shearing cycle.

Abstract: A machine provided with a bed on which is mounted a frame having an explosion chamber communicating with the space of a power cylinder whose plunger supports a punch, an anvil block located opposite to the punch and carrying a die arranged coaxially with the punch, and a device for returning the plunger to the initial position. The frame and the anvil block are rigidly secured on the bed, the space of the power cylinder is open at both ends and a hole providing communication between the space, the explosion chamber is located substantially in the middle of the length of the space, the plunger supporting the punch and a second similar plunger with a second punch being installed in the space opposite to the axis of the hole while a second anvil block is rigidly installed on the bed opposite the second punch symmetrically with the first anvil block relative to the same axis, the second anvil block being rigidly connected to the first anvil block and carrying a rigidly-secured second die.

Abstract: A partition slotting machine having a punch and die assembly built as a unit to be separable from the machine for repair, replacement and adjustment of punch, die and operating parts away from the machine, so that the machine may continue operating by installation of a substituted pre-assembled punch and die unit during such servicing. The separable unit includes the die bed with dies adjustably positionable thereacross, a press head movably connected to the die bed and containing punches adjustable positioned thereacross to mate with the dies, and parts of a press head moving mechanism involved in adjusting the position of the press head relative to a drive shaft on the machine which drive shaft is coordinated with other machine functions.

Abstract: Adjustable cutting angle shearing machine for laminates comprising a pair of shoulder members of substantially C-like shape. The upper ends of the shoulder members are hinged to a supporting frame along a vertical axis. There are provided guides in the shoulder members extending parallel to the shoulder member hinge axis for the sliding movement of respective movable cutter supporting plates whereon the cutters are arranged so as to define an angle the apex whereof is aligned with the hinge axis. Actuating means are provided for lowering and raising the movable cutter supporting plates and an angular position adjusting means for the shoulder members.

Abstract: A machine for sawing a plurality of spaced L-shaped slots through a stack of paper sheets starting from one edge surface of the stack, which slots are adapted to receive a device for binding the stack of sheets together. The machine includes a plurality of elongated saw blades having cutting teeth all around their peripheries and mounted side by side in spaced parallel relationship. The machine reciprocates the saw blades along their longitudinal axes to afford cutting engagement with the blades by the stack of sheets from any direction normal to the axes of the blades; while moving a planar support surface disposed normal to the axes of the saw blades and to which the stack of sheets is clamped in an L-shaped pattern to engage the stack of sheets with the saw blades and cut the L-shaped slots.

Abstract: A machine for punching and subsequently binding packets of sheets to book form with wire binding elements comprises a punch and a press connected to, and driven from a common operating member through a mechanical drive, the mechanical drive being so arranged as to move the punch through a shorter distance and at a higher mechanical advantage than the press.