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 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: 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 punching unit in a punching binding machine for joining together packs of sheets by a resilient teeth comb binder, comprises on a framework of the machine: a fixed bar provided with openings having a substantially vertical axis; a plurality of punches, each of which extended through the openings and each comprising a bottom cutting edge and a tang extended at the top of the bar; a movable bar arranged at the top of the fixed bar and carrying a series of catches, each of which movable between an active position for operating the relative punch, and a rest position where such a punch is not thereby operated; the movable bar being supported on slides sliding on the framework; a control assembly for the lowering of the movable bar on the fixed bar.

Abstract: An improved multi-hole punch is provided in which the vertical distances between the lower ends of a multiplicity of rod cutters are gradually increased from one end to the other end of the lateral row in which the plurality of rod cutters is arranged. Thus, the rod cutters plunge into paper sheets supported on the base of the punch sequentially in the direction in which the vertical distances of their lower ends from the aforementioned portion of the base increase.

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 lever operated sheet punch device having recesses to receive portable die mounts which mounts can be readily removed or replaced. When mounts are placed in the recesses, alignment means both on the mount and the recesses function to align and position the mounts in a selected position. To inactivate a mount it can be removed or its configured die head turned to a position where the lever will not operate it.

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: In a method of and apparatus for punching a set of exposed films to obtain punch registration, two magnified images of respective areas of film are projected onto respective screens of two independently movable projection units so that either the magnified images of portions of image areas of two superimposed films can be brought into alignment on the screens or register markings on, or portions of the image areas of, each film in succession can be brought into alignment with respective markers on or adjacent the screens.

Abstract: A base defining an upwardly facing sheet supporting surface and an elongated support member is mounted on the base and projects upwardly from the sheet support surface. The support member includes spacer structure spacing portions of the support member from the base to define an open slot between the base and the spaced portions of the support member. A pair of aligned support blocks are supported from the support member above the opposite end portions of the slot and an elongated head extends between and is removably journaled from the support blocks. The portions of the support member spaced above the base define upstanding sleeve bores therein normal and opening into the slot and bearing sleeves are mounted in the sleeve bores and have elongated punch members reciprocately disposed therein. The base defines die bores below the slot and opening into the latter aligned with the sleeve bores. Die sleeves are disposed in the die bores.

Abstract: The fluid-pressure actuated press is mounted on a column structure. It has a ram, a piston, and an associated piston rod. The free end of the piston rod reciprocates downwardly. A support adjustably mounts the ram on the column structure. A lever bar has a proximate free end in engagement with the free end of the piston rod. The distal end of the lever bar is pivoted about a fixed fulcrum carried by the support. A chuck rod is slidably mounted relative to the support along an axis which is parallel to the axis of the piston rod. The chuck rod is pivotably associated with the lever bar at a point intermediate its ends, whereby the reciprocation force on the piston rod is multiplied by the lever ratio to cause reciprocation of the chuck rod with the multiplied force.

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 vegetable chopper in the form of a frame on which a knife blade is fitted to a lower end of a vertical member slidably mounted on the frame. A lever arm, pivotably mounted to the frame is shaped with a slot in which a pin, fixed to the slidable vertical member travels. Manual pivoting of the lever causes the vertical member to move in a linear direction to cause the knife blade to reciprocate with regard to a chopping box, mounted on the base of the frame.

Abstract: The shear mechanism includes two fixed plates and a plate movable therebetween. The movable plate has a notch in one side edge which is moved out of registry with notches in the fixed plate to effect a shearing operation, the movable plate having a blade associated with its notch and one of the fixed plates having a cooperable blade associated with its notch. The fixed plates each have two appropriately located circular holes in which are received a first pair of pins, the pins extending through slots in the movable plate so that the blade on the movable plate can move sufficiently relative to the blade on the fixed plate to perform its shearing operation. Offset from the slots in the movable plate are two appropriately located circular holes in which are received a second pair of pins, the second pair of pins extending through slots in the fixed plate of sufficient size so that the shearing action can take place.

Abstract: In a stock-piercing punch mechanism which includes a base having a punch-receiving bore, a punch having a stock-piercing tip positioned for reciprocal movement in said bore, and a cam trigger pivotably mounted on said base which is adapted to receive a stock-piercing force from a press ram or the like to cause the trigger to pivot and to transmit the force to the punch to move the punch out of the bore to pierce properly positioned stock, the improvement which comprises, a lubrication reservoir located in the base adjacent the punch so that as the punch moves in the bore it picks up and distributes the lubricant to reduce frictional wear of the punch and the bore. In the preferred embodiment the punch is removably attached to a punch plate positioned within the punch mechanism so that the punch can be readily removed and replaced with other punches having the same or different shape and size stock-piercing tips.

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: A machine for punching a series of aligned holes in suitable stock, e.g., for forming binding holes in a stack of sheet material such as paper. The machine is electrically operated and generally includes a pressure bar which is guidingly constrained for movement along a vertical plane. A plurality of punches and coating dies are included and are arranged in a row and suitably attached to base structure directly beneath the pressure bar. Downward movement of the pressure bar is effective to drive the lower portions of selected ones of the punches into the respective dies and upward movement of the pressure bar is effective to return those driven punches, thus constituting one cycle thereof. A pair of lever arms are provided, having one of the ends thereof coupled to the pressure bar and being pivotally attached to the base and are suitably power driven by structure including a clutch which is operably coupled to the other ends of the lever arms for causing reciprocating movement thereof.

Abstract: A device for punching holes in program strips, which device includes a punch and die mechanism and a carriage for positioning a program strip. The carriage is mounted so as to be movable simultaneously in two mutually perpendicular directions in a plane, thereby permitting rapid and exact positioning of the strip relative to the punch and die. A first locking plate is fixed to the carriage and is provided with guide means which constrain the motion of the carriage in the direction of advancement of the program strip. A second locking plate is meshed with the first locking plate and controls the transverse position of the carriage. Both locking plates are provided with means for locking the carriage against further motion once the position of the carriage has been set.

Abstract: A shearing apparatus for cutting metal, sheets, plates, and the like includes a frame having a bed plate extending between opposite ends of the frame and an elongated shearing member having one end pivotally connected to the frame adjacent one end of the frame and the other end of the shearing member is movable between guide members extending upwardly from the bed plate and adjacent the other end of the frame in response to operation of an extensible member having one end thereof pivotally mounted on the one end of the shearing member and the other end thereof pivotally connected to a first pivot point of a crank arm which has a second pivot point having the other end of the shearing member pivotally connected thereto and a third pivot point having one end of a connecting link pivotally connected to the third pivot point and the connecting link has the other end thereof pivotally connected to the other end of the frame and adjacent the guide members.