Abstract: A punch includes a first member and a second member which has two lugs extending therefrom which are pivotally connected to the first member. Two apertures are defined through the second member. A transverse frame is connected between the two lugs and two punching tools movably extend through the transverse frame. Each punching tool has the first end thereof contacting the underside of the first member and the second end of each punching tool extends through the transverse frame and is located in alignment with the aperture corresponding thereto. A first end of a rod rotatably extends through the second member and the first member, wherein a second end of the rod movably extends through the second member. A handle is pivotally connected to the first end of the rod so that the handle is pivoted relative to the first member to extend the distance between the punching tools and the handle.

Abstract: A multi-purpose blind cut-down apparatus for cutting a blind having a head rail and closure elements. The cut-down apparatus has a blind holding plate with a blind component opening and a closure element opening for holding the head rail and closure elements in position for cutting. The cut-down apparatus uses a closure element cutting bar moveable relative to the holding plate for cutting the closure elements extending through the holding plate. The cutting bar has an die opening for receiving a cutting die on a cutting die plate. The die opening and cutting die receive the head rail of the blind and cooperate to cut the head rail by moving the cutting die plate relative to the holding plate. The cutting bar moves in a linear path while the die plate moves in an arcuate path, both the cutting bar and die plate are moved by a transmission element moveable relative to the holding plate.

Abstract: A punching device for punching an aperture in a sheet includes a housing and a handle pivotally joined to the housing with a first pivot connection. A drive plate is slidably displaceable in the housing. The drive plate includes a protrusion extending from a surface. The drive plate is preferably pivotally joined to the handle with a second pivot connection remote from the first pivot connection. A punch is disposed in the housing and operably engages the protrusion of the drive plate such that displacement of the drive plate in the housing causes operation of the punch.

Abstract: In accordance with one aspect of this invention an improved trim press is taught for use in separating molded articles from a web of material. The trim press includes a frame, a drive motor carried by the frame, a first platen carried by the frame, and a second platen carried by the frame and configured to be moved in reciprocation relative to the first platen. A first flywheel assembly is provided on the trim press having a weight with an eccentric mass, the weight being driven in rotation by the motor and coupled to drive the second platen via at least one kinematic linkage. The trim press also includes a second flywheel assembly having a weight with an eccentric mass, the weight being driven in rotation by the motor and coupled to drive the second platen via at least one kinematic linkage.

Abstract: A finisher provided with a punching unit which punches a sheet. The punching unit has five punching rods, a drive shaft which rotates to drive the punching rods, five pairs of circular cam and eccentric cam which are fitted around the drive shaft and a switching board which moves the drive shaft in its axial direction reciprocally at a specified pitch. With a one-pitch movement of the drive shaft in its axial direction, three of the five punching rods (in a three-hole mode) or two of the five (in a two-hole mode) come into contact with the respective eccentric cams, and the three rods or the two rods are moved to make three holes or two holes in a sheet. The selection between the three-hole mode and the two-hole mode is automatically carried out in accordance with the sheet size.

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: In a toggle type punch driving system, the upper and lower ends of a bendable lever which can bend at an intermediate part thereof are pivotably connected to a fulcrum member and a ram respectively, and an advancing/retreating member for bending the lever is connected to the bendable part of the bending lever. The fulcrum member is formed as a vertically pivotable lever and it is borne by an upper/lower position switchover mechanism composed of a second bendable lever supported between a free end of the fulcrum member and frame, and an air cylinder. A retraction stroke of the ram necessary for tool change is assigned to the bending motion of the second bendable lever to diminish the punching stroke of the ram based on the bending motion of the bendable lever.

Abstract: A device that is able to reduce the variation in the clearance between the upper and lower blades and of which the clearance adjustment operation is simple. The work cutting apparatus has a freely rotating ram mounted with an upper blade. An axial direction pressure application means that prevents any play in the axial direction at the bearing being the rotating pivot of this ram by the application of pressure is arranged. The axial direction pressure application means applies pressure in the axial direction to the inner wheel of the bearing via the spacer by a cylinder attached to the rotating support shaft and pressurizes the bearing. The pair of upper and lower blades each form an approximate L-shape and the rotating support shaft is positioned such that it is at an angle within the horizontal plane with respect to each side of the upper and lower blades.

Abstract: The top and bottom ends of a pivoting lever, which is pivotable in the middle, are rotatably connected with a supporting component and a ram, respectively. A shuttle component is linked with the pivot point of the pivoting lever. The shuttle component drives the pivoting lever forcing it to pivot, and when the shuttle component reaches the midpoint of the stroke the pivoting is fully extended. The shuttle component is shuttled by way of a crank, utilizing a servomotor as the drive source. The ram drives the punching tool and is held by the frame in the way that it can readily make the up and down motion.

Abstract: The leading end portion of an elongated length of wire is cut off from the remaining length of wire each time the wire dwells after being advanced along a generally horizontal path. The cutting is effected by moving a cutter downwardly into cutting engagement with the wire and by immediately thereafter moving a wiper downwardly into engagement with the leading end portion of wire to push that portion downwardly and, if necessary, to cause shearing of any uncut diameter of the wire. The cutter and the wiper are actuated by a single, double-acting eccentric which serves to positively advance and positively retract both the cutter and the wiper. The cutter is carried by an arm which is actuated directly by the eccentric while the wiper is carried by a pivoted link connected to the arm. The eccentric, the arm and the link coact to cause the wiper to overtake the cutter as the cutter approaches the bottom of its cutting stroke.

Abstract: An elongated rod is journalled in a housing to reciprocate substantially vertical therefrom and has a cutting blade fixed on the tip of the lower end of the rod. A rotary motor is located at the upper end of the housing and is provided with an eccentric cam for converting the rotary motion into linear reciprocating motion.

Abstract: A punch press having connecting rods which face away from each other are arranged on the eccentric shaft, and each connecting rod is coupled to a connecting lever. Two toggle joint mechanism units are connected to one connecting lever. Two further toggle joint mechanism units are connected to the other connecting lever extending in the opposite direction. The first named toggle joint mechanism units are connected via pressure columns to a first ram. The second named toggle joint mechanism units are connected via further pressure columns to a second ram. Due to the driving structural members which are arranged symmetrically distributed relative to the eccentric shaft of the punch press and the two rams arrived that thereby, the punch press can feature an extremely long space for receipt of the tools without that the height of the punch press, the allowable rated loading and the moving masses must be held overally large.

Abstract: An apparatus for trimming the width of blinds of the type having a headrail, and a bottom rail and blind slats, and having a support body with a headrail opening, and a bottom rail opening, and a blind slat opening the blind components being insertable into their openings from one side of the support body, a die plate located adjacent to the support body, a headrail cutting recess, and a bottom rail cutting recess in the die plate, guides on the support body for the die plate, enabling the die plate to move relative to the headrail and bottom rail openings between two positions. A modified apparatus can be used to trim the width of a vertical blind having a headrail and control rods.

Abstract: Apparatus for cutting a web, including a frame ((70, 186); a crank (188) mounted for rotation on the frame; an upper platen (210); a pair of linear guides (212) for the upper platen; a first crank arm (196) connected between the upper platen and the crank; a lower platen; second and third crank arms (218, 220) connected between the lower platen and the crank; an upper die shoe (262) mounted to the upper platen; a lower die shoe (260) mounted to the lower platen; a pair of linear guides (264) between the die shoes; and a system (287-290, 298-300) for rotating the crank.

Abstract: A manual sheet paper punch having an elongated pivotal flap which drives punch dies to punch sheets and, in addition, a pivotal lever positioned above the flap for hand operation to urge the elongated flap downwardly to punch sheets. Increased mechanical advantage is accomplished.

Abstract: Manually and electrically powered die cutting machines for making paper cutouts with replaceable dies. A generally cubicle platen cutting head preferably mounted on a supporting cabinet comprises a rigid, supporting base with a pair of outwardly projecting, parallel side plates that surround a pair of spaced apart platens. A stationary platen is fixed between the sides. A movable platen is laterally suspended between the sides away from the fixed platen, defining a die-receptive compartment therebetween. A die selected to produce the desired shape, and the paper to be cut, are inserted within the die-receptive compartment in sandwiched relation before platen compression. The movable platen is suspended by pins projecting laterally away from its edges that engage suitable follower slots defined in the side plates. A crankshaft assembly pivots an elongated, roller-equipped crankshaft to displace the movable platen for cutting.

Abstract: Embodiments of an punch machine are shown and described, each comprising a quick-change die assembly. The die assembly may be quickly installed and removed from the punch machine, without bolting or unbolting of either machine housing or the die assembly itself. The die assembly is slid into the machine through a hole in the machine housing and into a position which mates part of the die assembly with the push-bar. A clamp, with a handle outside the machine, is then pivoted against the die assembly. The push-bar is adapted to be self-supporting without being bolted to the die assembly, keeping the push-bar in place without manual adjustment and alignment. The die assembly preferably includes a die, pin retainer, and punch pins, but does not require additional structure to secure the pins to the retainer or to connect the die and retainer.

Abstract: The lever press includes various elements such as a lever (3), a fulcrum shaft (4), a crank shaft (5), a crank wheel (6), a forked portion (7), a crank pin (8), a slider (9), a large gear-wheel (10) and a motive gear-wheel (13), etc. which are dimensioned in relation to the ascent/descent stroke (S) of a ram which is set to be 1. The lever press is designed to have the same capacity as the conventional lever presses while remarkably reducing the size thereof.

Abstract: A press as provided for stamping parts from a sheet of stock material. The press includes a frame having a fixed platen secured to the frame against movement. A movable platen is movably mounted to the frame between a closed position in which the movable platen is spaced from the fixed platen by a distance sufficient to receive the sheet of stock material between the platens, and a closed position in which the stock material is sandwiched between the platens to form the part. A drive wheel is rotatably mounted to the frame about an axis parallel to the axis of movement of the movable platen. A plurality of cam members on the drive wheel engage cam followers on the movable platen during rotation of the wheel in order to move the movable platen between its retracted and its closed position. Each cam member includes a dwell portion which retains the movable platen in its closed position for a predetermined angular rotation of the wheel.

Abstract: A variable dwell cycloidal indexing device for converting a uniform rotational motion into intermittent rotational motion with greater than one predetermined dwell point. The device includes an input shaft having an axis of rotation with a stub shaft extending eccentrically from a distal end of the input shaft. A planetary gear is rotatably mounted on the stub shaft. There is an internal gear rotatably supported on the input shaft and mounted coaxially therewith with the planetary gear intermeshing with said internal gear. A crank pin projects from the planetary gear at a position eccentric to the axis of rotation of the planetary gear. The motion of the crank pin during rotation of the input shaft is defined by allowing the crank pin to oscillate in a slide slot at a fixed location, or by attaching the crank pin to a pivoting link which is, in turn, attached to a fixed point. In either case, rotation of the planetary gear about its own axis is limited.

Abstract: There is disclosed a mechanical pressing machine in which an unbalanced inertia force, produced during reciprocal movement of a slider, is canceled without producing deflection in the whole of the pressing machine, thereby enhancing dynamic precision. The slider, slidably mounted at a lower portion of a frame, is connected to a dynamic balancer, slidably mounted at an upper portion of the frame, by link mechanisms. A press cam, having a cam surface in contact with cam followers mounted respectively on the slider and the dynamic balancer, is fixedly mounted on a cam shaft. Dynamic balancer cams, each having a cam surface in contact with cam followers mounted respectively on interconnecting points of the link mechanisms, is fixedly mounted on the cam shaft. The dynamic balancer is driven to move in a direction opposite to a direction of movement of the slider, so that an unbalanced inertia force, produced in the moving slider, is canceled by an oppositely-directed inertia force produced in the dynamic balancer.

Abstract: A paper punch comprising a one-piece die body, a one-piece press body, and a plurality of one-piece punch heads; the die body and press body being pivoted along a rocking axis for a rocking motion between an inactive position and an active position, the punch heads operating therebetween; the die body providing a base with die holes, guides with guide holes, and a paper reception region therebetween; the punch heads being constrained by the guide holes for reciprocation along the axes of the die holes and the guide holes; the press body controlling axial retraction of the punch heads from the paper reception region, and projection of the punch heads through the paper reception region and into the die holes, the inactive position being where the punch heads are substantially fully retracted from the paper reception region and the active position being where the punch heads are substantially fully projected into the paper reception region; the punch heads having slides at one extremity; guide channels in the pr

Abstract: A punch press ram drive is described in which a reversible electrical servo motor is coupled to a crankshaft having an eccentric journal driving a pitman arm connected to the ram. The electrical servo motor is operated by program controls so as to either cause rotation or oscillation of the crankshaft to drive the ram through various programmed stroking modes, in which punch position, velocity, acceleration, varying over the course of a stroke may be programmed.

Abstract: It is known to use the leading edge of a film strip to guide the strip through processing apparatus. However, this leading edge may be damaged as the film is loaded into and unloaded out of a camera. Described herein is a film unloading device in which a curved guillotine blade (240) is used to provide a newly cut leading edge by which a film strip can be guided through processing apparatus. The guillotine blade (240) is reciprocated between a rest and an operative position by a motor which operates in one direction only. The blade (240) is mounted on a rotating drum (250) by means of a crank pin (258), the drum being rotated through 180.degree., in the direction indicated by arrow 252, to move the blade (240) from its rest to its operative position and then through a further 180.degree. to move the blade (240) back to its rest position.

Abstract: A strand of glass is cut into gobs by a pair of opposing shearing blades driven by a crank drive in which eccentric pins from a crank disk are connected to a support disk of a crankshaft and a support disk on an auxiliary shaft, connecting rods being linked to the pins and operatively connected to the support arms of the blades.

Abstract: There is disclosed a mechanical pressing machine of the general-purpose type which has advantages of a crank press, a knuckle press and a cam press. The pressing machine includes a slider which is mounted on a frame for vertical sliding movement, and has an upper press die mounted on a lower surface thereof, a pair of sliding blocks mounted respectively on right and left side portions of the frame for horizontal sliding movement, a pair of right and left connecting rods which are rotatably connected at their one ends to the sliding blocks, respectively, and are rotatably connected at their other ends to the slider, an input shaft which is rotatably mounted on the frame, and is connected at its one end to a flywheel, and a rib cam mounted on the other end portion of the input shaft, the rib cam having a peripheral portion held between cam followers and a roller follower, mounted on each of the pair of sliding blocks, so as to reciprocally move the pair of sliding blocks right and left in a symmetrical manner.

Abstract: A revolving cam-type press includes a drive shaft supported by a crown and a middle plate, the drive shaft being adapted to be rotated by a drive device; a revolving cam fixedly mounted on the drive shaft; a fluctuating disk provided on an inclined surface of the revolving cam for converting a rotational output of the revolving cam into a reciprocal motion; sliders movably provided at an outer peripheral portion of the fluctuating disk for producing a pressing pressure; a plurality of fluctuation disk rotation-prevention pins extending through the fluctuating disk to be in parallel relationship to and in a concentric relationship to the drive shaft, the pins being fixedly secured at their one ends to a slider guide; and spherical bearings slidably mounted respectively on the other ends of the rotation prevention pins and engaged respectively in through holes formed through the fluctuating disk.

Abstract: A device for performing the continuous cutting of materials of any form and nature, provided they are stratified and not flexionally rigid. The device generally comprises: fixed and mobile support surfaces; a mobile cutting shear cooperating with a fixed cutting shear; a fixed blocking unit on the fixed support surface side of the cutting shears; a mobile blocking unit on the mobile support surface side of the cutting shears; an eccentric for driving mobile portions of the device, including the mobile cutting shear, the eccentric being synchronized with the fixed and mobile blocking units; and a link block and slide guide. Non-rigid, stratified materials thereby may be more easily cut in that the invention substantially reduces or eliminates the dragging effect of the material that typically occurs during the cutting process.

Abstract: A method for the adjustment of a disk cam, whereby an electric motor turns the disk cam out of a prescribed initial position by a prescribed rotational angle, comprising the steps of providing a disk cam having two markings in a prescribed angle from one another defining a target sector; sensing said two markings during the rotational motion of the disk cam by a sensor stationarily arranged outside the disk cam; in the initial position of the disk cam arranging the sensor having an angular spacing from a target radius of the target sector in rotational direction that is aligned to the rotational angle; identifying the running time of the passage of the markings at the sensor; and arresting the motor in response to the sensing of the second marking and supplying the motor with electrical energy for turning it in the opposite rotational sense, the amount of this energy dependent on the respectively identified running time, being taken from an energy/running time characteristic for the return of the disk cam to

Abstract: An apparatus for machining a square inside corner on a workpiece. The apparatus comprises a rotatable shaft, a device cooperating with the shaft for transferring the rotating motion of the shaft to transverse oscillating motion, and a cutting tool mounted to the device and moving in the transverse oscillating motion. The cutting tool preferably includes a blade contoured to produce the desired cutting surface. Both edges of the blade are cutting edges and are disposed at a 45.degree. angle. The device comprises a pin mounted on and offset from the shaft, a sliding plate to which the cutting tool is mounted, and a pair of sliding sleeves on either side of the sliding plate. The sliding plate includes an elongated slot to receiving the pin so that as the shaft rotates, the pin is moved within the slot causing the sliding plate to slide transversely within the sliding sleeves to provide the transverse oscillating motion.

Abstract: A sawing machine includes a base body which has a front portion, a rear portion and a worktable with a working surface, and a support body disposed adjacent to the rear portion. The worktable has a sawing slot that opens at the working surface. An upper hollow arm is fixed to the support body and is located above the working surface. A lower hollow arm is fixed to the support body and is located opposite to the upper hollow arm below the working surface. An upper shaft is mounted rotatably in the upper hollow arm, while a lower shaft is mounted rotatably in the lower hollow arm. A driving mechanism is mounted to the support body to drive the shafts to rotate synchronously. Two saw blade mounting members are mounted slidably and respectively to the hollow arms and define cooperatively a straight line passing through the sawing slot. The sawing machine has a converting unit for converting the synchronous rotations of the shafts into synchronous linear movements of the saw-blade mounting members.

Abstract: A stoma wafer cutting apparatus with a base having an upwardly-extending projection over which a stoma wafer can be assembled, and a cutting unit including a circular cutting knife extending from its lower face for engagement with the stoma pad to effect the cutting of an enlarged hole therein and the upper end of the upstanding projection having a slot extending inwardly from its side face to the diameter of the projection. A hand-operating lever provided with a cross pin extending between depending spaced eccentric portions and adapted to enter the side slot of the projection on being assembled thereover for engagement of its rounded eccentric faces with the top surface of the cutting element. Upon application of pressure upon the lever, an enlarged hole will be cut in the stoma pad to render a hole suitable for receiving the user's particularly-sized stoma tube.

Abstract: Compressive force transmitting coupling (64) between an actuator (16), which oscillates along an arcuate path and a ram block (12) which reciprocates along a straight line path comprises first and second compression blocks (66, 68) and a bearing (70) between the compression blocks (66, 68). The compression blocks are in alignment and in compressive engagement with the ram block (12) and actuator (16). The compression blocks have opposed concave cylindrical bearing surfaces (72, 73) and the bearing (70) has oppositely facing convex bearing surfaces (74, 75) which are complementary to the concave surfaces (72, 73) of the blocks (66, 68).

Abstract: A mechanical press includes a slider which is reciprocated, through connecting rods, by an oscillating plate oscillating around a driving shaft to obtain a press load. The press further includes a swash plate rotatable with the driving shaft. The oscillating plate oscillates in accordance with the rotation of the swash plate. A plurality of lock pins are concentrically disposed in parallel with the driving shaft on a side of the oscillating plate opposite to the swash plate. Each of the lock pins has a spherical head housed in the oscillating plate so as to make the pins rotatable and axial movable. A slider guide supports the pins and the slider.

Abstract: At a cut end portion of a belt-like member is formed a jointing surface, which is inclined at a small angle with respect to the surface of the belt-like member, simultaneously with cutting. A belt-like member (32) on a conveyor belt (6) is pinched under a pressure by an upper die (29) and a lower die (33) heated respectively by heaters (30) and (34), thereby it is subjected to plastic deformation and cut, and also jointing inclined surfaces are formed at the cut end portions. A die holding member (24) for holding the upper die is reciprocated in the vertical direction, by an action of a rotary shaft (11) having an eccentric cam (18). A separating member (38) which is moved vertically by another cam (40) operates as delayed with respect to the movement of the upper die, and when the upper die leaves the belt-like member, it presses the belt-like member to insure separation of the die.

Abstract: The sheet cutting die press includes a handle fixed to a cylindrical shaft, the longitudinal axes of which is off-set from the longitudinal axes of stub axles at either end of the shaft. Thus, as the handle is moved causing the shaft to rotate, it applies pressure through a pair of bearings to a pair of pillow blocks which in turn rests on the top surface of a top platen. A cover over the cylindrical shaft is fixed to the pillow blocks so that, as the handle is moved to a position to retract the platen, the pillow blocks are lifted by the cover.

Abstract: Force transmitting coupling (44) for transmitting force from an actuator (16) which oscillates along an arcuate path to a ram block (12) which reciprocates along a rectilinear path comprises a flexible member (50) coupling which is connected to the actuator (16) by a lost motion connection (90, 94) and which is against the ram block (12). The flexible member (50) is supported intermediate its ends in a manner such that it can flex by a predetermined amount but not more than the predetermined amount. When the ram block (12) is pushed from a retracted position to a forward position, the flexible member is placed in compression and flexes by only the predetermined amount. The force transmitted to the ram block is applied to the axis of the ram block.

Abstract: Near a discharge device (48) for discharging paper (P) with an image formed thereon, there is provided a punch (7) for punching holes. The drive of the discharge device (48) is controlled so that the punch punches the punch holes in the trailing portion of the paper (P), without causing creasing or tearing or change in the quality of the paper (P). The punch (7) includes punching cutters (72) and a punching die (74). The punching cutters (72) and the punching die (74) are provided in a unit (U) which can be drawn out of a casing (1) covering the punch (7). With the unit (U) drawn out of the casing (1), jam recovery can be easily executed. The unit (U) is movable in the width direction of the paper (P), thereby making it possible to adjust the position of punched holes. A collecting box (76) for collecting paper scraps (P1) is disposed in the unit (U). If the collecting box (76) is pivoted or the opening (76a) thereof is lifted up when the unit (U) is pivoted, the paper scraps (P1) therein will not fall out.

Abstract: A cutter apparatus having a fixed blade in an opening of a paper feeding guide; and a movable blade having a cutting portion which enters into the opening. A paper holding plate is provided on the movable blade slidably in the cutting direction. The distal end of the paper holding plate is kept projected by a sliding mechanism in the cutting direction from the distal end of the cutting portion of the movable blade. With the paper holding plate firmly holding the paper against the feeding guide, the sliding mechanism further moves the movable blade into the opening. On carrying out the cutting operation, firstly the paper holding plate slidingly reaches the recording paper and tightly keeps the paper stationary. Thereafter the cutting portion of the movable blade moves forward enters into the opening to cut the paper. The result is that the recording paper does not escape when undergoing the cutting operation, the cutting quality can be kept excellent to a certain extent irrespective e.g.

Abstract: A method of cutting a fed sheet-material into a cut segment and a remaining portion by engaging a movable cutting edge with a fixed cutting edge is disclosed, wherein the remaining portion after being cut off is fed in a spacing with a predetermined amount of insertion between the fixed and movable cutting edges. The top of remaining portion can therefore be prevented from being curled down forward in the moving direction of the movable and fixed cutting edges. An apparatus for cutting a fed sheet-material into a cut segment and a remaining portion by engaging a movable cutting edge with a fixed cutting edge is also disclosed, wherein a plate member incorporated therein hinders the movement of the top of remaining portion after being cut off together with the movable cutting edge. Hence, the top of remaining portion can be prevented from being turned up by the movable cutting edge.

Abstract: A shearing machine for shearing a plate workpiece includes a frame; a ram having an upper cutting blade and being mounted on the frame in a vertically movable manner; a worktable being fixedly mounted on the frame and having a lower cutting blade to define an opening between the upper cutting blade and the lower cutting blade so that the plate workpiece to be sheared may be fed from the front side of the upper blades into the opening with a portion of the plate workpiece extending to the rear side of the opening; a conveyor being mounted on the frame for supporting the portion of the plate workpiece and for conveying the sheared portion of the plate workpiece to the rear side of the shearing machine, the conveyor being vertically movable in response to the vertical movement of the ram; and a drive shaft means having an eccentric member for driving both the ram and the conveyor reciprocalby up and down so that the conveyor descends before, or simultaneously with, the actual cutting into the workpiece by the up

Abstract: The balancing weight for the balancing of the rotating forces is connected via link members to respective balancing weights for the balancing of the oscillating forces. The balancing weights for the balancing of the oscillating forces are each pivotable mounted to the machine frame at one end via projections. At the respective opposite ends they include further projections, via which those ends are pivotably connected to each other via a pivot member. This forms the guiding of the movement of the balancing weights.

Abstract: A cushioning dunnage conversion machine for converting sheet-like stock material, such as paper in multi-ply form, into cut sections of relatively low density pad-like cushioning product, and cutting assembly therefor, is provided. The machine includes a stock supply assembly, a forming assembly, a pulling/connecting assembly and a cutting assembly, all of which are mounted on a machine frame. The machine frame includes a base plate having an upstream end and a downstream end, a first end plate extending generally perpendicular from the upstream end of the end plate and a second end plate extending generally perpendicular from the downstream end of the base plate.

Abstract: The invention relates to an adjustable stroke punch press which has a crankshaft with an integral eccentric portion around which is disposed an eccentric sleeve, a connection arm, an L-shaped piston-like sleeve, a locking plate, and a clamping plate. During press operation, the eccentric sleeve is locked to the crankshaft through the locking plate and the clamping plate. Stroke length is adjusted by changing the eccentricity of the integral crankshaft eccentric portion relative to the eccentric sleeve. The eccentric sleeve is unlocked from the crankshaft and locked to the connection arm during stroke adjustment allowing the crankshaft to rotate relative thereto by utilizing the inching mode of the press.

Abstract: A sheet cutter comprises a fixed cutting member; a movable cutting member whose cutting edge slopes so that the movable cutting member has a V-shaped extension and/or notch; and a control member for controlling the stroke of the movable cutting member, whereby the movable cutting member is moved to overlap with the fixed cutting member to shear a sheet at a predetermined portion thereof.

Abstract: A vibrational dampening system in a cutter head having an elongate knife reciprocated to cut a ply or a stack of plies of sheet material comprises a drive pulley having an eccentrically mounted pin on which is journalled a linkage connecting the drive pulley to the knife, and two driven pulleys located on either side of the drive pulley synchronously interconnected with the drive pulley by a belt having spaced apart teeth formed on each side. The drive pulley and each of the two laterally disposed driven pulleys has a counterweight which rotates 180 degrees out of phase with the rotation of the eccentric pin in order to cancel the vertical forces generated by the reciprocating knife and its associated connecting linkage. The two laterally disposed driven pulleys rotate in an opposite direction relative to the rotational direction of the drive pulley in order to cancel any side-to-side forces generated when the counterweights move between vertically oriented positions.

Abstract: In order to decrease shocks and vibrations to plastic gas concrete during cutting thereof with wires, the cutting wires are guided and driven separately from one another in a cutting frame.

Abstract: A sheet cutter comprises a fixed cutting member; a movable cutting member whose cutting edge slopes so that the movable cutting member has a V-shaped extension and/or notch; and a control member for controlling the stroke of the movable cutting member, whereby the movable cutting member is moved to overlap with the fixed cutting member to shear a sheet at a predetermined portion thereof.

Abstract: A cut-off die set of the double cut type, in which sections of tubing are successively severed from a length of tubing, utilizing a notching cut followed by a severing cut. A rack and pinion assembly is used to transform the vertical reciprocating motion of the upper and lower platen into the horizintal reciprocating motion used for the notching stroke. The rack and pinion assembly comprises a rack mounted to the upper platen and a gear sector mounted to the lower platen, the gear sector includes a drive roller which engages a cam track on the cross slide. As the upper platen and lower platen are vertically reciprocated, the rack member causes the gear sector to rotate, sliding the drive roller through an arcuate path. Movement of the drive roller through the arcuate path causes the cross slide to move in a reciprocating manner in relation to the reciprocating motion of the upper and lower platens.

Abstract: A sheet material cutting apparatus in which a pair of blades comprising a movable blade and a fixed blade are arranged, and the movable blade reciprocates to cut sheets. A drive device is mounted on the cutting apparatus, which drive device includes a drive arm to actuate the movable blade and a connecting lever having a split groove for connecting the lever to the drive arm. The movable blade is driven with the aid of the connecting lever and the drive arm of the drive device. The drive of the movable blade is controlled by elasticity of the split groove in the connecting lever. When load exceeding a predetermined amount occurs at the movable blade, the split groove in the connecting lever permits the drive arm to come off.