Abstract: A fluid actuated cutting machine comprising a stationary lower blade and a vertically movable upper blade mounted at one end to a pivot rod. The upper blade is disposed at angle relative to the horizontal plane. The other free end of the upper blade is disposed beyond a vertical plane on which lies the cutting edge of the lower blade. A pressure arm, mounted on a cantilivered beam connected to the base of the machine, acts against any tendency for the upper blade to align its cutting edge with the cutting edge of the lower blade. During its downward movement, the upper blade is constantly drawn from its horizontally angled position relative to the lower blade towards alignment with the lower blade. This movement is resisted by the pressure arm. The resistance causes a firm cutting pressure between the two blades at the constantly moving contact point during the downward movement of the upper blade.

Abstract: The invention relates to apparatus and a method for cutting a series of spaced-apart continuous linear slits in a sheet of flexible plastics material, for example in the manufacture of an adjustable width window blind. In one embodiment the apparatus includes a feed roller for feeding sheeting to be slit to a support means, a plurality of slitting blades movable in a direction transverse to the direction of travel of the sheeting and means for controlling the blades so that they cut to a depth less than the thickness of the material. In a second embodiment the blades are stationary and are adapted to cut in the direction of travel of the material. The blades may be mounted on leaf springs biased towards the material to be cut, means being provided for controlling the biasing force. Alternatively, a stop may be provided to control the depth of cut of the blades.

Abstract: A cutter assembly for cutting strip material into individual lengths particularly for cutting labels which include cloth material having polyester fibers which must be cut while operating with a heated blade comprises a fixed support with a fixed blade having a first side secured to the support and an opposite second side and having a top cutting edge over which the strip material to be cut is fed. A movable member is movable upwardly and downwardly relative to the fixed blade and carries vertically spaced apart pintles to laterally spaced locations which provide guideways at opposite sides of a movable blade assembly. The movable blade assembly includes a block portion having a guide pintle which extends between respective two pintles on each side thereof so as to prevent vertical movement of the block but permit its lateral displacement toward and away from the associated movable member.

Abstract: A miniature microtome assembly with a bellows-operated blade on an arm swingably mounted on a flexible hinge. The specimen is secured in a chuck on a support arm pivoted on a flexible hinge. The specimen is fed toward the cutting path of the blade by a suitably supported feed screw operatively driven by a nut gear actuated by a bellows for coarse advancement steps, and has a fine advance provided by a piezoelectric crystal mounted between the specimen stage and the top end of the feed screw, thereby providing coarse and fine feed of the specimen. The assembly may be contained in a vacuum chamber and the active parts are operated by remote control.

Abstract: An apparatus for transporting, cutting and dispensing heavy web sheet material such as cardboard, plastic film and the like, while in roll form. The apparatus includes a manually wheelable frame that can be selectively raised and lowered by a retractable handle at its rearward end to support the frame on a pair of front wheels for transporting the roll to the jobsite. Lowering the apparatus onto fixed rear legs supports the frame in a rest position for cutting and dispensing the sheet material. The frame has upright front and rear standards mounted in asymmetrical opposed relation on one side of the longitudinal center line of the frame. Thus, the roll is readily mounted in a stabilizing manner substantially along the frame center line by means of its roll axle shaft being supported on the inboard side of the standards.

Abstract: A pneumatic press assembly 10 uses air pressure to power a piston 70 in a cylinder 52 through a power stroke. Springs 76, 78, 80, 82, 84, and 86 oppose the motion of the piston 70. A set of return springs (76 and 78) is effective over the entire stroke of the piston. The return springs are compactly mounted within the cylinder 52 between the bottom of the piston 70 and a shoulder 56 which extends radially inwardly from the cylinder wall. The shoulder also cooperates with a central portion 110 of the piston 70 to prevent rotation of the piston. A second set of springs (80, 82, 84, and 86) is effective only when the piston 70 is within a predetermined distance from the bottom of the power stroke. The second set of springs 80, 82, 84 and 86 is disposed between the bottom 230 of the cylinder 52 and a preload member 234. When the piston 70 approaches the bottom of its stroke, it contacts the preload member 234 which in turn compresses the springs 80, 82, 84, and 86 bringing the piston to a halt.

Abstract: An edge trimming device is provided for the trimming of moving laminate webs which include a carrier layer and at least one outer layer. A cutting device is supported by a resilient support so that the cutting device is capable of lateral movement while remaining perpendicular to the laminate web. The cutting device trims the edge of the laminate web as it passes by the cutting device. Preferably, the cutting device cuts the outer layer which extends from a longitudinal edge of the carrier layer.

Abstract: A paper cutter assembly for use in combination with a supported roll of paper. The assembly, comprises a displaceable stationary single-strand cutter wire member that is positioned under and across the width of the paper roll, and a movable paper-cutting assisting subassembly that includes a pulley member disposed on the cutter wire member, and a handle member that is removably connected to the pulley member. When the pulley member is pulled by the operator toward himself and across the width of the unrolled paper with the use of the handle member, the cutter wire member is displaced toward the operator, the unrolled paper is cut in a straight and clean condition across its width, and is severed from the rest of the roll of paper in a quick and safe manner by the movement of the displaced wire member.

Abstract: Apparatus for slitting sheet material includes a pair of rotatable shafts having cooperating cutting knife assemblies thereon. The knives on one shaft are in the form of axially-spaced knife rings receivable between knife members on the other shaft. The knife rings are elastically deformable axially of the shafts and are spaced-apart a distance slightly greater than the spacing between the knife members to insure the absence of any gaps between the cooperating cutting knives. The knife members are releasably clamped axially on their shaft and are biased apart upon release of the axial clamping force in order to allow positioning of the knife rings between the knife members. Central mounting holes in the knife members increase in size from the axial center thereof toward the opposite ends thereof for allowing limited tilting movement of the knife members relative to the shaft on which they are mounted.

Abstract: Apparatus for severing sheet material by a cutter device that is mounted upon a rail assembly for reciprocating movement. The rail assembly includes a channel member with an outwardly extending guide rail. A separate cutter bar is supported on the guide rail and extends longitudinally above the guide rail. A carriage is mounted on the guide rail for reciprocating movement and includes dual rollers which engage opposite sides of the cutter bar. The carriage is held against the guide rail by a pressure roller which engages the inner side of the guide rail. The pressure roller includes an adjustable mounting arrangement for adjusting the force that clamps the carriage against the guide rail. One of the dual rollers has a dull edge which engages the cutter bar while the other dual roller has a sharp edge to sever the paper or other sheet material as the carriage moves longitudinally of the cutter bar.

Abstract: The shearing machine comprises a stationary apron and a moving apron carried by lateral upright members and provided with cutting blades, the moving apron being guided at both ends by means of roller devices adapted to cooperate with guide ramps mounted on bottom lateral extensions of the moving apron. The guiding devices are placed substantially at the level of the horizontal cutting plane while another guiding device is located in the bottom portion of the shearing machine. The extensions are adapted to receive and transmit the cutting power developed by jacks mounted on the stationary apron.

Abstract: A straight line shearing mechanism which includes at least one set of oppositely disposed shear blades movable in a straight line toward and away from each other. Mounting means are provided for at least one of the blades which has relative vertical movement with respect to the other of the blades. A mechanism is provided for moving and mounting means vertically with respect to the other blade. The mechanism is operable to move the mounting means during all positions of the shear blades. In addition, the vertically movable shear blade is capable of tilting in the event of excess tension between the blades.

Abstract: A glass scoring head has pressure rollers which engage the glass on either side of the scoring wheel to compensate for variations of flatness in the glass, and the scoring wheel is pendulously supported so that it can score in one and an opposite direction without moving the head on the associated bridge structure. The means for so supporting the scoring wheel also includes novel means for rotating the pendulum support itself to permit scoring in mutually perpendicular directions, both of which directions are also reversible as a result of the pendulous mount.

Abstract: A glass scoring head which compensates for variation in the flatness of the glass to provide a score of uniform depth as it traverses the glass has an outer body adapted to be mounted in four possible positions to a bridge or the like to score glass in four different directions. This support body defines an air cylinder with an elongated annular piston means movably mounted therein. A pair of pressure rollers are journalled on the lower end of the piston means to bear on the glass with a force proportional to the air pressure in this cylinder. An elongated support tube is slidably mounted inside the annular piston means, and a second air cylinder urges the tube downwardly to supplement a spring acting between the second air cylinder piston and the tube.

Abstract: This invention relates to gang saws and other cutting apparatus having oscillating cutters for cutting workpieces into slices. The invention provides apparatus, having two elongate spaced apart cutter supports which are driven to oscillate 180.degree. out of phase with each other. Two sets of cutters are connected to the supports. For a suitable workpiece the cutters may be of a hot wire type. Each cutter of one set is connected to the first support by a resiliently extensible connector such as a spring and to the second support by a non-extensible connection. Each cutter of the other set is connected to the second support by a resiliently extensible connector and to the first support by a non extensible connection. Desirably the cutters of one set alternate with cutters of the other and all cutters are coplanar. Movement of cutters of each set in opposite directions tends to cancel the local influence of cutters on the workpiece.

Abstract: Glass scoring apparatus comprises a cutting tool, means for applying a cutting load to the cutting tool when the tool engages a glass surface to be scored, and a damping member arranged to absorb energy developed by reaction forces opposing the cutting load when the tool is moved into contact with the glass. The damping member has a loss factor tan .delta. which is high enough to prevent any substantial transient reduction in the cutting load.

Abstract: A notching mechanism for objects which includes a base and an upright support secured to and vertically projecting from the base. A member for supporting an object(s) to be notched is also mounted on the base adjacent to the upright support, first and second cooperating cutting members, the first cutting member being fixedly secured to the base and the second member being connected to the upright support. A member for reciprocating the second cutting member is mounted to the upright support so as to operatively cooperate with the first cutting member and thereby form a notch in the object(s).

Abstract: A cutting knife used to trim the leads of electrical components which extend through a printed circuit board during manufacture of the board. The knife is made up of a plurality of adjacent knife sections separately resiliently biased against the underside of the board and freely pivotally and tiltably movable over a limited range.

Abstract: A simple direct acting mechanism moves a circular rotatable disc cutter or two such cutters first to rollably engage a hard surface and then to traverse the surface to part the stock between a side-by-side pair of cords or wires. The cutter or cutters are blunt edged, as well as unheated and so avoid baring the cords or wires while parting the stock without the undesired effect of sharp or hot knives. The cutter or cutters are shiftable along the axis or axes to accommodate deviation of the cords with respect to the travel of the cutter. The foregoing abstract is not to be taken as limiting the invention of this application, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be made to the accompanying drawing and the following detailed description.

Abstract: The invention relates to a shear for cutting-off sections of a profile material of the type having a stationary shear beam held in a housing and a movable shear beam which is arranged on a slide which is guided in the housing and can be displaced by means of a drive mechanism, each of the shear beams exhibiting at least one shear opening which is attached to the profile of the profile to be severed and with which are aligned inlet and outlet openings in the slide and housing for the profile material. Means in the housing define a recess in which is mounted the stationary shear beam and means in the slide define a recess in which is mounted the movable shear beam. The shear beams are arranged side by side in parallel and are removable from their respective recesses and, at least during severance of the profile material are biased by a biasing means together in a direction transverse to the direction of motion of the slide.

Abstract: A cutter mechanism for use in a tufting machine or the like featuring a stationary blade having openings through which yarn strands project, the stationary blade being positioned in the path of travel of yarn strands from yarn creels to bit-applying elements with the cutter mechanism further featuring a series of reciprocable blades which are biased against the stationary blade whereupon reciprocation the reciprocable blades will pass over the openings and because of their biasing effect, penetrate the plane of the stationary blade passing into the openings thereby severing the yarn strands.

Abstract: The head compensates for variations in flatness of a table upon which a glass sheet is placed for scoring, and also compensates for bending of the rails or support structure which carry the head as it traverses the table. A jump wheel is provided on a first arm pivotally mounted in the head, which head may comprise a trolley structure, and a scoring tool is mounted in a pivoted second arm having its pivot on the first arm. A spring acts between the first and second arms to bias the scoring tool to a limit position, defined by a suitable stop, such that the force of the scoring tool on the surface of the glass is independent of vertical displacement of the scoring tool as it traverses the sheet. The first arm is also spring biased to maintain contact between the jump wheel and the glass surface.

Abstract: A method and apparatus are disclosed to perform a pair of fabricating operations in sequence on a single workpiece. The apparatus includes an anvil interposed between a pair of spaced, aligned confronting fabricating tools, such as punches or welders. In the apparatus, power means and a force equalization system are mounted on one side of the anvil, so that one of the fabricating tools is essentially at one end of the apparatus. In the method, a workpiece having two generally parallel sections is placed over the anvil such that each workpiece section is interposed between one face of the anvil and a corresponding tool. Then, each workpiece section is subjected in sequence to a fabricating operation, by first displacing one fabricating tool and the anvil toward each other and then displacing the other fabricating tool and the anvil toward each other.

Abstract: An automatically retractable slitter for cutting thermoplastic sheet as it exits from the sheet die of an extruder comprising a housing, a cutter blade mounted in a holder, a recess in the housing of a length greater than the length of the holder for slidably and retractably receiving the holder and blade, an elongated slot in said housing having detent means, an elongated pin secured to said holder and extending transversely through the elongated slot, spring means between the holder and the housing adapted to be relaxed when the holder is in its retractable position within the recess, the pin being adapted to rest in the detent when a cutting force is applied to the blade and to disengage from the detent when no force is applied to the blade.

Abstract: Disclosed is a rolling cut type double side shear wherein an upper side cutting blade and an upper scrap-cutting blade are driven by one crank shaft which has three eccentric sections, so as to increase the production efficiency and to make the shear simple in construction and compact in size.

Abstract: An anvil roll has a steel core and an outer portion of polyurethane. The roll is slightly rotated after a number of veneer clipping operations by a clutch which drives the roll after the roll is pushed by a knife down away from arcuate braking surfaces. An airbag normally urges the roll into engagement with the braking surfaces and is collapsed during adjustment of the roll. Operation of the clutch is prevented during the clipping operation. A double-acting cylinder drives the knife through a toggle joint linkage, and cushioning cylinder means aid in overcoming inertia of the knife at the start of a clipping cycle and also cushion the return of the knife. The cylinder has poppet check valves to rapidly admit air thereto.

Abstract: Slitting apparatus for trimming the edges of a web of corrugated board and longitudinally cutting the web into a plurality of narrow webs is constructed with selectively operable fluid operated means that clamps the working heads in adjusted positions along the length of their respective drive shafts. The fluid operated means includes a plurality of spring steel pressure bars extending parallel to the length of each shaft and disposed within different grooves thereof, with each pressure bar being operatively positioned to clamp a plurality of heads in operating positions by engaging keys secured to these heads. The keys extend beyond the faces of the heads and for each of the heads include notches that provide clearance for the extending portions of the keys secured to adjacent heads.

Abstract: A cutting instrument is provided, particularly applicable to vitreous surgery, having an elongated, tubular housing formed with a cutting orifice near its end. A resilient, inner tubular member is slidably mounted coaxially within the tubular housing. The tubular housing is bent in a manner to displace the cutting orifice in a direction toward the resilient, inner tubular member. As the end of the resilient, inner tubular member passes across the cutting orifice, it is resiliently urged into shearing contact with the cutting orifice.

Abstract: An apparatus for comminuting bulky objects, especially vehicle tires and parts of automobile bodies, comprises two parallel shafts arranged for rotation in opposite directions and at different speeds, each shaft being driven by a separate hydraulic motor and provided with comminuting rings alternately axially staggered with respect to one another on each of the shafts. The rings are provided with means including sharp, pointed portions for seizing and comminuting the objects while conveying them through interstices defined between adjacent rings on the shafts and by smooth portions of the shafts themselves. The shafts comprise a number of alternately disposed grooved bearing surfaces and smooth surfaces constituting the smooth portions. The rings are formed of a number of ring-elements, each in the shape of a sector of an annulus and having a grooved, concave, cylindrical inner surface engaged with a portion of a grooved bearing surface.

Abstract: A shear comprising a frame, a fixed blade, a movable blade cooperating with the fixed blade to cut sheet material disposed therebetween, a hydraulic power cylinder for moving the movable blade upwardly and downwardly past the fixed blade, a lever for drivingly connecting the power cylinder to the movable blade, the lever being pivotally mounted upon the frame to provide oppositely extending lever portions, one pivotally connected to the movable blade and the other pivotally connected to the ram of the power cylinder, a roller journal mounted upon brackets to extend across the frame with the brackets selectively adjustably movable to position the roller, and springs for yieldably urging the movable blade against the roller. The power cylinder is controlled by a linkage and lever mechanism which moves the control member of a valve in response to the movement of a foot pedal as well as the movement of the lever which drivingly connects the power cylinder to the movable blade.

Abstract: A cutter assembly wherein material to be cut passes underneath a cutter bar, a track extending under the cutter bar holds a moveable carriage, a rotatable cutter wheel mounts to the carriage, with a side against the face of the cutter bar, a releasable gripper bar holds the material against the underside of the cutter bar during the cutting cycle, cords attached to the slideable carriage are used to pull the carriage along the track, and means are provided to attach the assembly to a support. A cutter as above mounted in a frame, and having an electric drive motor with controls for moving the carriage, and a cutter as above which is moved by a handle attached to the carriage are also disclosed.

Abstract: A rotary blade cutting assembly wherein a fixed cutting blade and a rotary cutting blade are rotated into radial alignment to thereby effect a cutting operation is provided for performing sequential cutting operations on continuously moving material. The rotary blade is rotated out of alignment with the fixed blade to thereby allow the material to be cut to be positioned with respect to a cutting edge defined by the fixed blade to thereby provide for intermittent cutting of the material by the rotary blade mechanism.

Abstract: A corner shearing machine has two pairs of shears, the lower blade of one pair intersecting the lower blade of another at a right angle, and the upper blade of one pair intersecting the upper blade of the other pair at a right angle, the lower blades being mounted to a base and the upper blades to a reciprocable ram. Adjusting wedge assemblies, with screw drives and manually operable cranks facilitate adjustment of blade clearance, and hydraulically energized pressure pads maintain zero clearance between ram guide slides and guideway blocks therefor. Ram drive is by one or another of two hydraulic cylinders operating through a rocker shaft and linkage connected to the ram, and hydraulic clamps secure the work.