Abstract: The invention relates to a driver (1) for a twin cutting device (2), which comprises a first blade (4), which is non-rotatably arranged on a drive shaft (11) to be rotated about an axis of rotation (r) in a first direction, and a second blade (3), which is non-rotatably arranged on a drive socket (15), which encloses the drive shaft (11), to be rotated about the same axis of rotation (r) in a second direction opposite to said first direction.

Abstract: A hydraulic tool cutting dies including first and second cutting dies. The first cutting die has a first mounting section and a first cutting edge. The first mounting section is sized and shaped to removably attached to a hydraulic tool. The second cutting die has a second mounting section and a second cutting edge. The second mounting section is sized and shaped to removably attached to the hydraulic tool. The first cutting die includes a post extending past the first cutting edge and the second cutting die includes a post receiving area which has a different cross-sectional shape than the post.

Abstract: A device for cutting pieces of material comprising a base, a bridge assembly and a lever arm. The bridge assembly includes a gear assembly operatively connected to the base. The lever arm is coupled to the gear assembly, and a linking member is coupled to the gear assembly; A material clamp is operatively connected to the linking member, and a cutting blade is operatively connected to the linking member. The movement of the lever arm of the first position towards the second position results in the gear assembly and the linking member cooperating to cause the material clamp to move towards the base and affix the position of pieces of material located between the base and the material clamp. The cutting blade comes into contact with and severs the pieces of material after the position of the pieces of material has been fixed by the material clamp.

Abstract: In an apparatus (1) for the severing of gobs from one or more strands (2;3) of molten glass, the severing of each gob is effected by a shear blade pair (5;6). A shear blade (7,8;9,10) of each shear blade pair is arranged on an associated, pivotably mounted shear arm (11;12). The two shear arms (11;12) are coaxially and freely pivotably mounted relative to each other on a common column (13). Each shear arm is pivotably drivable synchronously in relation to the other by its own separate drive means (24;25).

Abstract: A device and a method for cutting a continuously travelling wire which emerges in the form of windings from a winding layer, wherein a cutting device arranged immediately following the winding layer. The cutting device includes a catching device for the targeted grasping of a winding arch and a device for cutting this winding arch. A device for controlling the sequence of movement of the catching and cutting devices are provided. The control takes place, for example, in dependence on the wire properties, such as, the wire diameter in the case of dimensional inaccuracies. In addition, the catching and cutting devices can be controlled in dependence on the position of operation of the winding layer.

Abstract: Glass gob shearing apparatus having opposed shear blades that reciprocate along generally parallel, opposed horizontal paths to periodically bring the shearing ends of the shear blades into partly overlapping contact with one another, to thereby shear a gob of molten glass from a stream of molten glass flowing downwardly between the shear blades. Contact loads between the shear blades are reduced by placing a shim between one of the shear blades, namely the shear blade that is the lower of the shear blades when they are in contact with each other, to thereby impart a slight downward inclination to such shear blade with respect to the other shear blade. Contact loads between the shear blades are further reduced by resiliently mounting the other shear blade to the blade holder to which it is attached, and this is done by positioning curved spring washers between the other shear blade and the blade holder to which it is attached.

Abstract: A tree cutting apparatus includes a frame having forward and rearward ends, with single generally planar blade rotatably mounted on the forward end of the frame. The blade has a cutting edge extending around a portion of the periphery thereof. The cutting edge as a forward and rearward end, with the cutting edge being spaced a distance from the rotational axis of the blade increasing from the forward end to the rearward end, such that the cutting edge of the blade moves transversely with respect to the forward cross-member as the blade rotates to cut a tree or the like.

Abstract: A wrapping film severing apparatus is disclosed for use in severing sheets of film from a roll of plastic film. The roll of film is supported so that it may rotate about its axis of rotation while film is being withdrawn from the roll. A braking force is applied to the roll so that the film is under tension as it is being withdrawn from the roll. An electrically heated cutoff element is located forwardly of the roll for use in severing a sheet of film from the roll as a length of film is withdrawn under tension from the roll and then brought into contact with the cutoff element. The film is threaded through a pair of pinch rollers extending transversely of the film path and located intermediate the film roll and the cutoff element for guiding movement of the film from the roll to the cutoff element. A one-way clutch is associated with at least one of the rollers permitting forward movement of the film toward the cutoff element while restricting backward movement toward the film roll.

Abstract: A severing device for use on a shuttleless loom comprises scissor sections defining raceways for maintenance of a thrust ball bearings therebetween.

Abstract: A multiple stroke shear for cutting bar stock and like workpieces incorporates a pair of hinged jaws with opposed cutting blades mounted thereon. A control assembly mounted in the jaws interconnects the jaws to control the position of the cutting blades relative to one another and applies the cutting force between the cutting blades when successively activated by an operating lever attached to the control assembly in the upper jaw. The control assembly includes provision for maintaining contact with a workpiece between successive cutting strokes. In one embodiment, a handle attached to the lower jaw is used with the operating lever to control and operate the shear manually at the worksite. In a second embodiment, a bracket replaces the handle to attach the shear to a fixed support.

Abstract: A quadruple gob glass feeder and cooperating shear mechanism are disclosed. The shear mechanism has two arms reciprocal toward and away from each other. Each arm has four blades arranged in mating pairs to cooperate with each other for cutting four streams of glass.

Abstract: A shear having a main frame with a horizontal shaft and a shear frame pivotally attached to the shaft for adjustment relative to the main frame. The shear frame includes a pair of spaced members and a king pin is rotatably supported on the spaced members. A master shearing arm is nonrotatably mounted on the king pin and a subordinate shearing arm is rotatably mounted on the king pin and a cutting knife is carried on each shearing arm. The master shearing arm and the subordinate shearing arm are connected by a hydraulic cylinder and a piston rod to move the shearing arms between an open position and a closed position to cut workpieces passing between the cutting knives.

Abstract: A feeding device has the object to ensure the supply of a continuously flowing glass strand and to divide it into predetermined gobs thus establishing the weight of the individual gob and thereafter to proceed with the final sectioning. It is known to activate the drives of the moving mechanical parts of such a feeding device by compressed air. Because of the compressibility of the air, and depending, among others, on the length of the piping, its clear cross section and the prevailing air pressure, an accurate control is not possible, especially when the masses to be moved are large. In order to avoid these disadvantages, the invention makes use of hydraulic piston units for the drive of the translatory movement of the stopper and of the pipe and the use of a hydraulic rotary piston for the rotational movement of the cutting device. The turning movement of the pipe is achieved through a hydraulic rotary piston.

Abstract: A shear mechanism adapted to be attached to a glass feeder for cutting a glass stream into gobs includes a housing supporting a pair of blade arms. At least one blade is connected to each arm. The blades are adapted to be in overlapping relationship in one position of the arms. A motor is supported by the housing and has its output mechanically connected to a pair of shafts for oscillating the arms in unison in opposite directions between open and closed positions.

Abstract: A profile control for a shear mechanism of a glass processing machine eliminates cams, gears, etc. otherwise required to oscillate the shear mechanism arms in unison in opposite directions between open and closed positions. The profile is the angular position time curve of the arms as they open and close over a predetermined angular displacement. The profile is controlled by adjustable oscillators and programmable memory (PROM) which determine the commands to a reversible dc motor drive. The control synchronizes the movement of the arms in proper phase relationship with respect to the feeder mechanism of the glass processing machine.

Abstract: Two blade members are counter-rotated from a rest position to a cutting position in which radially directed cutting surfaces cooperate to snip a strip of material by a shearing action as the strip of material flows from a sewing machine or other processing machine. The blade members are reversible and are biased against each other to ensure positive cutting. A hinge-like linkage permits an offset between the blade members and power means to increase versatility. The cutting apparatus can include sensing means to permit automatic cutting of a completed workpiece from an excess of a strip of material which is sewn to the workpiece during the manufacture of a garment.

Abstract: A shear frame mounting and positioning mechanism for linearly reciprocal shear blades in which the shear frame can be adjusted in a horizontal plane in a direction parallel to and perpendicular to the direction of travel of the shear blades. Additionally, the shear frame is tiltable in a vertical plane which is parallel to the direction of movement of the shear blades. A mechanism is provided for locking the shear frame under the feeder spout, the mechanism including means for adjusting the shear frame in a direction perpendicular to the direction of movement of the shear blades. The shear frame can be swung between a position under the feeder spout to a position out from underneath the feeder spout and also raised and lowered in a vertical direction.

Abstract: A portable apparatus that can be wheeled to a pallet supported by a conveyor for selective removal of nails that interconnect the stringers with the deckboards. The portable apparatus has a platform that is moveable in a vertical direction to position the cutting means at the juncture of the stringer with the deckboards. Such apparatus has a pair of pivotal cutting means that are moveable toward each other into intermeshing contact to shear nails.

Abstract: A shear for cutting bar stock includes upper and lower cutting blade supports each having a cutting blade, and a hold-down member, all pivotally connected about a working bearing. This assembly is pivotally mounted about a second bearing or pivot axis on one end of a frame of the shear, and is height-adjustable by a lockable hydraulic actuator attached to the upper cutting blade support at the opposite end of the shear, to provide vertical adjustability of the cutting point with minimal horizontal or angular displacement thereof. Preferably, the two pivot axes and the cutting point are coplanar. The upper cutting blade support is pivoted relative to the lower one by a hydraulic actuator engaging the upper support at one upper part thereof which is not so coplanar, to provide both a relatively long lever arm and a relatively long cutting arm for minimizing arcuation of the cutting movement. One cutting blade is adjustable within its support for optimum positioning taking into account the shape of the stock.

Abstract: A web severing device has a pair of spaced-apart carriages straddling the path of the web, a severing blade being attached to one of the carriages. Power apparatus are provided for moving the carriages toward each other to bring the blade into severing contact with the web. Resilient apparatus are provided to prevent activation of the severing blade if a relatively rigid foreign object such as a human finger is accidentally embraced between the carriages and to prevent injury. When only the web is disposed between the carriages a portion of the resilient apparatus also functions to urge the blade-carrying carriage into web severing contact.

Abstract: An automatic yarn cutting mechanism comprises a supporting structure, a scissor device, an electromagnet, and spring means holding the scissor device and electromagnet in their inoperative positions when the electromagnet is de-energized. The scissor device is provided with a post mounted slidably relative to said supporting structure, and the electromagnet comprises a solenoid and a plunger core or piston operatively connected to said post. The supporting structure is provided with a plate-shaped member, said scissor device and electromagnet being mounted on one side of the plate-shaped member, said slidable post and plunger core extending through said plate-shaped member to the other side thereof and being connected on that other side by a traverse connector.

Abstract: A device for cutting glass for example separating a drop or portion of a plastic glass skein emerging from a feeder characterized by having two shear arms mounted for rotation in a common frame, each of the shear arms being provided with a knife at its extreme end and a device for periodically moving the arms in a pincher-like closing movement toward one another and away from one another so that the knives can execute a cutting process. The device for periodically moving includes a device for forming a periodic working cycle preferably comprising at least one cam having one segment forming a working stage of a working cycle and a second segment forming an idle stage. By varying the speed of rotation of the cam while the follower is in the second stage, a time delay between the closing of the knives can be adjusted without changing the speed of movement during a cutting stage.

Abstract: An apparatus for cutting a tying band of a coiled material comprising a cutter for cutting the tying band, and pinch rollers for pinching and transferring the tying band after it is cut out. The cut comprises a lower cutter and a pair of upper cutters pivotally mounted on the lower cutter. The lower cutter is connected to a hydraulic cylinder and adapted to be moved up and down along a guide which is obliquely mounted to a base member by the actuation of the hydraulic cylinder. The tying band is being cut out between the lower cutter and the upper cutters.

Abstract: A cutting apparatus for severing a wire continuously advanced through the apparatus along a wire path in a feeding direction parallel to the wire axis, comprises a carriage supported for displacement parallel to the feeding direction; two cutting members connected with the carriage; a support arm articulated to at least one of the cutting members; a displaceable anchor member to which the support arm is articulated by means of a support joint arranged on the support arm at a distance from the cutting member; a drive for moving the carriage in and opposite the feeding direction to cause, with the cooperation of the anchor member and the support arm, a motion of the cutting member in an arcuate path towards and, subsequent to severing, away from the wire and the other cutting member; and a force-exerting arrangement for shifting the anchor member to effect a displacement of the support joint and the support arm for affecting the course of the arcuate path of the cutting member.

Abstract: A self-gripping scissors-type shear cutting device for pile cutting. The ar blades of this cutting device have spikes located on the blades which automatically grip and hold the wood pile being cut, thus preventing slipping or squeeze-off of the work to be severed. This device avoids the use or need for additional clamping or gripping arrangements to hold the cutting blades against the pile to prevent slipping.

Abstract: In an apparatus for de-limbing trees, there is provided a carriage moving longitudinally on a rail, and having a pair of de-limbing arms adjacent one end which are mounted for pivoting movement with respect to the carriage. Each arm defines a concavity adapted to pivot into contact with a tree held in an upper recess in the carriage, and there are means for urging the arms against the tree. Each arm has a first cutting edge along the forward margin and a second cutting edge along the rearward margin, the first cutting edge being offset inwardly with respect to the second, such that the first cutting edge after passing forwardly beyond the stump of a tree limb which it has severed, can shift inwardly to lie against the tree trunk so that the next cut is made as close as possible to the trunk.

Abstract: A shear assembly has frame means to which a first member is pivotally mounted. A second member comprising a blade is pivotally mounted to the first member, with the first and second members being positionable on opposite sides of the body of a tree. Extension of a cylinder interconnecting the second member and frame means provides a scissoring action of the first and second members to provide shearing of the tree. Means are included for providing that upon withdrawal of the second member from the body of the tree, the first member is also withdrawn therefrom.

Abstract: A tree shear apparatus includes first and second blades, and linkage means interconnecting the blades so that the first blade makes a partial, relatively small cut of the tree and withdrawal from the tree while the second blade cuts through the tree so that the first and second blades together make a complete cut of the body of the tree.

Abstract: A cutting apparatus, suitable for cutting or shearing a moving web, comprises first and second wire segments that contact each other at substantially a single point and includes means for causing the point of contact to travel along the length of the wire segments to accomplish the cutting of a web positioned between the wire segments.

Abstract: The invention relates to a machine for cutting down and shaping trees, designed to cut down, strip and truncate trees, consisting of a support and cutting down-stripping-truncating equipment likely to be adapted to a self-propelling device, said equipment carrying a movable framework on which the cutting-truncating and stripping elements are positioned, a machine wherein the components thereof are substantially secured along a one and same axis, the stripping element carrying at least two blades surrounding the tree and at least two rollers with barbs the positioning of which can be adjusted by means of jacks, the axis along which the trunk is pulled between the rollers coinciding with the axis of the trunk between the blades.

Abstract: A tree shear head includes a frame which supports a pair of parallel crank shafts which are respectively linked to a pair of shear blades for moving the latter together into the trunk of a tree being sheared. The crank shafts are rotated by means of an actuator including a cylinder in which a pair of piston and piston rod units are mounted with the rods projecting oppositely and being respectively pivotally connected to a pair of crank arms respectively formed integrally with the pair of crank shafts. To prevent the cylinder of the actuator from shifting axially along the piston rods, a pair of links are connected between the cylinder and the frame, and for preventing the cylinder from rotating about the piston rods, a pair of rollers are mounted on the cylinder and engage the frame.

Abstract: A tree shear head includes a frame which supports a pair of parallel crank shafts which are respectively linked to a pair of shear blades for moving the latter together into the trunk of a tree to be sheared upon rotation of the crank shafts. The crank shafts are rotated by means of an actuator including a cylinder in which a pair of piston and rod units are mounted with the rods projecting oppositely and being respectively connected to the pair of crankshafts. To prevent the cylinder of the actuator from shifting axially relative to the rods and from rotating on the rods, cables are connected between the cylinder and the frame.

Abstract: A delimber blade having a central region beveled at a first angle to form a cutting edge at the tree engaging surface of the blade, and having opposed end regions beveled at first and second angles to form cutting edges spaced from the tree engaging surface of the blade. According to another aspect of the invention a plurality of blades is provided, all of which are identically shaped and sharpened.

Abstract: A cross-cut shear for trees including a support. A pair of cutting blades each having an arcuate cutting edge terminating in a straight cutting edge tangential to the arcuate cutting edge, the blades pivotally mounted on the support for pivotal and guided movement to bring the blades toward one another to cause the arcuate edges to first enter a tree followed by the straight edges together with means for pivoting the blades.