Abstract: A tool for cutting tensioned strapping comprises energy absorbing structures at lateral sides of the cutting mechanism which absorb energy released in the strapping upon severing. The disclosed form is of elastomeric elements having columnar strength in the direction of force application to the strapping, yet having lateral deflection capability while compressed to absorb the energy.

Abstract: A shear-type nail clipper that includes a base arm (1), a twisted arm (13), a stud (15) and an actuating lever arm (17) is disclosed. The base and twisted arms are joined together at one end; and, concave blades (25, 37) are formed in the other ends of these arms. The cutting edge of the blades face one another and lie generally orthogonal to the longitudinal axes of the base and twisted arms. The twisted arm is twisted such that its blade (37) is transveresly inclined with respect to the blade formed in the base arm. As a result, the gap between the blades varies from one side to the other. Formed in the edges of the base and twisted arms adajcent the narrow gap side of the blades are aligned flcrum protrusions (27, 35). Formed in the edge of the base and twisted arms adjacent to the wide gap side of the blades are stud flanges (23, 34). The stud (15) is mounted in holes located in the stud flanges and extends beyond th outer surface of the twisted arm.

Abstract: A hydraulic shear attachment means for construction equipment having a support arm for pivotal attachment to said construction and a lower jaw for shearing. The arm includes flange members positioned on either side of the lower jaw to support the pivotable upper jaw. Arcuate tracks are positioned in the support flanges to receive a support pin extending through the upper shear jaw which rides in said tracks during actuation of the upper jaw.

Abstract: Apparatus for attachment to a boom of a backhoe or other mobile material handling machine, having a stick member pivotally attached to the boom, a first jaw and shear pivotally attached to the distal end of the stick member, and a second jaw and shear pivotally attached to the first jaw and shear, so that power actuation of one jaw causes opening and closing of the jaws and permits interleaved jaw engagement and shearing action between the jaws near the closure position. A heavy duty shear for a backhoe including a lower jaw having a shear blade and a guide blade lying along each other and tied together at their outer ends, an upper jaw defining a shear blade and having a wear plate or guide to engage and slide along the guide blade of the lower jaw, the guide blade of the lower jaw having is edge recessed below the level of the cutting edge of the shear blade of the lower jaw.

Abstract: A seam pulling tool for use in quality control of can manufacture. A pair of pliers have novel upper and lower jaws. The lower jaw has a trapezoidal central flat portion, wider at the rear than at the front, and a vertical side portions on each side of the flat portion with a sharp cutting edge at the top sloping upwardly and rearwardly relatively to the flat portion. The upper jaw has a flat surface the same size as the central flat portion and perpendicular sides providing a sharp cutting edge at each side.

Abstract: A pair of cutter blades is provided for cutting sheet metal in flat tubular form. The blades are pivotally connected together in scissors-fashion so as to be capable of relative movement between each other. At least one of the blades is formed with a cutting edge comprising a piercing point or region having on each side portions which trail the leading extremity of the piercing point or region considered in the direction of cutting, whereby in operation after initial piercing of the metal to be cut, and on continued cutting, the incision made by the piercing point or region increases away from the pierced region towards the sides of the material being cut. The blades may be operated by means of a piston and cylinder device driving a pair of links connecting the piston to the two blades at positions off-set from the pivotal axis of the two blades.

Abstract: A shear attachment is provided with fixing means so that it can be replaceably mounted in place of a bucket on the end of an arm of an excavator, the attachment comprising a pair of co-operating shearing jaw members, one of which is attachable to the arm of the excavator and carries a piston and cylinder device for actuating the other jaw member.

Abstract: A delimbing shear attachment for a moveable boom mounted on a motorized or self-propelled vehicle having an operator's station such as a cab or platform from which the operator controls movement of the boom and attachment and the application of hydraulic power to an attachment mounted on the boom. The shear attachment comprises a mounting frame detachedly secured to the boom, an anvil member rigidly connected to said mounting frame and a cutting member pivotally connected at one end to the mounting frame and having a cutting edge disposed in cooperating relation with the anvil member. A double-acting hydraulic cylinder is operated in one direction to open the shear to receive a tree limb or other workpiece to be sheared and in the other direction to bring the cutting edge into engagement along its entire length with the anvil to shear off the workpiece.

Abstract: Branch cutter for a tractor having a material handling element, such as a bucket. The branch cutter is attached to the bucket and comprises a fixed blade, a movable blade, and a fluid driven actuator operatively connected to the movable blade toward and away from the fixed blade for cutting a branch which is placed between the blades.

Abstract: The invention comprises a hydraulic rescue tool which is useful in extricating victims form traffic accidents. The tool can perform three basic functions: pushing, pulling, and cutting. The tool comprises a pair of pivotably mounted arms connected to each other within a common yoke. The arms are forced together or apart by a hydraulically operated piston. Attached to the arms are a pair of cutting blades. The arms are made of a graphite laminate composite material for increased strength.

Abstract: A heavy duty shear for a backhoe including a lower jaw having a shear blade and a guide blade lying along each other and tied together at their outer ends, an upper jaw defining a shear blade and having a wear plate or guide to engage and slide along the guide blade of the lower jaw, the guide blade of the lower jaw having its edge recessed below the level of the cutting edge of the shear blade of the lower jaw.

Abstract: A gripper device is affixed to the first and second blades of hedge and shrubbery trimmer gripper shears in a manner whereby the gripper device does not interfere with normal interaction of the blades in cutting shrubs, hedges, vegetation, or other material and retains severed material on the blades until the severed material is manually removed.

Abstract: A material handling and shear attachment for a backhoe enables the backhoe to be used in grasping and moving structural beams, pipes, cables, and the like and pivotally positions a cutting blade in the form of a hook on the end of a backhoe boom for actuation by a piston and cylinder of the backhoe. A fixed blade is secured to the boom forming a shear point between the movable cutting blade and the fixed blade. The fixed and movable blades are shaped and positioned relative to their pivotal engagement to move objects being sheared toward the blades pivotal engagement rather than away therefrom as in the prior art shears.

Abstract: A rail breaking attachment for a backhoe, the bucket of which has been removed which enables the backhoe to be used to grasp rail material by pivotally positioning a blade in the form of a hook on the end of a backhoe boom for actuation by a piston and cylinder of the backhoe. A fixed pair of spaced parallel rail engagement members is secured to the boom forming support points on which the rail rests as the movable blade is passed therebetween.

Abstract: A self-contained material handling and shearing attachment for a backhoe enables the backhoe to be used in grasping and moving structural beams, pipes, cables, and the like, and pivotally positions a cutting blade in the form of a hook on the end of a backhoe boom for actuation by a self-contained piston and cylinder assembly. A fixed blade is secured to the attachment forming a shear point between the movable cutting blade and the fixed blade. The fixed and movable blades are shaped and positioned relative to their pivotal engagement to move objects being sheared towards the blade's pivotal engagement rather than away therefrom and does not require the use of the piston and cylinder of the backhoe as is known in prior art shears.

Abstract: A plier-type wire cutting tool providing a shear cut of wire such as is used by orthodontists. This wire is used with appliances mounted in the mouth of a patient. This plier is a box-type tool with pivotally connected jaw and handle portions with one jaw having a leaf spring secured to said jaw. This leaf spring is bent at right angles with the short leg of the leaf spring mounted in a slot in the jaw. The other leg of the leaf spring is disposed so as to be movable in a relief formed in this jaw and with this extending leaf portion engaging and retaining said wire that is between the shelf of the opposing jaw and the leaf spring. The cutting edges of the tool are moved toward, to and past each other to cut a wire therebetween with the severed end gripped by the leaf spring and shelf until the jaw ends are moved apart.

Abstract: This rescue tool includes a body, providing a cylinder and a piston extending outwardly of the cylinder, and a pair of jaw members pivotally connected to the body by link members and the piston. The jaw members include cooperating outer prying portions, inner cutting portions and intermediate shearing portions. The cutting and shearing portions include arcuate edges defining overlapping points and the prying portions are thickened to facilitate wedge action. The tool can be powered by a bi-directional motor, reservoir and battery system or can be powered directly from a wrecker motor vehicle system.

Abstract: A grapple shear having a lower jaw with three widely spaced forwardly projecting tines, the outer tines having upper ends mounting the upper jaw with a pair of tines to swing into interleaving relation with the tines of the lower jaw, the outer tines of the lower jaw having forwardly opening angular bights, a swingable shear blade on the central tine of the lower jaw which carries an upright mast and a hydraulic ram on the top of the mast and driving the shear blade downwardly in a cutting motion.

Abstract: A material handling and shear attachment for a backhoe enables the backhoe to be used in grasping and moving structural beams, pipes, cables, and the like, and pivotally positions a cutting blade in the form of a hook on the end of a backhoe boom for actuation by a piston and cylinder of the backhoe. A fixed blade is secured to the boom forming a shear point between the movable cutting blade and the fixed blade.

Abstract: A harvesting tool to be used, principally, for the harvesting of grapes comprising a scissors device wherein the operating head of the scissors device includes a cutting blade. The operating head of the scissors device is to include structure to facilitate the grasping and holding of the stem of a cluster of grapes during the time of the cutting of the stem, at which time the user is to move to deposit the cut cluster of grapes to a particular desired area.

Abstract: A shear or like scissor-type tool, especially an electric cable cutter, having two blades at least one of which is movable and a pivot about which this blade moves in a scissor-type action. The device is provided with a mechanism for increasing the pressing force at the blade pivot in response to the instantaneous cutting resistance with this pressing force on the blades being relieved upon or prior to opening of the cutter.

Abstract: A suture cutter comprising a member and a blade, said blade having a knife edge and a back remote from said edge, said blade being adapted to shearingly contact said member,said member having a depth and comprising an arm, an element, and a slot therebetween, said slot having a portion adapted to receive a suture but being too small to permit a knot in said suture to pass therethrough, whereby shearing contact between said member and said blade cuts said suture leaving a stub on the side of said suture away from the tissue in which said suture is tied substantially equal in length to said depth.Variations of the foregoing device are also disclosed, including forms in which the motion between the member and the blade is obtained by a scissor-like action as well as by a tweezer-like action; in addition, an embodiment wherein the handles or gripping area of the device is in a different plane from the working end. There is also disclosed a combination of the present invention with a surgical needle holder.

Abstract: A suture remover comprising a shearing portion having a cutting edge, and a blade having a cutting section. The cutting edge and cutting section are adapted to shearingly contact one another by moving toward and away from each other. An element is provided on the shearing portion which has a contact area. The element is affixed to the shearing portion at the end of the element remote from the contact area and has at least one bend in a plane substantially parallel to the plane of the shearing portion and adjacent the end. The contact area overlies the cutting edge or extends beyond it in the direction of the cutting section. At least a part of the cutting section is adapted to be placed between tissue and a suture therein, whereby bringing the cutting section into shearing contact with the cutting edge causes the suture remover to both cut and grip the suture for easy removal.

Abstract: The invention relates to cutters, and provides a cutter comprising a base and a cutting-blade carrying arm. The base and the arm may be parts of a one-piece plastic molding which incorporates a connection between the base and the arm, which connection permits movement of the arm relative to the base during the cutting action. The arm may carry at least one flexible member which engages the material to be cut prior to engagement of the material by the cutting blade, whereby the material is restrained from movement during the cutting action.

Abstract: A hydraulic shear for a backhoe. The backhoe includes a boom and a forwardly extending stick pivotally mounted to the boom. The hydraulic shear pivotally mounts on the forward end of the stick and includes a first forward shear blade, an opposing second configured forward shear blade, and a configured rearward shear blade which is pivoted to interleave between the first and second forward shear blades. The configured rearward shear blade of the hydraulic shear is mounted so that force from a hydraulic cylinder acting against the configured rearward shear blade is transferred by a factor of two to at least one point on the curvature of the configured rearward shear blade to shear a workpiece at a predetermined preferred position in the hydraulic shear.

Abstract: A back hoe attachment for cutting and moving cables or the like pivotally positions a cutting blade and hook on the end of a back hoe boom for actuation by a piston and cylinder of the back hoe. A fixed blade is secured to the boom forming a shear point between the movable cutting blade and the fixed blade.

Abstract: A holding part is affixed to the holding member of pruning shears and extends perpendicularly from the backing surface of said holding member along a blunt corner edge thereof. A clamping part is slidably mounted on the facing surface of a blade of the pruning shears for movement in directions toward and away from the cutting edge of the blade. The clamping part extends perpendicularly from the facing surface of the blade and has the same configuration as the holding part. The clamping part is spring-biased in position spaced from the cutting edge of the blade in a manner whereby when the shears are fully closed after severing a stem, the clamping part and the holding part securely clamp the severed stem between them.

Abstract: An improved vegetable and flower snip apparatus for cutting the vegetable okra and thorny type flowers which includes a scissor-type snip having a mating set of nose elements at the terminal end thereof from the handle portion so that there are blade cutting elements and which provide for holding the stem in place while being snipped or sheared.

Abstract: A grapple for a backhoe and having a cutter secured to the back side of the lower jaw of the backhoe, the cutter having stationary cutting anvils on the grapple jaw and a swingable cutter jaw to punch through the automobile wheel and shear through the rim flanges, tire and bead cables of the tire.

Abstract: A cutting device particularly adapted for cutting plastic tubing is provided and includes a first and second elongated handle member. The handle members are pivotally secured together at one end so that the handle members are movable relative to each other between an open and closed position. Semicircular and facing recesses are formed along the inner side of the handle members which correspond in shape to the outer periphery of the plastic tubing which is to be cut. Thus, with the plastic tubing between the handle members the handle members are moved to their closed position which clampingly engages the plastic tubing between the semicircular recesses. A cutting blade is pivotally secured to one of the handle members so that the cutting blade can be moved across the handle members to cut the plastic tubing.

Abstract: A cutting apparatus for a surgical thread which comprises a thread-like body and a plurality of projections formed at regular intervals in the thread-like body. The cutting apparatus includes a holder for the surgical thread through which the surgical thread is inserted, a cutting member arranged adjacent to the holder, an actuating rod for actuating the cutting member, and a trigger for driving the actuating rod. Even when the blood vessel is ligated with the surgical thread in the interior of the human body, the surgical thread can be easily cut by the cutting apparatus in the interior of the human body.

Abstract: A plant cutting and plant lifting device that includes a shearing blade and a hand actuated cutting and grasping member, thereby eliminating or substantially reducing the bending of the operator's body.