Abstract: A snipper tool device is disclosed for snipping J-channel. The device includes a first member having a first and a second end and a second member having a first and a second extremity. The first and second members are pivotally secured to each other about a first axis which is disposed between the ends of the first member and between the extremities of the second member. The first end of the first member defines a shearing edge and the first extremity of the second member defines a cutting edge, the shearing and cutting edges cooperating together for snipping the J-channel. Also, the second end of the first member defines a hand grip and the second extremity of the second member defines a finger grip, the hand grip and the finger grip being arranged such that when the hand grip and the finger grip move towards each other, the shearing edge and the cutting edge move towards each other for snipping the J-channel.

Abstract: A reversible, indexable blade insert is removably secured to an anvil of a shear blade by one or more bolts through central bores in the blade insert. Each central bore includes recesses at each end. A support member is provided within the recess of the blade insert central bore on the inner side of the blade insert adjacent the anvil. The support member eliminates the unsupported section of the bolt in the recess, provides a positive blade insert location, and increases the blade insert to anvil surface area friction.

Abstract: A hose cutter tool includes scissor arms joined at a pivot point having opposed jaws, one of which includes a cutter blade and the other of which defines an arcuate support surface to hold tubing material. As the arms are manipulated, the blade descends through and cuts the tubing material.

Abstract: An attachment for a construction machine is disclosed The attachment includes: a frame body; a first frame member attached to the frame body; a second frame member attached to the frame body in opposing relation with the first frame member. The first frame member and the second frame member are provided at the respective opposing inner surfaces with cutting means and crushing means. The first frame member and/or the second frame member are(is) movable toward each other for the engagement therewith. The first frame member or the second frame member is further provided with a hydraulic breaker having a chisel.

Abstract: A device for cutting a detonating cord having an explosive core is provided. The device includes a detonating cord holding member having a cord holding portion, such as an aperture or recess, configured to closely receive the detonating cord so that the detonating cord is held in place relative to the holding member. The cord holding member also has a side surface from which the detonating cord projects when the detonating cord is held in the cord holding portion prior to cutting. A blade arm is pivotally mounted to the cord holding member. The blade arm carries a sharpened blade and is pivotal between an open and closed position. The blade passes over the cord holding portion in close proximity to the side surface so that the detonating cord is cut by the blade as the blade is passed over the cord holding portion.

Abstract: A heavy-duty shearing and crushing demolition apparatus for attachment to a boom structure and hydraulic system of an excavator. The apparatus includes a lower jaw with a primary blade, an upper jaw with primary and secondary blades oblique with respect to each other, and a shearing and crushing tip on the upper jaw secondary blade with a shearing point, a crushing point, and a support and shearing tip blade portion between the shearing point and the crushing points. This structure exposes the crushing point for crushing when the upper jaw is open from the lower jaw with the shearing tip out of the way and also exposes the shearing tip for shearing when the upper jaw is closing into the lower jaw. This permits shearing beginning at the shearing tip and shearing rearwardly. The support and shearing tip blade portion supports the workpiece while shearing it, producing a substantially flat non-contoured or twisted workpiece.

Abstract: A portable, hydraulically powered rescue tool has a cutting head, a hydraulic motor, a battery-powered hydraulic fluid pump, and controls necessary for operation of the tool. The cutting blades are shaped so that, when the tool is in use, the blades take bites of material out of the object to be cut.

Abstract: A plier-like tool for removing a face mask from a protective sports helmet worn by an athlete in such a way as to minimize the risk of exacerbating an existing spinal injury. The tool has a buttress portion and a blade portion pivotally connected to each other. The blade portion has a sharpened blade which, upon application of pressure to hand grips, slices through the plastic clips that are normally used to attach such face masks to the helmet. The buttress portion includes a cut-out portion and transverse slot that engage the metal bars of the face mask to prevent the tool from slipping off the bars, and the blade portion includes a notch to ensure that the blade portion engages the plastic clips.

Abstract: Scissors has a first scissor member and a second scissor member which are pivotally coupled to each other. The scissors comprises a blade formed with and extetending along at least one of the scissor members and a fastening memeber is provided with at least a tip portion of the other one of the scissor members to fasten the associated sciccor member to a material to be cut.

Abstract: A blade stabilizer device for a heavy-duty material handling demolition tool for shearing and crushing scrap material which includes a lower jaw connected to the boom structure of a hydraulic system of an excavator and has an upper jaw pivotally connected and closeable upon the lower jaw at a pivot point. The blade stabilizing device consists of a wear guide pad supported by the lower jaw adjacent the pivot point slidably engaging the upper movable jaw to keep the upper jaw in close engagement with the lower jaw. The wear guide pad is mounted behind the pivot point. A second wear guide pad may be mounted in front of the pivot point on the opposite side of the upper jaw to cross-brace the upper jaw.

Abstract: A demolition shear is attachable to a mobile machine by one of two brackets. The brackets engage, alternatively, two of three pairs of mounting holes on the shear so the shear can be mounted at its proximal end to the stick or at its side to the boom of the machine.

Abstract: A demolition shear has a pair of pivotably movable elongated jaws each having a pivot portion and an elongated jaw portion extending therefrom. The lower jaw portion has a cutter side wall, a guide side wall and an outer end wall, and the cutter side wall has an upper working surface with a generally V-shaped configuration, and a recess providing a blade seating shoulder extending parallel to the upper surface. The end shoulder at the proximal end intersects at an obtuse angle with the blade seating shoulder, and defines a reference plane. Seated on the shoulder are abutting; elongated rhimboidal lower cutter blades with end faces extending parallel to the reference plane. The outer end wall has an inner surface portion has a blade seating shoulder on its inner surface on which is seated a cross cutter blade. The guide side wall has a recess adjacent the outer end wall which provides a blade seating shoulder on which is seated a guide blade.

Abstract: A hose cutter tool includes scissor arms joined at a pivot point having opposed jaws, one of which includes a cutter blade and the other of which defines an arcuate support surface to hold tubing material. As the arms are manipulated, the blade descends through and cuts the tubing material.

Abstract: A distal end cutter having a flush cut and hold feature. The distal end cutter includes a pair of jaw members having respective cutting surfaces for cutting a wire, such as an archwire of an orthodontic appliance. Disposed adjacent to one of the cutting surfaces is a flat, resilient jaw portion which holds a cut off segment of the archwire. As the flat, resilient jaw portion may be disposed directly adjacent to the cutting surfaces during the wire cutting operation, very small wire segments may be cut and held by the device to prevent ejection of such wire segments into the mouth of a patient. In the preferred embodiment, the resilient jaw portion is a spring plate removably mounted to one of the jaw members.

Abstract: Concrete crushing tongs comprise a frame-shaped first jaw of tongs (1) and a second jaw of tongs (2) which is connected to the first jaw of tongs (1) at a pivot joint (3). The two jaws of tongs (1, 2) each comprise concrete crushing portions (13, 18) with projections (14, 19). The concrete crushing portions (13, 18) of both jaws of tongs (1, 2) each project beyond cutting edges (11, 17) of the two jaws of tongs (1, 2) in a direction towards the corresponding other jaw of tongs (2, 1). Thus, the concrete crushing function of the concrete crushing tongs is separated from the function of cutting the reinforcement.

Abstract: A reversible, indexable blade insert is removably secured to an anvil of a shear blade by one or more bolts through central bores in the blade insert. Each central bore includes recesses at each end which are adapted to receive a head of the bolt therein. A support member is provided within the recess of the blade insert central bore on the-inner side of the blade insert adjacent the anvil. The support member eliminates the unsupported section of the bolt in the recess, provides a positive blade insert location and increases the blade insert to anvil surface area friction.

Abstract: A heavy-duty shear adapted to be attached to a backhoe includes a fixed blade member with at least one blade insert attached to the fixed blade member. A movable blade is pivotally attached to the fixed blade with at least one blade insert attached to the movable blade. A piercing tip is attached to a front end of the movable blade with the blade inserts positioned between the piercing tip and the pivot point. The piercing tip extends to blade inserts of the moveable blades. The piercing tip may include a front end having a projection on a lower side thereof along a centerline of the piercing tip. The piercing tip of the present invention is designed to more easily sever material to be cut by the shear with the primary cut of the piercing tip being substantially perpendicular to the cut achieved by the blade inserts of the shear.

Abstract: A wire cutting tool includes a jaw defining a cutting edge and at least one cavity disposed in sufficient proximity to the cutting edge so that a wire being cut by the cutting edge is swaged into the cavity and held therein after the wire has been cut.

Abstract: One jaw of a heavy duty shear having relatively pivotal jaws is provided with piercing and cutting tip blades which provide linear cutting edges extending transverse to the pivot axis of the jaws and piercing edges extending parallel to the pivot axis. Each blade includes a plurality of cutting edges and piercing edges, and the blades are adapted to be both re-oriented and reversed with respect to an initial mounting disposition on the jaw for selectively positioning the cutting and piercing edges relative to cooperable blades on the other jaw of the shear.

Abstract: A two-piece shear knife replaces a conventional one-piece shear knife for use in a power shear. The two-piece knife includes a main body with a cutout formed by first and second inner surfaces. A blade insert with a single cutting edge is seated in the cutout. One of the inner surfaces of the cutout and the complementary abutting insert surface are angled toward a confronting surface to direct shearing forces from the cutting edge diagonally inwardly toward the inner corner of the cutout and into the main body. This efficiently transfers shearing forces and reinforces seating engagement of the insert. The two-piece construction of the shear knife allows the main body to be made from a less expensive, less wear resistant material.

Abstract: A shearing machine includes a sickle shaped upper jaw interacting scissors fashion with a generally linear lower jaw. The distal ends of the sickle shape begin shearing from opposite ends of a plate-type object at about the same time, with shearing progressing toward a central point. A transverse member and a return leg form, with the lower jaw, a J-shaped device. The upper jaw slides within the return of the J during the entire cutting operation, thereby overcoming any tendency for jaw spreading between the linear and sickle shaped cutters. A front cutting insert in the transverse member and a return cutting insert in the return leg, interact with a tip of the upper jaw to pierce, and then cut, a plate which is longer than the throat of the shearing machine, thereby enabling shearing of large plates. The initial piercing takes place simultaneously at the tip of the upper jaw and at an upward-directed point on the front cutting insert.

Abstract: A forestry cutting, mulching and clearing attachment for a hydraulic excavator that is used for clearing sloped grounds, ditches, and culverts. The device includes two mating jaws which are substantially rectangular in shape and include a plurality of mating cutting surfaces. The clearing apparatus is designed to cut standing trees and brush using both longitudinally and laterally oriented cutting surfaces. In the preferred embodiment, the first jaw includes a curved blade and a pair of cutting blocks, while the second jaw includes a pair of curved blades and a cutting block. Each jaw has a pair of fixedly attached brackets which are used to pivotally mount the jaws to the boom structure of the hydraulic excavator. The jaws have a mutual pivoting point attached to the central boom of the excavator, and peripheral pivoting points movably attached to the control rams of the hydraulic cylinders. The hydraulic cylinders may be actuated to open and close the jaws in order to cut the debris into mulch.

Abstract: A cutting pliers for cutting implant plates features two handgrips (10) joined via a hand-grip pivot (11), which handgrips actuate by way of leverage pivots (14) a pliers holding jaw (15) and a pliers punching jaw (16). Formed on the pliers holding jaw (15) are holding pins (19, 20, 21) adapted for entering matching recesses of the implant plates being cut. A cutting device (18) is fashioned on the pliers punching jaw (16). Implant plates of different implant systems, with half-round, burrless cuts, can be cut with said cutting pliers.

Abstract: Concrete crushing tongs comprise a frame-shaped first jaw of tongs (1) and a second jaw of tongs (2) which is connected to the first jaw of tongs (1) at a pivot joint (3). The two jaws of tongs (1, 2) each comprise concrete crushing portions (13, 18) with projections (14, 19). The concrete crushing portions (13, 18) of both jaws of tongs (1, 2) each project beyond cutting edges (11, 17) of the two jaws of tongs (1, 2) in a direction towards the corresponding other jaw of tongs (2, 1). Thus, the concrete crushing function of the concrete crushing tongs is separated from the function of cutting the reinforcement.

Abstract: A tree pruner consists of a fixed jaw member, a movable arm and a movable jaw. The fixed jaw member has a jaw portion and a fixed arm. The movable jaw has a blade and a crank. The fixed jaw member and the movable jaw are fastened pivotally such that the blade of the movable jaw and a cutting portion of the fixed jaw member cooperate to execute efficiently the pruning of a tree twig when the movable arm is moved towards the fixed arm of the fixed jaw member.

Abstract: A shearing machine includes a generally hexagonal shearing blade and a generally rectangular shearing blade on each of an upper and a lower jaw. The hexagon forms a point at the forward end of the hexagonal shearing blade dividing a main shearing edge from an auxiliary shearing edge. A hexagonal edge at the rear of the hexagonal shearing blade forms a relief edge which unloads shearing forces to permit full shearing force to be directed to the rectangular shearing blade during a final stage of shearing a sheet of material. An end of the rectangle is preferably abutted to a portion of the relief edge, without provision for a gap or clearance therebetween. Embodiments are disclosed in which the shape of the shearing blade is non-hexagonal. In one disclosed embodiment, the shape of the shearing blade is non-polygonal, in that at least one edge is a curve.

Abstract: Scissors has a first scissor member and a second scissor member which are pivotally coupled to each other. The scissors comprises a blade formed with and extetending along at least one of the scissor members and a fastening memeber is provided with at least a tip portion of the other one of the scissor members to fasten the associated sciccor member to a material to be cut.

Abstract: A cutting device, particularly for cutting metals or concrete, is mounted at the end of a working arm (1) of a mobile machine. The device comprises on the one hand an assembly (2) adapted to be secured to the working arm (1) and, on the other hand, a complementary member (8) mounted and guided in rotation on the assembly. The device comprises a rotational guide coacting with a shock absorbing member in the closed position corresponding to cutting and a pressure device ensuring a predetermined lateral spacing of the working ends, so as to prevent lateral spacing of the cutting ends (C) of the device.

Abstract: A concrete crusher has cutting shears with a first cutting arm forming an additional arm on one of the jaws of the breaker tongs and a second cutting arm rigidly joined to the frame of the concrete crusher. An hydraulic piston/cylinder unit drives the jaws such that the first cutting arm is in an open position relative to the second cutting arm when the jaws are in an open position.

Abstract: The shearing machine is designed to surely shear an object to be sheared with less amount of power without causing slips. A plurality of lower shear blades mounted on a lower jaw member are arranged such that the arrangement of the cutting edges forms a convexity curved downward. The front edge portion of each shear blade inwardly protrudes from an adjacent rear edge portion of each forward adjacent shear blade. A plurality of upper shear blades mounted on an upper jaw member are arranged such that the arrangement of the cutting edges forms a convexity curved upward. The front edge portion of each shear blade inwardly protrudes from an adjacent rear edge portion of each forward adjacent shear blade.

Abstract: A plurality of pairs of interengaging shearing blades on upper and lower jaws are maintained at distances and tilt angles from a reference line which separates the shearing into discretely acting zones. The distances and tilt angles produce vertical steps between ends of adjacent pairs of shearing blades relieve shearing forces to direct the shearing forces to other pairs of shearing blades, where the shearing force is needed. All shearing blades are identical and interchangeable, whereby only a single type of shearing blade must be manufactured and stocked. In addition, each of the four corners of each shearing blade is installable in a position for active operation, thereby prolonging the lives of the shearing blades. Longitudinal clearances between adjacent ends of shearing blades reduces shearing forces required as the shearing point passes off the ends of blades into the vertical steps.

Abstract: A pair of snips including first and second, opposed, elongated members, each member comprising a jaw at a front end portion thereof, a handle at a rear end portion thereof, and a midportion where the members cross over each other. A pivot unites the midportions for scissor-like movement of the handles and jaws about the pivot. The snips also includes a gripper biasely connected to the handle of one of the members to retain a portion of a workpiece severed by the snips. The first member includes a metal plate having a forwardly extending blade which comprises one of the jaws and a rearwardly extending tang. According to the invention, at least the handle of the first member and gripper are made of a moldable material molded onto the metal plate, such that the handle of the first member is molded onto the tang of the metal plate and the gripper is integral with the first member and molded onto an outer surface of the plate.

Abstract: A pair of arms (2a, 2b) is rotatably supported on a support through pins (8) at their intermediate portions. A front portion of each arm extending from the portion supported by the pin (8) to the distal end has a distal end formed into a fork comprising a plurality of prongs. The claws (7a, 7a', 7a, 7b, 7b) are attached on respective distal ends of these plural prongs. Only a specific claw (7a') of the claws (7a, 7a', 7a) of one arm (2a), having a pointed conical distal end, is positioned to protrude inward farther than the remaining claws (7a, 7a) and serves to generate deep and shallow cracks where it is forcibly applied to material to be crushed. Shearing blades (10a, 10a) are provided on the front portions of respective arms (2a, 2b) in the vicinity of the portions rotatably supported by the pins (8).

Abstract: A double scissors cutter for cutting a workpiece into substantially rectangular pieces is provided which comprises a pair of jaw members adapted to be opened and closed about a pivot shaft. Each of the jaw members includes, attached thereto, a cutting blade on an abutting surface thereof, the cutting blades being of a substantially U-shaped configuration. The cutting blades are arranged to be inter-engaged with each other with one of the cutting blades being positioned within the other of the cutting blades, so that a workpiece positioned between the cutting blades may be cut in a scissors cutting movement of the jaw members to form cutout pieces of a substantially rectangular configuration. Protuberant structure is carried on one of the jaw members and extends beyond a plane in which the cutting edge of the associated cutting blade lies.

Abstract: A pliers having increased gripping capacity due to a pincer point at its tip and a center groove located inwardly from the tip into which a workpiece can be deformed so as to implicate possible shearing resistance to separation of the workpiece from the tool, yet possessing greater control sensitivity for grasping very small objects, including flat sheet material, due to the pincer point on the tip thereof.

Abstract: A pair of shears comprises a driving blade, a follower blade and a pair of grips. The tang of the follower blade connects the front end of a grip. The rear end of the driving blade connects a link which connects the driving grip. The middle portion of the zigzag follower blade connects the driving blade. A curved fang is in the front portion of the follower blade. A clip seat is connected to the curved fang. Two rows of holding serrations are disposed on the surface of the clip side of the clip seat. The clip edge of the clip seat has an inner flange with two notches. An outer flange is disposed at the outer edge of the clip seat. The outer flange and the inner flange 341 define an upper recess on the upper surface of the clip seat. The upper recess receives the curved fang.

Abstract: The invention relates to anvil shears for surgical purposes, particularly for laparoscopic operations. The shears have an anvil (10) and a blade (40) pivotably fitted thereto, which is closed against the anvil by means of an operating rod (30) displaceable in the longitudinal direction of the shears. For improving the cutting action, according to the invention the blade (40) is displaceably mounted on the anvil in its longitudinal direction (41) and is subject to the action of a force forcing the blade into the distal advanced position. The force exerted for closing the blade (40) with the operating rod (30) is opposed by the pretensioning force (54), so that on encountering a material to be cut a cutting movement is performed in the longitudinal direction (41) of the blade.

Abstract: A heavy duty shear attachable to the boom of an excavator comprises a fixed lower jaw and a movable upper jaw driven by a hydraulic cylinder. To overcome jams, the cylinder is provided with hydraulic fluid at a higher pressure in the open direction than in the close direction.

Abstract: A heavy duty cutting shear has first and second elongated jaws pivotably connected adjacent their inner ends for movement relative to each other between open and closed positions, and opposed working faces. The working face of the second jaw provides a recess into which the working face of the first jaw when the jaws are moved into the closed position. Each jaw has a pair of side cutting members extending along the sides of its working face and an end cutting member extending transversely of the side cutting members adjacent the jaw outer end. The side cutting members of the first jaw having inner and outer portions which intersect at an included angle of about 120.degree.-160.degree..

Abstract: A replaceable blade assembly is used to secure tool blades to the jaws of a material handler and comprises a holder secured to the jaw and a blade insert which is releasably secured thereto. The holder has a face with an elongated intermediate portion, an inclined end portion adjacent its outer end, a channel extending along the elongated intermediate portion, and a recess in the inclined end portion. The blade insert has a first face for mounting against the face of the holder with an elongated intermediate portion bearing against the elongated intermediate portion of the holder. A inclined end portion adjacent the outer end of the blade insert bears against the inclined end portion of the holder, and a spine on the elongated portion seats in the channel of the holder. A projection on the outer end of the blade insert seats in the holder recess, and a fastener releasably secures the inner end of the insert to the inner end of the holder.

Abstract: Shearing blades are attached to a lower jaw and an upper jaw which are arranged to be opened and closed in a crossing manner. The lower leading blade 24 and the lower trailing blade 25, both attached to the lower jaw 4, are arranged to form a substantially V-shaped configuration and in a staggered fashion with respect to the shearing plane. The upper leading blade 30 and the upper trailing blade, both attached to the upper jaw 5, are arranged to form a substantially inverted V-shaped configuration and in a staggered fashion with respect to the shearing plane. At least one offset 26 and at least one gap 27 are provided between the lower leading blade 24 and the lower trailing blade 25, while at least one offset 32 and at least one gap 33 are provided between the upper leading blade 30 and the upper trailing blade 31.

Abstract: A fluid application system for the cutting of individual flower stems. A liquid absorbent sponge is attached to the cutting blade of hand held clippers. Opposite the sponge is a compression plate mounted on the jaw of the same clippers so as to restrict the further movement of the extended sponge surface as the blade and anvil are brought together. The water filled sponge is compressed as the stem between the blade and anvil is cut, simultaneously releasing a quantity of water to the cut area and preventing the introduction of air into the flower stem's vascular system.

Abstract: Circular-bladed pruning apparatus with holding action includes a mechanism for securing a severed branch of a plant from the moment the branch is cut until a user chooses to release the branch. A rotatable, indexed, circular blade is included, as well as a handle for operating both the cutting mechanism and the holding mechanism. The present invention may also include shields designed to protect a user's hand and arm from injury resulting from harmful plant contact.

Abstract: A so-called rescue spreader is constructed with a pair of replaceable jaws that are mirror images of one another and are operatively positioned back-to-back. Each jaw is generally a triangle having a back side and a front side, with both sides extending from a base and converging at a tip where the sides define an included angle of approximately 20.degree. to 30.degree.. Corrugations on the back side are provided to reduce slippage. The front side along its half length extending from the tip is provided with a plurality of teeth and a circular cam is provided along the other half length of the front side.

Abstract: Gripping cutters have either shearing blades or blade-and-anvil cutting members. Attached to one lateral side of each cutting member is a movable jaw arranged to grip the elements being cut when the cutter is closed and to release the elements when open. Each jaw has a pair of elongate parallel pins extending from its rear face. A pair of supports affixed to each lateral side have an aperture for slidably receiving a pin. A compression spring on the pin forces the jaws together and an adjustable stop on the pin limits the extent of the jaw movement so that the relative position of the blades at the moment of release of the cut elements may be adjusted. Resilient jaw faces may be provided for gripping small and large branches simultaneously.

Abstract: A shearing apparatus coupled to an excavator or similar heavy machinery for severing metal structural materials has a fixed blade attached to a boom and a cutting blade pivotably attached to the fixed blade. An outrigger is secured to the fixed blade in a position to support an end of the material during shearing. The outrigger transfers a rotational torque to the fixed blade to urge it toward the movable blade so as to prevent blade separation during shearing.

Abstract: A pair of garden shears is provided with a debris catcher that is attached to the back edge of each blade. Each debris catcher is transversely curved to extend over the blade and terminate in an upper edge that faces the upper edge of the other catcher. The catcher upper edges abut with one another to grip plant material therebetween and hold such plant material after it is cut by the blades. In addition, the transversely curved body of the catcher forms an upwardly facing, upwardly curved trough that is effective to catch small amounts of plant debris when the shears are being used in a vertically inclined position. The catchers are preferably molded from a plastic material and are flexible relative to one another to accommodate larger amounts of plant material.

Abstract: A lawn and garden tool for removing weeds and dandelions includes a cutting blade fixedly secured to the distal end of a shaft and a pivotable claw arranged to have its serrated edge pivotably closed against a flat surface of the blade, The claw has two spaced pivot arms secured to opposite sides of the shaft to evenly distribute the closure force, A linkage rod is actuable by a trigger grip secured at the proximal end of the shaft to permit selective closure of the claw in opposition to a bias force exerted by a compression spring disposed for protection in a recess defined in the pistol grip handle.

Abstract: The object of the invention is to provide an attachment heavy duty shear of reduced weight. This shear has a single-row upper jaw and a single-row lower jaw, with the upper jaw being driven by a built-in hydraulic cylinder to open and close with respect to the lower jaw. The forward end of the lower jaw has a 7-configured guide member for precluding a lateral displacement of the upper jaw in shearing. This construction provides for reduced overall weight and positive grip and shearing.

Abstract: A demolition tool for attachment to the boom structure and hydraulic system of a hydraulic excavator having a pair of jaws pivotally connected together as to be mountable on the frame of the tool by a movable pin so that the jaws may be placed with other jaws having other forms of demolition characteristics. The jaws may be a shear for steel or other structural material, including concrete, and the jaws may be a concrete crusher, a rock or coral breaker, a wood shear, a plate shear, or other form of demolition device. Both jaws are swingable and independently swingable, operated by a common manifold supplying hydraulic fluid to the cylinders. The jaws swing through operational arcs and are arranged so that the direction of thrust from the cylinders is tangential to the pin connecting the cylinders to the jaws at a location intermediate the ends of the operational arcs.