Abstract: A pipe cutter includes a slide slideably engaged in a housing and a cutting blade secured to the slide. A hand grip may move the cutting blade forward gradually for cutting a pipe. The housing includes one or more openings for engaging with one or more fasteners and for allowing the fasteners to be engaged into the housing and to secure the cutting blade to the slide without disassembling the whole housing. A retaining plate may be secured to the slide and engaged with the cutting blade for securing the cutting blade in place. A panel includes one or more screw holes for engaging with the fastener and for allowing the fastener to further secure the cutting blade and the slide together.

Abstract: Simple, inexpensive and efficient tip cutting assemblies for allowing an operator to cut the tip of a fresh cartridge of caulk prior to insertion in the barrel. The tip cutting assemblies are provided in the context of two general types of caulking guns having either a metal enclosed frame or single piece molded plastic open frame. In one embodiment for a molded open-frame gun, the cartridge tip cutting assembly includes a cutting bracket attached to the frame and having an aperture there through for insertion of the cartridge tip. The cutting assembly also includes a blade assembly attached to the trigger and extending a blade outwardly between the frame and cutting bracket. Another embodiment for a closed metal-frame gun includes an aperture through a side of the housing for insertion of a cartridge tip, and a tip-cutting member formed with a through-hole to pass the plunger shaft and riding thereon within the housing.

Abstract: A removable attachment for use with a hand-held tool is disclosed. The tool comprises a housing and a cutting blade mounted therein for continuous reciprocating movement during operation. The attachment comprises a work piece receiving member pivotally mounted to the tool housing. An adjustable clamping member is pivotally mounted to the work piece receiving member. An adjuster, movable between an engaged and a disengaged position, is operably connected to the clamping member for adjusting the clamping member so as to clamp a work piece positioned on the work piece receiving member for operation thereon by the cutting blade. A quick release mechanism is provided for quickly moving the adjuster between its engaged and disengaged positions.

Abstract: A die structure for use in a tool which crimps or cuts a workpiece between relatively moveable jaws of the tool on which the die structure is securable is particularly structured for durability when used to severe high tensile strength cable such as guy wire and other multi-strand cable. A pair of die structures in accordance with the invention each has a cutting edge formed on a die body, and in a preferred embodiment, the cutting edges have aligned engagement surfaces which are flat and elongate to provide a pinching action which fractures or severs the workpiece usually before the cutting surfaces meet. The flat cutting surfaces provide improved durability over sharp cutting edges, and are preferably heat treated to promote further durability in severe cutting surface.

Abstract: A device for cutting pipe includes support structure for contacting a pipe to be cut; an elongate cutting member associated with the support structure defining a loop for enclosing a pipe to be cut; and guide structure for reciprocally guiding the cutting member along a path relative to the support structure, whereby reciprocating the cutting member cuts the pipe.

Abstract: A pipe cutter includes a jaw formed on one end of a handle and includes a cutter blade pivotally coupled to the handle and having a cutter edge adapted to be moved toward the jaw for cutting a pipe. The cutter blade includes a number of ratchet teeth formed in the bottom peripheral portion and includes a depression having two end portions. A handgrip includes an actuator for engaging with the ratchet teeth and for rotating the cutter blade. A pawl may prevente the cutter blade from rotating in the reverse direction. An adjusting member is pivotally coupled to the handle and includes a protrusion slidably engaging with the depression of the cutter blade and engageable with either of the end portions of the depression for adjusting the distance between the cutter edge and the jaw.

Abstract: The pelvic bone splitter (10) has a shaft (12) with a slot (18) and a knurled surface (26) on its free end (24). A first end (34) of a blade (14) is pivotally retained in the slot (18) by a pivot pin (16). Cutting edges (40, 42 and 44) on the blade (14) are movable into the slot (18). During use, a free end (24) of the shaft (12) is passed under the pelvic girdle (64) and out through an aperture (66) in the hide (68). Pressure is applied to the hand grip (50) to move the cutting edge (42) toward the slot (18), compress the pelvic girdle (64) between the cutting edge (42) and the anvil surfaces (28 and 30) and split the pelvic girdle.

Abstract: An electric cable cutter of the present invention comprises a housing, and a stationary blade and a moving blade which are exposed from the housing. The housing includes a body unit containing an electric motor and a planetary reduction gear driven by the electric motor, a handle unit formed so as to be easily held by hand, and a power source unit to which a battery cartridge is inserted. A switch lever for operating the switch to drive the electric motor is placed on the holding unit. Owing to this structure, a user easily cuts a cable by one hand at the inconvenient places, e.g., at height. This electric cable cutter is portable because of the rechargeable battery, so that this cutter can be utilized in any place.

Abstract: A saber saw assembly includes a vice for clamping an object to be cut and a saber saw having a saw blade to be operated in reciprocating motion. The saber saw is arranged to cut the object with the reciprocating saw blade while the object is clamped by the vice. The vice is in the form of a pipe wrench. The pipe wrench clamps the object when rotated in a clamping direction while releases the object when rotated in a releasing direction opposite to the clamping direction. Accordingly, by using the pipe wrench for the vice, the clamping and releasing operations for the object are simplified to enhance the working efficiency for cutting the object.

Abstract: A removable attachment for use with a hand-held tool is disclosed. The tool comprises a housing and a cutting blade mounted therein for continuous reciprocating movement during operation. The attachment comprises a work piece receiving member pivotally mounted to the tool housing. An adjustable clamping member is pivotally mounted to the work piece receiving member. An adjuster, movable between an operable and a non-operable position, is operably connected to the clamping member for adjusting the clamping member so as to clamp a work piece positioned on the work piece receiving member for operation thereon by the cutting blade. A quick release mechanism comprising a sliding member, movable between a first position and a second position, is provided for quickly moving the adjuster between its operable and non-operable positions.

Abstract: An insulation stripping apparatus is disclosed including a tool housing (1) containing a slitting channel (6) for laterally receiving an insulated conductor (7). A clamping or support body (10) connected with the tool housing carries at least one knife cassette (33) that is laterally adjustable longitudinally of the slitting channel in a corresponding cassette-receiving opening (26) contained in the clamping body between different cutting positions relative to the conductor. The thickness of the knife cassette is appreciably less than the length of the groove, whereby a plurality of knife cassettes may be mounted for simultaneous cutting of the insulation at desired cutting depths and at a plurality of longitudinally displaced positions, respectively.

Abstract: A device which makes it possible to smoke the same cigarette several times by cutting and snuffing burning tobacco from the end of the cigarette, leaving a cigarette butt that can be smoked again. The devices uses a blade (24) and a snuffer (26), movable in a housing attachable to a tray (12) to hold a cigarette. The burning end of a cigarette is inserted into an opening in the blade and snuffer housing through which said blade and snuffer are reciprocally movable. Said blade cuts through the cigarette and detaches the burning tobacco from the cigarette, leaving the butt reconditioned for smoking again. Said snuffer is a bar which snuffs the burning tobacco cut from the end of the cigarette by pressing it against a flange (16) of the housing.

Abstract: A pipe cutter includes a hollow head portion having a first and second ends and a passage way is formed along a longitudinal axis thereof. A jaw element is formed on the first end of the head portion thereby defining a mouth for receiving a pipe to be cut. A blade means has a blade received therein, the blade slidably engaged in the passage way of the head portion. Two handles, each has two ends, one end thereof pivoted to the head portion. A transmission means has first and second ends, the first end pivoted to the blade means and the second ends pivoted to the handles, such that the transmission means converts pivotal movements of the handles into linear movement of the blade means.

Abstract: A hose cutting device comprises an upper seat and a lower seat. The upper seat is provided with a cutting tool and two connection portions, each of which has a retaining slot. The lower seat is provided with a cutting tool receiver corresponding in location to the cutting tool of the upper seat, and with two connection portions, each of which has a projection dimensioned to be received and retained in the retaining slot of the upper seat at such time when the upper seat and the lower seat are caused by hand to move in opposite directions to close on a hose to be cut.

Abstract: A shape memory alloy (SMA) actuator predeformed in compression actuates a cable cutter mechanism. A cable or other item to be cut is placed between an anvil and a movable blade affixed to the SMA element. The SMA element is heated by an electrical resistance heater to cause it to return to its undeformed elongated state, thereby moving the blade against the anvil to compress and sever the cable or other item. Ones of the shape memory alloy actuator have a plurality of parallelly arranged SMA elements, every other one of which is predeformed in compression and intermediate ones of which are predeformed in tension. The elements are coupled end-to-end so that, when they are heated to cause them to return to their undeformed states, their respective elongations and shrinkages combine at the output to produce an actuation that is the cumulation in the same direction of the changes of all the elements. The plurality of elements may be in a side-by-side or concentric arrangement.

Abstract: A rigid housing has an axially extending opening which receives a length of cylindrical tubing therethrough. A measuring assembly is mounted to the housing and has a circular friction wheel which is rotatable about an axis which is perpendicular to the axis of the tubing. The friction wheel extends into the opening into engagement with the tubing, such that as the tubing is advanced through the housing, the wheel is turned. An encoder wheel is fixed to the friction wheel to allow a photodetector to determine the angular displacement of the wheel. An electric controller receives signals from the photodetector and calculates the linear length of tubing which has passed beneath the wheel and displays this on a liquid crystal display. A cutting assembly is mounted to the housing and spaced axially from the measuring assembly. The cutting assembly has a cutting blade which is rotatable about an axis substantially perpendicular to the friction wheel axis.

Abstract: A combination pipe cutter and gate valve for plastic pipe insertable into an in service pipe through which a fluid is flowing. The combination pipe cutter and gate valve comprises a valve body, means for securing a valve body around a portion of the plastic pipe into which the valve is to be inserted, a shear disposed within the valve body, means for lowering the shear toward the pipe and a cutting element secured to the leading edge of the shear, the cutting element forming a single cutting edge having a length such that the pipe is completely severed after the shear has passed completely through the pipe. As the shear passes through the pipe, the plastic material of the plastic pipe is deformed forming a seal against the faces of the shear.

Abstract: A blade for cutting cylindrical structures is disclosed. The working face of the blade is adapted for piercing and cutting. The blade of the invention works to cut cylindrical structures without substantially deforming the wall of the structure adjacent to the cut. The blade may be of use in a variety of devices for cutting cylindrical structures.

Abstract: A pipe cutter includes a slide slidably engaged in the housing of the pipe cutter, a shaft rotatably supported in the housing, a handle having an upper portion fixed to the shaft, a gear wheel engaged on the shaft and engaged with the slide, and a ratchet gearing engaged between the shaft and the gear wheel for driving the gear wheel to rotate in an active direction. The gear wheel can be prevented from rotating in a reverse direction by a pawl.

Abstract: A system for severing anchor cable mooring lines and oil well drill pipes is disclosed in which a primary hydraulic system containing a first fluid under pressure is utilized to actuate cutters and a secondary hydraulic system containing a second fluid under pressure is used to control valves which regulate the application of the first fluid to the cutters. The system is designed to operate independently of local power sources during an emergency.

Abstract: A cutting device includes a casing. A blade is disposed in the casing and moves between first and second blade positions. A moveable member having a blade guide engages the blade and moves between the first and second positions to control movement of the blade between its first and second blade positions. A compression spring is disposed in the casing for biasing the blade toward the first blade position.

Abstract: A pipe cutting apparatus includes a semi-cylindrical support shell arranged to include a plurality of positioning flanges extending downwardly relative to the support shell to receive a pipe member therebetween. The positioning flanges include a saw guide slot diametrically directed through the semi-cylindrical support shell and medially of the positioning flanges to effect alignment and severing of an associated pipe. The elongate slot is of a predetermined length substantially equal to and at least the predetermined diameter of the support shell. Modifications of the invention include engaging flanges mounted in cooperation with the support shell to enhance manual grasping and engagement of the associated pipe. Further, securement straps are available to afford encompassing securement of a pipe contained within the support shell. A lubricant spray apparatus is available for use of lubrication of an associated saw during a cutting procedure.

Abstract: Cutting apparatus is provided for cutting a hole or `window` in the wall of a pipe, for example prior to joining a branch pipe to a host pipe. The apparatus comprises a chassis frame 14 carrying a cutter unit 42 supporting a cutter tool 62. The chassis is attached to and movable around the pipe 12 by means of `roller` chains 24. The cutter unit is movable with respect to the chassis frame by means of the associated slider block 38 which is slidable along longitudinally extending chassis frame members 16. Thus, the cutter tool 62 can be moved relative to the workpiece in one sense by movement of the chassis frame 14 and in another sense by movement of the cutter tool relative to the chassis frame. A combination of such movements enable the hole or `window` to be cut.

Abstract: The invention is a cutter for plastic pipe which utilizes a guillotine cutting action in combination with a blade having a straight edge forming a converging angle to the cutting anvil of the cutter.

Abstract: A device for cutting flexible tubing includes a support member attached to a wall surface in fixed stationary position. The support member has a shelf projecting horizontally therefrom across which the tubing to be cut is laid. An adjustable end abutment member locates the end face of the tube as it lies across the shelf. A blade which has pointed end projects forwardly from the support member above the shelf and has a sharpened edge facing upwardly away from the shelf. In operation the user manually grasps the tubing on either side of the self and pushes the tubing rearwardly across the shelf toward the support member so that it engages the blade which punctures the tubing. With the tubing held in position against the shelf, an abutment surface on the support member and the end abutment member, the tubing is manually rotated to provide a cut lying exactly in a plane at right angles to the axis of the tubing.

Abstract: A pipe cutter includes a mouth formed in the front portion of a body for receiving a pipe to be cut, a handle pivotally coupled to the body and located in front of a grip, an upper cylinder and a lower cylinder coupled together, a container disposed in the body, and a cutter fixed to the piston rod of the upper cylinder. The container is connected between the cylinders. The hydraulic oil contained in the lower cylinder can be caused to flow into the upper cylinder when the handle is repeatedly pulled so that cutter can be caused to move forward in order to cut the pipe.

Abstract: A convenient and effective cutter for a cable, a plastic pipe or the like is provided. The cutter includes a base rotatably receiving therein a screw rod having a screw portion and a driving end, an immovable blade having a first curved portion having a first curved knife-edge, and a movable blade having a second curved portion having a second inner curved knife-edge and an outer toothed surface capable of engaging with the screw portion. When the driving end is rotated, the two knife-edges can be set in a relative motion to cut a work piece contained between the curved portions.

Abstract: A metal forming tool attachment includes a body assembly having a front part and a rear part. A rotary forming element journalled on the rear part is driven by an input shaft which projects from the rear part for coupling engagement with the output shaft of an associated power tool. Another rotary forming element journalled for free rotation on the front part cooperates with the driven rotary forming element to form a nip region therebetween. An adjustment lever mounted on the rear part cooperates with a threaded member mounted in fixed position on the front part to move the front part generally toward and away from the rear part whereby the nip region between the forming rolls may be adjusted. A pair of spaced apart rotary forming elements carried by a mounting plate pivotally supported on the front part may be substituted for the single rotary forming element carried by the front part to adapt the tool attachment to perform a radial bending operating.

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.

Abstract: A cutting device includes a body. A mouth is formed in the front end of the body for receiving a pipe to be cut. A cutter is received in the body and is movable toward the mouth. A gear and an upper end of a handle are pivotally coupled to the body. The gear is engaged with the cutter and is caused to rotate when the handle is pulled so that the cutter can be caused to move forward by the rotation of the gear in order to cut the pipe. The pipe can be cut neatly and efficiently when the handle is repeatedly pulled and released.

Abstract: A power saw for space or robotic operations with jaw members (12,14) for clamping to a work piece (16) by an operation of a lever arm (70). The saw assembly (18) is slidably mounted on the jaw assembly (18) and fed into the work piece by a hand operated feed screw (54). The saw assembly includes a motor and gear belt (26,28). A current sensing circuit provides a current signal which actuates colored lights (96,100,102) to visually depict the load on the saw blade during the cutting operations.

Abstract: A cutting device for a plastic pipe or the like includes a gun-like body having a forward fixed jaw member and a rear movable member carrying a cutting element preferably of a triangular shape and having two converging cutting edges. The movable member can be moved forward by operating a handle. In operation, the cutting element penetrates the object and then cut the object efficiently.

Abstract: A cutting machine includes a machine body for holding a synthetic resin pipe subjected to cut work, a plate-like cutter provided on the machine body for advancing and retracting movement with respect to the pipe within a plane perpendicularly intersecting the center line of the pipe, and a drive means for the cutter provided on the machine body, the cutter being provided at its edge opposite to the pipe with an angled cutting blade having a width in a direction perpendicular to the advancing and retracting direction of the cutter larger than the outside diameter of the pipe, the blade portion displaced toward one side of an imaginary straight line which passes through a center of the pipe in parallel with the advancing and retracting direction of the cutter, a first inclined portion continuous to the edge portion and crossing the imaginary straight line, and a second inclined portion continuous to the edge portion on the side opposite to the first inclined portion and coming into contact with the inner periph

Abstract: A pipe slitter comprises a base for fixing the slitter to a pipe to be slit thereby. The base includes a pair of end plates for mounting transversely of the pipe and a pair of connecting rods for coupling the end plates to each other. The connecting rods extend longitudinally of the pipe. A carriage supports a slitter blade. The carriage is movably supported on the base for movemenet longitudinally of the pipe. The slitter blade is movably supported on the carriage for movement transversely of the pipe.

Abstract: A pipe saddle for providing a reliable connection to a pipe. The present invention uses a barb seal which embeds within the surface of the pipe to lock the pipe saddle in place and prevent leakage. The barb seal is formed from the material of the pipe saddle so that no deterioration occurs. The barb seal has an oval shape to provide better sealing capabilities. T-bolt connectors allow the device to be individually tightened on each side of the pipe while allowing the body portions of the saddle to be pivotally opened yet maintained as a single unit to allow easy implementation.

Abstract: A punch tool is disclosed for creating an aperture in the wall of a heat exchanger tube. The punch tool comprises a cylindrical stem and bit means which is inserted into the tube from the tube sheet. The stem is retracted while the bit is forced upright by a rigid rod and punctures the tube.

Abstract: The anastomosis trimming device is used for trimming one end section of a tubular structure, such as a blood vessel or vascular graft, which is to be anastomosed, to provide the anastomotic end with a smooth, reproducible shape. The end is trimmed in such a manner as to mate with a similarly trimmed end of a second tubular structure or with an incision in the side of a second tubular structure. The device comprises first and second arms pivotably connected to each other at one end, with the first arm mounting a cutting die including a cutting element on a free end thereof. The cutting element faces toward the second arm, and the free end of the second arm mounts a mating element facing toward the first arm which, upon pivoting of the free ends of the first and second arm, mates with the cutting element on the first arm.

Abstract: For separating tubular foundation piles under water, a working device with a downwardly extending supporting shaft and at least one separating tool is placed on an upper edge of the pile so that the separating tool is inserted into the supporting shaft, and then the working device is clamped on the pile and the separating tool is rotated about a longitudinal axis of the supporting shaft to penetrate through the wall of the pile.

Abstract: A manual appliance for cutting pipes made of plastic, such as polyethylene, comprising a cutting blade mounted on a blade-holder moving under the action of a control screw between the two parallel branches of a guide saddle closed by means of a completely opening lower saddle.

Abstract: A pipe cutter comprises a rotary cutting device having a cutter, two semi-cylindrical shells connected by a hinge, and a thrust bar connected between the handles for controlling the gripping force of the shells. The shells have jaw inserts with slots and ridges on their outer periphery to alter their resilient behavior during use.

Abstract: The apparatus for cutting off a substantially cylindrical piece from a cylindrical object comprises a handle with a gap like cavity in which a knife blade carried by a blade holder is pivotable. The blade holder is substantially U-shape. In the side arms of the U-shape blade holder recesses are provided which form supporting surfaces for the end regions of the knife blade. Advantageously a U-shape cover is provided with projecting pins which holds the knife blade in place in the blade holder. A transverse pivot passage in the blade holder outside of the blade contour with a radial slot extending therefrom can provide a catch opening for a pivot bolt anchored in the handle.

Abstract: A tool for cutting a workpiece comprising a tool body; means on the tool body for securing the workpiece; a saw blade movably supported on the body for cutting the secured workpiece, the saw blade having a plurality of cutting teeth movable in a sawing direction and a feeding direction in a cutting plane extending through the workpiece; and a bushing on the tool body rotatable about an axis normal to the cutting plane, the bushing being engagable on its periphery by the saw blade teeth and rotatable thereby, after cutting of the workpiece, to restrict movement of the saw blade in the feeding direction while permitting movement of the saw blade in the sawing direction. In the preferred embodiment the bushing includes teeth on the periphery which are of comparable size and spacing to the teeth of the saw blade to clean the latter. The bushing may be made of a bronze porous powder metal which is impregnated with a lubricant for lubricating the saw blade teeth.

Abstract: Disclosed is a method and apparatus for cutting piling and conductors extending into the sea floor from an offshore platform. A window is cut into the piling to permit access to the stabbing point which is then removed. The piling is washed out to remove sand and mud at least to the depth where the cut is to be made. A cutter/pinning device is lowered to the disired elevation of cut. Once the cutter/pinning device is properly positioned, engaging pistons are driven radially outward from the cutter/pinning device to engage the walls of the piling, preferably both above and below the line of cut. A series of radially disposed torches or explosives within the cutter/pinning device are then ignited to burn or blow a circumferential cut in the piling at the desired elevation of cut which will typically be twenty feet below the mud line.

Abstract: A pliers-type cutting hand tool utilizes a pair of elongated members pivotally connected adjacent their upper ends, the lower portions of said members form a pair of elongated handles. One of the members on its upper end is provided with a clamp, where an object may be secured, the other member carries a changeable saw blade, due to oscillating movement of which the cutting process is performed. The pivot connection of said members is capable of step-by-step movement towards the clamp, the constant engagement of the saw blade with the object being cut is thus provided.

Abstract: A cutting tool designed to provide a straight line cut through plastic or like material conduit and incorporating pivoted handles respectively including a cutting blade and a positioning anvil formed at the distal ends thereof and in cooperative relation to one another so that the conduit product positioned in the anvil will be maintained in a cutting position to achieve an accurate straight line cut. A return spring, a stop element and a closed end configuration are provided on the remainder of the handles, substantially adjacent to the proximal ends thereof to prevent nesting engagement of the handles during the cutting operation and maintain predetermined spaced relation between the ends of the handle so as to insure their separation and return to a cutting position once gripping pressure is released.

Abstract: A device and method for severing the piles, grout and structural sleeves of vertical marine structures, from the inside of the structural member or the outside of the structural member. The device will sever the pile, grout or sleeve without jamming even though the weight of the marine structure is bearing down on the pile, grout or sleeve. The device is first lowered into the pile at the desired elevation and further locked onto the wall of the pile. Once the device is locked onto the pile, the cutter is lowered and proceeds to cut into the pile, grout and sleeve. When a sufficient section of the pile, grout or sleeve has been cut, spacers with barbs are forced into the slot formed by the cutter blade and are held in place by the barbs. After the spacers are in place, the remainder of the pile is severed with the cutter blade and a continuity check is made of the pile.

Abstract: Apparatus for severing primary tubes of steam generator of a nuclear reactor. The tubes are under water because they are radioactive and also because it is undesirable to expose the tubes to oxidation. The tubes are in a confined region of the steam generator affording limited access for cutting. The apparatus includes a file whose cutting surface is cylindrical. The file is located wholly in the region where the tube is clamped within the cooperative clamps which secure the tube for cutting. The file is rotated in cutting engagement with the tube by an air motor. The file is mounted on a slider which is pulled by a cable causing the file to cut through the tube.

Abstract: A cutting device for plastic pipe for use principally in the aid of plumbing, swimming pool and spa installations. The pipe cutter is designed specifically to be used or attached to a hand held drill motor of the type which tradesmen commonly carry and use for drilling holes and setting screws. The pipe cutter includes a body which is attachable to the front of a drill motor and houses a dual directional linear actuator such as an epicyclic ball screw with bi-directional brake. The epicyclic ball screw linear actuator responds to the chuck or rotating shaft of the drill motor. The housing defines or holds a U shaped recess or cradle for receiving a plastic pipe extending transverse to the length of the housing or more particularly on center or to the axis of the drill motor shaft. A guillotine type of cutter blade is driven by the screw actuator to move through a slot into the cradle to be driven through the side wall of the pipe and therefore sever the pipe within the cradle.

Abstract: A punch tool is disclosed for puncturing the walls of heat exchanger tubes when they become worn in order that the tubes may be repaired. Said tool comprises a hardened, longitudinally drilled, steel rod that is able to fit within the heat exchanger tube. A piston with a cutting bit is fit within a milled slot that communicates with the longitudinally drilled hole of the hardened rod. Once the tool is inserted into a tube to be repaired hydraulic pressure is applied and the piston is forced outward thereby puncturing the tube.

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.