Abstract: A tube cutter includes a main body, a holder slidably mounted on the main body, a guide bolt rotatably mounted on the main body and locked onto a lower portion of the holder to drive and move the holder forward or backward by rotation of the guide bolt, and a driving handle removably mounted on the guide bolt to drive and rotate the guide bolt, and to enhance the torque of the tube cutter.

Abstract: An electronic pipe cutting system and methods of use are described herein. A drive cutting assembly contains one or more cutting wheels that rotate around a pipe. A drill is used to connect to a main shaft and one or more gears transfer and transform the energy of the drill into optimal motion of the cutting wheels. The present invention provides a low cost, compact and lightweight pipe cutting system in comparison to other electronic pipe cutting system.

Abstract: A wire saw for cutting pipe is provided including a saddle forming a saddle surface for abutting against a cylindrical pipe, an elongate guide fixed to the saddle, a bow having a first and second end, a bridge portion joining the first and second ends, and an open end having a length L from the first end to the second end which is greater than a diameter D of the pipe, a wire loop movable along a track formed within the bow, and a cooling system for actively cooling the wire loop. The elongate guide has an axis approximately perpendicular to an axis of the pipe when the pipe is abutting against the saddle. An exposed portion of the wire loop extends across the open end. The how is moveable on the elongate guide toward and away from the pipe when the pipe is abutting against the saddle.

Abstract: A downhole tool having a cylindrical body, a sleeve having a contact portion disposed on a distal end, and a cutter having a radiused portion on a top surface operatively engageable with the contact portion. Also, a method of cutting drill pipe, the method including disposing a cutting tool in a wellbore around the drill pip and actuating a radiused cutter of the cutting tool, wherein the actuating includes radially extending the cutter into contact with the drill pipe. The method also includes applying a substantially constant force between the cutter and the drill pipe and rotating the cutting tool. Additionally, a cutter for a drill pipe cutting tool, the cutter including a work surface located at a first end of the cutter, an attachment point located at a second end of the cutter, and a radiused surface located between the work surface and the attachment point.

Abstract: A tube cutting device includes a tube holding member that holds a target tube from an inside of the target tube, allowing the target tube to be cut from an outside; and a cutter carrier member that includes a cutter eccentrically pivotable relative to the geometry axis of an elongate body of the cutter carrier member, such that when in a non-extended position, the cutter is positioned within a diameter of the elongate body, and when in an extended position, the cutter extends outwardly and cuts into a wall of the target tube.

Abstract: A tool for shortening an implant rod has a base housing part and a movable housing part shiftable toward and away from each other in a predetermined direction. At least one guide roller is provided on the movable housing part, and a cutter is provided on the base housing part. The rod is fittable between the cutter and the guide roller in a spread position of the housing parts. A biasing unit urges the parts together and thereby presses the cutter into the rod with a predetermined force. Thus the cutter is pressed against the workpiece with a force that does not change and that is not under the control of the user, ensuring that the force applied lies within an acceptable safe range.

Abstract: A cutting mechanism for cutting a pipe includes a fixing board, a cutter mounted on the fixing board and a driving assembly. The cutter includes a base body, and a blade positioned on the base body. The driving assembly is mounted on the fixing board for driving the pipe move to the blade to be cut into pieces of certain lengths.

Abstract: A pipe cutter for cutting a pipe includes a cutting head assembly having a first carriage and a second carriage spaced apart to define a cutting area. The first carriage supports a cutting mechanism, and the second carriage is configured to support a pipe within the cutting area. The carriages have a locked state and an unlocked state such that when the carriages are in the unlocked state, the carriages are movable relative to each other and biased into the cutting area. The pipe cutter also includes a drive assembly configured to rotate the cutting head assembly and a locking mechanism configured for changing the carriages from the unlocked state to the locked state and for holding the carriages in the locked state. The locking mechanism includes an actuation member rotatably coupled to the first carriage.

Abstract: A seal trimmer comprising a support member having a first end a second end, and a guide portion variably disposed within the support member is provided. An apparatus comprising an inner sleeve portion, an outer sleeve portion, and at least one finger moveably disposed between the inner sleeve portion and the outer sleeve portion, the at least one finger configured to determine a length of a port seal is also provided. Furthermore, a method of sizing and cutting a port seal to fit onto a port, comprising the steps of providing a support member having an inner sleeve portion and an outer sleeve portion defining a cavity therebetween, and a length guide portion variably disposed within the cavity of the support member, inserting the port seal into the cavity, and cutting an exposed portion of the port seal is also provided.

Abstract: A cutting assembly for external conduits on a tubing string features a breakaway in the string that can be severed with a tensile force. Preferably each external conduit is run through a cutter housing. Upon severing of the string and applying a pickup force, a tension is applied to each external conduit since the severing of the string happens above all the cutter housings. Each housing cuts at least one conduit and the upper portion of the string brings with it the upper portion of the external conduit while the lower portions of each cut external conduit are retained in the cutter housings that remain downhole below the breakaway. In that manner there are no loose external conduit ends to interfere with and/or disturb subsequent fishing or other wellbore operations.

Abstract: A cutting tool for a pipe of specific diameter comprises a generally cylindrical body 1 defining a central bore 10 extending along an axis. The body is divided into two axially spaced half portions 2A and 2B which together clamp a cutting blade 8 projecting into the bore 10. The body has a progressively narrowing slot 12 extending from its outer circumference to the bore. At the bore 10 the width of the slot 12 is narrower than the diameter of the bore. One side of the slot 12 is flexibly resilient to flex away when a pipe of diameter equal to the bore is pushed along the slot into the bore and to resile when the pipe has entered the bore, urging the pipe against the blade so that subsequent relative rotation between the tool and pipe will cause the pipe to be severed.

Abstract: A cutting tool for a pipe of specific diameter comprises a generally cylindrical body (1) defining a central bore (10) extending along a predetermined axis. The body is divided into two axially spaced half portions (2A and 2B) which clamp between them a cutting blade (8) that projects into the bore (10). The body has a progressively narrowing slot (12) extending from its outer circumference to the bore. At the bore (10) the width of the slot (12) is narrower than the diameter of the bore. The tool to one side of the slot (12) is flexibly resilient so as to flex away when a pipe of diameter equal to the bore is pushed along the slot into the bore and to resile when the pipe has entered the bore and so urge the pipe against the blade so that subsequent relative rotation between the tool and pipe will cause the pipe to be severed.

Abstract: Systems and methods for cutting, or trimming, a catheter at a specified location along the length of the catheter. The catheter preferably includes a stop feature comprising a difference in a physical characteristic between a first portion of the catheter and a second portion of the catheter which interacts with an elongate member of the cutting system to determine the catheter is in a proper position to be cut.

Abstract: The invention as presently conceived discloses a plumbing pipe cutter with an integral means of directing away residual water after a pipe is cut. The device comprises a conventional, low profile pipe cutter that is commonly used to cut copper water supply lines. Other cutters designed for polyvinylchloride (PVC) or other types of piping can likewise be adapted. The apparatus is further comprised of a transparent shield around the entire perimeter of the cutter and extending onto either pipe. At one end of the shield, approximately 8-10 inches from the cutter, the transparent material is flexibly gathered and routed to a short section of PVC tubing. The distal end of the tubing has a hose connector onto which a standard hose would be attached. When the apparatus is fully installed, residual water in cut pipes is collected and directed away without harming the surrounding areas.

Abstract: A device for producing bypasses under pressure in fluid piping systems, including a horizontal T-shaped body having a radial conduit which can be connected to a connecting collar or seat of the pipe to be bypassed and a radial conduit with a mouth for extracting fluid from the bypass. The device includes an inverted cup-shaped cutter with an overdimensioned tooth crown and, on the rear part thereof, a stepped extension with two threaded areas. One of the threaded areas is attached to the upper neck of the radial conduit and is closed with a cover and gaskets. The device further includes an actuation means which can be positioned on the neck and which is equipped with a feed screw and a shaft which can be connected to the end threaded area of the cutter by means of a male connector and a nut.

Abstract: A tool assembly which is adapted to perform a cutting operation and also a beveling operation on a pipe. There is a rotary power saw which has rotary drive member to which a saw blade can be mounted. There is a bevel section having a mounting member that connects to the rotary drive member, and a bevel member. There is a locating surface portion around the axis of rotation of the bevel member, and an end lateral locating section and an apex end of the bevel member. The bevel section can be removably connected to the drive member of the power saw.

Abstract: A plastic pipe cutting device for both cutting and filing a plastic pipe has a semi-circular top sleeve and bottom sleeve. A top guide track is connected to the top sleeve and a bottom guide track is connected to the bottom sleeve. The top guide track and the bottom guide track are continuous upon closing the device. A guide roller is rotatably connected to the roller housing and is capable of rolling upon the top and bottom guide track. A blade is connected to the roller housing for cutting a plastic pipe. A rasp is connected to the roller housing for filing the end of a plastic pipe.

Abstract: A tool for beveling the end of a pipe is comprised of a hollow, tubular body having a central, longitudinal axis of rotation, an inboard coupling end, and an opposite outboard working end. A plurality of longitudinally spaced, transversely directed latching pin bores of equal size are defined through the wall of the tubular body. A core member is disposed coaxially within the tubular body. The core member includes a beveling cutter head and a longitudinal stem having a radially inwardly directed, circumferential latch position groove. A transversely oriented latching pin is engaged in a selected one of the latching pin bores in the body and with the latch position groove of the core stem. This allows alternative selection of each of the latch position bores for insertion of the latching pin. The particular bore selected determines the longitudinal position of the core stem latch position groove within the body that will be aligned with the latching pin.

Abstract: A pipe-cutting device comprising a portable support; a device for rotating said pipe relative the support; a cutter associated with said support for cutting the pipe during rotation of the pipe.

Abstract: The converter for converting a mechanical joint to a socket fusion joint includes a body having an inner surface, a stop disposed on the inner surface, and a fusion surface extending from the stop for a distance d1. The converter also includes a marker disposed on the outer surface for providing a reference location as to where the body can be severed to keep d1?FM, wherein FM is the minimum fusion surface length allowable for the fusion socket joint. A method for repairing a leaking mechanical joint is provided which includes severing the mechanical coupling from the converter and the pipe. The method also includes performing a facing operation on the converter end surface to form a faced end such that the fusion surface extends between the faced end and a stop for an axial distance d1?FM.

Abstract: A tool assembly having a pair of pivotally interconnected handles and a cooperating, interchangeable iris frame. The iris frame can be exchanged with an alternative iris frame for cutting wires, pipes, stripping wires, engaging faceted elements such as nuts and bolts, cutting threads, as well as swaging. The iris frame retains a plurality of blades operably moveable between a retracted position and an extended position by actuation of the handles. One of the handles and the iris frame can include gearing for effectively adjusting a force exerted by the blades.

Abstract: A cutting head for a portable, hand-held, power-operated pipe cutter is constructed with at least one channel in a rotating mounting plate assembly, to permit lateral insertion of a pipe. The power-transmission arrangement employed includes at least one component that effectively spans the entrance to the channel in the mounting plate so as to ensure that driving engagement therebetween is constantly maintained.

Abstract: An existing straight pipe 1 is cut off at two locations by rotating two seal-up housings 2 each mounted with a cutter 3, to form two cutoff groove 12C. A straight pipe portion 1p between the two cutoff grooves 12C remains left without retrieval, to impart a flexibility and contraction and expansion properties to a pipeline.

Abstract: The invention relates to an apparatus for machining, especially cutting tubular or round section bodies (1), said apparatus comprising a gripping mechanism (2), which is adapted to be braced on said machinable body (1) rotatably around the same and which gripping mechanism (2) is provided with a machining unit (3) fitted with adjusting means (4) for moving said machining unit (3) relative to the gripping mechanism (2) towards or away from the machinable body (1), and which gripping mechanism (2) includes a frame section (5) and first and second arms (6, 7) extending therefrom, the gripping mechanism (2) being adapted to brace against the machinable body (1) by means of bracing elements (14, 15, 16) mounted on the frame section (5) and the arms (6, 7). The arms (6, 7) are at one end articulated to the frame section (5) of the gripping mechanism (2) and the bracing elements (15, 16) included in the arms (6, 7) are mounted on the free ends of the arms.

Abstract: A tool for cutting a plastic pipe includes an annular collar having a fixed inner diameter which adapted to be slidably positioned on and encircling the plastic pipe. The tool further includes a cutting member pivotably attached to the annular collar an alignment ring having a fixed inner diameter which is adapted to be slidably positioned on and encircling the plastic pipe abutting the annular collar. The tool includes means for maintaining the alignment ring in temporary engagement encircling the pipe, with the annular collar abutted next to the alignment ring.

Abstract: The invention relates to an existing pipe cut-off method and slitting method, by which an existing pipe made of cast iron and steel can be cut off. With a cut-off method according to the invention, first, a part of an existing pipe 1 is enclosed and sealed up by a seal-up housing 2 in an airtight state, a cutting tool 30 having a plurality of blades 30c is accommodated in the corresponding seal-up housing in a state the cutting tool is attached to the abovementioned seal-up housing 2. Next, the cutting tool 30 is fed toward the center of the abovementioned existing pipe 1 while slitting the existing pipe 1 by rotating the cutting tool 30 by power of a prime mover, and the abovementioned existing pipe 1 is cut off by the cutting tool 30 by turning the abovementioned seal-up housing 2 in the circumferential direction R of the existing pipe 1.

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 method and apparatus for stopping or otherwise altering fluid flow in a pipeline at a desired location, originally without provisions to do so, and particularly suited for use with heavy wall pipes. The method and apparatus includes use of chip forming cutting tools that are carried in a circumferential orbit around the pipe within a housing assembled around the pipe. The cutting tools are progressively advanced into the wall of the pipe to cut two axially spaced circumferential grooves in the pipe wall. Thereafter, a shear plate with cutting edges coinciding with the grooves can be forced through the pipe to sever a coupon from it and thereby gain access and control over flow through it.

Abstract: In an attachment to a multifunctional tool, comprising a construction that frames are projected on a cylinder head, a yoke having a fixed die and a latch are pivotally supported by the frames, and a movable die is fitted to the piston head opposite to the fixed die, or frames are projected on a cylinder head of the body of the tool, two props are pivotally supported by the frames, and working parts of the tool are pivotally attached to the two props, sliding grooves are formed on inside surfaces of the yoke and latch and, the attachment possesses a mechanism for attaching or detaching auxiliary dies to inside surfaces of the fixed die and movable die, or the attachment is attached to inside surfaces of the both props pivotally supported by the frames at the position of the piston head; sliding grooves are formed on the inside surfaces of the props to make a movable die slide by being linked to the slide of the piston head; and the attachment possesses a link mechanism which is in contact with a contact surfac

Abstract: A saw for simultaneously cutting and beveling including a cut-off saw, a cutting blade, and a beveling blade. The cutting blade cuts simultaneously while the beveling blade bevels. The beveling blade preferably has a head with two faces annularly connected by an annular slanted circumference. The head has at least one notch suitable for accommodating a respective at least one tooth insert interconnected with a respective at least one cartridge. Each cartridge is interconnectable with a respective tooth insert.

Abstract: A pipe cutter includes a body having two side walls and each of the side walls has an arcuate slot. A rod pivotally extends through the first end of the body and a first contacting member is rotatably connected to the second end of the body. A first link has a first end thereof pivotably connected to the body and a second end thereof having a disk blade rotatably connected thereto. The rod is pivotally connected to the first link to which a second link is pivotally connected, the other end of the second link has a second contacting member rotatably connected thereto. The second contacting member has two protrusions extending centrally and longitudinally therefrom so as to move within the two arcuate slots.

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 tool for cutting an elongated pipe is disclosed which includes an annular collar selectively positionable on the pipe for slidable movement along the length of the pipe to a predetermined position and separate selectable rotational movement about said predetermined position. A cutting member is pivotably mounted to the annular collar, so that as the annular collar and cutting member are rotated about the predetermined position, a circular score is formed on the pipe. Further rotation of the cutting tool results in cutting of the pipe through the score. In a preferred embodiment of the present invention, the annular collar includes a radial expansion slot for expansion of the collar and frictional engagement of the pipe to be cut, the cutting member includes a blade mounted between opposing first and second blade holding members and a biasing spring attached to the first blade holding member with a fastener.

Abstract: An apparatus for piercing a hole in a tube centered on a tube axis has a plurality of housing parts one which is formed with a throughgoing threaded passage centered on a passage axis and both of which are secured the housing parts around the tube with the passage axis extending generally radially of the tube axis. A tool body threadable into the passage is formed with a blind bore generally centered on the passage axis, open radially inward of the tube axis toward the tube, and having an end wall directed radially inward of the tube axis toward the tube. A straight hard metal needle in the bore has a pointed inner end directed radially inward of the tube axis at the tube and an opposite outer end confronting the end wall of the bore. The outer needle end is centered by appropriate formations in the bore on the passage axis and the outer needle end is braced radially outward of the tube axis against the bore end wall.

Abstract: Device for cutting a pipe (1) transporting fluid in order to stop the circulation of the fluid at any point, comprising a casing (2, 3) susceptible of being sealingly mounted on the pipe (1). The casing (2, 3) contains at least one blade (8) which is driven in rotation and feed motions so as to cut off the pipe (1) by sawing it transversely. The blade (8) forms a stop surface to the circulation along the section plane of the saw blade. The device is useful in the cutting of fluid flow in pipes and particularly in the case of accidents such as fires in oil wells.

Abstract: A tool for cutting tubing, light pipe, and other similar cylindrical materials includes a circular cutting wheel or blade and opposite guide rollers in a spring loaded hand clamp frame. The frame spring urges the two opposed handles apart, thereby urging the two opposed jaws together, and thereby precluding any need for additional adjustment of cutting pressure during the cutting operation. The tool may be applied with only one hand to the material to be cut, and easily rotated about the material with only one hand, as no further adjustment of blade depth or cutting pressure is required. The relationship between the cutting blade and guide rollers is constant, with the center of the cutting blade always positioned linearly along the perpendicular bisector of the line between the two guide rollers, even though the opposed jaws move arcuately relative to one another. The guide rollers are affixed within one jaw, with the cutting blade portion slidably positioned relative to the guide rollers.

Abstract: A device blocks the flow of fluid in a pipe so that work can be done on the pipe downstream of the device. The device includes an installation unit and a blocking unit. The installation unit is sealed against the ambient when mounted on the pipe to permit drilling a hole into the pipe and the blocking unit includes an expandable body which is passed through the installation unit and on through the hole in order to temporarily block the flow of fluid in the pipe. The expandable body has a larger diameter than the internal diameter of a channel in the installation unit. The blocking unit includes a rod mounted in the holder to which a manual force is applied for distending the expandable body before insertion so that the expandable body has a diameter less than the diameters of both the channel and the hole thereby facilitating passage of the expandable body through the channel and hole into the pipe.

Abstract: Tap line pliers for removing refrigerant from a line of a refrigeration system comprising a set of pliers having jaws at one end and opposed handles at the other end; a platform mechanism coupled within the jaws of the pliers, the platform mechanism adapted for holding a line placed thereon for tapping; a tapping mechanism coupled within the jaws of the pliers, the tapping mechanism adapted for tapping a line held on the platform mechanism; and a valve mechanism coupled to the tapping mechanism, the valve mechanism being adapted for draining a tapped line.

Abstract: A tube cutter mechanism supports an arm from which a tube supporting anvil extends, the anvil being aligned with the tube cutter mechanism for cutting the supoorted tube. During cutting, an axial force is imposed on the tube and anvil. The arm is formed such that it bends in response to the force, storing energy such that rotation of the tube occurs for more than one revolution of the tube without advancing the cutter wheel. The device is formed of molded glass fiber reinforce nylon, preferably ZYTEL. In a second embodiment, the arm does not bend and the anvil is constructed so as to bend relative to the arm in response to the axial cutting force permitting rotation of the tube during cutting beyond a single revolution without advancing the cutter wheel. The anvil advantageously does not have a cutter wheel for burnishing the tube to remove oxides during cutting.

Abstract: A hand tool or grooving or cutting pipes has an aperture for receiving a portion of pipe, and adjustable support means. A cutting or grooving wheel is displaceable along a predetermined path to cause it to move radially relative to the pipe, as the tool is manually rotated round the pipe.

Abstract: A tubing cutter comprising a pair of arms pivotally connected together adjacent one end, with the opposite ends of the arms free. Such opposite end of one of the arms has thereon a rotatably mounted cutting wheel, and upon the opposite end of the other of the arms at least one roller is utilized, in opposed operative relationship to the cutting wheel. A tightening arrangement, preferably in the form of a finger operated wheel mounted on a dually threaded shaft, is utilized for enabling the user to draw the free ends of the arms together, so as to force the cutting wheel into cutting contact with a piece of tubing placed between the rotary cutter and the rollers. Thus, upon relative rotation occurring between the cutting wheel and the tubing, the severing of the tubing can be readily brought about. Preferably a spring bias arrangement is utilized, which serves to assist the tube severing procedure by biasing the cutting wheel into firm contact with the tubing to be cut.

Abstract: An apparatus and method is disclosed for an improved hose trimming apparatus for trimming a hose, the hose having an internal bore encompassed by a sidewall. The apparatus comprises a support member and securing means disposed on the support member for securing the support member to the hose. A motor assembly comprising a revolving cutting head is mounted on an axis of a motor for rotating the revolving cutting head about the axis. The motor assembly is rotatably mounted relative to the support member. A handle rotates the motor assembly about the support member enabling the revolving cutting head to sever the sidewall of the hose as the revolving cutting head is rotated about the support member.

Abstract: A pipe cutter is disclosed in which a housing carries a disk which is rotated selectively in a forward direction or in a reverse direction by a power drive. The disk has a pipe receiving slot extending to the central axis of rotation of the disk for receiving a pipe to be cut. A cutter blade and rotatable roller are disposed on the disk in symmetrical locations about the central axis of rotation, the cutter blade being adapted to move linearly into and out of contact with the pipe which is inserted into the receiving slot. The roller, which preferably is a pair of spaced rollers, is engageable with the outer peripheral surface of the pipe at a location generally opposite to the location of the cutter. A holder for supporting the cutter blade is mounted on the disk for rotation therewith about the central axis of rotation and is also mounted for linear motion toward and away from the central axis of rotation.

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: The device comprises a lower frame (1) with lower supporting rolls (2) to support a cylindrical body (3) to be placed thereon, rotating elements (6-11) to rotate the cylindrical body, and a cutting/machining means (4) for cutting and/or machining the cylindrical body.

Abstract: An apparatus and method is disclosed for an improved hose trimming apparatus for trimming a hose, the hose having an internal bore encompassed by a sidewall. The apparatus comprises a support member and securing means disposed on the support member for securing the support member to the hose. A cutting element is rotatably mounted relative to the support member. A handle rotates the cutting element relative to the support member enabling the cutting element to sever the sidewall of the hose as the cutting element is rotated relative to the support member.

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 method and device for the opening of breakable ampules, especially glass test tubes, includes a scoring tool for scratching the end which can be removed by a break-off device. A clean scratching of the ampule end can be executed, producing a smooth fracture by applying an ever constant force exerted on the ampule ends, in order to avoid lengthwise scratches in the body of the ampule from internal stresses. For this, an ampule receiver is provided, into which the ampule can be introduced as far as a stop. It is then rotated while lodged herein with the end of the ampule against the scoring tool. The scratched end of the ampule can be broken off when the ampule is advanced beyond a breaking step.

Abstract: An automatic feed system for a tube cutter is disclosed which automatically feeds a cutting tool into a tube and also automatically resets the cutting tool to its initial position once the tube has been cut. The automatic feed system has a cam element rotatably mounted in a cutting head defining a cam surface eccentric with respect to the axis of rotation of the cam element. A cam follower is formed on a cutting arm which is pivotally attached to the cutting head and has a cutting wheel attached thereto. The eccentric cam surface includes a substantially flat surface portion which lies in a plane extending substantially parallel to the axis of rotation of the cam element which, when contacted by the cam follower, allows the pivot arm to assume an initial, retracted position. As the cam element rotates, the eccentric cam surface and the cam follower urge the cutting wheel into the tube wall.

Abstract: A pipe cutter includes a body having two side walls and each of the side walls has an arcuate slot. A rod pivotally extends through the first end of the body and a first contacting member is rotatably connected to the second end of the body. A first link has a first end thereof pivotably connected to the body and a second end thereof having a disk blade rotatably connected thereto. The rod is pivotally connected to the first link to which a second link is pivotally connected, the other end of the second link has a second contacting member rotatably connected thereto. The second contacting member has two protrusions extending centrally and longitudinally therefrom so as to move within the two arcuate slots.