Abstract: A drill, drill bit and staples for use in attaching staples to a support by driving two parallel screws in the same direction simultaneously, one held by each side of the staple, so as to secure wiring to the support using the staple. The drill bit includes a central gear and two planetary gears, which gears rotate a screw-driving tool. The drill bit is held by the chuck of a drill and, when its central gear is rotated, rotates the planetary gears that drive the two screws. A harness may used to attach the housing of the drill bit to the drill to prevent rotation of the housing when the central and planetary gears are rotating. The drill may be rotatable from horizontal to vertical, telescoping and permit the bit to be rotated 90 degrees.

Abstract: A tool holder assembly includes a holder body, a pull stud and a flow adjustment unit. The holder body has a holder coolant channel extending through a first end and a second end thereof. The pull stud has an insertion portion, a grip portion, and a longitudinal passage extending through the insertion portion and the grip portion, and fluidly communicating with the holder coolant channel. The flow adjustment unit includes a connection tube that extends into the longitudinal passage and projects outwardly from the grip portion, a resilient member urging the connection tube to project outwardly from the grip portion, and a flow guide channel extending through the connection tube and fluidly communicating with the holder coolant channel.

Abstract: A magnetically mountable portable drill assembly includes a magnetic base adapted to be mountable to a working surface, a housing coupled to the magnetic base, a motor coupled to the housing, an arbor coupled to the motor for rotation by the motor, a cutter coupled to the arbor for rotation with the arbor and adapted to cut the working surface or a workpiece supported on the working surface, the magnetic base having a front surface facing the cutter, and an illuminator coupled to the magnetic base to emit light from the front surface of the magnetic base for illuminating an end of the cutter and either one of the working surface and the workpiece.

Abstract: An apparatus for tapping trees has a vertical support structure of posts that support upper and lower horizontal members extending from the vertical structure. The upper horizontal member provides a support for bearing against a tree trunk, and the lower horizontal member supports a combination of a drill block with a drill and a tap press. Forward and rearward movement of the drill block is operated by a motor, shafts and gears to drive a suspension member toward the tree trunk along travel rods and then reverse. A drive chain engaged with the gears is attached to the suspension member and incorporated in the front and rear blocks that support the travel rods and sprockets for the chain. The tap press is attached to the drill block and rotates from vertical to horizontal position and holds a tap cylinder for insertion into a tree trunk.

Abstract: An auto-feeding permanent magnet drill comprising a first permanent magnet capable of being removeably coupled to a magnetic material. A coupler plate couples to the first permanent magnet. A drill frame couples to the coupler plate, the coupler plate providing an interface to couple the first permanent magnet to the frame. User interfaces are provided to enable control for powering the drill, enabling a drill or cutter bit auto-feed feature, enabling a lubrication system and enabling a mechanical adjustment system. An electric drill is coupled to the frame, the electric drill coupled to the auto-feed feature and electronically coupled to the user interfaces. A lubrication reservoir couples to a second permanent magnet capable of coupling the lubrication reservoir to a magnetic material or work surface.

Abstract: A method punches a damper out from a damper material that is detachably attached on a flexible exfoliative member through an attaching surface of the damper material with use of a hollow punch. The method includes steps of setting the damper material on a supporting surface, positioning a projection part between the exfoliative member and the supporting surface, and punching the damper out from the damper material by cutting the damper material around the projection part by the hollow punch without punching the exfoliative member.

Abstract: A drilling apparatus capable of having a minimal axial length to permit its use within limited confines. The drilling apparatus includes a housing with a housing bore and a first housing end, a spindle rotatably supported within the housing bore, bearing elements within the housing bore and surrounding the spindle to rotatably support the spindle within the housing, and a drive unit for rotating the spindle. The spindle is configured to secure a shank of a drill bit at a first end thereof exposed at the first housing end, and the drive unit is transversely offset from an axis of rotation of the spindle.

Abstract: A stationary power drill has a drill unit disposed in a tool housing is connected to a base vertically adjustably via a guide column and is vertically adjustable along the guide column by means of a drive unit. The drive unit includes a rotating drive shaft, and a compensation spring element engaging the drive shaft and braced on the other end on the tool housing.

Abstract: In the pocket hole apparatus of the present invention, a table reciprocates linearly relative to a base. An anvil is fixed relative to the base and holds the workpiece on a sloped top surface at the desired angle for the pocket hole. A drill spindle with a drill bit is fixed relative to the table. After the workpiece is mounted to the anvil, the table is moved to drill the pocket hole. Optionally, a second spindle on the opposite side of the anvil predrills the pocket hole when the table is first moved to a predrill position. The spindle is enabled or disabled by latching mechanism. The spindle is mounted to a rail that is slidably mounted to the table so that the rail can slide perpendicularly thereby adjusting the spacing between pocket holes.

Abstract: A rotary cutting machine 10 has a machine body 14 and an arbor 18. The arbor 18 includes a proximal rotary shaft 22 mounted to the machine body 14 for rotation, an intermediate rotary shaft 24 telescopically connected to the proximal rotary shaft via a splined connection, and a distal rotary shaft 26 telescopically connected to the intermediate rotary shaft 24 via a splined connection. A cutting tool C secured to the arbor 18 is extended and retracted via a feed mechanism 20 including first, second, and third racks 30, 31, and 32, and first and second pinions 33, 34.

Abstract: A deep-hole boring machine (100) includes a base (11) to be fitted to an upper face of a floor, a pillar (14), a fixing mechanism (40), a guide member (15), a rotary tool (17), a tool rotation driving section (16), a rising/descending mechanism (50), a guide base (60) and a tool guide mechanism (30). The deep-hole boring machine 100 can be used to bore a vertical hole or an inclined hole in a concrete in a construction site.

Abstract: A sheet hole-punching device includes a punch member having a leading end with a hole-punching blade, a base frame for movably supporting the punch member in a hole-punching direction, a drive motor for driving the punch member, and a transmission device for transmitting rotational force of the drive motor to the punch member so as to rotate the punch member. The transmission device is disposed between the drive motor and the punch member. A cam device is disposed between the base frame and punch member, and converts a rotational movement of the punch member into a hole-punching direction movement so as to move the punch member in the hole-punching direction while rotating the punch member.

Abstract: A rotary cutting machine 10, if inclined at large angles, provides positive supply of a cutting oil and avoids leakage of the cutting oil. The machine 10 has a machine body 14 and an arbor 18. An oil tank 50 is mountable to the machine body 14 so that the oil tank 50 is oriented at a given angular position about the central axis of the arbor 18. The tank body 54 has an interior space. The interior space is divided into a first interior part and a second interior part by an imaginary plane containing the central axis of rotation of the arbor. The first interior part is less in volume than the second interior part.

Abstract: A drill assembly, for example for drilling or coring concrete, has a drill column formed from a composite material. A track for a wall saw or for supporting other structures for movement along the track is formed from a composite material. A composite column, rail or other longitudinally extending composite structure having a hollow interior portion includes an internal support structure.

Abstract: Disclosed in one embodiment is a computer numerically controlled machine having a coolant nozzle that is mounted on a turret of the machine and that is rotatable relative to the turret under the control of a computer control system. The nozzle is fluidically connected to a source of a coolant. The machine includes a computer control system that is operatively coupled to the various components of the machine including the nozzle. In some embodiments, the nozzle may be moved to cause a constant contact angle with respect to one of said tool and said workpiece. In other embodiments, the nozzle may be moved to cause a constant coolant time to interface. Also disclosed are related methods.

Abstract: A drill assembly, for example for drilling or coring concrete, has a drill column formed from a composite material. A track for a wall saw or for supporting other structures for movement along the track is formed from a composite material. A composite column, rail or other longitudinally extending composite structure having a hollow interior portion includes an internal support structure.

Abstract: A quill lock assembly for locking a quill of a device such as a drill press is described. The quill lock assembly includes a cam assembly and a handle connected to the cam assembly. The cam assembly is connected to the device, such as with a mounting bracket or the like, and is capable of rotating for alternately engaging and disengaging the quill. The cam assembly is self releasing, allowing a user to translate the quill toward a work piece and release the cam assembly from engagement with the quill in one motion.

Abstract: An electric drill apparatus having a low profile is provided which comprises an annular cutter, a motor for rotating the annular cutter, a rotary shaft assembly for rotating the annular cutter attached to its leading end about a rotating, a rotation reduction mechanism disposed between the motor and rotary shaft assembly for transmitting a driving force of the motor to the annular cutter through the rotary shaft assembly, a feed mechanism responsive to an operation of a manual handle, for moving the rotary shaft assembly along with a straight line to advance or retract the annular cutter attached to the rotary shaft assembly with respect to a workpiece, and an adhesion base for securing the electric drill apparatus to the workpiece. The annular cutter has a plurality of cutting blades comprised of cemented carbide tips fixed on its lower end, thereby it is capable of rotating at a high speed.

Abstract: A jewelry setting/presetting tool for drilling countersink basins in jewelry and setting stones therein. The jewelry setting/presetting tool includes a bracket assembly including a board-like mounting bracket having an opening being disposed therethrough from a topside to a bottom side thereof; and also includes a tubular base member being secured in the opening of the board-like mounting bracket and having an open bottom end and an open top end; and further includes a work-piece support member being adjustably fastened in the tubular base member through the open bottom end thereof; also includes a tool support member being movably disposed in the tubular base member; and further includes a working tool assembly being securely and removably fastened to the tool support member; and also includes a means of moving the tool support member and the working tool assembly in the tubular base member.

Abstract: Composable machine tool for chip removal, on major workpieces, within wide diameter and/or great length clearance holes, made up of a shaft (1) upon which a machine base, controlled by a first engine (50) for the rotation movement and by a second engine for the translation movement, upon which are mounted the design tool elements. On the shaft (1) two support bearings (15) are mounted on both sides of the workpiece (29), all have spokes (16) each of which have radial slots (17) in which the groups (33) are inserted, regulated and locked to tighten the workpiece, on the shaft, a hydraulic jack (34) is mounted at least on one side, at the two extremities of the shaft (1), two slotted shoulders (40) are mounted to allow the jack (34) to exert the necessary pressure to lock the workpiece.

Abstract: A rotary cutting apparatus comprises a rotary shaft assembly having an axis and adapted to hold a cutting tool coaxial with the axis and, a feed mechanism for moving the cutting tool held by the rotary shaft assembly along the axis of the rotary shaft assembly. The rotary shaft assembly comprises a proximal rotary shaft, an intermediate, a distal rotary shaft which are successively telescopically connected, and a cylindrical housing rotatably holding the distal rotary shaft and movable along the axis together with the distal rotary shaft. The feed mechanism comprises a first rack mounted on the cylindrical housing and extending in parallel with the axis of the rotary shaft assembly, a second rack securely mounted on the body in parallel with the first rack; and, a pinion positioned between and engaged with the first and second racks.

Abstract: A rotary cutting apparatus comprises a rotary shaft assembly having an axis and adapted to hold a cutting tool coaxial with the axis and, a feed mechanism for moving the cutting tool held by the rotary shaft assembly along the axis of the rotary shaft assembly. The rotary shaft assembly comprises a proximal rotary shaft, an intermediate, a distal rotary shaft which are successively telescopically connected, and a cylindrical housing rotatably holding the distal rotary shaft and movable along the axis together with the distal rotary shaft. The feed mechanism comprises a first rack mounted on the cylindrical housing and extending in parallel with the axis of the rotary shaft assembly, a second rack securely mounted on the body in parallel with the first rack; and, a pinion positioned between and engaged with the first and second racks.

Abstract: In one aspect of the present invention, a drill press includes a feed assembly that can be switched from one side of the drill press to the other, allowing either right-hand or left-hand opeation. The drill press includes a drill housing with a generally vertically extending spindle rotatably mounted in the housing. A motor is operably connected to the spindle to drive the spindle, and a shaft extends through the drill housing generally transversely to the spindle. A hub assembly is interchangeably connected to one of the ends of the shaft, and a spring housing is interchangeably connected to the other end of the shaft. The spring housing has a first side that is situated adjacent the drill housing if the spring housing is received by one end of the shaft, and a second side that is situated adjacent the drill housing if the spring housing is received by the other end of the shaft. A torsion spring is contained within the spring housing.

Abstract: A drill assembly, for example for drilling or coring concrete, has a drill column formed from a composite material. A track for a wall saw or for supporting other structures for movement along the track is formed from a composite material. A composite column, rail or other longitudinally extending composite structure having a hollow interior portion includes an internal support structure.

Abstract: The portable drill press has a rack bar with a brace attached at one end. A pinion slide assembly is slidably engaged with the rack bar such that the pinion is in rotational engagement with a rack. The pinion slide assembly may be retained on the rack bar by a bolt. The pinion may be attached to a pinion shaft that may be rotated by a rotation lever. A mounting bracket may be attached to the pinion slide assembly for attachment of a hand drill. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: A chuck for holding a small bit and used with a table drill is provided for drilling a millipore. The chuck includes a holding jaw having four holders; a jaw-positioning guiding body with a square hole at the front portion for positioning the holding jaw; a crossing linkage for connecting the body to the jaw and having a crossing head and a projection portion between which a groove is formed; a guiding jacket matched with the crossing linkage and the body; a positioning screw nut matched with the jaw-position guiding body; a screw collar matched with the crossing linkage; and a bevel gear housing housed around the screw collar for adjusting the position of the holding jaw.

Abstract: The portable drill press has a rack bar with a brace attached at one end. A pinion slide assembly is slidably engaged with the rack bar such that the pinion is in rotational engagement with a rack. The pinion slide assembly may be retained on the rack bar by a bolt. The pinion may be attached to a pinion shaft that may be rotated by a rotation lever. A mounting bracket may be attached to the pinion slide assembly for attachment of a hand drill. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: A rigid and fragile material drilling machine is provided, its driving means for driving the upper and lower drilling bit approximating the rigid and fragile material includes a control handle; upper and lower rear gears and associated upper and lower first synchronizing wheels, said upper and lower rear gears being engaged with each other; upper and lower first timing chains being wound around said upper and lower first synchronizing wheels and upper and lower second synchronizing wheels, respectively; upper and lower second timing chains being wound around said upper and lower third synchronizing wheels and upper and lower fourth synchronizing wheels, respectively; and drilling rod guiding sleeves, the gear racks thereof being engaged with said the upper and lower front gears, respectively. The rigid and fragile material drilling machine of the present invention, which is simplified in structure with a compact design and low cost, can be conveniently used wherever a power supply is available.

Abstract: A stump removal tool for boring around a stump at ground level. The stump removal tool includes an elongate member having a first end, a second end and outer peripheral wall extending between the first and second ends. The elongate member has a generally circular cross-section taken transversely to a longitudinal axis of the elongate member. A connecting portion is attached to and extends away from the first end of the elongate member. The connecting portion is removably coupled to a power tool. A plurality of teeth is attached to an outer surface of the peripheral wall. The teeth are spaced from each other and are positioned in a pattern extending from the first end to the second end. The elongate member is attached to the power tool and rotated such that the teeth may be used for boring through a stump.

Abstract: A hole punching apparatus having a frame, a blade having a tubular cutting edge and a cavity, and a projection on the frame. The blade is movable relative to the frame between a retracted position and a cutting position. The projection moves into the blade cavity as the blade moves from the retracted position into the cutting position.

Abstract: The present invention is a low profile self-adhering drill having a feed mechanism having an axis of rotation, which is generally perpendicular to the axis of rotation of the drill motor. The feed mechanism includes a quill housing which houses a quill. A spindle is disposed within the quill for holding the tool. The spindle is in engagement with the quill and rotates about the travel axis of the quill relative to the quill and is moveable along the axis with the quill. A rack on the quill is parallel to the travel axis and engages a feed gear such than when the feed gear is rotated the rack and quill move along the travel axis.

Abstract: An improved drill stand is provided which includes a stand column slidably connected to a bearer unit so that the position or height of the bearer unit with respect to the stand column may be adjusted. The bearer unit includes a gear segment which is biased toward the retracted position by a reset spring. The gear segment is meshed with a geared slide rod. The geared slide rod may be disposed parallel to or perpendicular to the stand column. The slide rod is connected to a machine receiving part. Rotation of the gear segment with respect to the bearer unit against the bias of the reset spring results in movement of the slide rod in the machine receiving part towards an extended position. The machine receiving part is also connected to a bit stop rail. The bit stop rail is connected to a bit stop. The position of the bit stop along the bit stop rail is also adjustable. Movement of the machine receiving part towards the extended position is limited by engagement of the bit stop with the bearer unit.

Abstract: A magnetic based drill assembly comprising a support platform mounted to the magnetic base for attachment to a work piece includes a feed mechanism operatively connected to the platform for rectilinear movement between a fully retracted position and a fully extended position. The feed mechanism includes a splined collar slidably mounted to the splined arbor for movement relative to the splined arbor and for rotatably supporting a drive tool. The motor is mounted in a stationary position offset and substantially parallel to the feed mechanism to reduce overall height and weight of the drill assembly. As the splined arbor is located within a cylindrical feed arbor a liquid coolant can be directly injected on the drill tool and workpiece during operation of the drill assembly. Further, an electrical feed rate monitor provides a signal to the user to indicate the optimal feed rate of the drill tool.

Abstract: A drilling device for drilling with diamond tools has a drilling head having a drilling head housing, a drilling shaft rotatably supported in the housing, the drilling shaft having a tool side and being provided with a receiving opening for a drilling tool and extending from the tool side, the drilling shaft being formed as a hollow shaft over a part of its axial length, a drive having a rotary spindle, coupling means for connecting the drilling shaft with the rotary spindle of the drive, the drilling shaft being provided with at least one radial interruption for connecting an interior of the drilling shaft with an interior of the drilling head housing, the drilling head housing having an opening for selective connection of a supply conduit for a cooling/lubricating medium and a suction conduit for drilled material, and a clamping element for releasably connecting the drilling head with a clamping neck of the drive.

Abstract: An apparatus for controlling a tapping-drilling machine is disclosed in which holes can be formed by means of drilling tools, and threads can be formed by means of tapping tools. A worm is elongately formed on a spindle, and a worm wheel which is meshed with the worm is secured by a lateral shaft. At the leading end of the lateral shaft, there is installed a brake. In the preferred embodiment of the present invention, the electronic type brake is employed, and the electric current flowing through this brake is adjusted, so that the velocity of the vertical movement of the spindle sleeve (which is defined to be the ratio of the vertical moving distance to the revolutions of the spindle) can be automatically adjusted.

Abstract: A universal drill guide (10) comprising a base (12) being a frame-like configuration having a large central opening. A pair of elongated columns (14) are provided. A structure (16) is for pivotally mounting lower ends of the elongated columns (14) parallel to opposite sides of the base (12), so that the elongated columns (14) can go from upright positions to angled positions. A cross slide (18) rides upon the elongated columns (14). A bearing spindle assembly (20) is rotatively carried centrally within the cross slide (18). A guide chuck (22) is connected to the bearing spindle assembly (20) above the base (12). An adjustable cradle (24) is affixed to the cross slide (18) to hold an electric drill (26) in a stationary position, so that the drill chuck (28) can engage with the bearing spindle assembly (20) above the cross slide (18). A facility (30) is between the cross slide (18) and the elongated columns (14), for moving the cross slide (18) up and down on the elongated columns (14).

Abstract: A drill press has a drive motor with output shaft that drives a chuck through a rotatable and vertically displaceable quill and a first drive coupling which includes a pair of pulleys, such as cone pulleys, and a belt extended between the cone pulleys. A rotary power take-off in the form of an additional pair of pulleys and a drive belt extracts rotary power from the drive coupling between the motor and the chuck and transfers it to an oscillatory motion device. The device includes a worm and worm gear and an eccentrically mounted arm which convert rotary motion from the rotary power take-off into a reciprocating linear motion. A lever is pivotally mounted to the device with one end engaged with the quill and a remaining, opposing end coupled with the arm. Reciprocation of the arm causes reciprocation of the lever which causes reciprocation of the quill, chuck and any tool held in the chuck. The arm is releasably engaged with and is coupled with the lever through a detent block.

Abstract: A small scale milling machine including a machine base having an upright rotary wheel, a rotary column sleeve fixedly secured to the rotary wheel, a retractable support fixedly secured to the inside of the rotary column sleeve to hold a vertical mounting frame outside the rotary column sleeve, a machine head suspended from the bottom end of the vertical mounting frame and connected to the rotary column sleeve by a dovetail joint and moved vertically along a longitudinal rack on the rotary column sleeve, the rotary column sleeve having a longitudinal track at one lateral side, two stop blocks adjustably fixed to the longitudinal track at different elevations to limit the vertical moving distance of the machine head, and a scale at the front side along the longitudinal track for measuring the vertical moving distance of the machine head.

Abstract: An apparatus for adapting a vertical knee-type milling machine to accommodate a handle assembly on the left side of the machine includes an elongated rotational member having a shaft portion at one end and a sleeve portion at the other end that receives a left end of a pinion shaft. The pinion shaft and the rotational member are connected to prevent relative rotation therebetween. A clutch device can move the rotational member in an axial direction of the pinion shaft to engage an overload clutch with a driven gear to rotate the pinion shaft. Connected to the rotational member is a handle engagement device for selectively engaging the rotational member with a handle assembly.

Abstract: A portable electromagnetic drilling machine which is provided with an enclosed motor power control cord that connects the machine electrical control panel to a machine electric drive motor for a cutting tool spindle. The provision of an enclosed electric motor power control cord eliminates any wrongful or inadvertent lifting of the machine by said cord, and insures the lifting and carrying of the machine will be carried out by a handle on the machine housing.

Abstract: An improved automatic spindle moving device for a tapping/drilling machine is disclosed. A worm is formed on a spindle in an elongate form in the lengthwise direction thereof, and a pair of worm wheels are meshed with the worm, while the worm wheels are supported by horizontal shafts. A braking means is installed on the leading end of the horizontal shaft, so that the worm wheels can be braked, thereby reducing the revolution speed of the spindle. The power corresponding to the revolution speed reduction is converted to elevating or lowering the spindle, so that the spindle should move up and down. Thus repeated automatic continuous tapping is rendered possible, and the up and down movements of the spindle can be arbitrarily adjusted. Further, during a drilling operation, holes can be drilled to a uniform depth repeatedly, while a pedal can be utilized in tapping or drilling. Thus tapping internal threads and drilling holes are rendered more convenient and easier.

Abstract: A tube and rod shaping and finishing machine is adapted to employ a plurality of tools to machine a workpiece in a single operation by employing a spindle mounted tool cartridge mounted for extending axial travel on a support shaft which also serves as a stock stop.

Abstract: The invention is to an improvement for power tool presses of the type that clamp a portable tool, such as a drill, for use as the cutting means. A commonly used base, column, support bracket, rack and pinion and actuating handle are used. The press is provided with a pressure plate that is driven by the actuating handle to drive the cutting means. The power tool is securely and accurately positioned on a guide post or by parallel adjustable guide means. A single simple lock plate holds the power tool in position on the press or releases it for removal from the press. The tool is quickly removed from and quickly and accurately repositioned in alignment on the guide and easily clamped to it.

Abstract: A vertical spindle pedestal, especially for attachment to a lathe, which vertical spindle pedestal includes a vertical column and a motor driven vertical spindle vertically adjustable relative to the column, the vertical column being a hollow one on which a spindle housing is vertically slidably supported. A tension band is attached to the housing and guided over a reversing roll carried by the upper end of the column to a free end connected to a tension spring located inside the hollow column and anchored to it, the vertical column further carrying means for vertically adjusting the spindle housing along its length. The means for vertically adjusting the spindle housing includes a rotatable vertical lead screw supported by the upper end of the vertical column for rotation and against axial shifting which lead screw cooperates with a lead screw nut fixed to the spindle housing.

Abstract: In a drilling device, a holder is provided that is displaceable with respect to a foot in a feed direction. A drilling machine tool is carried by the holder. An electromotor provides a feed drive for driving the holder in the feed direction. The drilling machine tool and/or the holder are displaceable relative to the feed drive in an opposite direction to the feed direction by overcoming a counterforce. A switching element monitors the relative displacement and enables a signal to be derived for stopping the feed drive if a predetermined value of counterforce is exceeded. Motor current is limited to a predetermined maximum value during operation of the device.

Abstract: A top housing supported by a vertical post in a drilling machine is provided with a belt transmission mechanism incorporating a speed adjusting mechanism which can be operated easily and manually. The adjusting mechanism includes a knob connected to an adjusting rod which in turn is connected to a movable cone-shaped disk. The adjusting rod has a helical thread engaging with a projection of a fixed annular seat through which the adjusting rod passes. The adjusting rod is moved axially when rotated and moves the movable cone-shaped disk with respect to a fixed cone-shaped disk. A locking nut is threadedly sleeved around the annular seat to prevent the adjusting rod from rotation when the nut is tightened. The top housing is mounted movably on the vertical post and normally moved upward by a compression spring.

Abstract: An apparatus which is used to enhance the capability of in situ drilling of holes in existing pipes or other conduits, or virtually any cylindrical object. The apparatus includes a mounting unit which rests upon the pipe to be drilled and a drill mounting apparatus. The drill mounting apparatus is removably mounted to the mounting unit. The drill mounting apparatus is adapted to receive and position a drilling device which forms a hole in the pipe or the like.

Abstract: A boring apparatus wherein the size in the axial direction of the shaft of the manual handle horizontally supported can be made small-sized. A clutch is composed of spherical bodies, a cylindrical body having formed therein hole portions for receiving the spherical bodies, spherical body pressing means for pressing the spherical bodies to the outside or inside of the cylindrical body, and an engagement member having recessed portions engaging with the spherical bodies which are projected to the outside or inside of the cylindrical body, and the boring apparatus is constructed by using the clutch.

Abstract: A right-angle drive for a vertical milling machine to enable an operator to perform delicate horizontal work including a housing for attachment to a vertical milling machine with the housing including a horizontally displaceable rotating drive shaft to permit horizontal movement of the drive shaft instead of the bed of the milling machine during horizontal machining operations on the vertical milling machine.

Abstract: A boring machine includes a power unit having a housing, a drive member for engaging a boring bar, and a motor for driving the drive member to rotate relative to the housing. The boring machine also includes a bearing assembly comprising an inner bearing member defining a passage through which the boring bar extends, and an outer bearing member in which the inner bearing member is fitted in a manner permitting angular movement of the inner bearing member relative to the outer bearing member about axes perpendicular to the axis of the passage defined by the inner bearing member. In use, the bearing assembly is attached to a workpiece in a manner preventing movement of the outer bearing member relative to the workpiece, and a collapsible torque transmission linkage connects the housing of the power unit to the outer bearing member, whereby the housing unit is held against rotation relative to the outer bearing member.