Abstract: A rotary power tool is provided having a remotely actuated chuck device. The chuck is mounted onto the end of a drive spindle that extends from the casing of the power tool. The chuck includes an outer sleeve member that is axially movable relative to a drive spindle between a gripping and release position. A sleeve actuating device is provided having a first member engaged with the outer sleeve member and which extends generally radially outward from the drive spindle or chuck. The first member is movable in a direction so as to move the outer sleeve member between the gripping position and release position. The sleeve actuating device includes an actuator member configured with the first member to move the first member upon an external force being applied thereto. A base is rotatably advanceable and concentric on the casing. A helical opening is formed in the base.

Abstract: A chamfering apparatus for chamfering a work has an adapter which surrounds a tool support, has one end fixed to a casing and the other end projecting from the casing, and is arranged coaxially with the axis of a rotating shaft. This chamfering apparatus includes an eccentric ring rotatably mounted around the adapter, a lock plate rotatably mounted around the eccentric ring, a work guide attached to the lock plate and having a predetermined guide direction to guide a tool support along the work, and keeping means for keeping the angle between the guide direction of the work guide and the output shaft of a motor at a predetermined value when the lock plate and the work guide are translated with respect to the axis of the rotating shaft by rotating the eccentric ring with respect to the adapter.

Abstract: A bit attaching arrangement for a power tool includes a bit locking member rotatable with respect to the output shaft of the power tool. A first gear is fixed to the bit locking member so that rotation of the first gear causes rotation of the locking member. A second gear is fixed to the output shaft so that rotation of the second gear causes rotation of the output shaft. A third gear engages both said first and second gear simultaneously and is capable of rotation by an operator of the power tool. Rotation of the third gear results in counter rotation between the bit locking member and the output shaft so as to result in securement of the bit to the shaft. A further aspect of the invention includes a pinion shaft onto which the third gear is mounted.

Abstract: A router guide attachment adapted for mounting on the underside of both specialized and standard router base plates accommodates workpieces having both straight and curved edges. In one disclosed embodiment, one or more rigid members includes a slotted aperture, with one or more mounting fasteners being used to adjustably secure the guide in position at a desired lateral depth by inserting each mounting fastener through at least one of the slotted apertures and into one of the base plate holes. One or more of the workpiece-contacting surfaces may further include a wheel rotatably mounted to the rigid member, facilitating rolling engagement against the workpiece. In an alternative embodiment, a plurality of physically separated rigid members are provided, each having a slotted aperture and one or more workpiece-contacting surfaces.

Abstract: A plate joiner including a fence support, a drive, and a fence system. The fence support includes a cutter and a contact surface, which defines a cutter slot. The cutter is arranged and configured to protrude from fence support through cutter slot to make a plunge cut into a surface of a workpiece when the contact surface is pressed against the surface and the cutter is plunged into the workpiece by pushing on a rearward handle portion of the tool. The drive is arranged and configured to rotatably drive the cutter through a motor.A preferred plate joiner is configured for substantially continuous adjustment of fence height while restraining lateral and tortional movement of the fence and providing an accurate measure of the height of the fence from any point in the thickness of the blade.

Abstract: Improvements made to a router relate to a router chuck and collet mounting system. In a preferred embodiment, the present mounting system comprises mating a top face of a router chuck with the lower surface of an inner race of an armature shaft bearing and mating an inner diameter of the chuck with an outer diameter of the armature shaft to align the chuck with the shaft. Additionally, a cavity through the chuck may be used to accept a router bit shank so that it extends up into a lower end of the shaft in order to permit the shank to extend upward, closer to the armature shaft bearing. This arrangement reduces router bit run-out.

Abstract: A rotary power tool, such as a router, includes an actuating device engaged with a chuck device to move the chuck device between its gripping and release positions. The actuating device includes a lever member that extends axially relative to a casing of the power tool within an inner circumference of a base member. This lever member is movable relative to the casing and is engaged with the chuck so that movement of the lever is imparted to the chuck device causing the chuck device to move axially between its gripping and release positions.

Abstract: The present disclosure relates to a dust-collection system for use with a power tool such as a router. The system includes a router sub-base adapted for connection to a router. The router sub-base defines an opening configured to receive a cutting tool of the router. The system also includes lower and upper vacuum flowpaths. The lower vacuum flowpath is arranged and configured to evacuate dust from beneath the opening of the router sub-base. The upper vacuum flowpath is arranged and configured to evacuate dust from within the opening of the router sub-base.

Abstract: A lamella groove milling tool has a drive shaft receiving the cutter. The drive shaft is arranged to be vertically displaceable with respect to the carriage of the milling tool. The displacement preferably takes place by means of a positioning body which is rotatably connected with the housing by way of a thread and which is connected with the drive shaft. The positioning body has resilient detent devices in order to be able to adjust the rotating position in lockable discrete steps. This achieves reproducible height adjustments of the milling plane of the milling tool.

Abstract: Improvements made to a router relate to ergonomic router handles. The preferred router handles are generally elliptical in shape and have one end narrower than the other end. The handles are shaped to provide an operator an infinite number of angles to which the operator's hand may effectively grip the handles. Additionally the handles provide an outer surface which provides a flat tactile grip area. The combination of these elements, along with the shape and location of the preferred trigger and locking arm switch used to activate the preferred router, provides an operator, while operating the router, with the ability to find and use a handle-holding position which is comfortable for the individual user for holding the handles.

Abstract: There is provided a groove forming apparatus which permits easy formation of a curved groove such as a semicircular groove or the like, resulting in high degree of freedom in working. The apparatus comprises a trimmer 1 provided with a chuck 11 capable of coaxially supporting a straight bit 17 and with a rotation mechanism 12 arranged behind the chuck 11, for rotating the chuck 11 around an axial line thereof; and a supporting body 2 arranged ahead of the chuck 11 and having an abutment surface 37 with which a work W is to be in contact, for supporting the trimmer 1 so as to be movable back and forth in a direction perpendicular to the abutment surface 37 and swingable along a plane perpendicular thereto. A tracing pin 33 movable together with the trimmer 1 is moved along the groove portion 32 formed on the gauge plate 31 of the supporting body 2.

Abstract: A rotary power tool is provided having a remotely actuated chuck device. The chuck is mounted onto the end of a drive spindle that extends from the casing of the power tool. The chuck includes an outer sleeve member that is axially movable relative to the drive spindle between a gripping position and a release position. A sleeve actuating device is provided having a first member engaged with the outer sleeve member and which extends generally radially outward from the drive spindle or chuck. The first member is movable in a direction so as to move the outer sleeve member between the gripping position and the release position. The sleeve actuating device includes an actuator member configured with the first member to move the first member upon an external force being applied thereto. In this manner, an operator can move the chuck device between the gripping and release positions at a location remote from the chuck device and drive spindle.

Abstract: A system for guiding a cutting tool utilizing a beam generator and a platten having a surface which is capable of presenting a pattern. The beam impinging on the platten is discernable. The beam generator is aligned with the cutting portion of the cutting tool such that the beam on the surface of the platten represents the position of the part of the cutting tool relative to a work piece. An operator may cut a pattern in the work piece by following the pattern on the platten with the beam image on the platten.

Abstract: A mobile unit (1) for fabricating solid surface construction materials is provided, as is a method of use therefor. The mobile unit is equipped with climate control units (23, 23a) fabrication equipment (24) and other environment control equipment and is brought directly to a worksite. Therefore, solid surface construction materials can be fabricated onsite, instead of at a remote fabrication shop. In the fabrication process according to the present invention, dimensional information is laid out directly onto the solid surface material stock. This eliminates the frequently inaccurate use of a temporary template, as in the known art.

Abstract: The fixed-base router includes a base assembly and a cylindrical motor housing. The base assembly has a tubular member defining a vertically disposed inner cylindrical surface with two longitudinally extending support ribs. The tubular member has a longitudinal slot or opening between a pair of adjacent inner projections. Only the two ribs and the inner projections engage the cylindrical motor housing when the base tubular member is clamped to the cylindrical motor housing. The two support ribs and the slot are substantially equally spaced from each other. Another set of ribs prevents tilt when the tubular member is in an unclamped condition, and a deflection limitation rib is provided to prevent excessive deflection of the base tubular member when the clamping force is too high.

Abstract: A simple and quick manner for centering a sub-base of a fixed-base router. The sub-base is provided with two sets of peripheral holes and a large central opening. One set of holes is countersunk and receives flat-head screws; the other set of holes is counterbored and receives pan-head screws. The router is sent from the factory with the sub-base attached by the flat-head screws. To center the sub-base the flat-head screws are removed and the pan-head screws are inserted to loosely mount the sub-base. The counterbored openings are oversized to allow lateral movement of the sub-base. A cone element is installed in the collet and engaged with the sub-base through the central opening. The cone element fully abuts the opening to center the sub-base, the pan-head screws are tightened and the cone element is replaced by a router bit.

Abstract: A detachable battery pack is connectable to hand-held power tools, such as spiral cutting tools, in which cuts are made by positioning the axis of the cutting tool motor housing perpendicular to a workpiece surface, and moving a cutting tool bit through the workpiece in a direction perpendicular to the axis of the bit to remove material from the workpiece. The battery pack allows the cutting tool to be utilized without an electric cord and without the need of a power source near-by, thereby increasing maneuverability, safety, and range of use. The battery pack is connected to the motor housing of the power tool by being received by a receptacle. The receptacle is preferably formed to include one or more storage compartments therein, accessible through apertures in the receptacle for storage of additional cutting tool bits.

Abstract: A biscuit cutter is provided for cutting an arcuate slot in the edge surface of a workpiece. The biscuit cutter is made of a base, a drive motor, a rotary cutter blade and an adjustable fence. The base is provided by the first planar surface having an elongated slot through which the rotary cutting blade is positionable when a plurality of extended positions corresponding to a selected one of a plurality of predetermined sized biscuits. The adjustable fence has a second fence surface for engaging the workpiece and has a centerline indicia and a plurality of slot length indicia spaced about the centerline indicia for providing a visual indication to the user of the length of the slot to be formed in the workpiece for each of the plurality of biscuit sizes.

Abstract: The present invention comprises a ceiling tile cutting apparatus for the cutting and edging of successive tiles with corresponding angular cuts in a corresponding manner. The apparatus comprises a plurality of vertically arranged support legs connected by a plurality of horizontal members and a planar table member of generally rectilinear configuration attached at the upper end of the support legs. The table member has a first or proximal edge, a second or distal edge parallel to the first edge, a left hand edge and a right hand edge generally parallel to the left edge. An elongated slot extends through the table member parallel to the right hand edge of the table. A pair of guide rails supported over the elongated slot, and a motorized cutting tool mechanism is arranged to slide on the guide rails, with a cutting tool extending into the slot. An adjustable telescopable ruler is pivotably arranged on the table.

Abstract: A device and associated method for simultaneously cutting a section of laminate to be inlaid and the underlying laminate to receive the inlay, which includes a portable cradle and a router mounted on an adjustable length shaft fitted into the chuck of the router, so that the distance that the cutting blade extends below the base of the portable cradle can be adjusted, the router is held within a rectangular router box split lengthwise on each side, hingedly held together on one side and detachably secured together on the opposite side by spring tension, with the router firmly attached to the top half so that the router cutting blade may be raised from the laminate surface by rotating the top half of the case around the hinge, while the angle of the cutting blade to the laminate is adjusted by means of adjustment screws on each side of the end of the router box opposite to the cutting blade, which rotate the router box up or down around a hinge means, on the bottom of the router box adjacent to the cutting bla

Abstract: A plate joiner including a fence support, a drive, and a fence system. The fence support includes a cutter which is arranged and configured to protrude through a cutter slot in a contact surface to make a plunge cut into a surface of a workpiece. The drive is arranged and configured to rotatably drive the cutter through a motor. A preferred fence system includes includes a trunnion which pivotally couples the front fence to the fence system and, at any selected distance from a top face of the workpiece to the fence, maintains a constant distance from the top face of the workpiece to the cutter as the front fence angle is adjusted. A preferred fence system also includes an angle segment member, which has two slots used to position the fence in two ranges of fence angles.

Abstract: A work piece cutting apparatus for cutting profiles on the angular end of contoured molding sections. A system having a block and table allowing for fine, precision, longitudinal and transverse movements of a cutting member to impart angular cuts to the molding section. The cuts result in a profile corresponding to the molding contour enabling the cut work piece to interconnect in a smooth, flush-fitting corner joint. No template is required.

Abstract: The fixed-base router has an annular base member supporting a cylindrical base member. A cylindrical motor housing is telescopingly received within the cylindrical base member; the motor housing includes three vertically aligned notches. A vertically disposed rod is rotatably mounted by the cylindrical base member. The rod includes an external threaded area in threading engagement with a threaded bore in a lever. The lever includes a latch for engagement with a selected one of the notches for coarse vertical adjustment. Fine vertical adjustment is obtained by rotating the rod with the latch in engagement with one of the notches.

Abstract: The fixed-base router includes a base assembly and a cylindrical motor housing. The base assembly has a cylindrical member which is hollow defining a vertically disposed inner cylindrical surface with two axially extending ribs. The cylindrical member has an axial slot between a pair of adjacent inner projections. Only the two ribs and the inner projections engage the cylindrical motor housing when the base cylinder is clamped to the cylindrical motor housing. The two ribs and the slot are substantially equally spaced from each other.

Abstract: A power tool (e.g. a laminate trimmer 10) includes an adjustable support for setting the position of the motor unit (16). The support includes a first collar element (24) secured to the motor and a support upright (14). A stud (32) threadedly secured to the collar is slidable in a slot (28) and co-operates with the slot (28) to maintain confronting surfaces (14a and 26a) of the elements in face to face engagement. The elements are thus constrained to slide only in a direction parallel to the upright (14). A clamping screw (36) threadedly engaged in the stud can be tightened to lock the adjustable support at a desired position. The arrangement provides high stability to permit adjustment of the motor position even when the motor is operating.

Abstract: According to the present invention, a rotary trim saw includes a rotary drive shaft coupled to a source of rotary power, while a sleeve is disposed about the drive shaft. The drive shaft is arranged for rotation relative to the sleeve. Also, a rack is disposed on an outer surface of the sleeve and parallel to the drive shaft, and a circular cutting blade is disposed at an end of the drive shaft. A base is attached and has a pinion for engaging the rack and an adjustment knob coupled to the pinion for controlling the position of the blade relative to the base.The rotary trim saw may also have a base having surface engaging wheels attached to the base such as ball bearings although other types of wheels would also suffice such as coaster wheels. The base may also include a set screw for locking the base to the sleeve, so as to lock the cutting blade relative to the base or may also include a level attached to aid in determining a cutting angle. Retractable safety shields may also be attached to the base.

Abstract: A universal tilt base accommodates general-purpose router motor housings with diameters of 3-1/2 inches and larger. The motor housing is received by a collar tiltingly attached to a table base with an aperture, so that when a cutting bit attached to the router motor, the bit protrudes through the aperture to effect a workpiece, with means to independently adjust both the depth and tilt angle of the cutting bit. In the preferred embodiment, the collar is configured to accommodate router motor housings which either slide without rotation to adjust cutting depth and those which may be rotated during depth adjustment. To accommodate at least two of the types which do not rotate during depth adjustment, the collar is configured to receive motor housings having an at least one outward protrusion.

Abstract: A router guide apparatus comprising a guide carrier member located on the ends of guide rods extending into the base part of the router, the carrier member rotatably mounting a guide follower member of non-circular disc form for rolling engagement with and along an edge of a workpiece, the follower member having its workpiece engaging surface abraded to assist in its frictional non-slip engagement with the edge of the workpiece. The guide apparatus may be provided with spring members to ensure constant engagement of the follower member with the edge of the workpiece.

Abstract: In a guide device for cutting a groove of this invention, a rectilinear guide member (10) comprises a pair of guide members (11, 12), where the opening width (W.sub.1, W.sub.2) of an opening (26) defined between the guide members (11, 12) is set to be the same as the diameter of a rotary bit of a router (22). A dado (2) having a width that is the same as the thickness of a board to be used as a shelf is formed by operating the router (22) with a scrap piece of that board (3a) inserted between the guide members (11, 12) to get an accurately cut dado.

Abstract: A plunge router constructed for mounting beneath a work table has a base adapted to be connected to a work table and defining a central opening, a router head assembly comprising a drive motor, a drive shaft, a collet and a housing, a plunge guide assembly supporting the router head assembly for movement toward and away from the base, a retracted position adjusting mechanism coacting between the base and the head assembly for blocking movement of the head assembly to a first default position from a second, adjusted retracted position and comprising a threaded force transmitting member fixed to the base and projecting toward the head assembly, an abutment element projecting from the head assembly transverse to the direction of extent of the threaded member and an adjustment member threaded to the force transmitting member and engagable with the abutment element to adjustably change the head assembly second retracted position. The head assembly also includes a second head assembly abutment element.

Abstract: A biscuit joiner for engaging a workpiece to form a slot sized to receive a carpentry biscuit is provided. The biscuit joiner has a base with a fence surface for engaging the workpiece. The fence surface has an elongated opening formed therein. A motor is fixed to the base, and has a drive shaft. A link has a first end pivotally mounted to the base, and a second end rotatably mounted to a rotary cutter blade. A drive mechanism connects the drive shaft to the rotary cutter blade. An actuator is operable to pivot the link relative to the base. Pivoting the link causes the rotary cutter blade to shift relative to the fence surface between a retracted position in which the rotary cutter blade is within the base, and an extended position in which the rotary cutter blade extends through the elongated opening in the fence surface to cut the workpiece. Alternatively, a slidable carriage is received on the base. The motor and rotary cutter blade are mounted to the carriage.

Abstract: A machine for routing end portions of frame pieces produces a channel that extends with increasing spacing from the bevelled face of the frame piece. Structure on the machine supports the frame piece in a plane that converges toward the plane in which the router bit lies, and cutting is carried out by effecting either curvilinear or rectilinear relative movement of the router and the frame piece or pieces.

Abstract: An offset router guide assembly for guiding the movement of a router around an outer edge of a structure having corners during rough cutting of a covering material overlying the structure to provide a predetermined overlap beyond the outer edge of the structure includes a base member having an aperture for passage of a router bit, and a guide member attached to the base member by a spacer member extending between the guide member and the base member to provide a gap therebetween. The guide member has a radius greater than the radius of the router bit for offsetting the router bit a predetermined distance from the outer edge of the structure corresponding to such predetermined overlap. The spacer member has a generally triangular cross section and fits entirely within an area between the base plate and guide member bounded by wall portions of the apertures in the base member and spacer member and the intersection of two arcs with the aperture wall portions and with each other.

Abstract: An accessory carriage unit attachment for electric router, composed of one main elemental component: the slab carriage unit securable to the router at a perpenduclar angle to the major guide side surface, with attachable plastic means for greater slidable movement, with optional; legs, work stock/piece guide fence, and handle for more versatility, hence a mounting platform that need not be removed, thus facilitating most operations of a router, in portable or table router configuration.

Abstract: A method for attaching an interduct to a duct by forming a groove on an outer surface of the duct and pressing out that portion of the duct encompassed by the groove to form an opening in the duct. A saddle is then attached to the duct and the interduct the attached to the saddle. The apparatus used for forming the opening in a duct comprises a template having an arcuate portion with a radius substantially the same as the duct. The template has a window portion having substantially the same shape as the opening to be formed in the duct. A base plate is provided having an arcuate portion with a radius substantially the same as the radius of the arcuate portion of the template such that the base plate is slidably fittable over the template. A cutting device is attached to the base plate and has a cutting element extending through the base plate.

Abstract: A device and method are provided for reducing a length of an annular core on which a roll is mounted. If the core extends beyond the end of the roll, the roll is unstable when it is stacked. This device and method will trim the length of the core extending beyond the end of the roll to provide a flat face across the entire end of the roll. A stable stacking arrangement will therefore be ensured. The router includes a collar, a router bit and a transparent disk or plate mounted thereon. The router bit will chip away the portion of the core which extends beyond the end of the roll. A vacuum can be operatively attached to the router in order to remove chips formed by the router bit. The collar on the router will keep the bit spaced from the roll to prevent damage to the roll. This collar and the transparent disk or plate will also aid in guiding the router.

Abstract: A depth of cut lock mechanism for a plunge-type router having a drive motor enclosed within a motor housing. The motor housing is attached to a base plate by a pair of spatially separated guides. Each guide has a guide sleeve attached to the motor housing and a guide tube attached to the base plate and slidably received in the guide sleeve. The lock mechanism has a lock disc rotatable between a lock position and a release position by a manually activated lever displaces the lock disc toward the unlocked position. The lever is pivotable about an axis parallel a guide tube and is located adjacent to a handle of the router so that the lever can be activated by the user while grasping the router handle.

Abstract: A router attachment is provided for converting a small hand-held rotary cutting tool into a miniature router. The attachment has a base having a planar lower surface, a central aperture, an upright column and a handle. A tool holder slidably mounted on the upright column is provided with a clamp for affixing the rotary cutting tool thereto. A height adjustment mechanism enables the user to adjust the height of the tool holder relative to the base planar lower surface and a lock mechanism releasably locks the tool holder to the base column during use.

Abstract: The height adjustment ring assembly is provided for adjusting height of a router motor housing relative to a router body, the router being movable between upright and inverted positions. The housing includes external threads formed thereon. The height adjustment ring assembly comprises a support member secured to the router base, the support having a radially extending flange portion. An annular adjustment ring includes an internal thread for cooperation with the external threads. Means for entrapping the flange portion with respect to the adjustment ring is provided, thereby limiting relative axial movement while allowing free relative rotation of the adjustment ring with respect to the support member for adjustment of the router motor housing regardless of router position.

Abstract: A rotor height-adjustment mechanism is disclosed which is designed for mounting to the adjustment rod of a router mounted in a router table. The mechanism includes a flexible shaft member which may flex around and over interfering projections extending from the router housing. The flexible shaft has an engagement end with a threaded, hollow insert which engages the threaded adjustment rod of the router and further has a driving end with a drive means engagement member such as a socket which permits the height of the router within the router table to be adjusted.

Abstract: A plunge-type router comprising a motor housing having a driving motor provided therein, a base having a workpiece-engaging flange member and a support plate axially movable with respect to the flange member along substantially perpendicular guide means, the support plate being biassed away from the flange member and provided with a bore to receive the motor housing and clamping means to secure the housing in the bore, and locking means effective to prevent undesired separation of the motor housing from the support plate.The potential hazard presented to the operator by accidental separation of the motor housing from the base is thereby avoided.

Abstract: A router with a cutter head containing the drive motor so that the cutter head is held in a displaceable manner at guide columns which are secured at a base plate which is provided with a central opening for the passage of a cutter inserted in the tool holder of the cutter head, is provided in the base plate with a suction intake channel which surrounds the central opening over at least the larger part of its periphery and to which a suction extraction channel is connected. The suction extraction channel runs inside one of the guide columns which for this purpose has been constructed so that it is hollow.

Abstract: A workpiece trimmer power tool (eg. a laminate trimmer 10) has a waste collector attachment (26) for collecting dust and other waste material generated by the trimmer in use. The attachment can be fitted in a first position (FIG. 2) adjacent to an edge of the trimmer base (12) adapted for trimming a workpiece face, or in a second position (FIG. 5) adjacent to the underside of the trimmer base (12) adapted for trimming an edge surface of a workpiece. The attachment (26) provides a handle surface, also a guard surface and a fence surface for controlling edge trimming. Skis can be attached to the trimmer base (12) for face trimming.

Abstract: The present invention comprises an attachment for a portable router which includes a raised sub base which attaches to the base plate of a router. A dust hood slides over the motor and is coupled to the sub base. The handles of the router are taken off and mounted on to the hood. A top rubber casing slides over the motor and is coupled to the top of the dust hood. A vacuum is coupled to the dust hood for the removal of chips and dust from the work area. The sub base raises the router off the work surface allowing more air volume around the router bit to aid in the quickened removal of dust and chips from the work area into the vacuum. The sub base is circularly designed, with an outer lip, allowing an operator to guide the router on a template. The router motor may be adjusted up or down in a conventional manner to obtain a desired depth of cut, through an aperture of the dust hood.

Abstract: An improved collet lock arrangement for a hand-held power tool having a housing is provided. The collet lock arrangement includes a powered rotatable shaft including a base portion and distal end portion defining a collet for adaptably connecting a driver tool attachment thereto and a locking structure for securely locking the shaft to the housing to selectively prevent the shaft from rotating when in a locked position while allowing the shaft to freely rotate in an unlocked position. The locking structure has a locking sleeve coaxially coupled around the shaft for axial movement relative thereto between the locked and unlocked positions, a clamp nut fixedly connected to the housing, and a sleeve guide non-rotatably coupling the locking sleeve to the clamp nut. The clamp nut and sleeve guide are coaxially arranged for coaxially receiving therethrough the shaft and the locking sleeve.

Abstract: An apparatus for defining arcs of mixed radii on a workpiece includes a base, a first selectively extensible arm rotatably mounted to the base, and a second selectively extensible arm rotatably mounted to the first arm. An assembly for defining the arm on the workpiece is mounted to the second arm. An assembly is provided for releasably retaining the first arm at a first disposition for selective movement of the arc defining assembly through a first predetermined angular displacement to define a first arc with a first predetermined radius and to retain the second arm at a second predetermined position for selective movement of the arc defining assembly through a second predetermined angular displacement to define a second arc having a second predetermined radius.

Abstract: A cutting and beveling device for simultaneously cutting and beveling a selected work piece. The cutting and beveling device includes a work table and a support assembly secured to the work table. The work table defines a work surface for supporting the work piece. The support assembly supports a router in a manner such that the router is suspended over the work surface and is movable in a linear direction between the ends of the work table. The router receives a bit configured to cut and bevel simultaneously. The work table includes a slotted opening which receives shavings resulting from the cutting and beveling operation. The work table also includes a vacuum system for removing dust and particles resulting from the cutting and beveling operation.

Abstract: A rechargeable portable routing tool comprising a router having a hollow and gripable housing, an electric motor having a fixed stator secured within the housing and a rotatable rotor extended therefrom, a bit fastener mechanism for receivably coupling a bit to the rotor for trimming, and a power circuitry mechanism for receiving electrical power and selectively controlling its application for rotating the rotor; at least one rechargeable battery coupleable to the power circuitry mechanism and housing of the router for supplying electrical power; and a recharging mechanism adapted to be coupled with an external power source and coupleable with the battery for recharging it with electrical power.

Abstract: A sub-base is provided for a router adapted to engage a stationary guide while cutting a workpiece. The sub-base includes a plate and an elongated guide-edge. The guide-edge extends from a linear edge of the plate in a manner as to lie in outboard shielding relationship to the router base. The sub-base further includes means for detachably securing the plate to the base with the guide-edge outboard of the base. The plate is positioned such that a generally planer surface of the plate engages the workpiece and the guide-edge extends to engage the stationary guide. The router bit extends through a central opening in the base and further extends through a central opening in the plate of the sub-base to cut the workpiece.

Abstract: A router (21) has a base (70) joined to a body (60) by columns (62,64), the latter being slidable in sleeves (66) in the body (60). A spring (90) between the base (70) and the body of the router serves as a guard for the router bit (76).