Abstract: An automatic position-locking tool carrier apparatus and method include a carriage that rides on a first rail and a second rail translatably connected to the carriage perpendicular to the first rail. Pinion gears that engage with the two rails are attached to the carriage and coupled to position encoders which transmit position signals to a controller. The controller produces control signals to control brake mechanisms coupled to the pinion gears. Translational motion of the carriage and the second rail are limited or prevented when the position of the carriage and the second rail are within predetermined limitations from a predetermined location, fixing the position of an end-effector head attached at one end of the second rail. The carriage and the second rail are propelled by forces external to the system.

Abstract: A base frame for holding fixtures used in woodwork includes an extruded body having a raised top central portion formed into a dovetailed open-topped upper channel, two lowered wing portions located at each lateral side of the upper channel and formed into two symmetrically identical open-topped side channels with a height difference between the tops of the upper and the side channels, and a big-size open-bottomed lower channel formed below said upper channel and said two side channels. With the height difference between the upper and the side channels, two base frames may be perpendicularly connected to each other in the same plane using a U-shaped connecting bracket flush with the top of the upper channel, or superposed with the upper channels facing toward each other by locking inserting blocks in each open-sided channel formed between two side channels at the same side of the two superposed base frames.

Abstract: The present invention mainly aims to provide cutting method and cutting apparatus for manufacturing a guide rail of a rolling guide device by efficiently cut-working a long scale hardened steel. In order to achieve such object, there is provided a cutting method of linearly cutting a work surface (3) of the long scale hardened steel (2) along the longitudinal direction thereof. In this process, it is desired to arrange a plurality of CBN tools (7) along the longitudinal direction of the long scale hardened steel (2) to thereby sequentially cut the work surface (3). Furthermore, a cutting apparatus of the present invention comprises a fixing device (4) for fixing the long scale hardened steel (2), a tool rest (5) which is guided by a guide device (6) disposed along the longitudinal direction of the fixing device (4) and the CBN tool (7) cut-working the work surface (3) of the long scale hardened steel (2) held by the tool rest (5).

Abstract: The disclosure describes a slitting saw used to cut an opening in a pipe. The saw generally comprises a housing mounted on an XYZ positioning system, a drive assembly and a cutting blade. A motor is used to drive a gear train which creates rotating of the cutting blade. The cutting blade makes a bevel cut into the pipe which allows for a new piece to be welded into the window cut by the present invention.

Abstract: A cutting tool and track system includes a multi-segment track assembly configured to be removably attached to a surface of a workpiece, a carriage assembly configured to ride along the track assembly, a carriage drive mechanism arranged to drive the carriage assembly along the track assembly, a cutting tool assembly connected to the carriage assembly, and a tool driving system connected to the cutting tool assembly. The cutting tool assembly rotatably supports an end mill type cutting tool that may be driven in a radial cutting plane about the axis of a tubular workpiece or along a workpiece surface. A method is provided for cutting a workpiece wherein a cutting tool assembly rotatably supports an end mill mounted for travel along a predetermined transport path in a cutting plane about a central axis of the workpiece wherein the end mill is first fed through the wall thickness of the workpiece and the cutting tool assembly is moved along the transport path in the cutting plane to cut the workpiece.

Abstract: A method and apparatus for forming patterns in a flat, plastic material, such as, for example sheet vinyl, linoleum, and other flat sheet floor covering. The apparatus comprises a router die and trimmer base affixed to a router machine. The router die is comprised of two guiding members, a first guiding member that directs the router blade between an edge of a pattern and an edge of an overlay. A second guiding member follows the blade after the groove is cut.

Abstract: A jig assembly for use with work piece and a hand-held power tool having a cutting bit includes a first member and at least one insert. The first member has a first opening and is configured to be positioned adjacent a first side of the work piece. The at least one insert is configured to fit within the first opening in the first member and includes a second opening. At least one of the first opening and second opening is configured to allow a portion of the hand-held power tool to pass therethrough to contact the work piece and to act as a guide for the hand-held power tool as it removes material from the work piece.

Abstract: A fixation device for positioning a rotating machine tool onto a template, the template having at least one hole and at least one locating pin. The fixation device includes a housing with a housing tool end and a housing template end, a seat located on the housing tool end for coupling with the rotating machine tool, and a clamping mechanism disposed at least partially at the housing template end for coupling with at least one locating pin.

Abstract: A scoring apparatus for placing a scoring line on a back surface of a piece of vinyl or rubber cove molding, in order to easily conform the molding about sharp corners. The scoring apparatus uses a frame for pivotally supporting a router between an inoperative position and a work engaging position. The router is mounted on a base that slides within a slot in the frame so that it can be drawn across the cove molding to provide the scoring line.

Abstract: A production system for manufacturing a workpiece comprises an index system including a plurality of index devices removably mounted on the workpiece at known longitudinally spaced locations therealong, and a longitudinally extending index member releasably engaged with at least two of the index devices such that a position and orientation of the index member are fixed relative to the workpiece by the index devices, the index member having position-indicating features distributed therealong. The production system further comprises a machine module mounted for longitudinal movement along the index member and operable to perform an operation, the machine module being operable to detect the position-indicating features on the index member and thereby determine a position of the machine module relative to the workpiece.

Abstract: A power tool accessory system has a first accessory with a first connector for attaching the accessory to the power tool, and a second connector for attaching a second accessory to the first accessory. Preferably both attachment means are manually operable whereby the first accessory may be attached to a power tool and to a second accessory without the use of tools.

Abstract: An apparatus and method for in-situ milling includes a support and a pair of spaced apart rails attached to the support. The support and rails are mounted between a pair of opposed mill housing wear plate surfaces. A milling assembly is reversibly mounted on the rails in either of a first orientation and a second orientation. In the first orientation, the milling assembly mills one of the wear plate surfaces. The milling assembly is reverse mounted on the rails to the second orientation for milling the other of the wear plate surfaces. This permits the support and the rails to remain in one position between the wear plate surfaces requiring only the milling assembly to be moved to accomplish milling of each of the wear plate surfaces.

Abstract: An apparatus and method for in-situ milling includes a support and a pair of spaced apart rails attached to the support. The support and rails are mounted between a pair of opposed mill housing wear plate surfaces. A milling assembly is reversibly mounted on the rails in either of a first orientation and a second orientation. In the first orientation, the milling assembly mills one of the wear plate surfaces. The milling assembly is reverse mounted on the rails to the second orientation for milling the other of the wear plate surfaces. This permits the support and the rails to remain in one position between the wear plate surfaces requiring only the milling assembly to be moved to accomplish milling of each of the wear plate surfaces.

Abstract: A cutting tool and mounting system includes a tool carrier arranged to be mounted onto a workpiece, a cutting tool assembly carried by the tool carrier, and a tracking assembly connected to the cutting tool assembly and positioned to follow the contour of an outer surface of the workpiece. The cutting tool assembly includes a cutting tool arranged to be rotated about a longitudinal axis and a tool driving system connected to and arranged to transmit rotary input motion to the cutting tool. The cutting tool is secured by the tool driving system to be fed along its axis of rotation and transversely of its axis of rotation for cutting a workpiece through a wall thickness of the workpiece to impart a beveled surface to a severed end portion of the workpiece.

Abstract: A fixed base router with an adjustable depth of cut comprising a motor unit including a first threads and an output spindle, a router bit operatively connected to the output spindle of the motor unit, an adjustment ring including a second threads for cooperation with the first threads of the motor unit for adjustment of the depth of cut of the router bit, a base for supporting the adjustment ring, and a plurality of clip assemblies for selectably coupling the adjustment ring to the base assembly, and wherein the clip assemblies are simultaneously operable by the fingers of one hand of the person using the router.

Abstract: The invention relates to an electric power tool with a housing, in which a drive mechanism is received; the electric power tool includes a shaft, with a chuck (20) received in it, for receiving a tool insert (19). The chuck (20) is surrounded by an annular bearing face (9). The bearing face (8, 9) includes receiving elements that enable the guidance of the electric power tool on a guide rail (1, 35), such as receptacles (21, 22; 31, 32) and (33) for slip-on tools (25), such as templates, that can be received on the support (8, 9).

Abstract: A device 10 and method for forming a non-tapered end 12 of a gypsum board 14 into a tapered configuration 16 includes a rotary drive tool 18 that imparts rotary motion to a tool bit 20 removably secured thereto, a pair of oppositely disposed angle members 22 having cooperating base portions 24 configured to promote attaching a dust collection collar 17 to the base portions 24, the angle members 22 disposing and guiding the rotating tool bit 20 between outer paper walls 28 of a non-tapered end 12 of the gypsum board 14 to ultimately severe portions of gypsum from the non-tapered end 12 thereby forming a recess 32 without damaging the paper walls 28, the tool bit 20 removing the severed portions of gypsum from the recess 32 via a spiral channel 34 circumferentially disposed about the tool bit 20, and a vacuum system 36 that removes the severed portions of gypsum from the gypsum board 14 when the tool bit 20 “lifts” the severed portions form the recess 32 whereby the non-tapered end 12 is forcibly be

Abstract: In a guide device for cutting a groove of this invention, a rectilinear guide member comprises a pair of guide members where the opening width between the guide members for an initial cut is set to be the same as the diameter of a router bit by inserting a pair of inserts between the guide members. A dado having a width that is the same as the thickness of a shelf board to be used is then formed by operating the router with a scrap piece of that board inserted between the guide members. A variety of inserts having various widths corresponding to popular router bit diameters may also be used.

Abstract: A hand tool apparatus uses a cutting tool with a first width and a tool axis to machine a hole in an object. The hole has a second width at least as large as the first width of the cutting tool. The tool axis passes through a predetermined point on a surface of the object. The apparatus includes an actuating assembly including a housing. The housing contains an axial feed mechanism configured for moving the cutting tool in an axial direction, a spindle motor configured for rotating the cutting tool about the tool axis, and a radial offset mechanism. The radial offset mechanism is configured for moving the cutting tool such that the tool axis is offset from a principal axis. A motor is configured for rotating the axial feed mechanism and the cutting tool about the principal axis.

Abstract: A combined rotary hand tool and accessory attachment includes a rotary hand tool having an output shaft and a nose end associated with the shaft. An accessory attachment has a mounting portion configured for releasable attachment to the nose end and an engagement formation provided to the nose end and the mounting portion and configured so that the mounting portion is securable upon the nose end upon an approximate ¼ relative rotation.

Abstract: The aircraft panel detab router to trim tabs from airframe parts such as wing elements, panels and airframe skin structures includes a tool fixture having a clamping mechanism for securing to a panel edge. The tool fixture includes a linear slide to which a sliding assembly is slidably engaged. The sliding assembly includes an eccentric cam ring mount for retaining and position adjustment of a router relative to the panel edge. The router has a cutting tool attached which cutting tool at its distal end is also supported by a support arm attached to the sliding assembly. A vacuum manifold is also attached to the sliding assembly to remove debris created by the trimming action of the cutter tool.

Abstract: A method and apparatus for forming patterns in a flat, plastic material, such as, for example sheet vinyl, linoleum, and other flat sheet floor covering. The apparatus comprises a router die and trimmer base affixed to a router machine. The router die is comprised of two guiding members, a first guiding member that directs the router blade between an edge of a pattern and an edge of an overlay. A second guiding member follows the blade after the groove is cut.

Abstract: First and second guide plates are engaged for linear sliding between them by a channel and rib engagement system. A grooving tool is carried by the plate associated with the rib, and the rib is in axial alignment with the tool head, such that the tool head can lead the rib. When a groove is being cut into a workpiece, the rib can follow the tool head into the cut groove to extend the range of the guide. Ribs of different size can be selected to coordinate with the tool and groove width. Filler strips similarly coordinate the channel width. An alternate or supplemental guide system joins the first plate to a series of accordion style hinged and foldable plates. These plates guide the first plate in linear movement as they fold or unfold.

Abstract: An apparatus and method for in-situ milling includes a support and a pair of spaced apart rails attached to the support. The support and rails are mounted between a pair of opposed mill housing wear plate surfaces. A milling assembly is reversibly mounted on the rails in either of a first orientation and a second orientation. In the first orientation, the milling assembly mills one of the wear plate surfaces. The milling assembly is reverse mounted on the rails to the second orientation for milling the other of the wear plate surfaces. This permits the support and the rails to remain in one position between the wear plate surfaces requiring only the milling assembly to be moved to accomplish milling of each of the wear plate surfaces.

Abstract: A planing device for removing weld beads on car sheet metal, which comprises a handle, a cylinder cover and a support frame; the front end of the support frame is mounted with a round milling cutter; the inner side of the round milling cutter is furnished with a guide frame for adjusting the height between the bottom surface of the guide frame and the surface a sheet metal; when the round milling cutter is rotated at a high speed, the weld beads on a car sheet metal will be planed off.

Abstract: An apparatus for easily removing portions of aircraft skin damaged by pressure cycles and corrosion includes a router and a guide for the router. The guide is precisely formed for a uniform height or thickness. Using this thickness, a router with a precise vertical adjustment rides on a platform above the aircraft, guided by the guide, and quickly and easily makes long horizontal cuts to remove layers of aircraft skin that contain cracks or corrosion. The apparatus may also be used for removing and replacing sheet metal used in other applications.

Abstract: A piping structure of the present invention comprises an existing pipe and a seal-up housing. The existing pipe has a collection opening formed in the bottom thereof. The seal-up housing comprises two or more housing parts which are segmented circumferentially of the existing pipe. The seal-up housing encloses a part including the collection opening of the existing pipe. One of the housing parts is formed with a collection space and a drain port. The collection space serves to collect dirt or foreign substances through the collection opening. The drain port is provided for discharging the dirt or foreign substances stored in the collection space.

Abstract: A portable machine tool for removing stub ends of heat exchange tubes from a heat exchanger header or other plate structure and preparing the tube opening in the header for butt-welding a new tube at the opening. The tool includes a mandrel that may be locked within the tube opening and a plurality of stabilizing legs extending between the mandrel and the header for stabilizing the mandrel during machine tool operation. A cutting head is mounted concentrically on the mandrel and is advanced into engagement with the stub end of a heat exchange tube and it's respective opening to remove the stub end and prepare the opening for welding the new tube thereon.

Abstract: A router guide is disclosed which is used to cut grooves of varying widths with a router bit of fixed size. The router guide comprises a base plate, having a guide edge, a depression, and a first hole; and a rotating plate, set into the depression in the base plate, that rotates along a central axis of the first hole, having a second hole located substantially over the first hole, but having a center offset by a distance, wherein the first hole is always larger than the second hole.

Abstract: Equipment for making a hole or cavity formation in a curved or planar wall element, and for cutting out a disc-shaped piece of material fitting the hole or cavity formation, includes a frame with devices for fixing it on the wall element, and a carriage displaceably mounted in a first linear direction. A slide is mounted to be displaceable in a direction perpendicular to the first linear direction and carries a tool unit. The carriage has wheel sets which are biased against the wall element. The wheel sets are pivotable and displaceably mounted on a respective guide slide, which is mounted to be displaceable in the first linear direction.

Abstract: A drilling template for carving into the lateral edge or the jamb of a door, a slot shaped and dimensioned to receive either a lock and its mounting plate or its strikeplate has a series of drill bit bores at regular spaced-apart intervals along a central line, a pair of lateral legs, and mounting holes corresponding to those of the lock or strikeplate. A drill is used to rout the lock blade slot through the drill bit bores. Guides in either side of the bores prevent lateral movement of the bit, but allow slight longitudinal swing to remove material that may remain between holes. The height of the guides may be varied along the length of the template to guide the routing for a slot of more uniform depth. Lateral spacers are provided to align the template against the angled part of the door jamb. A specialized routing drill bit is provided for drilling the strikeplate or lock channel. The bit has central pilot shaft for tracking within the lock blade slot and a removable circular toothed disk.

Abstract: The present invention concerns an apparatus for allowing the operator of a plunge router to make accurate mortising or doweling cuts in a workpiece and more particularly to allow dowel holes or mortises to be executed in pieces of wood which are to be secured together. The apparatus comprises a base plate having adjustable lateral guides flanking an opening in the base for allowing the passage of a router bit. Removably securable to the base plate is a reversible member or gate including adjustable end guides such that removal and reversal of the gate member permits the user to perform an identical mirror image operation on the second of two workpieces to be matched.

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: An apparatus for the field milling of a pocket into a railroad stock rail to accommodate the precise nesting abutment of a switch point rail thereto avoids the necessity of milling such pockets under shop conditions and permits the use of Continuous Welded Rail (CWR) through railroad switches. The portable, self-propelled apparatus is adapted to the field milling of pockets into stock rails to accept the selectable placement of a movable switch rail therein and is powered by a portable power supply that may be either auxiliary or integral. The apparatus comprises components which are preferably fluid-powered. The apparatus clamps onto the stock rail and comprises a positionable milling assembly inclined at the angle necessary for milling the desired pocket into the stock rail. The apparatus moves the apparatus along the stock rail at a controlled speed whereby the milling head is fed along the stock rail during the milling operation.

Abstract: The invention relates to machining equipment for machining the sealing surface (13) of the door frame (10) of a coke oven. The machining equipment comprises:a frame (19) to which the machining device (23) is movably attached;in the machining device means (27, 28) for moving at least one machining unit (1 and/or 2) relative to the frame in at least two directions (D1, D2), and in the machining unit a machine tool (3) including acutators (14); andmeans (20) for attaching the door frame and the machining device to each other while the door frame is being machined.

Abstract: An apparatus and method for making an elongated hole in a pipe which includes drilling a rotating conical tool through the pipe wall by pushing the conical tool in the direction of its rotating axis to a desired depth, then simultaneously lifting and tilting the conical bit so as to mill one end of an elongated hole. The rotatable conical tool may be lifted and tilted in the opposite direction to further mill the pipe and elongate the hole. Tilting is effected relative to a pivot point located above the top pipe surface and in a plane extending through a center axis of the pipe, and the angle of inclination can be adjusted for determining the length of the finished hole.

Abstract: A cutting assembly and an apparatus for self-aligned chamfering of a workpiece are disclosed. The chamfering apparatus includes a mechanism for releasably securing the workpiece in preparation for a chamfering thereof, a cutting assembly, and a mechanism for moving the cutting assembly proximate the securing mechanism between a first position and a second position, wherein the cutting assembly traverses along an edge portion of the workpiece to be chamfered.

Abstract: A convertible woodworking jig comprising multiple components suited to making specialty woodcuts necessary for the manufacture of rails and stiles of cabinet door frames from standard milled wood stock. The jig has a base having a planar work surface, a first fence having a first straight edge, and a second fence with a second straight edge, between which edges a first cam assembly is medially positioned. The cam body is rotatably positionable for wedging a freely-positionable pressure block tight against a work piece, which is selectively positioned against one of either the first straight edge or the second straight edge. The work piece being so secured, a biscuit slot may be cut into the mitered end by use of a guide assembly disposed at an operative end of the second fence, which assembly closely guides a hand-held, power cutting tool at a predetermined angle formed relative to the plane of said second straight edge.

Abstract: The present invention concerns an apparatus for allowing the operator of a plunge router to make accurate mortising or doweling cuts in a workpiece and more particularly to allow dowel holes or mortises to be executed in pieces of wood which are to be secured together. The apparatus comprises a base plate having adjustable lateral guides flanking an opening in the base for allowing the passage of a router bit. Removably securable to the base plate is a reversible member or gate including adjustable end guides such that removal and reversal of the gate member permits the user to perform an identical mirror image operation on the second of two workpieces to be matched.

Abstract: A portable, rotary power tool includes a guide roller and a special designed cutter mounted to the spindle of the tool. The rotary tool is presented to a lens blank mounted to a lens defining pattern. The guide roller engages and follows the shape defining lens pattern while the special designed cutter contacts and removes material from the lens blank being contoured. The cutter may be square and include a further shape defining cutting surface thereon for providing a bevel to the lens edge. In a further embodiment, a rotary power tool similar to the above device, including the guide roller and cutter, is mounted to a support fixture. The fixture includes a pivoting arm assembly to which a lens blank and lens defining pattern are mounted. The pivot arm assembly is rotatable toward and away from the cutter carried by the rotary tool such that the cutter engages and removes material from the lens blank dependant upon the shape defined by the lens pattern.

Abstract: A support for a number of portable machine tools, such as planers, has a planer mounting member with an aperture to provide access to the workpiece for the tool bit of each tool. The tools are releasably secured to the mounting member and can be retained in alignment on the mounting member to perform multiple operations in a single pass.

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 method of creating a decorative inlaid floor includes the first step of providing a cutting implement, such as a router, which is operable to machine an inlay recess in a finished wood floor. The next step is to position the router over a section of the floor and move the router in a particular manner so that the desired inlay recesses are machined. The operating and movement step requires that the decorative pattern be predetermined and a control program or NC tape be generated so as to control the drive motors which are associated with each of four slide assemblies. Once the desired inlay recesses are machined into the main floor, the control program is modified by scaling it up to a larger size and is then utilized on a panel of a contrasting material. A typical example would be to select a contrasting wood for the inlay elements. The reprogrammed router is then located over the second material panel and operated so as to machine a larger inlay recess in that second material panel.

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: The present invention relates to a machine for forming grooves of uniform configuration in a face surface of a one-piece frame such that the adjacent grooves meet at inside corners to define miter lines. This machine comprises a support means adapted to securely support a side of the frame under a predetermined angle with relation to the horizontal plane, a cutter assembly having a cutter means, a first guiding means adapted to guide the cutter means along the respective miter line in order to cut the inside corner and the miter line, and a second guiding means adapted to guide the cutter means along the side of the frame to cut a side groove portion extending between the opposite miter lines on the side of the panel. The frame is extended from the support means outwardly upwardly, and the first guiding means further comprises a stop means adapted to restrict the movement of the cutter means beyond the area designated for formation of the respective inside corner defined by the corresponding miter lines.

Abstract: A prosthetic device for the human hip having elongated fins or other like protrusions which are provided on the underside of a collar and which extend into previously formed slots or grooves in the bone. Either a plurality of fins, or a single fin having a non-rectilinear shape is provided. Apparatus for formation of the grooves in the bone includes a mill guide which can be mounted onto the proximal end of a rasp embedded in a cavity formed in the bone. A milling bit is used in conjunction with the mill guide to form precisely located and shaped grooves into which the fins can seat. A clamp is provided for securing the prosthetic device to the femur while the cement is hardening.

Abstract: A vacuum template has a suction chamber on its back surface that adheres the template to the wall or other flat surface when a source of vacuum pressure attached to the template is turned on and the template has been placed by the worker in its desired position. Dust inlets adjacent a guidance hole in the template immediately suction away dust particles as the hole is being cut by a power tool or hand saw manipulated by the user. Interchangeable modules on the template provide for variations in hole size and shape.

Abstract: A hexapod machine comprises a fixed structure (10,11) and a movable structure (14,15). Six extensible legs (18) are connected between the fixed and movable structures, and their lengths determine the relative position and orientation of the structures. The lengths of the legs are measured by respective laser interferometers (60,62). To increase the accuracy of the measurement, a retroreflector (62) of the interferometer is directly mounted to and fast with one of the structures (14,15).

Abstract: A unitary door routing template for routing hardware mounting apertures in doors is provided which affords expedient placement of the template and the cutting of hardware mounting holes while minimizing expense and hazards to operating personnel. The template comprises two elongated, planar, unobstructed, opposing sides for engaging the front and back sides of a door, the template sides being integrally formed with and extending generally perpendicular to an end plate which engages the door edge. The planar opposing sides are spaced from each other at the end plate by a distance equal to or slightly greater than the thickness of the door and, preferably, gradually converge away from the end plate so that, when placed over the door, they provide a stabilizing grip on the door surfaces.

Abstract: A portable milling apparatus is disclosed where said apparatus, in one embodiment, comprises a cutting head, a control mechanism and a power supply where said cutting head generally includes a frame, an axial displacement means, a rotary cylinder and alignment means.