Abstract: A re-keying process includes inserting a peg (65) into a plug (10) of a cylinder lock to be re-keyed. The peg (65) partially blocks a key slot (18) in the plug (10), thereby preventing the original key (30) to be inserted into the plug (10). A longitudinal groove (75) is then formed on the blade (74) of a key (70), thereby allowing the key (70) to be inserted into the partially blocked key slot (18). To insert the peg (65) into the plug (10), the plug (10) is placed in a bore (45) of a drill block (40). An alignment bolt (61) is used to positioning the plug (10) in the bore (45). A drill bit (62) is inserted into a drill guide hole (52) in the drill block (40) to drill a hole (63) in the plug (10). The peg (65) is then screwed into the hole (63).

Abstract: The present invention includes the apparatus and method to create an improved loose tenon joint with multiple arculate mortise surfaces and similarly configured loose tenon member for woodworking applications. A drilling jig is provided to axially guide a drill bit for boring a series of adjoining holes forming a mortise, and a router bit is provided to form a cooperating tenon. A first jig embodiment manipulates a slidable drilling guide bar maintaining longitudinally spaced thru-bores and a plurality of index holes. A second embodiment includes a stationary jig body having an opening that supports at least two drilling guides each having at least one thru-bore. A third embodiment provides a drilling guide bar slidably attached to a stationary support member by at least one indexing pin inserted through an elongated indexing aperture in the stationary support member and into an indexing hole in the guide bar. Preferably, the indexing pin and indexing hole are threaded.

Abstract: An automatic boring device is provided that comprises a tool housing having attached to it two opposing handles with switches mounted thereon for selective engagement of pneumatic controls that activate a clamping device, rotation of a chuck of a pneumatic drill, and downward movement of the drill. The pneumatic drill is removable and the depth of the downward boring stroke is adjustable.

Abstract: An adjustable drill jig for forming door hardware mounting holes is described. The drill jig of the present invention includes a first plate adapted for placement against a first side of the door. A second plate is attached to the first plate via a chain linkage. The second plate is adapted for placement against a second opposite side of the door in a position aligned with and parallel to the first plate. Alignment means connected to the first plate and capable of attachment to the second plate ensure the two plates are aligned. The first and second plates each define a plurality of drill guide holes. The drill guide holes of the second plate are aligned with correspondingly sized drill guide holes of the first plate when the first and second plates are aligned. A plurality of bushing plates are also provided. Each bushing plate is capable of attachment to the first plate. Each bushing plate carries a predetermined pattern of drill bushings corresponding to a particular type of door hardware.

Abstract: The invention relates to a drilling device having a base plate and a positioning plate. The positioning plate bears a tool guide bush and two tool guide mechanisms for producing a principal drilled hole for the main body of a hinge, and two screw holes for the hinge fastening screws.

Abstract: The lug nut taper trueing tool includes a first disk which is positioned on one side of an automobile racing wheel and a second disk which is positioned on an opposite side of the wheel. The first disk has an extension sized to fit and extend within the center wheel hole of the automobile wheel. The first disk has a center bore, and a plurality of holes which are alignable with lug nut holes of the wheel. A bushing is positioned and secured within the plurality of holes of the first disk and has a flange which fits and extends within the lug nut holes of the wheel. The bushing has a bore for insertion of a pin, which is attached to a cutting tool. The second disk is attached to a threaded shaft, which is engagable with the first disk for securing the first disk, second disk, and wheel together. The cutting tool has at least one cutting edges and may have either a handle for a person to manually rotate the cutting tool or a shaft end for attachment to an automatic rotation device.

Abstract: A tool fixture device for positioning tools to repair defects adjacent to the sealing grooves in a pressure vessel head. The device includes a two pair of parallel, spaced apart, arcuate segments adapted to fit into one of the sealing grooves. A support plate is attached to the first and the second pair of parallel, spaced apart, arcuate segments. The fixture includes a plurality of threaded rods for expanding the ends of the parallel arcuate segments to engage the inside walls of one of the grooves to hold the fixture in place. In the preferred embodiment, a tool positioner is adapted to be attached to the support plate for positioning a repair tool to permit the repair tool to be used to repair defects adjacent to the sealing grooves. The tool positioner includes a planar table and a tool jig attached to the planar table for receiving the repair tool.

Abstract: A dowel pin hole drilling guide for drilling dowel pin guide holes into work pieces, the dowel pin hole drilling guide having a stable piece, the stable piece having adjustable end stop bars rotatably mounted thereto and a movable piece pivotably attached to the stable piece, the movable piece having drill guide passages passing therethrough, the movable piece being adjustable relative to the stable piece and permitting the drilling of dowel pin guide holes in work pieces having compound angled surfaces, the dowel pin drill guide further having stop pin holes passing through the stable piece and stop pins having stop pin heads of various diameters and stop pin stems, the stop pin stems being sized for removable insertion into the stop pin holes and permitting lateral adjustment of the location of dowel pin guide holes to be drilled.

Abstract: A face frame dowel apparatus is disclosed that is accurate, simple to use and easily transported to remote locations. Two positioning blocks are secured parallel to each other and sandwiched about a smaller spacer block in such a manner so as to form a U-shaped channel for receiving work pieces to be dowelled. The spacer block contains one or more sets of dies to guide the drill bit during drilling of pilot holes for dowels. The apparatus is secured to the work piece by pressure asserted by a securing means such as a platen-like device perpendicular to and transversing one of the positioning blocks. Another embodiment of the invention includes a reciprocated guide useful in drilling shelf holes. The guide is attached to the positioning block opposite that containing the securing means, and reciprocated by means of allen screws.

Abstract: A drilling template for carving into the lateral edge or the jamb of a door, a cavity shaped and dimensioned to receive either a flanged lock or its strikeplate has a series of drill bit bores at regular spaced-apart intervals along a central line, a pair of lateral legs with sharp ends, and mounting holes corresponding to those of the lock or strikeplate. The template is designed to be hammered into the door edge or jamb until the sharp edge-ended edges define the outline of the lock flange or of the strikeplate as well as the amount of wood to be removed to form the mortise necessary to nest those elements. The template can be screwed in place through mounting holes that correspond to those of the lock or strikeplate. A drill is used to rout the cavity 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.

Abstract: A circular hole cutting apparatus comprising a support frame, having a forward end, a rearward end, a lower end, and an upper end; the forward end forming a cutting bit mounting means, capable of rotatably retaining a cutting bit so that the upper end of the cutting bit may upwardly extend from the upper end of the support frame, and so that the lower end of such a cutting bit may downwardly extend from the lower end of the support frame; and the lower end of the support frame forming a radius arm mounting means, the radius arm mounting means being capable of adjustably retaining a radius arm, so that the rearward end of the radius arm may alternately extend rearwardly from the rearward end of the support frame and retract forwardly from positions rearward of the rearward end of the support frame.

Abstract: A drill guide is disclosed including a sleeve mounted on a handle. The sleeve of the drill guide has a bore which is dimensioned for slidably receiving a bit sizing ferrule therein. The bit sizing ferrule has a sized bore for demountably inserting a drill bit or other instrument therein having a particular width.

Abstract: A drill jig assembly for drilling holes in an extruded aluminum shape; including a metal channel base, a plastic plate having upright hole patterns and a plurality of position pins located in the holes for positioning the shape widthwise for drilling, and an extension arm for positioning a stop pin against which the shape can be positioned lengthwise for drilling. This jig is used principally for drilling assembly holes in an aluminum window vertical frame piece to correspond to a pair of spaced sprues in the horizontal frame piece and different positioning pins are required for different shapes and different hole patterns in the plate likewise are required to accommodate for different shapes.

Abstract: A template for locating of attaching points for drawer pulls. The template is designed to lie on the upper edge of the drawer front and to be adjustable laterally. The members for the drawer pull are also vertically adjustable and provide proper spacing.

Abstract: The present invention is an improved loose tenon joint with multiple arculate mortise surfaces and similarly configured loose tenon member for woodworking applications. A jig is provided arranged to be secured to a workpiece where the jig axially guides a drill bit for boring a series of adjoining holes forming a mortise. The first jig embodiment manipulates a slidable guide bar maintaining longitudinally spaced drill guide holes and two index holes. A hand held drill is used to bore a series of holes (fixtured by the drill guide holes) into the workpiece. A second series of holes are bored (completing the mortise) after the drill guide is translated and secured to the second index hole. A second embodiment is provided including a stationary jig body arranged to be secured to a workpiece. An elongated opening in the jig body supports a drill guide with longitudinally spaced drill guide holes. A hand held drill is used to bore a series of holes (fixtured by the drill guide holes) into the workpiece.

Abstract: An adjustable drill jig for precisely locating and drilling one or more holes in a workpiece such as a kitchen cabinet component (side panel, door, drawer, etc.) or the like. The adjustable drill jig is versatile in its applications and is composed of components that can be readily assembled (or disassembled) to form various modifications of the drill jig for different applications. The adjustable drill jig is composed of at least one elongated element with at least one rule on a surface thereof, at least one adjustable drill guide which has a drill bushing therein and is slidably movable along the length of the elongated element, and a stop plate attached to an element which is slidably movable along the at least one elongated element.

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 door drilling fixture for drilling a long straight longitudinal hole in a door. The fixture includes an elongated frame having a U-shaped cross-section for mounting about the hinged edge of a door and an arm projecting from and pivotally engaged to the frame for guiding a long drill bit. The door is placed between the right and left sections and the door edge flat against the center section of the U-shaped frame. Two hold-down bolts thread through upper and lower portions of the left section of the U-shaped frame to press the door against the right section of the U-shaped frame. Slots in the frame mechanically isolate the upper and lower portions of the left section from the middle portion of the center section. The arm houses two spaced apart drill bushings having a center line for rotationally engaging and guiding the drill bit through the drill bit aperture and into the edge of a door.

Abstract: A holding fixture for use in drilling pocket joints in a workpiece with a drill bit which includes a work table having a transverse rail and a transverse slot near the front side, a toggle clamp fixed to the work table to hold down the workpiece, a fixed guide member fixedly secured to the work table between the transverse rail and the transverse slot near one end, and a movable guide member supported on the work table and moved along the transverse rail and the horizontal sliding rod and horizontal locating sliding bar of the fixed guide member, each of the guide members having a top head, a bottom base supported on the work table, an oblique through hole through the top head, a back open space at the back side between the top head and the bottom base in communication with the oblique through hole for receiving wood chips from the workpiece during drilling, a guide sleeve fixedly mounted in the oblique through hole for guiding the drill bit, and a smoothly curved notch on the bottom base for supporting and g

Abstract: A tool for aligning a portable boring bar for reboring of a bore at a location relative to a further bore including at least first and second "H"-shaped rigid guide members that are hingedly connected to permit their outboard ends to be selectively spaced apart. Each guide member includes first and second side members adapted to be disposed on opposite surfaces of an equipment component which is to be rebored, each side member for the first guide member having an outboard end designed to be aligned with a first bore, and each of the side members of the second guide member being designed to be aligned with a further bore spaced apart from the first bore. The tool serves as an alignment tool and/or as a mount for the drive unit of a portable boring bar.

Abstract: A centering jig assembly for centering guide holes for a drill provides an improved adjustment feature, which avoids reliance on fasteners to fix the position of the screw device with respect to the clamp jaws. The jig assembly includes a first holding element having a first threaded bore extending therethrough and a first bearing face bearing against a first engagement surface of a work piece and a second holding plate member having a second bearing surface and a second bore extending therethrough for alignment with the first bore, the second bearing surface bearing against a second engagement surface of the work piece. A center axis of the first bore and a center axis of the second bore are collinear defining an axis of travel. The first and second plates are adapted to translate generally parallel with respect to each other along the axis of travel.

Abstract: The present invention is a jig which allows drilling sites to be located on a workpiece by the user simply locating the lengthwise points along the edge of the workpiece. The jig then marks the offset distance of the drilling site away from the longitudinal axis of the workpiece without the user having to make a secondary measurement to locate the point. The drilling site may be marked by a punch or a scribe at this point or the hole may actually be drilled using a drill bit. The jig contains an appropriate guide for assuring that the mark or the hole is centered at the precise location. The drill jig additionally allows holes to be drilled at angles in a face or along the edge of the workpiece using a vee block accessory. This vee block accessory allows holes to be located along the length of a workpiece lacking a planar face, such as a dowel. The vee in the block cradles the workpiece along its length so that a consistent longitudinal axis is defined.

Abstract: The invention provides a unique approach to solving a peck feeding problem in limited access areas restricting the drilling unit size. It uses a power transmission system which is comprised of a pinion gear driven by a motor source. The pinion gear drives a bevel gear that is free to travel along a polygon quill. A quill had is located on one end of the quill to house the drill. The opposing quill end is attached to a guide bushing assembly. The guide bushing assembly is connected to a bell crank mechanism that is actuated and controlled by a pneumatic piston and hydraulic speed control system. The power transmission system, and the pneumatic power transfer system combined produce a pecking cycle for drilling precision holes within a confined set-up space of 5.5 inches in a preferred embodiment. It preferably has a drill stroke up to 1 inch deep, and is capable of producing a "pecking" action which is unique for right angle drilling equipment in limited access applications.

Abstract: An adjustable drill hole jig which allows a carpenter easy and quick customization of the drill hole jig to conform to the particular hole positioning required of the drilling job at hand, in particular the drilling of threaded fastener holes into cabinet doors for the purpose of attaching handles thereto. The drill hole jig according to the present invention is composed, generally, of: a base having an L-shaped guide edge, a first guide abutment for restingly engaging a workpiece surface, and a first guide opening; a primary armature having a second guide opening wherein the primary armature is guidably slidable along a first axis in the first guide opening; and a secondary armature guidably slidable along a second axis, which is perpendicular to the first axis, in the second guide opening. The secondary armature is provided with a plurality linearly arranged guide holes for guiding drilling of holes in a workpiece.

Abstract: A drill guide apparatus for lens workpieces, having a substantially C-shaped base and threaded screw member, is provided. The drill guide apparatus includes a threaded aperture through the C-shaped base member for receiving the threaded screw member to clamp the drill guide apparatus to a lens workpiece. The screw member includes an axial bore through its entire length. An exit aperture is provided on an opposing side of the C-shaped base member for aligning the drill guide apparatus on a pre-marked spot on the lens workpiece. With the drill guide apparatus clamped in place, accurate drilling can be achieved without damaging the workpiece.

Abstract: A magnetic positioning system is provided for assisting in positioning a fastening element at a desired concealed internal location such as in a preformed opening in an interlocking nail in a long bone of a limb of a patient who has suffered a bone fracture. The arrangement includes: a first permanent ("target") magnet positioned at the internal location and a positioning device for a second permanent ("targeting") magnet. The positioning device comprises a hand-held drill and a magnetic aiming device mounted on the drill. The aiming device including a pivot member including the second magnet is disposed at one end thereof and having an axial bore. A mount for the pivot member permits three degrees of movement of the pivot member so as to enable the second magnet to align with the first magnet. The positioning device also includes a guide pin which is insertable into the axial bore and which is engaged by the drill chuck of the drill when the magnets are aligned.

Abstract: A fixture including a clamp having a pair of opposing clamp members, one clamp member being releasably secured to a guide. In the preferred embodiment, one of the clamp members includes a circular disc that matingly engages a pocket formed in the guide. The clamp is releasably secured to the guide by a movable retainer that extends to engage and retain the circular disc when it is received in the pocket. When the retainer is moved out of engagement with the circular disc, the clamp may be removed from the pocket and used in other applications requiring a clamp.

Abstract: A carpenter's locator for use with a door boring jig, each of which have a straight side that can fit together, the locator thereby locating the boring jig the proper distance from the doorknob hole for boring a security lock or deadbolt lock hole is disclosed.

Abstract: Apparatus for facilitating drilling or similar machining operations upon a workpiece, the apparatus including a vertically directed vee shaped recess (15) for interchangeably receiving and centring tool guide arrangements (18) for the tools required to be used for machining the workpiece; and means (19) for cramping a selected tool guide arrangement (18) against the mutually inclined faces of the vee shaped recess (15); and with a vee shaped recess (14) whose apex (17) is directed transversely of the apex (16) of the vee shaped recess (15) and intersects the apex (16) of the vee shaped recess; a workpiece support means (26) mounted for displacement towards and away from the vee shaped recess (14) in such manner that a workpiece (27) placed upon the workpiece support means (26) can be brought into firm contact with the faces of the vee shaped recess (14), and means for positionally locating a workpiece upon the workpiece support means (26).

Abstract: An extension arm 23 for a multiple hole drilling device 1, the drilling device 1 comprising a frame 17 having a first surface 19 for abutting a workpiece and drive means 3,9,11 for plunging a row of rotating drill bits 7,13 through the first surface 19 into the workpiece, the extension arm 23 comprising a body 25, adapted for attachment to the frame 17 of the drilling device 1, defining a slit 27 colinear with the row of drill bits 7,13, and a protrusion 33,31,35 accommodated within the slit 27 for engaging a drill hole formed in a workpiece, wherein the protrusion 33,31,35 is lockable to the body 25 of the extension arm 23 such that additional drill holes can be formed in the workpiece at repeatable distances along the workpiece. By enabling controlled positioning of groups of drill holes to be achieved, dowel joints requiring corresponding drill holes in two workpieces can be simply, easily and accurately produced.

Abstract: A joint jig and template assembly has a base, first and second clamp assemblies attached to the base, each of the first and second clamp assemblies having a clamp member which is capable of moving relative to the base to engage a board placed adjacent the base, a support structure engagable with the base and a template supportable by the support structure. The template has at least one undulating surface to guide a router bit during operation of a router upon the board, and a plurality of bores arranged to guide a bit during operation of a drill upon the board. Movement of the router and drill are limited by the template during operation on the board to cut a particular design in one of the end surfaces of the board to enable the board to mate with another board to form an angled joint.

Abstract: A drill jig for locating holes to be drilled in a workpiece includes an elongated guiding block, a guiding rod and a positioning block. A plurality of through-bores are formed in the guiding block and are longitudinally aligned. A bushing and a positioning pin extend removably through two of the through-bores. Each of the threaded holes is provided with a locking screw so that the bushing and the positioning pin can be releasably locked in the two through-bores by the corresponding locking screws. The guiding rod is connected to a side face of the guiding block and extends in a direction that is transverse to the longitudinal direction of the guiding block. The positioning block has an abutting plate depending from the bottom face of the positioning block, a threaded bore formed in the top face of the positioning block, and a through hole through which the guiding rod slidably passes. The through hole communicates with the threaded bore in a direction that is transverse to the axis of the threaded bore.

Abstract: The dowel-hole boring device drills dowel receiving holes at a predetermined angle and depth. The device has a body with a first and second end. A first interior channel opens to the first end and a second interior channel, contiguous to the first channel, opening to the second end. The first interior channel has a diameter less than the second interior channel, the reduction in diameter forming a step. A pair of bearings have an interior diameter slightly greater than the shaft and an exterior diameter slightly less that than of the first interior channel. The shaft is configured to prevent rotation within the bearings. The shaft has a drill bit at one end and a recess at the other. The body of the shaft has a receiving groove to receive a securing ring. A spring, over the shaft, maintains the separation between the bearings at a predetermined distance. Locking channels and locking screws come in contact with the bearings locking them in place. The shaft is axially movable within the bearings.

Abstract: A kit for reaming the governor bores of used motor vehicle transmissions includes several cutting tools having cutting heads of different diameter. The diameters of the cutting heads are matched to the differing diameters of the governor bores of different transmissions. Each of the cutting heads is generally flat and has two pairs of flat parallel edge faces. The edge faces of the two pairs are normal to but do not intersect one another. Cutting tips project outward from the zones between neighboring edge faces. The kit further includes a guide for the cutting tools, and the guide has a centering element as well as several pairs of holes. The holes of different pairs have differing relative positions which correspond to the differing relative positions of threaded holes in the different transmissions. This allows the guide to be connected to any of the transmissions. The kit also includes several adapters each of which is provided with first and second centering elements.

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 template used in installing door locks. A side bracket is slidably received by a front bracket and the two brackets are aligned for the door width or thickness of the door to be drilled. The template permits properly related pilot holes to be drilled into the door edge using the side bracket and the door face using the front bracket.

Abstract: A plate-like guide for precisely positioning a plunge router for the purpose of boring a series of holes in a work piece. The plunge router is provided with a guide bushing having an outside diameter, centrally positioned in the router working face, through which the router cutter can be pushed (plunged). The boring guide is provided with a series of spaced pilot holes positioned on a center line. The inside diameters of the pilot holes are a close sliding fit with the outside diameter of the router guide bushing. The boring guide has five positioning means usable in pairs to precisely position the boring guide with respect to the workpiece. There are two groups of fence holes into which fence pins are screwed to provide a step variable fence for positioning the pilot holes with respect to the working edge of the work piece. There is a centering notch for aligning the boring guide with a centerline drawn on the workpiece.

Abstract: A tool for removing broken threaded fasteners such as seized or damaged Budd nuts mounted on a stud extending from the hub of a dual wheel assembly. The tool includes a base plate which is securable at the Budd nuts adjacent the broken nut by stand-off and fasteners. A cutter is advanceable by a pivotal bar by means of a manually operable adjustment knob. The cutter is rotatable in a busing and has a cutting head with a bore which extends over the damaged nut. Replaceable cutting teeth are carried on the cutting head and when advanced cut through the flange on the damaged Budd nut. The device can be powered by a power tool attachable to the device. A depth guide is provided to assist the mechanic in correctly determining the proper depth of cut. As the cutting head is advanced, the flange portion of the Budd nut is cut away so the inner wheel rim can be removed from the hub and thereafter the remaining shaved Budd nut can be easily removed.

Abstract: A magnetic positioning system is provided for assisting in positioning a fastening element at a desired concealed internal location such as in a preformed opening in an interlocking nail in a long bone of a limb of a patient who has suffered a bone fracture. The arrangement includes: a first permanent ("target") magnet positioned at the internal location and a positioning device for a second permanent ("targeting") magnet. The positioning device comprises a hand-held drill and a magnetic aiming device mounted on the drill. The aiming device including a pivot member including the second magnet is disposed at one end thereof and having an axial bore. A mount for the pivot member permits three degrees of movement of the pivot member so as to enable the second magnet to align with the first magnet. The positioning device also includes a guide pin which is insertable into the axial bore and which is engaged by the drill chuck of the drill when the magnets are aligned.

Abstract: An installation method for security switches located in door jambs and connection into security system wiring is provided together with a mounting fixture for simplifying the installation. To avoid wall damage, with cylindrically packaged security switches inserted snugly in a hole drilled part way through a door jamb a few inches from the floor, an installation fixture holding a drill at an angle is inserted into the switch mounting hole for drilling at a desired angle a system wire passageway hole into the switch mounting hole wall to extending downwardly through the floor. Another drill held in the fixture at a different angle permits routing of the mounting hole wall form a wire transit channel axially adjacent to an inserted switch for passing the system wires back to connect with the security switch.

Abstract: The present invention is a device for locating fastener positions and is more particularly concerned with the aspect of precise location for removal of material by boring or drilling by means of a hand held electric drill motor or drill press.

Abstract: A patella planer for preparing a resected surface on a patella in a single operation. The patella planer has an adjustable stop which can be used on either side of the planer so that the planer may be used on the right or left knee. The adjustable stop has a floating zero pointer which can be set to accommodate varying thickness of the patient's patella. The amount of patella material to be removed can be selected by adjusting an offset stop pin.

Abstract: A method of installing a combination lock deadbolt assembly includes the steps of providing a combination lock deadbolt assembly for mounting on a door surface in combination with a drill resistant hard plate. The hard plate, mounted on the outer door surface, includes legs extending through the door for attachment to the deadbolt assembly. A drill guide is provided having a tapered outer surface which corresponds to tapered openings in the combination lock deadbolt assembly. In use, the tapered drill guide is inserted into the openings in the deadbolt followed by insertion of a drill bit which drills holes through the door. After drilling each hole, the larger holes are drilled to facilitate attachment leg insertion into the door. The deadbolt can then be mounted to the door surface and to the drill resistant hard plate. A combination dial lock can then be mounted in the deadbolt assembly.

Abstract: A drill bit guiding device includes an end block, a mounting block, a pair of parallel guide rods between the end block and the mounting block, a slide member and a pushing screw. The end block has a flat end face and a plurality of through-holes formed perpendicularly through the flat end face. The slide member is mounted between the end block and the mounting block and integrally has a first portion passed perpendicularly through by the guide rods, and a second portion disposed parallel to the guide rods. The slide member further has a plurality of through-holes formed through the second portion, each corresponding to a respective one of the through-holes of the end block, and an axis transverse to an axis of the corresponding one of the through-holes in the end block. The pushing screw passes threadedly and perpendicularly through the mounting block and has a first end portion provided with an abutting member which moves towards or away from the slide member upon rotation of the pushing screw.

Abstract: A magnetically attachable, portable, adjustable, and collapsible safe drill mounting device to be used to align and hold a power drill in precise position against a steel safe in a predetermined manner so that the safe can be drilled open. The device can be attached to any size safe rapidly, easily and is totally portable and collapsible. Magnetic mountings which provide a minimum of 1800 pounds of attachment force allow the device to be attached to the largest safes. Each magnetic attachment block is adapted with a cam or jack screw release for detachment from the safe.

Abstract: A surgical jig for orienting a femoral component of a prosthetic knee prosthesis angularly with respect to the axis of the patient's femur which jig utilizes a single drill plate or guide for condylar pins, but permits variation in the placement of those pins. The jig comprises a distal plate which is placed against the distal end of the femur. The distal plate has two condyle fingers for grasping the posterior side of the femoral condyles. Gage means are provided to measure the size of the distal end of the femur. A rotatable drill guide permits the surgeon to adjust the placement of two drill bores for receiving condyle pins on a femoral component of a knee prosthesis.

Abstract: A drill guiding device is used to guide axial movement of a drill when forming a hole in a workpiece and includes a clamping assembly and a guide block. The clamping assembly includes a stationary clamping block, a pair of guide shafts which extend horizontally from the stationary clamping block and which have first end portions mounted removably on the stationary clamping block, a threaded shaft parallel to the guide shafts and provided with a head portion which is mounted rotatably to the stationary clamping block and a threaded shank portion which extends axially from the head portion, a movable clamping block mounted slidably on second end portions of the guide shafts and provided with a threaded hole to engage threadedly the threaded shank portion of the threaded shaft, and a mounting block mounted slidably on the guide shafts and disposed between and parallel to the stationary and movable clamping blocks.

Abstract: The invention is directed to a jig for boring doweling holes into alignment with one another in two boards or the like to be connected with one another by dowels or pegs and adhesives or bonding, comprising a plate which can be placed upon the board to be drilled, said plate comprising at least one guide hole for a drill and an adjustable and removable stop. In order to achieve elimination of the hitherto required insertion and removal of the dowels or pegs into or from the dowel holes of a board for positional determination of the bores in the second board, a displaceable or adjustable centering pin 14 probing the dowel hole 16 of the already drilled board 1 in an aligned manner is allocated to the guide hole 9.

Abstract: A doweling jig for mounting workpieces together by one or more of the three major doweling operations: 1. edge-to-edge, 2. edge-to-end, and 3. edge-to-surface. The doweling jig is a clamp type, which is comprised of two clamping jaw and drill guide assemblies. Each clamping assembly consists of a clamping face, an end face, and drill guides. The upper assembly has alignment slots, which increase the jig's capability to items 2. and 3. as referenced above. The said drill guide centers are fixed with respect to the clamping face and the end face, whereby both faces are utilized as a reference/gauging surface for positioning of said drill guides. Both clamping assemblies are movable and guided by rods with respect to each other via a thrust screw assembly.

Abstract: A drill guide for combination lock mounting and method for fabricating and sing the drill guide is provided. The drill guide is fabricated using several interior mounting plates bonded together to form a sufficient thickness to maintain a true level bore hole. The fabrication guide plate is attached to a secure door using a threaded clamping device extending through a lock spindle hole. Thereafter, the smaller interior holes are drilled completely through the door. Larger exterior holes are then drilled partway through the door from the outside. The door is then ready to accept an exterior combination lock plate having female studs extending into the door.