Abstract: A kit for repairing a worn out of round aperture. The kit includes a template which is later utilized as a part of the repair. In a first embodiment, the template is precisely located by means of utilizing the bottom of the aperture which does not become out of round as does the upper portion thereof and is fixedly attached to the structure containing the out of round aperture. A sacrificial pin is inserted in the out of round aperture, centered therein by means of the bottom non-out of round portion and adhered thereto. A drill is then passed through the boring guide enlarging the out of round aperture to a true round bore and the sacrificial pin is drilled out at the same time. The boring guide is then removed and an enlarged precision pin is inserted into the re-bored aperture. The new pin is fixedly secured in the new aperture by any convenient means such as peening between the pin outer surface and the adjacent structure.

Abstract: A drill and forming tool centering jig. The tool is useful centering a drill, bit body, or forming tool with respect to a workpiece shaft face in which a bore is to drilled or a surface is to be shaped. The tool has a generally cylindrical tubular body having a first threaded end portion with external threads thereon, and a second, bushing end opposite thereto. Within the body are secured a first collet and a second collet. A collet compressor to inwardly urges the inner reaches of both collets radially inward toward the outer surface of the workpiece when a jam nut assembly is threadably engaged and tightened on the external threads on the threaded end portion of the body. A bushing is provided to be slideably engaged with and secured in the body. Within the bushing, a forming tool is provided that is adapted to slidingly engage and rotate within the bushing. The forming tool is adapted to shape a working face of a workpiece shaft that is brought into engagement with the forming tool.

Abstract: A tool for preparing broken stud bolts or the like for extraction by screw extractors has a guide for centering a center punch and/or a drill on a broken face of a stud. The guide is a nut and a shaft assembly. The nut has a central bore therethrough having a first portion threaded to mate with the stud threads and a second portion bored to just slide over the stud threads. The shaft assembly has a cylindrical shaft having a first end and a second end and an axial bore therethrough. The shaft includes a first externally threaded portion extending from the shaft first end of threads similar to those of the broken stud and an expandable sleeve attached to the shaft second end such that threading movement of the nut toward the shaft second end axially compresses the sleeve whereby the sleeve expands radially outward. The second end of the shaft has a conical end face.

Abstract: A drill centering device for use in combination with a drill bit for drilling centered holes in an end of a generally longitudinal piece of stock, comprises a guide box having a centrally aligned inner channel dimensioned for directing a drill bit therethrough and an annular rim extending from one end of the guide box. The annular rim is symmetrical about the inner restrictive channel of the guide box and dimensioned to receive a piece of stock for drilling centered holes in the same.

Abstract: A bushing system for guiding a bore forming apparatus within a machine tool includes a guide bushing with a central bore allowing passage of a rotating and axially moving tool, with the bushing having a generally cylindrical body with a radially extending flange having a free end and a stepped area adapted for engagement with the retainer. The retainer includes a complementary arcuate relief formed in an outer cylindrical surface for allowing the retainer to engage a stepped area formed in the guide bushing's radially extending flange. The retainer further includes a second radially extending flange with a diameter larger than the diameter of the retainer's body such that the second radially extending flange with abuttingly engage the free end of the guide bushing to maintain the bushing in axial register with a machine tool mounting fixture.

Abstract: A drill bushing is provided with a central passage therethrough for guiding a drill bit, reamer or tap in a production operation. The drill bushing includes a generally cylindrical body extending along the longitudinal axis, and first and second ends. An enlarged head is formed integral with the first end of the body and includes a first concave recess in the periphery of the head which forms a shoulder for facilitating the securing of the drill bushing to a jig plate with a locking screw. A second liner recess is also formed on the periphery of the head. The second recess forms a second shoulder which facilitates, in the alternative, the securing of the drill bushing to the jig plate, with either a locking screw or a clamp bar.

Abstract: A device and associated method for drilling a hole in the center of a broken element that is engaged within a bore, thereby enabling the broken element to be retracted by engaging the newly drilled hole. The present invention includes a collar member that defines an open central channel between two opposite ends. The collar member includes a male region adapted to engage the bore should the broken element be broken within the bore below the surface. The collar assembly also includes a female region adapted to engage the broken element, should the broken element extend out of the bore. Regardless of whether the male region engages the bore or the female region engages the broken element, the collar member aligns the open central channel over the center of the broken element. A drill bit is then advanced through the open central channel, whereby the open central channel acts as a drill guide and prevents the drill bit from wandering away from the center of the broken element.

Abstract: A femoral nail which can be implanted in a bone has a transverse hole, and an arrangement is provided for generating a magnetic field which has a maximum strength along an axis of the transverse hole and which decreases in strength in directions radially away from the axis. A drill guide for axially aligning a drill with the transverse hole has an axial drill opening through it, and first and second sensor arrangements are provided at axially spaced locations on the drill guide and each have a plurality of sensors which are at angularly spaced locations and are spaced radially from the opening through the drill guide. An arrangement responsive to the first and second sensor arrangements detects a deviation of the drill opening in the drill guide from coaxial alignment with the axis of the hole in the member, and provides an operator perceptible indication of a radial direction from the drill opening to the axis.

Abstract: Apparatus and method for removing side-bar automotive ignition locks without damage, a tool kit being provided containing a drill guide block, an adjustably molted drill bit, a side-bar pressure tool for insertion into the access opening created by the drill bit, and a wafer pressure tool for insertion into the keyway of the ignition lock to urge the lock wafer elements into alignment at the same time the side-bar pressure is being applied, causing retraction of the side-bar and consequent opening of the lock to permit its removal. Plugs are provided to reseal the drilled access opening.

Abstract: A drill and tap guide comprises a block having appreciable thickness and one or more guide holes therethrough. The guide holes are sized to suit different diameter taps and/or drills. The guide holes are perpendicular to the plane of a block first face. The first face of the drill and tap guide is placed on a flat surface of a workpiece. A drill or tap is inserted through the appropriate guide hole, which guides the drill or tap to remain perpendicular to the workpiece flat surface during a hand drilling or tapping operation. The block may have a circular or rectangular periphery. Different combinations of guide holes to suit different size drills, tap drills, and taps can be formed in the block. In all cases, the guide holes are located close to the block periphery. A magnet can be embedded in the block to aid in holding the block on ferrous workpieces.

Abstract: An apparatus for drilling lock wire holes in lock wire nuts includes a variable speed drill press mounted on a work bench and having a vertically movable drill quill supporting a rotating drill spindle on one end of which is mounted a drill chuck for holding and driving a drill bit for drilling a hole in the lock wire nuts. An N/C microprocessor is coupled to the drill press for controlling the vertical motion of the drill quill in a peck drill cycle. A nut holder, including a collet chuck having three jaw inserts is mounted in a chuck indexer for positioning the chuck in any of three 120.degree. angularly spaced positions about a central longitudinal axis through the chuck. A drill guide in each of said jaw inserts guides the drill bit at an angle against said faces of said nuts to drill lock wire holes through the nut lobes.

Abstract: A tool, for preparing broken stud bolts or the like for extraction by screw extractors and more specifically is a guide for centering a center punch and/or a drill on a the broken face of a stud, comprises a nut and a shaft assembly. The nut has a central bore therethrough having a first portion threaded to mate with the stud threads and a second portion bored to just slide over the stud threads. The shaft assembly has a cylindrical shaft having a first end and a second end and an axial bore therethrough. The shaft includes a first externally threaded portion extending from the shaft first end of threads similar to those of the broken stud and an expandable sleeve attached to the shaft second end such that threading movement of the nut toward the shaft second end axially compresses the sleeve whereby the sleeve expands radially outward. The second end of the shaft has a conical end face.

Abstract: A device and method are disclosed for forming the S-video record enable I.D. hole in VHS, 8 mm and VHS-C videocassettes. Three specially adapted hole forming implements and their method of use are described. These implements are adapted to avoid forming loose debris from the hole forming process and to prevent such debris which is created from entering the cassette mechanism. The invention provides for automatic positioning of the hole forming implements and for control of their movement by use of positioning plates which are specially adapted to fit on the videocassettes in a singular and specific manner. The invention further provides for controlling the operation and movement of the hole forming implements by use of guide bushings which are integral to the positioning plates. The methods used for forming the hole include cutting, piercing and melting through the plastic cassette shell.

Abstract: A tool for locating the positions where holes are to be drilled in a contoured workpiece includes several thin, flexible plates stacked on one another, conforming to the contour of the workpiece, and held together by fasteners. The intermediate plate has holes through its thickness sized to receive the nose bushing of a drilling machine, the holes being spaced along the length of the workpiece. The innermost plate, which contacts the workpiece and the outermost plate, include slotted holes aligned with the holes of the intermediate plate.

Abstract: A door preparation drill jig is usable to prepare a door to receive a lockset provided with through-bolt mounting studs in a main bore provided in the door. The drill jig has a planar body, drill guides, and a cylindrical body. The front surface of the planar body has a portion for the placement of installation instructions and the attachment of a C-clamp. Each drill guide is arranged to receive a drill bit used to drill one of the mounting holes for receiving a mounting stud of the lockset. The cylindrical body has a chamfered edged latch slot which receives a portion of the latch extending into the main bore of the door. Additional tabs appended to the cylindrical body flex to ensue the chamfered edges around the border of the latch slot firmly engage the latch in the main bore and another flexible tab flexes to ensure a tight fit of the jig in the main bore of the door.

Abstract: A chip breaker drill bushing is provided for a metal drilling apparatus. The bushing has a central channel through which a drill bit or drilling tool extends and rotates. The bushing is shaped at the workpiece end to collect metal offal carried up by the drill. Angled troughs guide the offal up and away from the workpiece and cutting edges on the end of the bushing chop the strands into small, easily handled chips.

Abstract: In the business of supplying bushings as tool guides for machine operations a minimum of two types of bushings need to be stocked. One type is a headless press fit sleeve. The other type is a slip fit sleeve with a head at one end. The headed slip fit type is desirable but greatly more costly. Such a great number of different sizes need to to stocked by the supplier that the cost of maintaining two complete inventories, one of each type, often becomes prohibitively expensive. The invention here involved makes use of only one complete inventory of bushings of the less costly and simpler press fit type and a partial inventory of separate heads which can be fitted on the press fit sleeve, modified to only a minor degree, and in this way to supply an order for the normally more costly headed slip fit bushing.

Abstract: A hand tool for the preparation of an off-set bore relative to a countersunk recess in a structural plate member wherein a pilot sleeve with a central bore slidably support an upper hollow sleeve that is spring biased away from the pilot sleeve. A bushing secured to the upper portion of said hollow sleeve also retains a drill bit that extends in to the pilot sleeve while the shank end is connectable to a drill for rotation and axial movement with the hollow sleeve relative to the pilot sleeve to drill a through bore in the plate member whose axis is off-set relative to a tapered countersunk conical recess in the plate member. The lower end of the pilot sleeve has a tapered annular surface or conical recess whose central axis is off-set relative to the axis of the central bore of said pilot sleeve, and a handle is secured to the pilot sleeve to position and hold the hand tool in the countersunk recess of the plate member as it is drilled.

Abstract: A number of drill guides are provided for quickly setting up to drill construction holes, door handle holes, hinge holes, and drawer front panel attachment holes for construction of cabinets without excessive jigging setup time. Several tools are described for quickly squaring up cabinet panels and clamping them together while glue dries.

Abstract: A method for placing screws in an orthopedic nail used in setting fractures of the long bones of the body. A fluoroscope assembly is used initially to develop an image on a monitor. This image enables the physician to adjust the fluoroscope assembly until the x-rays from the fluoroscope are propagated along lines which are coaxially aligned with the nail screw holes. This status of alignment is then used to allow reference marks to be made on the skin located on one or more lines projected through the limb containing the fractured bone in coaxial alignment with the nail screw holes.The limb is then incised at the location of one or more of these alignment marks allowing tubular drill guides of a jig to be set against the bone in a position of coaxial alignment with the screws holes through the nail.

Abstract: A lock collar for a drill bushing and a system for cooling a drill bit during a drilling operation are arranged so as to be incorporated into a single mechanism. The mechanism involves two assemblies, one being a locking liner embedded in a jig plate, and the other being a coolant directing assembly adapted to be mounted on a power-fed tool. There is coolant passage means in the coolant directing assembly which accepts coolant from an appropriate source and directs it through the first mentioned assembly to the cutting edge of the drill bit or other cutting tool while the cutting operation is taking place. By reverse rotation of the coolant directing assembly, that assembly can then be removed for subsequent engagement with another locking liner.

Abstract: A drill guide apparatus for use in drilling a central bore in a portion of a broken-off bolt remaining in a threaded bore. A clamp tube carries inwardly-directed setscrews for attaching the clamp tube to a stud or bolt located near the broken bolt. An arm extends adjustably through the clamp tube, and setscrews in the clamp tube hold the arm in a desired position relative to the clamp tube. A drill guide holder mountedon the arm includes setscrews which hold an appropriate drill guide tube in position to receive and guide a drill to bore the required hole in the remaining portion of the broken bolt.

Abstract: The assembly comprises in combination a fixing bushing (3) and a machining unit (6), the bushing being adapted to receive the nose of the machining unit which comprises the nose and a body. The bushing (3) comprises at its inlet mouth (9) inner guide means (13) and outer hooking means (14) and, internally, means (18, 19) for centering the machining unit (6). The unit comprises hooking elements (27) adapted to cooperate with the hooking means (14) of the bushing and slidable means (30) for locking the hooking elements (27).

Abstract: A two-part drill bushing assembly makes use of a sleeve, identified in the trade as a lock liner bushing which is embedded in a jig plate for reception of a separate slip renewable bushing element. Extending through the renewable bushing element is an axial bore within which a drill bit rotates during operation on a workpiece. On the exterior of the renewable bushing element is a helical shoulder which, when rotated, interlocks with a locking shoulder of the liner bushing. The invention involves a stiff wire rod, a mid-portion of which is bent to form the locking shoulder and from which legs extend to positions of snapped-on attachment to the liner bushing.

Abstract: Disclosed is a bushing (12) for guiding a rotating member such as a drill (10) into a workpiece (16). Scored in the interior wall of the bushing bore is a groove (18) in the form of a counterclockwise helix having size and slope characteristics that provide effective removal of the shavings or "chips" from the interior portion of the bushing bore as the drill cuts into the workpiece.

Abstract: A tap and drill guide consisting of arms extending outward from a center and having guide means positioned at the outer end of each arm for guiding taps and drills.

Abstract: In its preferred embodiment this jig is a rigid foam plastic casting specific to a particular type of workpiece. It enables accurate fastening of workpiece to external structure with flathead screws. Each such workpiece has a plurality of countersunk orifices of identical size and distribution pattern. Jig and workpiece are of general rectangular plan, the jig thick enough to allow for integral functional guide holes. Jig is fitted to workpiece and the associated two held against an external structure while pilot holes are drilled into the structure through the jig guide holes centered with respect to the workpiece orifices. Proper orientation of jig to workpiece is obtained and maintained by a plurality of truncated conical protuberances on the jig extending from one of its two major parallel surfaces. These protuberances are complementary in shape and distribution pattern to the countersunk orifices of the workpiece.

Abstract: Drill structure including an improved drill with indexable inserts, the drill including a straight fluted end with increased chip clearance and decreased clearance between the outer periphery of the end and the bore surface for reduced chip binding. The drill includes a grooved barrel which is received in a bushing fixed with respect to the workpiece to prevent wobble and to precisely locate the bore.

Abstract: A drilling jig is disclosed which not only permits the drilling of multiple holes on a flat surface or on the edges of a workpiece, but accessories are also disclosed which permit the drilling jig to be converted into a divider, a compass, inside and outside calibers, and a cutting guide for use with either a knife or a saber saw blade. The drilling jig consists of one or more elements having fixed drill guide bushings located along their lengths fastened together end to end. An element having a pair of drill guide bushings which are adjustable along the length of this element is also joined to the elements having fixed drill bushings so as to enable the jig to set any spacing along the length of the work. Adjustable guides are affixed to the sides of the drilling jig to enable its accurate placement on the edge of a workpiece. A device is also disclosed for fastening the elements together to enable their use as a rigid unit, while at the same time enabling them to be readily disconnected and stored.

Abstract: An apparatus for cutting away outer portions of the housing of a lock assembly in order to "pull" the lock assembly and gain entry into a safety deposit box or into an enclosure locked with a cam or similar lock, the invention allows entry into a locked enclosure with a minimum of damage to the lock. The apparatus comprises an annular guide member which fits about a safety deposit box lock or cam lock to position an annular cutting element relative to the lock so that a portion of the lock housing can be cut away to allow subsequent opening of the safety deposit box door. The annular cutting element extends through a central opening formed in the guide member and rotates within this opening, the depth of cut being controlled by a post member disposed internally of the cutting element.

Abstract: A press-fit drill bushing for use in metal tooling plates has a circular cylindrical shank, and a toothed crown with an annular groove between the shank and the crown. The ends of the teeth adjacent the groove are disposed at an angle between zero and five degrees positive so that they form chips which are automatically packed into the groove as the bushing is pressed into a tooling plate.

Abstract: An adjustable template for locating drill hole positions primarily for cabinet doors and drawers. The template consists of a flat rectangular plate having spaced drill guide holes therethrough. The position of the plate with respect to the item to be drilled is established by way of a first elongated rod extending outwardly from one edge of the plate and a pair of spaced parallel rods extending outwardly from an adjacent edge of the plate, each rod having an adjustable edge guide movably mounted thereon.

Abstract: The invention is an improved nut removal tool for removing nuts that have been corroded or otherwise jammed or stuck on the stud, bolt, or threaded piece on which they have been installed. The tool is a means for removing the nut so that the stud, bolt, or threaded piece is still useable. The tool consists of a body means which fits over the end of the stud, bolt, or threaded piece and over the nut, and having passageways therein for a drill to pass there-through to reach and drill away portions of the nut so that the nut can be separated into removal parts to remove it from said stud, bolt, or threaded piece. The tool may be configured for various shaped nuts.

Abstract: A coupling arrangement for mounting a drill jig in selected position on a Hardinge-type fixture. An arm carries a drill bushing, through which the drill passes into a workpiece held by a Hardinge fixture. Adjustment of the arm relative to the fixture is provided by the use of gauging blocks which enable the arm to be preset. The coupling arrangement assures proper movement and location of the bushing relative to the fixture.

Abstract: The spectacle frame includes a frontal lens support incorporating a nose bridge, a pair of temples, and hinges connecting each temple to an outer end of the lens support. A blind bore is formed in either the lens support or the temple at at least one outer end of the lens support. An adjustment mechanism, including an internally threaded sleeve and an externally threaded adjusting rotor member, is inserted in each bore. The adjusting rotor member has an outer end engaging the other of the lens support and the temple. The adjusting mechanism is formed with a notched or knurled operating head particularly configured for operative association with assembling tools.

Abstract: A rotary tool assemblage includes an axially movable rotary tool and apparatus for holding a workpiece for engagement by the tool. A guide bushing is rotatably supported and interposed between the tool and the workpiece to guide and pilot the tool. The guide bushing and tool are rotationally interlocked to preclude relative rotational movement therebetween.

Abstract: A pair of metal longitudinal members (herein called "tubes") having spaced holes along their lengths are held in place lengthwise against a wooden utility pole by means of spring-tensioned chain tighteners. A plurality of V-shaped brackets are slideably connected at their ends across the tubes, the brackets having positioning pins in their ends for insertion into the holes of the tubes. Interchangeable bushings for different diameter drills are affixed to the V-shaped brackets. Preferably, a top support bracket having a pipe which fits on top of the pole is affixed across the upper ends of the tubes. The V-shaped brackets can be slid up and down the tubes so that holes can be drilled at precise distances from the top of the pole and from one hole to the next.

Abstract: A clamping and drill guide apparatus which is utilized by an operator to aid in manually drilling holes in work pieces which have an arcuate contour. The apparatus includes a first clamping member which has a multiplicity of openings axially passing through the first clamping member in a vertical direction. A second clamping member located in alignment with the first clamping member and below such includes a multiplicity of threaded through openings which axially pass in the vertical direction and are alignable with each of the through openings in the first clamping member. A pair of screw and nut members provide for clamping the first member to the second member when a work piece is inserted therebetween. Further, the apparatus provides a mechanism for axially aligning the work piece between the first member and the second member.

Abstract: A versatile portable workholder can be used as a vise, a V-block and a drill jig for holding different sized and shaped workpieces. The workholder includes a vise comprising two jaw pieces actuated by a screw member. A clamp can be clamped in the vise and includes a second screw member for clamping a workpiece between the clamp and the vise. A stop member is connectible to the vise for positioning or locating a workpiece relative thereto. The second screw member has a bore and serves as a drill bushing.

Abstract: Apparatus for use in reconditioning engines by reworking or replacing the valve guides and seats thereof, which obviates any need for meticulously positioning a toolholder individually for each valve location. A toolholder bar has one end cross-bored to receive tool-guiding bushings, and the bar has a diametral slot extending axially along a major portion of its length, in alignment with the cross-bore. A pair of V-blocks with clamps is positioned on the head or block being reconditioned and the toolholder bar is positioned in the V-blocks, the arrangement being such that the axis of the bar is aligned with a row of valve locations. Alignment is facilitated by the use of a pair of aligning pins which pass through the slot in the bar after insertion in selected valve guides. When the V-blocks are now secured to the work piece, either of the aligning pins may be removed, and the bar may be slid axially until its crossbore is aligned with the first valve location, where it is clamped.