Abstract: A pivoting drill press mount is provided for enabling the user to drill at a desired angle into a workpiece. The mounting system has a column base, an upper column, and a pivot attaching the two columns to allow the upper column to be rotated to either side. The upper column is supported by an angle adjustment ram and a positive slide lock for safety. The assembly is bolted to a support surface. The upper column provides for interchangeable drill press heads by means of a connecting column.

Abstract: A boring tool includes a depth stop for regulating cutting depth of the boring tool. The boring tool has a shank and an elongated cutting head. The depth stop includes a sleeve body which is selectively, detachably fixed to a shank of the boring tool by a sleeve body attaching mechanism and a cutting depth regulating structure that is rotatably mounted to the sleeve body. A depth stop for regulating cutting depth of a rotary cutting tool having an axis of rotation includes a cutting depth regulating structure having circumferentially spaced, radially extending tines including a portion extending substantially in parallel to the axis of rotation and may be selectively, detachably fixed to the rotary cutting tool by a collet.

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 drywall cutting tool has a removable depth guide. The depth guide may be removed from and installed on the tool housing by rotating the guide relative to the tool. The use of a fastener or separate tool is not required. The depth guide may be adjusted for controlling the depth of penetration of the cutting element.

Abstract: A depth stop is provided that is selectively attachable to a cutting tool at an operator-selected location. The end of the depth stop that comes into contact with a work piece during operation is covered with a rotating cap. The cap prevents the work piece from being marred because the cap stops rotating when it comes into contact with the work piece while the cutting tool and the rest of the depth stop continue to rotate. The cap is rotatably mounted on the depth stop by a flange that engages a groove formed in the depth stop. An annular ring is provided between the cap and the end of the depth stop body to facilitate the rotatability of the cap with respect to the body.

Abstract: A device, for collecting drilled material and dust produced by a drilling tool, has a flange part (1) with a central axis to be secured to a housing of the drilling tool, and an axially extending container (2) for receiving the drilled material and dust and connected to and extending axially outwardly from the flange part (1) and being compressible in its axial direction towards the flange part. A ring-shaped sealing element (3) is arranged to contact a rotating part of the drilling tool. A radially outwardly extending annular rib on the sealing element is rotatably supported in an annular recess (26) in the flange part (1) and the recess is open towards the axis of the flange part so that no harmful wear can arise in spite of adequate sealing between the sealing element and the rotating part of the drilling tool.

Abstract: A drill press including a vertically disposed support post and a pivot assembly supported upon the support post is disclosed. A table is supported on the pivot assembly. The pivot assembly is pivotable about a first substantially horizontal axis, with the table pivoting about the first horizontal axis jointly with the pivot assembly. The table also is pivotable relative to the pivot assembly about a second substantially horizontal axis. The pivot assembly also may be pivoted around a vertical axis defined by the post and may be raised and lowered along the vertical post. A clamp plate is adjustably secured to the table and a telescoping extension arm is fixably secured relative to the table by the clamp plate. A guide fence is slidably disposable along the upper surface of the table and may be secured at various locations. A clamp may be adjustably secured either directly to the table or to the guide fence to vertically clamp a workpiece on the table.

Abstract: The present invention relates to a cutting device for making holes, in particular holes in walls of hollow bodies made of plastic material, comprising a mount to which a cutting tool for cutting out a hole is secured, the mount being rotatably driven and performing an axial feeding motion, and an engaging member penetrating a disk which becomes separated in cutting the hole, the engaging member centrically penetrating the disk with respect to the periphery of the hole and withdrawing the separated disk which is then removed from the engaging member. The engaging member is axially displaceable and rotatably driven independent of the cutting tool and includes a self-cutting threaded profile turned into the disk before starting the cutting operation of the cutting tool and engaging the disk by forming a thread by means of the self-cutting thread of the engaging member.

Abstract: A drill press having an assembly for preventing a drawer from being completely removed from a drill press. The drill press has a base in which the drawer is received, the base having an opening formed between two side portions of a bottom member of the base. Each of the side portions has a plate fixedly engaged thereto with a part of the plate extending into the opening and having an aperture formed therein. A positioning element is fixedly engaged to each plate and has an extension extending through the aperture. The extension of each positioning element has a first and a second inclined surface formed on a top end thereof. The drawer has a first stop and a second stop laterally extending from each of the two sides thereof, wherein the first stop is shorter than that of the second stop and the drawer is stopped by the second stop being blocked by the extension of the positioning element.

Abstract: A drilling mechanism for drilling one or more holes in a workpiece includes a collet for securing the drilling mechanism to a hole formed in a fixture mounted in front of the workpiece. The collet is slidable rearwardly along a tapered nosepiece to be elastically expanded outwardly into tight frictional contact with the fixture hole. The collet comprises a clamping part and a separate displacement part connected thereto. A contact interface is formed by the clamping and displacement parts for transmitting rearward forces from the displacement part to the clamping part. The contact interface extends for 360 degrees about the center axis of the collet. Longitudinal play is provided between the displacement and clamping parts so that when the collet is to be moved forwardly and released from the fixture, the displacement part is initially moved longitudinally relative to the clamping part to apply a radially inward force to the clamping part for disengaging the clamping part from the fixture hole.

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 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 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 universal guide for an electric drill includes a transparent elongated L-shaped member with two mutually perpendicular faces. Each face has two parallel long edges and two short edges, and they share a common long edge. For each face, one of the two short edges is a perpendicular edge and the other of the two short edges is an angled edge in which the perpendicular edges are perpendicular to the long edges, and the common edge is formed such that the perpendicular edges are mutually adjacent to each other and the angled edges are mutually adjacent to each other. Magnetic areas are formed on surfaces of each of the faces. Level indicators are attached to each face perpendicular to the common long edge and to the common long edge in a direction perpendicular to the perpendicular level indicators. At least one long edge is ruled and guide lines are marked on the faces in a direction parallel to the long edges.

Abstract: A chamfering device incorporating a power tool for driving a rotary bur or the like provided with an elongated shaft and a cutting head, wherein the shaft is enclosed at a small clearance by a first, mainly tubular member, which, after mounting of the shaft with the said first member fitted thereto in the power tool, is held in position by a second, mainly tubular member, which is fixed to the power tool and is connected to the first member thereby arresting this in position, a third, mainly tubular member being provided over the second member, said third member being displaceable in the axial direction of the second member and lockable in occupied positions, said third member being an adjustable extension of the second member.

Abstract: An axially moveable portable tool, such as a drill, and a guide for the tool are disclosed. The guide has a base with a post and a handle attached to and extending from the base. The post and handle are positioned so that a projection of the time of force applied during use to the tool grip and to the handle, both fall substantially within the base footprint. The upper extremity of the post can be provided with attachments that form parallel guide means or with angular sections that form a external guide for standard size and shaped portable tools. The portable tools can be easily attached to the post to assume a specific angle with the base and can be easily removed from it for independent use.

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

Abstract: A guide for an axially movable hand-held tool, such as a drill, is disclosed. The guide has a base that supports a pivot assembly including a post attachment with a guide post and an angle locator, used with an adjustment shaft for angle cuts. A "U" bracket adjustably supports the post attachment on the guide base. One end of the adjustment shaft is shaped to prevent rotation while permitting reciprocation of the shaft within the "U" bracket. A handle cooperates with the adjustment shaft to clamp the pivot assembly to the "U" bracket and guide base at selected angles and is used to position and control the guide during use. A spring biases the post attachment toward one leg of the "U" bracket for angle selection, location and retention.

Abstract: A self-guidable portable electric drill having as an integral appendage of the motor housing a V-grooved channel which is instrumental in guiding the drill on an axis perpendicular to the work surface when the trough of the V-groove is butted against, and slidably moved downwardly along the blade of the common try or combination square standing perpendicularly on the work surface.

Abstract: A flush bolt boring jig is rigidly attached to a drill. The drill has a bit which is the length of the bore to be formed in the door. The jig holds the drill rigidly so the bore being drilled in the door is parallel to the free end of the door. This is done by tracks mounted by clamps in such a way that the tracks are parallel to the free end of the door. The jig is attached to a pair of slide tubes which slide on the tracks. Since the drill is attached to the jig, as the hole in the door deepens, the drill moving with the slide tubes over the tracks moves in a straight line so that the bore being formed is exactly parallel to the free end of the door.

Abstract: An axially moveable portable tool, such as a drill, and a guide for the tool are disclosed. The tool is provided with a gripping means and an internal guideway parallel to the axis of tool movement on the grip side of the tool. The guide has a base with a post and a handle attached to and extending from the base. The post and handle are positioned so that a projection of the line of force applied during use to the tool grip and to the handle, both fall substantially within the base footprint. The portable tool can be attached to the post to assume a specific angle with the base and can be easily removed from it for independent use.

Abstract: A drill alignment apparatus for a drill adapted for osteoplastic surgery comprises an alignment rod mounted thereto and a clamp element. The alignment rod is parallel to and disposed a predetermined distance (D) from a shaft of the drill. The clamp element includes an aperture which permits passage of the rod. The clamp element is adapted to be affixed to a bone, such as a femur, so that the aperture is displaced from the central axis of the bone by substantially the same distance which the center axis of the alignment rod is displaced from the center axis of the drill shaft. When drilling is commenced, the forward end of the alignment rod is placed within the aperture of the clamp element. As drilling progresses, the rod passes through the aperture, thereby ensuring that drilling occurs along a predetermined drilling path extending along the bone axis.

Abstract: A guide accessory for hand-held electric drills having straight sides. A drill is set up for use simply by inserting it into the guide, where it fits snugly and slides linearly. An enlarged foot section holds the guide perpendicular to the work surface. The foot is abbreviated on one side, permitting the guide to be used close to obstacles. An adjustable stop facilitates drilling holes to precise depths. The stop assembly is also used to tilt the guide for drilling holes at various indicated angles. A stepped "v" block at the bottom of the guide facilitates drilling centered holes in round stock, corners, and the edges of boards. A resilient, transparent material is used in construction to permit viewing the drilling process while protecting the user's eyes. Holes are provided for ventilating the drill and for hanging the guide on a workshop pegboard.

Abstract: A power tool motor housing rotates a spindle assembly which moves axially within limits of adjusting nuts. A sensing sleeve maintains an axially fixed position with respect to the drive housing and thus with respect to a depth adjustment for controlling axial movement of the spindle. A foot piece moves along the sleeve as an adjusting nut is rotated on the sleeve to adjust stand off without changing preset depth of cut. A swivel assembly connects the sensing sleeve to the power housing so that the power housing may be rotated or indexed without changing the distance between the sensing sleeve and the depth adjustment.

Abstract: A portable electric power tool constituted by two cooperating main components, namely, a power head of predetermined exterior cross-sectional shape and a sleeve with interior surfaces mating to the power head to afford relative sliding movement, but not relative rotational movement of the two. The power head includes a driven shaft adapted by a chuck or the like to receive and hold any of a variety of cutters or the like. The foot of the sleeve is adapted for sliding translation along, or positioning on, a workpiece surface. The angle of the sleeve body relative to the foot is adjustable. By locking the sleeve at any desired angle to the foot, the angle of penetration or engagement between a driven cutter and a workpiece may be accurately pre-established.

Abstract: A multispindle-drilling machine for drilling series of holes, in particular in parts of pieces of furniture, includes a drilling head, carrying drilling spindles. Two positioning pins are mounted on the head for displacement relative thereto in directions axially of the pins. The pins are fixable at upper and lower positions relative to the head. The pins are displaced relative to the head and are held by automatic catches upon completion of a drilling operation.

Abstract: An automatic countersink depth control tool and a combination of the same with an installer for fasteners having countersink heads. The tool has a nonrotatable stop (76) for limiting the depth of a countersink drilled in a fastener hole. The stop (76) is adjustably movable toward or away from a workpiece in which the countersink is to be drilled, the movement of the stop being relative to the depth of the countersink. There is a rotatable screw gear (50) having an external ring gear (54) for moving the stop in accordance with the depth of the countersink and in accordance with the height of the head of the countersink head of the fastener to be installed in the hole. There is a motor (90) having a spur gear (94) engaged with the ring gear (54) to rotate it a predetermined amount by a threaded engagement of the screw gear (50) and the stop (76). Because the stop is nonrotatable, the rotation of the threads moves the stop the desired amount.

Abstract: Disclosed is a nose piece for a power drill and hand drill with certain modifications made to nose piece and using telescopic bushing having a drill motor, a drill spindle and a drill bit attached to the spindle, the nose piece being capable of macro longitudinal adjustment with respect to the length of the drill bit and rotational adjustment of its position with respect to the drill motor and the work piece.

Abstract: Device designed to move a section (2) being machined past machining means (9, 10) and in the long direction of the section so that it can be positioned with respect to the machining means, comprising at least one clamp (20) designed to grip the said section at at least one position along its length, means (27) for actuating the said clamp (20) so that it grips or releases the said section, and translation means (12, 13, 18) for moving the said clamp (20) in the lengthwise direction of the section in order to move this section past the said machining means (9, 10).

Abstract: A safe lock drilling apparatus comprising a jig adapted to straddle the lock of a safe that it is desired to drill out and hold a drill motor and bit in a pre-aligned adjustable relationship to the lock thereby allowing the bit to be held perfectly still and at a fixed angle while drilling.

Abstract: Portable handheld device for electricians, plumbers and builders to use to form in one operation perfectly aligned, craftsman-like holes through a soffit and a roof above, or through a ceiling and a roof above, through which aligned holes an electrical conduit, soil stack or vent pipe, chimney pipe, or the like, may be installed.

Abstract: A drill jig includes a frame adapted for mounting on a work surface, and a guide for guiding a drill bit to various positions on the work surface and along mutually orthogonal axes for boring a hole having its major axis aligned at any desired angle relative to the work surface.

Abstract: A tool guide for providing controlled support for a portable power tool such as an electric drill. When the lower portion of the device is clamped between the vise jaws of a portable workbench and vise, an electric drill slidably mounted on the device may be used to drill either perpendicular or angular holes in a workpiece positioned on top of the vise jaws. The device may also be used independently to add accuracy to free hand drilling for both perpendicular and angular holes.

Abstract: A tool guide for providing a stationary support for a portable power tool such as an electric drill. When the lower portion of the device is clamped between the vise jaws of a portable workbench and vise, an electric drill slidably mounted on the device may be used to drill either perpendicular or angular holes in a workpiece positioned on top of the vise jaws. An adjustable depth stop operatively associated with the slideway of the device provides accurate depth control. The device may also be used independently in order to add accuracy to free hand drilling for both perpendicular and angular holes.

Abstract: A router assembly including a router sub-assembly vertically adjustable relative to a supportive base plate through the utilization of a sub-assembly supported rack gear and a pinion gear meshed with the rack gear and journaled from the base. The base includes a handle portion for horizontal directional control of the router assembly during routing operations and oscillatably supported from the base. Connecting structure operatively connects the handle portion and the pinion gear for oscillation of the latter in response to oscillation of the former, whereby adjustable oscillation of the handle will be effective to vertically adjust the router sub-assembly relative to the base plate.

Abstract: Electrical apparatus includes an outer enclosure, an electrode within the enclosure, and an insulating gas electrically insulating the electrode from the enclosure. A support plate is secured to the outer enclosure, and the support plate has an opening therein. A housing, containing valve means, is secured to the support plate adjacent the support plate opening. An end plate is secured to the end of the housing. The valve means in the housing are capable of being in two positions, a first position preventing the flow of gas past said valve means, and a second position wherein an opening which is through the valve means is aligned with the support plate opening.An opening is formed through the enclosure in the wall portion thereof which is in alignment with the support plate opening. The opening through the enclosure is formed without generating contamination particles within the enclosure and in a manner which minimizes escape of gas from the enclosure.

Abstract: A tool guide, particularly for an electric hand drill, to affix to a drill and guide it in drilling a hole perpendicular to a surface. The guide has drill holding means which incorporates a manually adjustable locking mechanism which allows for the ready accommodation of drill bits of different sizes. The guide has also drill fixing means onto its drill holding means to instantly, firmly and independently hold the guide onto the drill during operation.

Abstract: An apparatus for drilling pipes or containers under pressure employing a drill support device attachable to a surface of the pipe or container and having peripheral sealing means between said device and said container. A seal across an aperture in said device has sectoral leaves normally closed by the pressure to seal the aperture but able to be opened inwards to pass a drill.

Abstract: An attachment for motor powered drills for accurately positioning drill bits when holes of regulable depth and angle are to be drilled in a work piece. An open-centered base for contact with the work piece provides journal supports for paired rotatable trunnions that may reciprocally receive guide rods disposed above the base and at right angles to said trunnions. Paired guide sleeves of a frame attached to the drill motor and disposed parallel to the axis of the drill reciprocally receive the guide rods, and the drill and its bit are, accordingly, movable along the guide rods to cut a desired hole in the work piece. Index means and detents facilitate varied angular positionings for said trunnions and guide rods whereby holes that are angularly disposed with respect to the work piece may be drilled. The guide rods may be extended through the base to provide accurate centering of drilled holes, and a separate jig or vise is provided that holds the drill attachment and drill, etc. in adjusted lateral positions.

Abstract: Drill guide apparatus designed for use with a portable electric, air, or hydraulic drill includes a base adapted to rest on a support. The base is provided with a handle for portability. A standard is mounted on the base through a pivotable mounting connection. A slide and guide mounting means mounts the drill on the standard. Stop means on the standard determine the depth of the drilled hole.

Abstract: A drilling or milling machine has a suction chamber surrounding an axially moveable tool, the chamber being axially moveable relative to the tool and spring biased for abutment against a working surface during machining, after the tool has been fed forwardly in a rapid first phase, then slowly just prior to and during machining. The chamber is composed of two half-shells secured onto a mount on the tool body by a locking ring, and which can be separated by removal of the ring and radial outward movement to provide access to the tool without a need to raise the tool body. The abutment-surface of the chamber may be rigid for laterally-stationary tools, or formed of a ring of flexible bristles for laterally moving tools, e.g. for routing printed circuits. Several compressed-fluid delivery nozzles can be provided in the suction chamber to improve the removal of dust and chippings.

Abstract: A drill guide intended as an accessory to a portable hand-held drill may be integrally or removably attached. The removable version is a separate unit, transferable from drill to drill. A drill guide foot contacts the stock to be drilled at an adjustable angle, while adjustable locknuts mounted on a spring-biased threaded rod accurately set the depth of the holes to be drilled.