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 device for cutting holes in pipe includes a base configured for attachment normal to a section of pipe and having a track extending the length of the base, a travel plate slidably engaged in the track and configured for the accommodation of a power drill thereon, a mechanism for controlling the linear reciprocal movement of the travel plate in the track, the length of the base being just long enough to accommodate the drill and hole drilling bit assembly for operating the apparatus in close quarters. A hole locator, and an adapter for attachment of the base to smaller diameter pipes may also be provided.

Abstract: Disclosed is portable drill guide apparatus for a hand held drill. The apparatus includes a base having an upper surface, a flat bottom surface and an annular opening therethrough, the opening having an axis. A support post extends from the base to one side of the opening and is perpendicular to the base bottom surface, the post having a longitudinally extending bore. A shot extends longitudinally in the side of the post and is parallel to the axis thereof. A drill chuck assembly comprises a bar complementary in cross-sectional shape to the bore and a chuck support. The support extends outwardly from the bar and has a portion adapted to move within the slot. The chuck support further includes a shaft journalled therein, the shaft having an upper end and a lower end with a drill chuck being operatively connected to the lower end over the base opening.

Abstract: A lightweight machine for drilling a pattern of fastening holes in panels of installed roofing insulation is movably supported on rollers that rest on the panels without substantially deforming them. The machine is maneuvered by a handle, and vertical movement of the handle lowers a template carrying a gang of drills. The drills proceed through a central opening in the frame of the machine to engage the panels in the sub-roof structure on which they have been installed.

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 double-use electric drill including a frame and an electric hand drill that is secured thereto in either a first or a second orientation. In the first orientation, the frame is utilized as a hip or shoulder stock assembly when the drill is being used as a hand drill. In the second orientation, the frame is utilized as a drill press frame when the drill is being used as a drill press. The frame includes a column having a key portion formed thereon. The drill body includes a first keyway which receives the key portion of the column in the first orientation. The drill body further includes an opening including a second keyway. In the second orientation, the column is received in the opening with the key portion in the second keyway.

Abstract: A dual, mirror-image lever and linkage assembly of a drill control mechanism advances the bit of the drill toward and away from a workpiece while retaining the bit at a true perpendicular orientation relative to the outer surface of the workpiece. Each linkage and lever assembly includes two levers which are arranged to provide a compound action and which are pivotally interconnected to a base by means of respective links which spread apart from each other as the levers are buckled to advance the bit toward the workpiece. The drill is releasably carried by a support that is fixed on each side to two guide pins that slide along a slot of a guide track which is secured to the base at a location between the two links. During advancement of the bit toward the workpiece, a handle region of one of the levers is moved toward the operator in order to provide enhanced perception of the rate of advancement of the bit which is particularly advantageous when drilling, for example, through safes.

Abstract: The power tool has a magnetic base with superposed permanent magnet assemblies. The upper assembly can be moved relative to the lower assembly to subtract from or reinforce the magnetic field. When the sensing probe is pushed into the base the electric motor can be switched on to rotate a spindle on which a rotary cutting tool is axially mounted. The tool feed is controlled by a handle which can be mounted on either side of the tool housing. A coolant reservoir on the base has a hose connected to a pump which is connected to a manifold supplying coolant to the center of the cutting tool. The cutting tool is biased upwardly and pinches off the coolant when the tool is raised from the work. The tubular tool shank is retained on the drive spindle by balls carried by a cage and moved into engagement with a groove in the tool shank by a cam surface on a release collar spring biased to move the balls to engage the tool.

Abstract: The power tool has a magnetic base with superimposed permanent magnet assemblies. The upper assembly can be moved relative to the lower assembly to shunt or reinforce the magnetic field. When the sensing probe is pushed into the base the electric motor can be switched on to rotate a spindle on which a rotary cutting tool is axially mounted. The tool feed is controlled by a handle which can be mounted on either side of the tool housing. A coolant reservoir on the base has a hose connected to a pump which is connected to a manifold supplying coolant to the interior of the cutting tool. The cutting tool is biased upwardly and pinches off the coolant when the tool is raised from the work.

Abstract: A drill stand includes a base plate, an elongated guide column extending outwardly from the base plate and a drilling device movably supported on the column. The guide column is formed of two laterally spaced elongated support members each having the same cross-section transversely of the elongated direction. A drilling device is positioned between the two support members. A rack is secured to the guide column and a feed mechanism for moving the drilling device includes a pinion in meshed engagement with the rack. Guide members on the support members fit into correspondingly shaped guide grooves on the drilling device.

Abstract: The power tool has a magnetic base with superposed permanent magnet assemblies. The upper assembly can be moved relative to the lower assembly to subtract from or reinforce the magnetic field. When the sensing probe is pushed into the base the electric motor can be switched on to rotate a spindle on which a rotary cutting tool is axially mounted. The tool feed is controlled by a handle which can be mounted on either side of the tool housing. A coolant reservoir on the base has a hose connected to a pump which is connected to a manifold supplying coolant to the center of the cutting tool. The cutting tool is biased upwardly and pinches off the coolant when the tool is raised from the work.

Abstract: A power hand drill is clamped in the carriage which is slideably mounted on the vertical column. The lever arm is moved about a fixed pivot to control movement of the carriage. The lever arm is tubular and has a push rod extending from the handle into the interior of the housing to actuate a switch which, when closed, connects the power supply cord to a receptacle into which the drill power cord is plugged. The drill power switch is tied in the closed position. Therefore the user can control drill feed and operation with one hand.

Abstract: The drill stand has a vertical column and a clamp moveably mounted on the column. A carriage adapted to support a drill is moveably mounted on the column for movement with and with respect to the clamp. A link is pivoted on the clamp and has two pivot locations. A lever arm is pivotally connected to the carriage and has two roller pivots selectively engageable with either of the pivot locations to change the force multiplication and travel distance as the arm is pivoted about the selected pivot location. Each pivot location is at the end of a track having one portion on a curve centered on the link connection to the clamp and another portion on an arc centered on the pivot location associated with the other of the tracks. Each roller engages one of the tracks. The pivot locations are closer together than are the rollers so only one roller can be in a pivot location at one time.

Abstract: The power tool has a magnetic base with superposed permanent magnet assemblies. The upper assembly can be moved relative to the lower assembly to subtract from or reinforce the magnetic field. The upper assembly is somewhat shorter than the lower assembly so even when the upper assembly is positioned to shunt to subtract from the flux of the lower assembly there will be some magnetic flux attracting the base to a ferromagnetic material. When the sensing probe is pushed into the base the electric motor can be switched on to rotate a spindle on which a rotary cutting tool is axially mounted. The tool feed is controlled by a handle which can be mounted on either side of the tool housing.

Abstract: The stand for a portable power drill has a base supporting an upright column on which a clamp is mounted for slideable movement to a desired height where it is fixed. A carriage is slideably mounted on the column with a bushing on each side of the clamp. A spring biases the carriage upwardly. A power drill is clamped on the carriage and the carriage can be moved downwardly relative to the clamp against the bias of the spring to feed the drill bit into the work. A lock plate having an aperture slightly larger than the diameter of the column fits over the column and is spring biased to tilt on a fulcrum on the underside of the clamp. When tilted, the aperture edges engage ("and bite") the column to support the carriage and drill. The plate has a pad which is depressed against the spring bias to release the plate so the clamp and carriage can be raised or lowered.

Abstract: The power tool has a magnetic base with superposed permanent magnet assemblies. The upper assembly can be moved relative to the lower assembly to subtract from or reinforce the magnetic field. When the sensing probe is pushed into the base the electric motor can be switched on to rotate a spindle on which a rotary cutting tool is axially mounted. The tool feed is controlled by a handle which can be mounted on either side of the tool housing. A coolant reservoir on the base has a hose connected to a pump which is connected to a manifold supplying coolant to the center of the cutting tool. The cutting tool is biased upwardly and pinches off the coolant when the tool is raised from the work. The tubular tool shank is retained on the drive spindle by balls carried by a cage and moved into engagement with a groove in the tool shank by a cam surface on a release collar spring biased to move the balls to engage the tool.

Abstract: The power tool has a magnetic base with superimposed permanent magnet assemblies. The upper assembly can be moved relative to the lower assembly to shunt or reinforce the magnetic field. When the sensing probe is pushed into the base the electric motor can be switched on to rotate a spindle on which a rotary cutting tool is axially mounted. The tool feed is controlled by a handle which can be mounted on either side of the tool housing. A coolant reservoir on the base has a hose connected to a pump which is connected to a manifold supplying coolant to the interior of the cutting tool. The cutting tool is biased upwardly and pinches off the coolant when the tool is raised from the work.

Abstract: A device (10) is provided that is operative for purposes of accomplishing the drilling, boring and tapping of a relatively large size opening (106) in a body (17) while the latter is located in a hostile environment. The subject device (10) is characterized both in that it is portable and in that the boring and tapping functions are combined into the same device (10). The subject device (10) includes fixture means (18) for effecting the alignment of the device (10) relative to the opening (106) that is to be bored and tapped, support means (14) having a surface supported thereon in juxtaposed relation thereto, first operating means (16) supported on the aforesaid surface for movement relative thereto in a predetermined direction, and second operating means (104) cooperatively associated with the first operating means (16) for movement therewith and operative for purposes of performing certain machining operations.

Abstract: A drilling stand has an axially extending guide column with a U- or C-shaped transverse cross-section forming an interior space in which a carriage is guided for movement in the axial direction. A drilling unit is mounted on the carriage and includes a drive member supported on the carriage within the interior space and a receiving part forming a holder for a drilling tool, connected to the drive member and projecting laterally outwardly from the guide column.

Abstract: A wheeled carriage has an upright column with a laterally projecting and vertically adjustable arm thereon. The projecting end of the arm has a dove-tail connector thereon rotatably adjustable in a horizontal plane; a tubular feed screw support has a mating dove-tail part on its bottom side engageable with the connector. The end of the feed screw support has a second dove-tail connector thereon and rotatably adjustable in a vertical plane. A bracket attachable to the motor of an electric drill has a second mating dove-tail part engageable with the second connector with the shaft of the drill chuck aligned with the axis of the tubular support. Two spaced tubular chucks are mounted on opposite sides of the tubular support to receive and releasably lock anchor cables parallel to the drill.A modification interposes a horizontally rotatable connector bar with a mating dove-tail part on its side, and a dove-tail connector on one end, between the arm on the upright and bracket supporting the drill motor.

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: A work stand for power operated tools such as, for example, an electrically powered hand drill, with the work stand including a supporting bracket adjustable along a guide column, a guide plate pivotable about a horizontal axis at the supporting bracket, a slide displaceable in a prismatic guide of the guideway, and a machine support carried by the slide. The machine support is adapted to be pivoted around the horizontal axis and is steplessly adjustable around both axes up to a full rotational angle so as to accommodate large rotational moments in a fixed condition. The guide plate and the machine support are each provided with a truncated conically-shaped axle journal accommodated in an associated conical pivot bearing respectively provided at the supporting bracket and the slide.

Abstract: An improvement in the portable electric drill. The drill shaft of the electric drill is supported for up and downward movement and is provided with a lifting and lowering lever. The lifting and lowering lever is carried by a bracket which also supports a drilling object holding device. In the drilling operation, the drill device as a whole is supported by the drilling object holding device so that the lifting and lowering lever can be manipulated safely and efficiently.

Abstract: A multipurpose clamping device for a modular tool comprise first and second clamping jaw members each of which has a front face with an aligned modular tool clamping receiving opening. The jaw members include base portions with side rails extending therethrough at spaced lateral locations providing means facilitating the movement of the jaw members toward and away from each other without canting. The clamping device is associated with each opening to clamp the tool in position. The clamping device may be used as a vise by inserting a vise clamping jaw into each opening of each member and in such instance the spindle is advantageously threaded to each member to permit members to move upon driving of a threaded spindle member. The device may also be used for example as a support for a hand drill which may have its forwarded end inserted in the opening and clamped therein so as to line a tool receiving chuck therein which may be rotated and align it with a tailstock center carried by the other jaw member.

Abstract: An apparatus for rebuilding vehicle axles permits rapid repair at the failure site. The rebuilding apparatus includes a substantially conventional boring machine having specially configured mounting components which facilitate securement of the apparatus to various axle structures. Such components include a plurality of mounting plates, one of which is selected to match the bolt circle pattern on a specific axle. The plate is secured to the axle and the boring machine is secured to the plate. Vertical and horizontal adjustment devices facilitate accurate alignment of the boring tool with the vehicle axle.

Abstract: Method and apparatus for hand drilling wherein the reaction torque generated in the hand drill from the workpiece is transferred to a support for the drill and then back into the workpiece to not only divert stress from the operator's body but also to hold the workpiece in fixed position. In one preferred embodiment, the drill support includes a holder, means mounting the body of the drill in the holder, and an elongated load transfer number on which the holder is mounted for vertical movement therealong. In use, the lower end of the load transfer member is located adjacent the side of the workpiece so that the equal but oppositely directed torques generated in the workpiece and the drill respectively will hold the workpiece fixed against the side of the load transfer member while the torque (reaction) generated in the drill is transferred away from the operator's body to the load transfer member and then into the workpiece.

Abstract: The invention concerns a portable electromagnetic pneumatic power drill. It may be used to make rivet or bolt holes in structural steel girders in guilding and bridge construction. The base of the drill stand is secured to the steel workpiece by electromagnetism. Exhaust air from the drill head cools the electromagnetic base as well as the bit and workpiece. Drill chips are diverted by the exhaust stream and deflected from the rack slide mechanism by a shield. This allows the slide to approach the base and workpiece very closely to improve steadiness and accuracy of drilling.

Abstract: A portable drill press mechanism for electric hand drill characterized by a support post, a drill support assembly coupled to the support post, and clamping members removably attached to one or both ends of the support post. The drill support assembly has a drill clamp for attaching the hand drill to a movable carriage under the control of a carriage actuating mechanism. An angular adjustment mechanism is provided in the drill support assembly so that the hand drill can drill holes at various angular orientations relative the support post. Various clamping members are provided for special jobs, such as drilling into a work piece of rectangular cross-section, or drilling a hole from the inside of a large cylindrical container.

Abstract: A portable horizontal drill press for drilling holes in the surfaces of highway vehicles and construction type equipment including a T-shaped base support beam which is mounted on swivel type wheels with low clearance provided to minimize tipping. A drill support column having a slidable mounting platform for an industrial type drill motor is mounted at one end of the beam support structure. The drill motor platform includes a hand wheel and lead screw combination which is used for feeding the drill motor into the work. The height of the drill motor platform can be adjusted either by a rack and pinion gear provided on a one-piece solid column or the column can be provided in several telescoping sections which can also combine a rack and pinion gear for the upper section of the column. A similar height elevating and positioning arrangement can be provided for a center support column provided at the opposite end of the base support beam.

Abstract: A lightweight portable jig assembly for supporting a power drill and for advancing and retracting the drill towards and away from an overhead workpiece comprises a carriage having a first tubular portion slidable on a tube standard and a second tubular portion within which slides a second tube on which the drill is mounted. A releasable lock mechanism is cooperative relation with the carriage and tube standard prevents downward movement of the carriage on the standard while permitting upward movement of the carriage on the standard whereby the carriage may be selectively positioned on the standard simply by lifting the carriage to the proper vertical height and then released to lock same in place. Advancement and retraction of the drill towards the overhead workpiece is obtained by a manually operable lever and linkage which further is operable to effect automatic release of the releasable lock mechanism upon retraction of the drill.

Abstract: An improved boring tool comprising a generally elongated housing member, an angle drive mechanism providing rotation about an axis at right angles to the housing member, and a unique floating boring bit which is slidably mounted upon the angle drive mechanism for axial movement along the axis of rotation. The boring bit features a central lead screw for drawing the bit axially into and through the workpiece over which the boring bit is placed as permitted by the floating mounting. A telescoping wall structure of the boring bit permits the bit to continue extending axially to complete penetration of the workpiece. An integral power source may be provided or provision made for the attachment of a portable electric drill or other readily available external power source. The cutting head of the boring bit may be removably mounted to facilitate replacement of worn cutting surfaces and to permit substitution of boring bits of different sizes for boring holes of different diameters.

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: In a stand for supporting a drilling tool, a guide block is movably supported on a guide column. The drilling tool is attached to the guide block. Rollers are mounted in the guide block and contact the guide column for effecting rolling movement of the block along the column. Elastic members associated with the rollers assure contact between the rollers and the column.

Abstract: A carriage support for an electric, power-driven hand tool having a rotating chuck for receiving for rotation such tools as twist drills, disk saws, buffing and sanding disks, routing tools and the like comprising a carriage member which constitutes a primary support and spaced supporting arms thereon between which the housing of the power-driven hand tool can be positioned, one at least of the arms being movable relative to the other to embrace the housing placed therebetween, teeth mounted to the arms adapted to be engaged with the vent openings in the housing to fix the position of the housing relative to the carriage member and means for maintaining the arms in positions of engagement of the teeth with the vent holes.

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 working stand for collarless electrical home worker machines, which machines have at the end of their drive shaft a threaded section for screwing on or attachment of a drill chuck. A machine holder is moveable up and down a vertical polygon guide column and can be fixed in position at whatever desired height. The guide column has a toothing, in which there engages a gear which is driveable by means of a hand crank, the gear being mounted in the machine holder. The machine holder has a pair of adjustable clamping jaws embracing the polygon guide column. In the machine holder a vertical shaft is rotatably mounted, which shaft on the upper end has an axially interior threaded section for reception of the drive shaft of the machine and on the lower end, which end projects from the machine holder, has a threaded section for the screw-on attachment of the drill chuck.

Abstract: An apparatus is provided for use in conjunction with an electric drill to achieve precision drilling of holes at various desired angles in a workpiece. The apparatus comprises a base member which supports two pivoted, spring-containing columns bridged by a sliding carriage member carrying a spindle and chuck. The base member fits into an underlying anchoring means which assures accurate placement of the drill and steadiness of support. Hole indicator means, used in conjunction with said anchoring means enable precise location of hole sites on the workpiece.

Abstract: A breast drill including a casing of elongate hollow form containing gearing for transmitting drive to a drill chuck, and a grip handle connected to the casing and capable of angular adjustment around the casing so that it can be located at a required position in relation to the position of a crank handle which can be turned to transmit drive to the chuck.

Abstract: The present invention discloses a portable precise dowel joint woodworking device for drilling holes in a woodwork piece. The device comprises a horizontally slidable power drill mounted on a base, a handle pivotably attached to a drill, a hold-down lever hinged to a hold-down support mounted on the base to support the workpiece in a vertical attitude, a vertically adjustable work table upon which the workpiece can rest, and a depth-stop bolt attached to a sliding bar support for adjusting the depth of the hole to be cut into the workpiece.

Abstract: A power drill attachment for exerting pressure through the drill bit onto the workpiece has a toggle linkage to provide a mechanical advantage of such sensitivity as to permit the operator to easily and quickly control the amount of pressure being exerted throughout the drilling operation. The attachment is especially adapted for use when drilling holes in door and window frames, through floor joists, studs, rafters and other building framework.

Abstract: A generally horizontal support table is provided including an upper surface and defining a transverse center line. A support member is supported from the table for guided rectilinear reciprocation toward and away from one side of the table in a plane normal to the upper surface of the table and the support member includes structure for supporting a rotatable chuck therefrom disposed above the upper surface of the table and in the aforementioned plane. The chuck faces toward the table and is adapted to rotatably support a drill bit. Further, a pair of abutment members overlie the upper surface of the table on opposite sides of the aforementioned plane and are supported from the table for guided movement toward and away from the plane along paths normal to the plane.

Abstract: An apparatus for supporting a power driven drill for drilling holes in a workpiece, such as a beam and the like, is disclosed which includes a support frame having clamping members for fixedly securing the frame to the workpiece, and having drill support and guide means operative to stabilize and guide the drill as it is fed into the workpiece by means of a manual power screw.

Abstract: Properly aligned threaded or smooth bores are machined in a pipe boss fla without requiring supplementary staging or makeshift rigs. An expandable holding sleeve is inserted in the throat of the pipe and a mounting unit is brought to rest on the outer surface of the pipe boss flange. A holding sleeve is expanded to engage the pipe and a bracket grips a projection from the mounting unit at a predetermined angular rotation while an extension of the bracket ensures a perpendicular orientation. A vertical feed mechanism mounted on the bracket directs a motor driven drill assembly through holes located in the mounting plate. After the holes and threads are machined in the pipe boss flange, the expandable sleeve is loosened and the unit is removed at a minimal time and effort expenditure.

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.

Abstract: A holding device for a manually portable drilling machine includes a detachable tension element which is attached at two mutually opposite points to a carrier member for the portable drilling machine, the tension element being sufficiently long to encircle at least the horizontal circumference of the object to be drilled at the vertical level of the hole to be drilled. In addition the device includes a resilient bracing means provided between the portable drilling machine and the tension element when the drilling machine is located at a drilling site and the tension element is secured to the carrier so as to be in tension around the object to be drilled.

Abstract: The power tool has a magnetic base with superposed permanent magnet assemblies. The upper assembly can be moved relative to the lower assembly to subtract from or reinforce the magnetic field. The upper assembly is somewhat shorter than the lower assembly so even when the upper assembly is positioned to shunt to subtract from the flux of the lower assembly there will be some magnetic flux attracting the base to a ferromagnetic material. When the sensing probe is pushed into the base the electric motor can be switched on to rotate a spindle on which a rotary cutting tool is axially mounted. The tool feed is controlled by a handle which can be mounted on either side of the tool housing.