Abstract: A new Power Drill Leverage Tool Assembly for providing additional leverage force upon the power drill bit in engaging a material to be drilled or reamed. The inventive device includes a tool member having a first end, a second end, a casing engaging tool for engaging a power drill casing, and a casing hole engaging tool for engaging a power drill casing hole, a handle member attachable to the tool member at the first end, and a link chain attachable to the tool member second end and to the workpiece.

Abstract: A new portable tool guide for providing extra leverage when using a power drill. The inventive device includes a first positioning member slidably mounted to a second positioning member. The second positioning member is slidably mounted to a mounting member which is detachably mountable to a structure. A lever member includes a position portion pivotally coupled to the first positioning member. Pivotally coupled to the positioning portion is the mounting portion designed for mounting a portable power tool thereto. The lever member also includes a handle portion extending from the positioning portion to help maneuver the lever member while in use.

Abstract: An adjustable pole support with a mounting bracket for a drill. At the base of the pole are a swivel bracket and a pivoting foot lever. An electrical outlet is mounted on the pole and is controlled by a separate switch. Thus, the drill trigger can be locked down at the top of the pole and the drill can be operated by a remote switch. The pole is set in a location and the pole height is set just below the ceiling. A worker then presses down on the foot plate while activating the drill control switch. The drill moves upward, the hole is drilled and the drill is then withdrawn by releasing the foot lever. Once the pole height is set, the pole need not be adjusted again. The worker moves the unit to the next hole location, pushes on the electrical control switch, pushes on the foot lever, and the next hole is finished.

Abstract: A multi-method capable portable machining apparatus including a lever bar and fulcrum that allows user to place multiplied pressure on the rotating cutting tool while at the same time controlling the torque and other reactional forces introduced by the operation. Provision is also made, in the work anchored fulcrum embodiment, so the operator can safely control break thru of the cutting tool by utilizing the compressive capability of the fulcrum in combination with a safety stop on the fulcrum. The design includes provision to apply multiplied pressure to the cutting tool using a fulcrum in either compression or tension mode. The device is light, compact, easily adjustable and multi-versatile to allow user ingenuity in method of application of the device to the situation at hand. One embodiment includes provision that allows safe, controlled operation without physically attaching fulcrum to the work.

Abstract: A motorized case trimmer is disclosed having a lever operated case holder and a motor driven trimming blade. The motor and blade are slidably mounted upon rails for quick and easy movement to provide sufficient clearance for loading a case into the case holder. A motor handle further simplifies the movement of the blade and motor whereby a simple one-step motion of the handle moves the blade and motor and locks them into a retracted position. Releasing the motor handle, permits the motor and blade to slide freely along the rails under urging by a pair of springs. The components of the case trimmer are mounted upon an elongate platform that permits adjustability of the position of the components for accommodating various size cases and for adjusting the cutting force of the blade against the cartridge case.

Abstract: A portable electromagnetic drilling machine which is provided with an enclosed motor power control cord that connects the machine electrical control panel to a machine electric drive motor for a cutting tool spindle. The provision of an enclosed electric motor power control cord eliminates any wrongful or inadvertent lifting of the machine by said cord, and insures the lifting and carrying of the machine will be carried out by a handle on the machine housing.

Abstract: An underfloor drilling jig comprises a fixed outer frame 28 and an inner frame which slides within. A standard electric drill 10 is clamped to this inner frame in a vertical position with an angled gear-box 11 attached below. An adjustable lever assembly 16, 18, 30 houses the lever 15 that can be removed via slot 17.The gear-box 11 is modified by a "blister" 12, which houses the pressure screw and housing 14.The lever 15 applies pressure to the drill bit 38 via gear-box 11.Steady-plate 36 holds the chuck 37 steady when drilling.Jaws 25 of clamp-plate 24 grip the flange of the rolled steel joist 26 when pressure is applied to the lever 15.Height adjusting screws 22 adjust the height to a horizontal position, but the front one is only necessary when drilling wooden joists.

Abstract: A milling machine has a lower frame portion with a saddle and a table coupled to the lower frame portion by a knee. The milling machine also has a head with a quill and spindle. The table provides movement of a workpiece relative to the spindle along a first axis. The saddle provides movement of the workpiece relative to the spindle along a second axis. A manual controller provides manual control of the quill. An automatic controller provides automatic control of the quill. The automatic controller and the manual controller are cooperable so that the quill can be manually and automatically controlled.

Abstract: A supporting apparatus for supporting a drill in an elevated position, the drill including a drill chuck having an axis of rotation, the drill being supported by the supporting apparatus such that the axis of rotation of the drill chuck is orientated substantially vertically, the supporting apparatus including an elongated column, an actuating lever pivotally connected to the column at a pivot point and extending outward from the pivot point in two diametrically opposed directions to thereby form two lever arms, an attachment mechanism formed on a first of the two lever arms for attaching the first lever arm to a portion of the drill, a manual grip portion formed on a second of the two lever arms, a guide link pivotally connected to both the column and to the drill adjacent the drill chuck, the pivotal connection of the guide link to the column being disposed vertically above the pivot point pivotally connecting the actuating lever to the column, and an extended plate member connected to an upper portion of t

Abstract: The extendable arm of the present invention enables the drilling of holes and installation of fasteners in ceilings directly by an operator standing on the floor below the ceiling. The arm has a foot-actuated lever, a telescopic pole, and a tool cradle. The power or impact tool is mounted on the tool cradle and is brought into contact with the ceiling by depressing the foot-actuated lever which raises the telescopic pole and thereby the tool cradle. Means for remotely actuating the trigger of the impact tool are also disclosed.

Abstract: A drilling system for drilling upwardly under automobiles, and for drilling in a direction away from a drill base in other uses, having a base to which a post is attached. A drill carrier slides on the post. A collar is adjustable to anchoring positions along the post by means of a collar setscrew. A hand-lever pivoted to the drill carrier at one end has a mid-lever-fulcrum-axis at a pivotal attachment to the collar whereby a drill on the carrier moves away from the base when the post is vertical beneath an automobile and the other end of the lever is pulled downwardly in the direction of gravity-pull.

Abstract: In a hand drilling tool, in particular for drilling out spot welds, comprising a bracing support means which is releasably mounted to the body of the drilling machine and which is displaceable in the direction of the drilling axis by way of an actuating lever which terminates in a handle, it is provided that the lever (4) acts on a fitment sleeve (6) which embraces the body (2) of the drilling machine and on which the bracing support means (3) is mounted and that the fitment sleeve (6) is adapted to be axially displaceable with respect to the body (2) of the drilling machine. To eliminate moments the axis of the lever which acts on the fitment sleeve intersects the axis of the body of the drilling machine.

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 position indicating mechanism for a milling machine or the like includes a position indicator having a rail and a position indicating scale slidably mounted thereto to provide a digital readout of the position of the scale along the length of the rail. A rail mounting bracket is adapted for mounting to the milling machine and for affixing the rail to the milling machine. A scale mounting plate is adapted for connection to the slidable scale, and also for interconnection with a movable collar of the milling machine which moves synchronously with movement of the work-performing component of the machine.

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: An adjustable drill jig for drilling holes in an overhead work surface such as a ceiling by an operator standing on the floor. The device is portable and easily moved from one work area to another by one person. It may readily be adjusted from the floor to accommodate ceilings of different heights; to vary the depth of penetration by the drill; and to control the application of power to the drill.

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: 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 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 drilling machine for use in industrial furniture production includes a drill spindle carrier which is rotatably mounted in a gear block. Two rows of drill spindles are staggered with respect to each other by 90.degree.. Driving pinions of the drill spindles are arranged in recesses of a spacer disk of plastics material, such spacer disk spacing an upper and a lower cover plate of the drill spindle carrier.

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: 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 set screw pocket drilling device for drilling blind holes in a pipe surface at a pipe joint for set screws holding the joint together including an externally threaded sleeve sized to fit the set screw hole and engage the surface of a pipe within a retainer in which the set screw hole is drilled, a drill fitting through and rotatable relative to the sleeve, and apparatus for rotating the drill relative to the sleeve. One embodiment of the device includes only a sleeve and a drill fitting through the sleeve having an outward end extending from the outward end of the sleeve for engagement of a wrench to rotate the drill and the sleeve.

Abstract: A slide and actuator mechanism for the vertical travel of the cutting tool on an Inverted pin routing machine. A slide that provides a rigid support for the cutting spindle and is durable, unaffected by wood dust, adjustable for exact alignment with top mounted guide pin, and inexpensive to manufacture. The actuator lever that moves said slide vertically by applying lifting pressure at the balance point so that the cantilevered motor mount will not cock or bind on the shaft that it rides and thus allows for gravity retract of the motorized cutting tool. Conventional shaft and bushing slides of this type use two shafts with two to four bushings riding on both shafts requiring the shafts to be in absolute perfect alignment to avoid tight spots and binding over the entire travel of the slide. Otherwise expensive alignment devices on the shafts are incorporated or extremely accurate machining methods are required, both of which would put the product price out of the range of the intended market.

Abstract: This tool is for performing precise machine operations on boiler tube ends, while the tubes are in place in the boiler, and it consists primarily of a hand-held housing, including therein a main gear and pinion gear, designed specifically for strength and long life, the combination serving to rotate a cutting tool holder, having a multiple number of cutting blades. It further includes a self-contained air motor, for driving the cutting tool holder, so as to mill the outside diameters of the boiler tubes, and the tool also includes a collet and rod secured to its center shaft, for locking the tool in a boiler tube.

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 apparatus for drilling matching dowel holes in at least two companion workpieces includes a frame with a top surface and a drilling mechanism driven by a motor. The drilling mechanism is slidably attached to the top surface of the frame and movable along a first drilling axis substantially parallel to the top surface. A centering mechanism automatically centers the workpieces with respect to the first axis by movement along a second axis. A positioning mechanism is rigidly attached to the centering mechanism and positions the centering mechanism such that each of the workpieces is positioned in at least two dowel hole drilling positions along the first drilling axis. The positioning mechanism includes spaced-apart first and second stop members which define first and second dowel hole drilling positions. A stop engaging member is positioned movably between the first and second stop members and rigidly connects the positioning mechanism with the centering mechanism.

Abstract: A machining center convertible between micro and macro machining operations with elimination of reactive spring back infeed pressures in the macro machining mode.

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 frame structure supports a work surface above which there is provided an elongated head number supporting a series of drills. A torque tube having an axis parallel to and spaced from a line passing through the series of drills is mounted to the frame structure for rotation about its axis. The drill head member is coupled to the torque tube such that rotation of the torque tube initially swings the head member in an arc and thereafter urges the head member through a lost motion coupling arrangement against a pair of spaced parallel guide rails, secured to the frame structure normal to the work surface so that the remaining travel of the drill head is rectilinear. The stiffness of the torque tube assures that one end of the elongated drill head will not move ahead or drop behind the other end so that all holes are drilled simultaneously.

Abstract: An improved drilling machine for cutting holes for knobs and latches in metal-clad doors comprises a supporting framework for the door and a hollow drill arranged to be moved upward from the underside of the door to cut the knob opening. The drill is hollow in construction and is supported on a drive shaft by a plurality of support members spaced a sufficient distance apart to effect an easy discharge of the core which is cut and drops through the center of the hollow drill bit or cutter. In addition, the drill bit or cutter, which is hollow in construction, has the individual cutting teeth cut at an angle such that the innermost part of the cut is completed through the metal cladding on the door before the cutter begins to cut the wooden portion thereof.

Abstract: A drilling machine for drilling holes in plaster casts or models has a frame which supports a stationary drilling platform having an opening therethrough. A motor housing is positioned below the drilling platform and is vertically movable between a rest and a drilling position on two laterally disposed top guide shafts and a centrally disposed bottom guide pin. A motor is mounted in the housing and supports a drill chuck and drill bit which penetrates through the opening to drill a hole in a cast or model on the drilling platform when the housing is moved upwardly to its drilling position. A U-shaped handle pivotally mounted on the frame and engageable with the housing permits manual raising of the housing. Alternately, a pneumatic system is described which includes a piston arrangement for raising the housing to the drilling position independently of the position of the handle. During pneumatic operation, the handle may be locked in its rest position.