Abstract: An arrangement for supplying coolant to rotating cutting tools (1) for metal machining, in particular boring tools provided with coolant ducts (2,3), includes a coolant ring (4) arranged rotatably on the tool shank and sealed with respect thereto and having a radially projecting coupling piece (6) provided with a radial coolant bore. On a carrier piece (10) there are provided two intermediate parts (12) arranged at a distance from one another, each of which is swingable at one end (12a) with respect to the carrier piece (10) about an axis extending parallel to the boring tool axis (A), is slidable in a plane extending perpendicular to the boring tool axis (A) and can be clamped with respect to the carrier piece (10), and each of which has at its other end (12b) a bore (16) extending parallel to the boring tool axis (A) for a fixing bolt (17) which can be screwed into a stationary machine part (S).

Abstract: Attachments for self-locking or conventional key-operated chucks on hand drills make possible simplified operation thereof. An externally threaded ring carried by the drill surrounding the chuck is internally beveled at its outer end and mates with a threaded nut. A split ring with wedge-shaped cross section is positioned between the nut and the beveled end of the ring so as to clamp the chuck to the ring when the nut is tightened. A cap made of an elastomer attached over the nose of the chuck has in its end a slot or crossed slots which grip a drill bit when it is thrust therethrough.

Abstract: A drill scope comprising a calibrated protractor that can be read directly in terms of angle of tilt of the drill bit and a pivoting spirit level support means with tilt angle marker and bull's-eye bubble level that can be pivoted to a selected angle of tilt and then held in that position during use of the drill. In this manner, when the hand held drill is held such that the bubble reads level, the angle of tilt or inclination of the resulting hole can be readily maintained within one degree. The drill scope can be a U-shaped arm with level that swings over the entire drill housing, a circularly curved surface integrally mounted in the drill housing with a sliding element that holds the level or a calibrated protractor disc with radial support arm and level that attaches to the conventional side handle hole of the drill.

Abstract: Holder especially for a chuck key for a drilling or other machine tool, for which it is necessary to use a chuck key for opening and closing the chuck holding the working tools. The chuck key is attachable to the power cord of such a machine tool in such a way that it remains rotatable although not removable from the machine tool. To achieve this there is provided a locking device (2) mounted on the shaft of the chuck key, which locking device is inserted in a mounting device, which is attached to the power cord.

Abstract: A combined tap and die holder which comprises a housing including a circular recess for receiving a die and two diametrically opposite tubular recesses for receiving two clamping members for clamping a tap. The clamping members are retrated in the tubular recesses when the die is placed in the circular recess.

Abstract: An implement (10) for effecting repairs to a garden hose assembly (30) comprising a central hub element (16) having a plurality of arm elements (17) radially projecting therefrom and bearing a tap unit (12) a die unit (13), a removal unit (14) and an insertion unit (15), wherein the insertion (14) and removal (15) units may both be employed to refurbish the interior of both the male (32) and female (33) hose couplings.

Abstract: The adapter for the torquing tool includes an elongated body having a bore in at least one end to accommodate a driver bit and a coupling means for detachably attaching the body to the tool. A depth adjustment bushing is threadably engaged within said bore, with the bushing being externally threaded to engage the bore. The bushing includes a body section and a shank section. An axial passageway extends through the shank section and an axial slot extending through the wall of the shank in communication with the passageway. A screw extends through a radial threaded opening in the body and into the axial passageway through the slot so when the driver bit is housed within the body section and extends into the passageway, it is held in place by tightening the screw. In a preferred form, the passageway has a hexagonal cross section for mating engagement with a hexagonal end section of the driving bit.

Abstract: A spirit leveling attachment for a power tool which is universally adjustable relative to the tool so as to enable the tool to be located in anyone of a number of selected positions of angularity and maintained in such position by visual reference to the spirit level. A magnetized support member having a partly spherical recess is mounted on the tool. The spirit level is formed with a partly spherical body member which is accommodated in the recess of the magnetized support member, enabling the body member to be magnetically retained in the recess in selected positions of adjustment relative to the support member.

Abstract: A chuck key having a chuck engaging portion attached to an elongated member that is used to apply torque to the chuck engaging portion. The elongated member has a groove along its length disposed to receive and clamp onto an electrical cord placed therein.

Abstract: A holder for taps and dies has an elongated holding portion having sockets for holding dies in fixed position for use, elongated recesses for storage of taps therein, a drive socket for reception of taps thereinto for use, a movable retainer secured over the recesses for selectively retaining the taps in the recesses and releasing the taps individually for engagement with the drive socket, and retention means cooperating with the holding portion, the retainer, and the taps for retention of the taps on the holding portion for preventing loss of the taps from the holder during their aforesaid release for engagement with the drive socket.

Abstract: A chuck key holder for a power tool, such as an electric or pneumatic drill or the like, comprises an elastic member mounted on a part of the power tool such as the handle. The elastic member has an aperture therein adapted to receive a part of the chuck key, the aperture being of such size as securely to retain the chuck key frictionally, and to permit ready removable thereof for use, and easy replacement following use. The end of the aperture into which the chuck key part enters advantageously is defined by a chamfered surface which serves to facilitate entry of the inserted part. The holder is permanent in nature, enables the user to return the chuck key to a definite place following each use, thereby assuring that the key will be available conveniently for the next use.

Abstract: Elongated handle having a threaded spindle for engagement with a threaded aperture in the side of the body of an electric drill and a gear mounted on the same end of the handle for engagement with the geared chuck used with the drill.

Abstract: A keyless chuck gripping device for opening or closing jaws of a chuck of a rotary tool without using a chuck key includes a first portion having a surface extending at least partially around an outer surface of a chuck locking drum. The first portion is attached to a forward housing portion of the rotary tool or the outer surface of the chuck locking drum. A second portion connected to the first portion is urged into frictional or lock engagement with the unattached portion of the rotary tool where manual actuation alters rotational speed of the chuck locking drum relative to the speed of the rotary tool shaft. The second portion maintains the chuck locking drum in a stationary position while the shaft is driven by the motor, enabling the chuck locking drum to turn the chuck jaws in forward or reverse direction.

Abstract: The power tool has a spindle lock member rotating with the output spindle with a blocking member normally rotating with the lock member but capable of being restrained against rotation. The blocking member extends beyond the lock member and is provided with an opening through which the lock pin can project if the blocking member is at rest or rotating slowly but the opening precludes lock pin entry at normal operation speeds. The lock member has a recess of substantial angular embrace so the ends of the recess can be impacted on the lock pin.

Abstract: A portable electric drill is provided with a keyless slidable jaw chuck having three slidable jaws provided with externally extending teeth mounted within a chuck body having three slideways for the chuck jaws and a traverse nut rotatable on the chuck body having internal threads engaged with the chuck jaws, and a locking shell slidable relative to the traverse nut so as to rotate together relative the chuck body. Teeth, lugs or other projections on the rearward annular face of the shell selectively matingly cooperate with teeth, lugs or similar projections provided on the drill housing so that, when the shell is slid rearwardly towards the drill housing the shell and traverse nut are held against rotation relative the drill housing upon actuation of the drill to rotate the chuck body, the chuck jaws will be automatically extended or retracted, depending upon the drill rotation direction, to chuck or unchuck a drill bit or other accessory inserted therebetween.

Abstract: A chuck key as a tubular body extending along an axis and having an axially forwardly directed end formed with an array of teeth centered on the axis. A crosspiece extends diametrically through the body at the end opposite its toothed end. A pin is displaceable axially in the bore of the body between a front position projecting axially forwardly from the body beyond the teeth and in a rear position withdrawn axially backwardly in the body. A spring braced between the pin and the body urges the pin into the front position. An operating member is movable radially relative to the body and has an outer end that projects radially from the body. Interengaging formations on this member and on the pin displace the pin against the force of the spring from the rear to front position on depression of the end of the member radially inwardly. Thus the thumb of the hand grasping the crosspiece can push in the operating member to extend the pin for fitting of the key to a chuck.

Abstract: An operator for a Jacobs chuck has an annular support pivoted on the chuck collar for rocking movement about an axis perpendicular to the chuck axis, a gear tooth on the support between the pivot axis and the chuck ring gear which is selectively engageable with the ring gear teeth so that rocking the support causes the gear tooth to rotate the ring gear, and means permitting manual movement of the gear tooth into and out of engagement with the ring gear teeth. The annular support is counterbalanced so its center of mass is on the chuck axis, and a stabilizer normally maintains the support in a plane perpendicular to said axis.

Abstract: A wire holder for detachably securing an article such as a key for a power drill chuck, to the flexible cord extending from the corresponding power drill, includes a resilient one-piece length of wire with a partial loop formed intermediate the ends thereof and having a pair of legs extending one from each end of the said loop. Preformed indentations are provided at the inner ends of the legs so that when the legs are crossed over one another, the indentations interlock to hold the loop closed around the shaft of the key or article. The distal ends of the legs are partially turned and engage the flexible power cord whereupon they may be closed by pliers or the like to secure same to the cord.

Abstract: A cutting end protector is used in securing one of the cutting ends of a double ended drill bit in a drill chuck. The cutting end protector comprises a body portion contoured to mate with the inner surface of the drill chuck and adapted to receive the drill chuck pin. The body portion has a cutting end receiving face provided with a central recess for receiving the point of the cutting end and a pair of chamfered face portions diverging outwardly and forwardly from the body portion, one on either side of the central recess. The chamfered face portions are slanted in opposing directions for fitting flushly with the cutting edge trailing surfaces of the cutting end.

Abstract: A power tool such as a drill, for example, including a modified Jacobs chuck and incorporating a chuck key permanently mounted in the power tool housing and a main shaft locking device for locking the main shaft when the chuck key is used to manipulate, i.e., open or close, the chuck and spring biasing means for normally retaining the main shaft locking device and the chuck key out of the operating position so that the tool can operate freely.

Abstract: An adapter for use with a commercially available flat wood bit which enables a previously bored hole formed in a work piece to be accurately and easily enlarged. The adapter includes spaced keepers which snugly receive the opposed flats of the bit therebetween, with the pilot bit being centered within a cavity formed within the adapter, so that the adapter is properly aligned respective to the wood bit and to the previously formed hole. The adapter includes a number of cylinders of various outside diameters which enables a single adapter body to be used in conjunction with a number of different size bits which are used to form a number of different diameter holes.

Abstract: Abstract disclosed herein is a combination depth gauge and level for a drill characterized in that a plunger mechanism is attached to the drill by means of a band type clamp. Overlying the plunger, there is provided a ruler capable of sliding within the trackway to extend out beyond the drill and bit so that the depth of a hole to be drilled can be accurately gauged. The plunger mechanism includes a casing having a spring disposed therein and the plunger is biased against the spring and has a terminal portion preferably in the shape of a cross. In use and operation, the plunger is depressed against the surface upon which the drilling is to be done, and therefor the correct angle of the drilled hole can be assured. Once the plunger has been depressed up to the length of the ruler as it has been extended beyond the drill, the depth of the hole thus drilled can be accurately determined and controlled.

Abstract: A chuck key holder is arranged on a power supply means and rotatably carries a chuck key for adjusting the clamping jaws of a chuck on an electrically or pneumatically driven machine provided with the chuck, e.g. a hand-held drilling machine. The holder includes a channel for accommodating the lead and a mounting for the chuck key. The holder consists of a basic structure made up from two identically alike basic parts (11, 12), of which one (11) is turned 180.degree. in relation to the other (12). In either basic part (11, 12) there is formed one half of the channel for the lead (15) and one half of the key mounting (16). Fastening means (21, 22) are arranged to keep the basic parts (11, 12) together.

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: A device to be attached to drills, particularly power drills, for indicating the angular relation of the rotational axis of the drill to a surface being drilled and permitting the drill operator to guide the drill in accurately pointing the axis of the drill bit at any angle up to about 45.degree. out of square, or plumb to about 45.degree. out of plumb, or any combination thereof. Furthermore, the device can be utilized as an angle drilling gauge independently of its attachment to a drill in order to determine the angle between two planar surfaces joined at an angle from square to about 45.degree. right or 45.degree. left out of square.

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 chuck key holder in which a manual force is applied to handles of clamp members on one side of a drill chuck to position a chuck key that is rotatably mounted on a support to which the clamp members are pivoted in properly located spanning engagement with the chuck on its other side. Spring biasing of the clamp members from the closed clamping position about the chuck toward an open position moves ejecting portions of the clamp members against the chuck to automatically withdraw the chuck key once the manual force is released from the handles. Clamping portions of the clamp members are located between the handles and the axes of pivotal connection between the support and the clamp members. Partially circular clamping surfaces of the clamping portions have first ends adjacent the ejecting portions and second ends adjacent stops on the clamp members for limiting the extent of closing movement without the chuck between the clamp members.

Abstract: Chuck key holder for electrically driven, cabled hand-tools with replaceable tools securable in a chuck, said key holder having a first collet-like part for attachment round the cable and, at an angle to it, a second collet-like part for rotatable attachment of the chuck key.

Abstract: A means for holding a drill chuck key in operative position on a drill chuck is provided by a pair of arms that straddle the chuck and include a shape and resilience to ensure that the chuck will be brought into operative position by cam action, and thereafter, held in proper position. That is augmented by a means for detachably securing the chuck key to another part of the drill when it is not in use to adjust the chuck. That function is accomplished with a retaining element associated with the key or with the drill, and which, when associated with the drill, has a shape so that the arms by which the key is fastened to the chuck co-act in the same way with the retaining element as with the chuck.

Abstract: A follower is provided for a conventional flat drill bit which adapts the drill bit to provide a diametrally enlarged bore. The follower generally comprises a cylindrical section having a diametral slot therein in which the blade end of the bit is received. The well-bottom of the diametral slot includes a tapered socket in which the nose of the bit is received, the nose of the bit extending beyond the bottom wall of the cylindrical section. A means is provided for releasably mounting the follower on the drill bit. A bore in the work piece to be drilled is initiated by the nose of the bit extending through the follower thereon. As the nose penetrates into the work piece, the follower diametrally enlarges the bore provided thereby.

Abstract: An improved chuck key and spring pocket for holding the key. The key comprises a sliding cross bar having paddle ends, and the spring pocket cooperates with this cross bar. The pocket opening accepts the key in one orientation only, and then the paddles are used to cam the key tightly into the pocket.

Abstract: Rotary cutting tools normally throw out chips and other particles from the surface or edge being cut. According to this invention, an exhaust hood, arranged to be connected to an exhaust system, having a bristle skirt is mounted to enclose an area about the tool, a strong jet of air from a jet nozzle put through the hood is directed toward the cutting portion of the tool and at the stream of chips being thrown off to disburse all of the chips and particles up into the air stream being exhausted from the hood causing them to become airborne. The air stream entering the hood through the interstices in the skirt and rushing across the hood and out through the exhaust port will so completely capture the airborne chips and particles that none will escape into the general atmosphere of the machine room.

Abstract: This invention provides a drill changing device for a drilling machine in which a collar is provided on the shank of a drill at a predetermined location relative to the tip of the drill, the collar being frictionally gripped by a split sleeve so that the shank projects outwardly from the sleeve, the sleeve being slidable relative to a fixed support and normally biased against a shoulder on the support, allowing overtravel when the collet of a drilling machine engages the collar and receives the shank. The tip of the drill is at a predetermined position relative to the collet when the collet engages the collar so that the drill will effect proper penetration of the workpiece in a drilling operation.

Abstract: A chuck key storage apparatus for use with a drilling machine for conveniently storing a chuck key. The apparatus, and thus the chuck key, is movable between a stored position and a functional position. In the stored position, the chuck key is positioned remote from a chuck of the drilling machine, and in the functional position the chuck key is located to engage the chuck.