Abstract: A machine tool arbor for holding a rotating machine part or workpiece is fitted with an actuator member at a back or distal end of an arbor main body for tool-less chucking and unchucking of a machine part or workpiece at a front or proximate end of the arbor main body. An actuator ring or knob is mounted at the back end of the arbor main body which, when rotated in one direction, causes an pusher member (collet pusher part, hydraulic piston) to move in such a manner as to displace a chuck member (inclined collet, flex collet, expansion ring) and release the machine part or workpiece that is chucked. When rotated in the opposite direction, the actuator knob causes the actuator member to move in an opposite manner as to fix the chuck member in a position to firmly hold the machine part or workpiece to be chucked.

Abstract: The drill bit comprises a cutting blade formed at one end of a shank. The cutting blade has a pair of cutting shoulders that extend inwardly from the outer sides of the blade toward the bit axis. A tip having converging sides that create a point extends from the shoulders. The cutting edge of each shoulder is beveled with respect to the plane of the face of the blade. A flute is provided on the leading portion of each blade face adjacent the cutting edges. Each flute is a smooth curve that creates a substantially uninterrupted recess on each face of the blade that facilitates chip removal, increases the drill rate and lowers the power required to drill a hole. A non-stick coating may be applied to the blade to further facilitate chip removal.

Abstract: The boring tool having a basic body (2) in which a tool bit (27) is arranged which has a cutting edge (29) at a front end (27b). The basic body (2) has an opening (3) in which the tool bit (27) is pivotably mounted. Setting means (7) serve to set the pivoted position of the tool bit (27) relative to the basic body (2). Means (16) serve to fix the tool bit (27) in the set pivoted position. The tool bit (27) is pivotable about a pivot point (P) which is essentially neutral in terms of unbalance. The tool bit (27) is preferably connected at a rear end (27a) to a radially adjustable slide (7). The slide (7) can be finely adjusted radially, for example with a micrometer screw (9).

Abstract: A working machine includes a blade seat movable relative to a sheet plate, and a safety protective device mounted on the blade seat to cover the blades of the blade seat and including at least one swing member pivotally mounted on the blade seat, and a protective board pivotally connected to the at least one swing member. Thus, when any portion of the protective board is pushed by the sheet plate, the whole protective board is driven to pivot relative to the blade seat so that the protective board is moved upward and downward in a whole manner without deflection.

Abstract: The present invention is a chuck having a vacuum groove that is capable of holding a wafer as the chuck rotates on a spindle. As the chuck rotates the air pressure above the center of the wafer is reduced. In order to reduce the bowing of the wafer that can result from this low pressure area above the wafer, the present invention introduces venturi holes in the chuck which reduces the air pressure in the area below the wafer. In order to prevent the air pressure in the area below the wafer from decreasing too far, the present invention uses air inlet holes to balance the affect of the venturi holes in order to substantially balance the air pressure above and below the wafer which results in significantly less bowing of the wafer when compared to conventional systems. The present invention accomplishes this without requiring sensors or other active measuring devices to help reduce the bowing of the wafer.

Abstract: A gun-drill comprises a cutting-head detachably secured to a shank, having a common longitudinal axis and comprising mating peripheral surfaces. A shank coupling portion comprises a forwardly tapering shank fixation surface is formed at a front end of the shank, and a cutting-head coupling portion comprising a forwardly tapering cutting-head fixation surface is formed at a rear end of the cutting-head. Both the shank and the cutting-head coupling portion extend over a peripheral coupling angle ? of more than 180°. The shank and the cutting-head are assembled by positioning the cutting-head leading face in front of the shank trailing face, slidably inserting the cutting-head coupling portion into the shank coupling portion laterally to the axis of rotation A and rotating the cutting-head relative to the shank in a direction opposed to the direction of rotation R so that the cutting-head coupling portion and the shank coupling portion interlock co-axially.

Abstract: An improved pocket-sized book capable of one-handed manipulation. The book has informational pages among which a user may navigate by using only the hand holding the book. The book has finger slots for receiving the fingers of a user and a thumb restraint for securing the thumb and thumb mass to prevent both from interfering with either the turning of the pages or the user's view of the information printed thereon. By placing his or her finger on one of the tabs and providing an upward rotational force on the book, a user is able to open the book to the desired section and view the information printed on the pages therein. A guard attached to the side of the book blocks the lateral movement of the pages so that the pages do not become askew.

Abstract: A system, apparatuses and methods for anchoring are provided. The system includes two-stage drill bit and a method of anchoring into a two-stage hole drilled by the drill bit. The apparatus of the instant invention includes a two-stage drill bit for drilling a pilot hole for a common nail into a material such as concrete, stone, masonry or cementuous or other materials. The method of the instant invention includes the steps of drilling a first hole within a material to which an object is to be anchored, drilling a second hole concentric with the first hole, and placing an anchor within the holes.

Abstract: An apparatus includes a rotatable device, which may be a keyless chuck, a keyless chuck adapter, a collet chuck, a collet adapter, a set screw bit retaining chuck, or a set screw bit retaining adapter. The rotatable device is configured to be mounted to a power tool for rotational driving of the rotatable device. The rotatable device is configured to receive a first bit device detachably mounted in the rotatable device for powering rotational movement of the first bit device. A generally cylindrical mounting section is defined on the rotatable device, which is capable of being rotatably driven by the power tool. The generally cylindrical mounting section includes at least one locking mechanism on it. The generally cylindrical mounting section is adapted for insertion in and engagement with a bit holding attachment.

Abstract: A mailing form for facilitating the mailing of a document is disclosed. The mailing form includes a bottom ply of the mailing form and an interspersed between the first side of the bottom ply (i.e. inner side of the bottom ply) and the second side of the top ply (i.e. inner side of top ply). The mailing form further includes a top ply of the mailing form and a removable portion of the top ply extending over the first side of the top ply. The mailing form further includes a vertical fold line for folding the mailing form after the top ply has been removed, and a horizontal strip of the first side of the bottom ply, the horizontal strip including adhesive that is exposed after the mailing form is folded. The mailing form further includes a horizontal fold line for folding the mailing form that has been folded along the vertical fold line.

Abstract: Pilot drill with coupon retainer and hot tapping machine using the same that positively retains a coupon cut out by a hole saw. The pilot drill bit has a shank having a driving end for attachment to a drill driver and a cutting end having a cutting edge thereon, the cutting edge being sized to drill a hole of selected diameter through a workpiece, and a movable retaining finger mounted on the shank adjacent the cutting edge, the movable retaining finger having a first position fitting within the cutting diameter of the cutting edge and a second, extended position where a portion thereof lies outside the cutting diameter to retain on the drill shank a workpiece through which the drill bit may have drilled.

Abstract: A tool holder is provided that is configured to deliver coolant to a work piece and/or a cutting tool. The tool holder includes a tool mounting aperture for receiving a shank of a cutting tool, and an axially extending central passage for receiving coolant deliver though a spindle of a machine tool. The tool holder additionally includes several coolant passages located around the tool mounting aperture for conveying the coolant from the central passage and distributing the coolant to the work piece and cutting tool. The coolant passages extend substantially parallel to the tool mounting aperture and are slightly radially spaced from the tool mounting aperture.

Abstract: An attachment (10) for use with a power tool (12) which can conveniently convert a rotatable chuck (14) or adapter (78) used with a first bit device (22) to usage with a second bit device (36) and vice versa. Either first or second bit device can be used for drilling, fastener driving or for other operations, however the preferred configuration is use with a first bit device for drilling pilot holes and a second bit device for driving of a fastener into the freshly drilled pilot hole. The attachment (10) is easily detachably securable with respect to any chuck (14) or adapter (78) which has a rotating cylindrical surface (18) with a locking aperture (20) therein. A capping ring (52) may be positioned in an annular slot (42) to retain a resilient member (48) positionable within an annular groove (40) for facilitating biasing of a locking pin (44) into a locking aperture (20) on the rotatably driven cylindrical mounting surface (18).

Abstract: A drill including a chisel edge provided at a tip end portion, a spiral first chip discharging groove and a spiral second chip discharging groove, land portions provided between the first chip discharging groove and the second chip discharging groove, and a cut blade provided at an edge of a rake surface of the first chip discharging groove, characterized in that the first chip discharging groove and the second chip discharging groove are provided asymmetrically with respect to a drill rotational center and a land portion behind the first chip discharging groove is larger than a land portion behind the second chip discharging groove.

Abstract: A production line for carrying out machining and cleaning operations on rectangular frameworks, is provided. Elongate plastic frame members are welded together in a welding machine, thereby forming two rectangular frameworks located one above the other. These are moved to a framework processing machine along separate predetermined paths with the first path being located above the second path. The paths are provided by horizontally extending guide arrangements on the machine which has a power tool for carrying out machining operations, this tool being supported by a transporting mechanism capable of moving the tool both horizontally and vertically. Machining steps are carried out on the two frame works while they are held one above the other. The frameworks are moved to a weld cleaning machine along respective upper and lower paths for further processing operations.

Abstract: A processing cell of automatic machining system configured in that it is easy to decide or change the number of steps and to design, and to reduce the installation cost. The control unit of the processing cell comprises an operation data storing means for storing every position necessary data for operation at each position of the processing cell installed in the machining section of the automatic machining system, and a position designating means for designating the after-installation position. The control unit reads necessary data for operation out of the operation data storing means in accordance with the position designated by the position designating means. Thus, the operation of each cell can be switched in accordance with the position, and the processing cells can be easily changed in position and adjusted in quantity.

Abstract: A tool holder (1) for a rotary hammer which has a tube like tool holder main body (10) having a side wall formed with through holes (11) for receiving corresponding locking bodies (12) and formed with additional through holes (40). The tool holder includes hardened metal driving ribs (46) each located on an insert (42) and the inserts are fitted within the additional through holes (40) so that the ribs extends axially and radially inwardly of the radially inward facing surface of the holder body. The locking bodies (12) are arranged to releaseably engage a corresponding axial closed groove of a tool or bit inserted within the tool holder and the ribs (46) are arranged to releaseably engaging a corresponding axial rearwardly open driving grooves of a tool or bit inserted within the tool holder.

Abstract: A tool chuck may include a chuck body that supports chuck jaws. The chuck body may define a longitudinal axis. A driven gear may be mounted for rotation on the chuck body. The rotational axis of the driven gear may be parallel to the longitudinal axis of the chuck body. A nutating gear may be provided on the chuck body. The nutating gear may be nutatable about the chuck body to rotationally drive the driven gear relative to the chuck body so that the chuck jaws move along the longitudinal axis of the chuck body.

Abstract: An adapter for holding a workpiece to be machined in an accurately located axial position can include a main sleeve having an interior wall defining a passage extending therethrough with at least one inner surface angled inwardly toward a centerline of the passage, a workpiece locator engageable within the passage and supporting a positive axial location stop, an axially and radially moveable collet interposed between the main sleeve and a workpiece to be processed, and a rotatable sleeve engageable with the collet for accurately locating the workpiece to be processed by radially grasping the workpiece to be processed and axially moving the workpiece into engagement with the positive axial location stop.

Abstract: A chuck has an attachment device for attaching the chuck to a machine spindle and a collet with clamping jaws defining an insertion opening at an end of the chuck opposite the attachment device. A sliding sleeve surrounds the clamping jaws and is axially moveable into a clamping position for clamping a machining tool inserted into the insertion opening and into a release position for releasing the tool. Between an inner circumference of the sliding sleeve and an outer circumference of the clamping jaws a contact path conically tapering in an axial direction and counter pressure members that engage positively the contact path are provided. The contact path is positioned at a slant relative to the axial longitudinal center of the collet. The slant angle is so small that under expected operating forces a self-locking action between contact path and counter pressure members is maintained at all times.