Abstract: The present invention discloses a one-hand handled riveter, which includes a housing with a left handle on the bottom, and a right handle. The mentioned left handle and right handle are all covered by a handle cover. The mentioned housing is installed with a rivet head and the rivet head is equipped with a pull rod on the rear end. The right handle is connected to the pull rob by the top end. Both sides of the top end of the right handle, are equipped with a support arm. The support arms are connected with the pull rod through a positioning shaft by the top end, and the two support arms are connected to a connecting rod through a pin shaft by the bottom end. And a connecting shaft is arranged to the end of the two connecting rod far away from the support arm. Two L-shaped connecting pieces are respectively connected to two ends of the connecting shaft. A connecting hole is arranged to the front and rear ends of the L-shaped connecting piece, and the connecting shaft passes one of the holes.

Abstract: A work-piece support member forming part of a spindle liner for use within the hollow spindle of a turning machine comprising: a disc dimensioned to fit closely within the hollow spindle, having a central aperture (A) sized to accept a work-piece; holding at least one helical spring (20) positioned adjacent to the aperture (A); such that in use the axis of said spring is held perpendicular to the axis of said work-piece such that part of the side walls of said spring or springs (20) abut against said work-piece and thereby firmly support said work-piece as it rotates with the hollow spindle about the axis of said hollow spindle.

Abstract: A force transmission unit that has a rope, particularly a wire rope, and a device for introducing a force into the rope, that includes a sleeve enclosing the rope and connected to the rope under deformation. The force transmission unit has a connecting member which is arranged between the sleeve and the rope and formed from a material that has a lower strength than the materials from which the sleeve and the outer strands of the rope are formed and which preferably has a hollow cylindrical shape.

Abstract: A drilling system for drilling vertical holes in a mine roof includes a chuck configured to be driven in rotation by a motorized drill head. The chuck is cylindrical has a bore having a first polygonal inside perimeter. A drill member has an elongated hollow body with a cross section defining a circular outside perimeter over most of its length and a constant, second polygonal inside perimeter along substantially the entire length of the drill member. The drill member has at least one end region having a first polygonal outside perimeter that is sized to fit into the first polygonal inside perimeter to rotationally engage the drill member with the chuck. Drill bits having a bit fixture having a cross section with a second polygonal outside perimeter are sized and configured to fit snugly inside the second polygonal inside perimeter to be mounted to the drill member opposite the chuck.

Abstract: A tool holding system for a rotary power tool is configured to clamp around a working tool when the working tool is inserted in the tool holding system. The tool holding system includes a sleeve having a frustroconical inner surface portion, a collet having frustoconical outer surface portion complementary to the inner surface portion, a spring mount operably connected to a motor for rotation by the motor, and a spring. The spring includes a first end portion operably connected to the collet to bias the collet toward a first position whereat the outer surface portion engages the inner surface portion, and a second end portion rotationally fixed with respect to the spring mount.

Abstract: The invention relates to a clamping device with a base body (2) which comprises a central receptacle (5) for a component or tool to be clamped, in the base body (2) at least one groove (6) being formed which is open to a face side of the base body (2), and with at least one clamping wedge (9b) which can be pressed axially into the groove (6) from the open face side of the latter to radially deform an inner wall section (7) lying between the groove (6) and the receptacle, which is characterised in that the wall (10) which defines the groove (6) on the outside is designed to be elastic over at least an axial partial section such that it is elastically deformed to the outside when the at least one clamping wedge (9b) is pressed into the groove (6).

Abstract: A device for coupling two parts includes a first part having a cylindrical adapting journal and a radial flat surface which limits the adapting journal by the base thereof and being radially protruded, and a second part having a receiving sleeve with a cylindrical internal surface. A clamping device, during clamping, enables the adapting journal to be inserted into the receiving sleeve and to be pressed thereto between the flat surface and a front surface. In order to guarantee an exact centering of the parts with the aid of simple means, the inventive receiving sleeve is provided with a lower conical part diverging from the internal cylindrical surface towards the front surface and the adapting journal is provided with an elastically deformable centering ring which is arranged at the level of the base and is provided with an external conical part complementary to the lower conical part.

Abstract: A locating means (13) adapted to be supported from one element (11) for engagement with another element to retain the two elements in engagement with each other, the locating means comprising a lug (39) to be displaceable between an extended position at which it extends from the locating means and a retracted position at which it is located inward of the extended position, a driving member (29) slidably supported from the one element the lug and driver having at least two opposed faces, the other element having an abutment which is intended in use to be engaged by the lug when the lug is in the extended position and the two elements are in engagement with each other in order to retain the elements in said engagement with each other, the opposed faces being configured such that movement of the driving member relative to the lug causes the displacement of the lug.

Abstract: A chuck for a photoresist spin coater has a bracket and a disk. The bracket is electrically conductive. The disk is mounted on the base, holds a glass substrate and is electrically conductive. Therefore, The disk allows static electricity on the disk to discharge to protect the glass substrate from being damaged by the static electricity when the glass substrate removes from the chuck.

Abstract: A conventional ball lock mechanism has been replaced with a wedge adapted to lock a tool, such as a punch, forming tool or die bushing in a retainer block in which the tool can be accurately positioned relative to the retainer block. The tool is released by moving the wedge away from the retainer block. The inclined surface of the wedge may be inclined upward or downward at an acute angle to the vertical, or the wedge may have both upwardly and downwardly inclined surfaces. The upper portion of the tool is preferably non-circular and is held within a tool cavity formed when the wedge is disposed in the retainer block. One surface of the wedge (its tool-mating surface) is adapted to correspond to the surface of the tool in contact with the wedge. The assembly of wedge slidably disposed within the retainer block is preferably used with a hardened backing plate rather than being secured directly to the die shoe.

Abstract: The present invention describes an improved collet grip for holding tensile bars during testing. The collet includes a 90.degree. concave surface to match the machined tensile bar thereby improving the gripping action. The collet also has a taper on the inside diameter to compensate for any allowable taper in the machining process.

Abstract: The device includes a chuck designed to be secured to a working tool and which has a front cavity for receiving an end of a drilling rod and a gripping device for fastening the end of the rod in this cavity. The gripping device is actuated by pneumatic or hydraulic pistons, sliding in a cylindrical chamber closed at the rear by a plug. In order to avoid rapid wear of this plug, a spring is arranged between the said plug and the adjacent face of the piston, the spring being strong enough to keep the piston away from the plug.

Abstract: The invention relates to a clamping device used for making up or breaking apart joints of drill pipe, drill collars and the like in mouse hole pipe during oil drilling operation. A clamping means of the device firstly clamps the drill pipe therebetween during its moving down and centripetally simultaneously by the self-weight of drill pipe to be clamped, then tightly clamps the drill pipe with a force generated by rollers' moving inwardly to the center of the device along the concavity of the turning plate with the rotation of a kelly. It can be used instead of a back tong when making-up joint in mouse hole pipe with a tong.

Abstract: A wire gripper (48) includes a housing (50,52,56) that defines a chamber (62) which has sidewalls (64) that taper in an axial direction. Jaws (66) are closely and slidably received into chamber (62). Axial spring (74) biases jaws (66) axially outwardly relative to chamber (62). Radial springs (78) bias jaws (66) toward sidewalls (64). A double-acting cylinder (94) moves housing (50,52,56) axially outwardly to tighten jaws (66) around a wire (200), and axially inwardly to move jaws (66) against jaw stop (88) to open jaws (66). Preferably, axial movement of wire (200) pulls pivoting blades (6,8) closed. Gripper (48) may be modified to cut or punch wire (200) rather than grip it.

Abstract: Method and apparatus for suspending a seed crystal over a fixed crucible containing a melt from a rotary and axially operable vertically disposed drive adaptor comprising the steps of forming a tubular receptacle adapted to be detachably secured at its upper end coaxially to the adapter, and having an internal bore formed therein with an internal step near its lower end for supporting the seed. The seed is formed in the shape of a cylinder of a diameter to pass axially through the stepped bore of the receptacle and having its upper end conically tapered downwardly and inwardly from the upper end thereof. A split sleeve is formed to be receivable downwardly within the internal bore of the tubular receptacle except as limited by the internal steps of the bore of the receptacle. The sleeve has an internal conical taper complimentary to the taper of the upper end of the seed about which it is disposed before insertion of the seed and sleeve within the bore of the receptacle.

Abstract: The drill spindle of a deep well drilling machine has a sleeve-like extension with a conical internal surface which is complementary to conical external surfaces on an annulus of claws forming part of a clamping device which is inserted into the extension and has an axial passage for the shank of a rotary tool. A set of dished springs normally urges a ring against a conical end face of the clamping device whereby the latter urges its claws against the internal surface of the extension and the claws transmit torque from the spindle to the shank of the tool. If the transmission of torque is to be terminated, the piston of a fluid-operated motor is caused to shift the ring against the opposition of the dished springs whereby the claws relax the force with which they engage the shank and the latter can be extracted from the passage of the clamping device.

Abstract: This electric tooth brush holder includes a cylindrical handle portion, and a motor, a drive unit and a cylindrical attachment disposed within said cylindrical handle portion, wherein said attachment is designed to reciprocate within the cylindrical handle portion through said drive unit by the action of said motor and further is provided on its top with a brush holding ring which has been disposed to stand erect normally and permitted to oscillate in the vertical direction.

Abstract: The present surgical tool uses high frequency impulses to replace rotating or oscillating members in cutting through or inserting materials into bone. One embodiment comprises a chisel which uses high frequency impulses to remove bone or other hard material. Because of the high forces developed, a novel holder for the chisel to the tool is disclosed. Another embodiment is a wire driver which uses high frequency impulses to drive wire into bone or other tissue. A novel holder for the wire is disclosed which allows wire to be pulled from the tool so that it can be inserted into the bone but prevents wire from slipping back into the tool during the driving operation. The chisel and the wire are driven by a novel pneumatic impulse motor. The motor includes a piston hammer which is mounted in a chamber, and air ports at either end of the chamber alternately direct air to one side of the piston hammer and to the other side of the piston hammer to drive it along the chamber.

Abstract: A punch and retainer assembly wherein the punch has a flattened surface at the upper end of the side wall thereof and a radially inwardly extending recess directly below the flattened side wall portion. The punch retainer includes a vertically movable latch adapted to engage within the recess on the shank of the punch and retain the punch within the retainer block. Means are provided for limiting vertical movement of the latch so that the punch can be inserted into the retainer only when the flattened surface thereof is aligned parallel with the pivot axis of the latch.