A holding apparatus for holding a workpiece, which has a round and/or tubular cross section and is to be machined, in such a way that, in the held state, the workpiece can be rotated in relation to the holding apparatus, having at least two clamping arms, which are mounted in a pivotable manner on a base part and by means of which a clamping force can be exerted onto the workpiece, and having an adjustment mechanism for the clamping arms. Provision is made for the adjustment mechanism to have at least two drivers which are guided in a straight line, it being possible for the clamping arms to be pivoted or the clamping arms being pivoted toward one another by virtue of the movement of the drivers, wherein the drivers are arranged one behind the other as seen transversely in relation to the direction of movement of the drivers.

A woodworking vice including a frame, the frame has a clamp assembly and a connection rod matching with the assembly, and a front end of the rod is hinged to the frame. A rear end of the rod is provided with an extending frame extending upwardly, a front end of a locking member is hinged to an upper end of the extending frame, and a middle portion of a rocker is hinged to the upper end of the extending frame and is located below the locking member. The locking member is provided with a cooperation hole, and the locking member is equipped with a torsion spring making the locking member have a tendency of rotating clockwise. A rear portion of the frame is provided with a locking rod extending downwardly, the rod passes through the cooperation hole, and a rear end of the rocker is matched with the locking member.

A straight edge bar clamp spreader comprises a straight edge bar, an inner channel portion, parallel channel portions, and two-way bosses or divots, a clamp, and a clamp-spreader. The inner channel portion is provided along an elongated central region of the bottom surface of the straight edge bar with a constant cross-section. The parallel channel portions are provided along two elongated parallel regions of the top surface of the straight edge bar. The two-way bosses or divots are provided across and on an inner surface of the inner channel portion of the bottom surface and an outer surface of the top surface and configured to define the predetermined stopping positions for two-way movements along the bottom surface or the top surface. The clamp is installed in the inner channel portion of the bottom surface. The clamp-spreader is installed in the pair of parallel channel portions of the top surface.

A clamping apparatus includes a spindle body and a nut element to be screwed together for decreasing a spacing between first and second clamping elements to clamp an object disposed therebetween. The nut element has roller bodies with a defined roller engagement structure axially rotatably secured on a receiving body of the nut element and distributed in circumferential direction. A plurality of engagement regions distributed and/or spaced apart on the spindle body each have one spindle body engagement structure. The roller engagement structures of the roller bodies engage or can engage the spindle body engagement structures of the spindle body. The nut element can be screwed to the spindle body by the mutually engaged engagement structures of the spindle body and of the roller bodies, in particular with rolling of the roller bodies on the spindle body. An apparatus and a vise having the clamping apparatus are also provided.

A screw assembly (1) for a clamping device (4) comprises: a screw (2; 2) with a thread (20) having a thread axis (A) and a handle (3; 3) having a thread section (311) constituting a nut, wherein the screw (2; 2) and the handle (3; 3) are fixed together as a screw-nut assembly, wherein at least one of the thread section (311) of the handle (3; 3) and the thread (20) of the screw (2; 2) is formed at least partially with a geometry varying along the thread axis (A) such that the screw (2, 2) and the handle (3, 3) are engaged by helicoidal wedging.

A clamp release mechanism is provided. The clamp includes a body, a shaft slideably coupled to the body, a fixed jaw, and a moveable jaw coupled to the shaft. A locking component actuates between a locked position and an unlocked position. When in the locked position, the locking component biases the shaft to remain stationary with respect to the body. The clamp includes a securing component pivotally coupled to the locking component, and a biasing element that biases the securing components towards the shaft.

A woodworking vice including a frame, the frame has a clamp assembly and a connection rod matching with the assembly, and a front end of the rod is hinged to the frame. A rear end of the rod is provided with an extending frame extending upwardly, a front end of a locking member is hinged to an upper end of the extending frame, and a middle portion of a rocker is hinged to the upper end of the extending frame and is located below the locking member. The locking member is provided with a cooperation hole, and the locking member is equipped with a torsion spring making the locking member have a tendency of rotating clockwise. A rear portion of the frame is provided with a locking rod extending downwardly, the rod passes through the cooperation hole, and a rear end of the rocker is matched with the locking member.

An improved floating jaw assembly to a machinist vise assembly capable of holding a plurality of individual workpieces, the vise assembly generally including a base with a way or ways, a fixed jaw mounted on the ways, at least one movable jaw slidably mounted on the ways to move toward and away from the fixed jaw on a longitudinal axis in such a manner that at least one workpiece can be securely held between the fixed jaw and the at least one movable jaw, and a mechanism for moving the movable jaw toward and away from the fixed jaw to clamp and unclamp workpieces. The floating jaw assembly includes at least one floating jaw plate attached to the vise assembly with means for adjustable movement of the floating jaw plate(s) along the longitudinal axis of the vise assembly and for articulated movement of the floating jaw plate(s) in a plane substantially parallel to the base of the vise assembly and about an axis perpendicular to the longitudinal axis of the vise assembly so that the floating jaw plates can, in cooperation with adjoining jaws or plates, adjust to and securely hold workpieces. In addition, the floating jaw assembly includes a means of forcing the at least one floating jaw plate downward and securely against the ways of the vise assembly.

This disclosure describes systems, methods, and apparatus for a quick-release adapter between two tripod/bipod/monopod interfaces, wherein a clamping side of the adapter is configured to clamp onto two different types of interfaces or rails such as Arca and Picatinny/Weaver/NATO.

A clamp release mechanism is provided. The clamp includes a body, a shaft slideably coupled to the body, a fixed jaw, and a moveable jaw coupled to the shaft. A locking component actuates between a locked position and an unlocked position. When in the locked position, the locking component biases the shaft to remain stationary with respect to the body. The clamp includes a securing component pivotally coupled to the locking component, and a biasing element that biases the securing components towards the shaft.