Abstract: A F-clamp contains: a first clamping arm, a second clamping arm, a connection rod, and a locking mechanism. The first clamping arm includes an opening configured to accommodate and rotatably connect with the connection rod. A first side of the second clamping arm is fitted with the connection rod, and a distance between the first clamping arm and the second clamping arm changes when the second clamping arm slides along the connection rod. The locking mechanism includes a screw element screwing with a first side of the first clamping arm and abutting against the connection rod, and a contacting position of the screw element and the connection rod is lower than a rotatable connection position of the first clamping arm and the connection rod. The locking mechanism includes a rotary lever exposing outside the first side of the first clamping arm adjacent to the opening.

Abstract: A switch structure for pliers contains: a first operation part, a second operation part, a first spring, a fastener, and a limitation member. The first operation part is rotatably connected with the second operation part so as to form a first grip, a second grip, a first cutting plier, and a second cutting plier. The first spring is defined between the first grip and the second grip, and the first grip has a notch. The fastener is rotatably connected with the first grip and includes a hook and a coupling extension. The limitation member partially extends out of the notch and movably fits on the coupling segment, and the limitation member includes a wide-diameter section for retaining with the notch and includes a narrow-diameter section for removing the limitation member from the fastener, wherein the second grip has a fixing post configured to retain with the hook.

Abstract: A quick release structure for a woodworking clamp, which has a clamp body slidingly connected to the transverse rod, and the securing chuck having a securing rod disposed through a securing hole of the transverse rod. One side of the securing chuck is formed with an accommodating portion, both sides of the accommodating portion are connected to a quick release element, a positioning shaft respectively is disposed on the quick release element, the positioning shaft is placed through the shaft aperture; an outer surface of the quick release element is provided with a pressing portion. When the quick release element is connected into the accommodating portion, by compressing the elastic element, the securing rod is driven to release from the securing hole. When the pressing portion is not pressed, the elastic element bounces back to retract the quick release element to secure the securing chuck onto the transverse rod.

Abstract: A fixture includes an elongated rod, a first jaw and a second jaw. The first jaw and the second jaw are assembled with the elongated rod. The second jaw has a pivotal portion and a grip. A trigger is connected outside the pivotal portion. A front chamber is formed in the pivotal portion for receiving a plurality of clasping pieces and a restoring spring penetrated by the elongated rod. The restoring spring pushes the clasping pieces to synchronously drive a push rod connected to the trigger. Each of the clasping pieces is formed with a groove facing the restoring spring. The restoring spring is formed with a guiding section bent toward the clasping pieces. The guiding section is disposed in the groove to guide the second jaw to advance smoothly.

Abstract: Tin snips includes two cutting blades intersecting each other for cutting and two handles for activating the cutting of the two cutting blades. A safety device is disposed in the tin snips for preventing the two cutting blades from opening. The safety device includes a protrusion extending from an edge of one of the handles, a recess provided in an edge of the handle having the protrusion, and a buckling element connected to the other of the handles. The buckling element includes two movable portions rotatable to cover a position where the two handles are drawn to a closed position, an engaging portion disposed between the two movable portions to cross the protrusion to engage into the recess when the movable portions rotate, and a restricting portion connected between the two movable portions and the engaging portion.

Abstract: A release structure for a fixture contains: a support assembly including a first support arm, a second support arm, and a connecting rod; the connecting rod being inserted through the first support arm and the second support arm, such that a clamping space forms between the first support arm and the second support arm, and the first support arm having an abutting face so as to abut against the wooden workpiece; a force mechanism including a screw post screwing with the second support arm and a forcing post fitted with and rotating relative to the screw post. The screw post has a first inclined face to correspond to the forcing post and has a clamp head to mate with the wooden workpiece. The forcing post has a resilient element and a stop block. The stop block has a second inclined face to mesh with the first inclined face.

Abstract: The invention provides a safety device for tin snips. The tin snips includes two cutting knifes intersecting each other for snipping and two handles for activating the snipping of the two cutting knifes. The safety device is disposed in the tin snips for preventing the two cutting knifes from opening. The safety device includes: a protrusion protruding from an edge of one of the handles, a recess provided in an edge of the handle having the protrusion, and a buckling element connected to the other of the handles. The buckling element includes: two movable portions rotatable to cover a position where the two handles are drawn close, an engaging portion disposed between the two movable portions to cross the protrusion to be engaged into the recess when the movable portions rotate, and a restricting portion connected between the two movable portions and the engaging portion.

Abstract: A quick release structure for a woodworking clamp, which has a clamp body slidingly connected to the transverse rod, and the securing chuck having a securing rod disposed through a securing hole of the transverse rod. One side of the securing chuck is formed with an accommodating portion, both sides of the accommodating portion are connected to a quick release element, a positioning shaft respectively is disposed on the quick release element, the positioning shaft is placed through the shaft aperture; an outer surface of the quick release element is provided with a pressing portion. When the quick release element is connected into the accommodating portion, by compressing the elastic element, the securing rod is driven to release from the securing hole. When the pressing portion is not pressed, the elastic element bounces back to retract the quick release element to secure the securing chuck onto the transverse rod.

Abstract: The present invention provides an advancing mechanism for a fixture. The fixture includes an elongated rod, a first jaw and a second jaw. The first jaw and the second jaw are assembled with the elongated rod. The second jaw has a pivotal portion and a grip. A trigger is connected outside the pivotal portion. A front chamber is formed in the pivotal portion for receiving a plurality of clasping pieces and a restoring spring penetrated by the elongated rod. The restoring spring pushes the clasping pieces to synchronously drive a push rod connected to the trigger. Each of the clasping pieces is formed with a groove facing the restoring spring. The restoring spring is formed with a guiding section bent toward the clasping pieces. The guiding section is disposed in the groove to guide the second jaw to advance smoothly.

Abstract: A quick release structure of a woodworking clamp includes a clamp body, a transverse rod and a fixed chuck. The clamp body has a movable chuck and a trigger for activating the sliding of the clamp body along the transverse rod. A fixing rod passes through a fixing hole to thereby fix the fixed chuck to the transverse rod. One end of the fixing rod has two positioning portions. The fixed chuck has an accommodating portion. Both sides of the accommodating portion have a pivoting member respectively for pivotally connecting to a quick release element. The outer surface of the quick release element has a pressing portion having elongate holes on its two opposite side walls for allowing the positioning portions of the fixing rod to be engaged therein. By this structure, the fixed chuck can be detached from or assembled with the movable chuck easily.

Abstract: An apparatus is disclosed for connecting a bar of a vise to a bar of another vise. The apparatus includes a sheath and two fastening units. The sheath includes two cavities each axially defined in an end thereof and two apertures defined therein transversely and each in communication with a related one of the cavities. Each of the fastening units can be inserted in a related one of the apertures of the sheath and an aperture defined in the bar of a related one of the vises, thus connecting the bars to each other.

Abstract: A clamp includes two handles pivotally connected to each other, a jaw pivotally connected to a short section of each of the handles and a device for positioning of the handles relative to each other. The positioning device includes a cylinder pivotally connected to a long section of one of the handles, a rack pivotally connected to a long section of the other handle and movably inserted in the cylinder, a detent pivotally connected to the cylinder for engagement with the rack to position the handles relative to each other, a lever comprising a first section pivotally connected to the cylinder and a second section operable to cause the first section of the lever to pivot the detent, and a spring compressed between the cylinder and the second section of the lever, thus tending to cause the first section of the lever to pivot the detent towards the rack.

Abstract: A bar clamp includes a slide bar having forward ratchet teeth; first and second moveable jaws slidably put on the slide bar; a slotted trigger handle; first and second linkages at opposite sides of the slide bar in a cavity of the second moveable jaw, each linkage comprising first, second, and third links wherein one ends of the links are pivotably secured together, and the other ends thereof are pivotably secured to the second moveable jaw, the trigger handle, and the slide bar respectively; a release lever fastened in the slot and comprising a well at one end, a trigger at the other end, and a resilient member interconnecting the slot and the bottom of the trigger; and a pivotal pawl comprising pawl teeth at one end being in mesh with one end of the ratchet teeth, and a projection at the other end being moveably received in the well.

Abstract: A pair of locking pliers includes a first handle having a holed wall; a second handle pivotably secured to the first handle; a multi-sided link pivotably secured to a jaw of the second handle and including a shank passed through the wall; an L-shaped lever pivotably secured to the first handle and including a first portion disposed rearward of the wall, a projected second portion between the handles, and a multi sided aperture through the first portion with a rear end of the link passed through; and a spring put on the link and biased between the wall and the first portion. The link is locked in the aperture by disposing the first portion obliquely about the link. Pivoting the lever will compress the spring, unlock the pliers by disposing the link perpendicularly to the first portion, and pivotably push the first and second handles away from each other.