One feature pertains to cutters that include a first lever, a second lever having a bottom edge, and a cutting lever having a top edge. A first member rotatably couples the first lever to the second lever, a second member couples the cutting lever to the first lever and/or the second lever, where the second member provides a pivot for the cutting lever to rotate relative to the second lever. A means for rotating the cutting lever relative to the second lever to move the top edge toward or away from the bottom edge when the first lever's first end is moved relative to the second lever's first end is provided, where the first lever, the second lever, and the cutting lever are arranged in a side-by-side configuration such that each has a longitudinal axis that is parallel to each other when the cutters are in a closed position.

A pipe shears includes a base, a ratchet plate pivotally connected to the base, a cutter blade detachably mounted to the ratchet plate, a positioning member mounted between an elongated hole of the ratchet plate and a positioning groove of the cutter blade, and a push rod inserted in the base and stopped against a stop member. When the push rod is not pushed, it is positioned in the elongated hole of the ratchet plate and stopped against the positioning member to force the positioning member into engagement with the positioning groove of the cutter blade, and the cutter blade is not detachable at this time. When the push rod is pushed, the stop member is moved out of the elongated hole of the ratchet plate to unlock the positioning member from the positioning groove of the cutter blade for allowing removal of the cutter blade.

A pipe shears includes a base, a ratchet plate pivotally connected to the base, a cutter blade detachably mounted to the ratchet plate, a positioning member mounted between an elongated hole of the ratchet plate and a positioning groove of the cutter blade, and a push rod inserted in the base and stopped against a stop member. When the push rod is not pushed, it is positioned in the elongated hole of the ratchet plate and stopped against the positioning member to force the positioning member into engagement with the positioning groove of the cutter blade, and the cutter blade is not detachable at this time. When the push rod is pushed, the stop member is moved out of the elongated hole of the ratchet plate to unlock the positioning member from the positioning groove of the cutter blade for allowing removal of the cutter blade.

The present invention relates to a shearing tool such as scissors, comprising first and second cutting members pivotally coupled with each other, and a linkage pivotally coupled to the first and second cutting members, whereby the linkage and one of the first and second cutting members form together a compound lever mechanism. A force applied by an operator onto the shearing tool increases as an output by the linkage, and the increasing force is conveyed to that cutting member so that the cutting power of the shearing tool increase to allow hard-to-cut materials to be cut manually and easily with less effort from the operator.

A control device of a cutting tool formed by a first component and a second component pivotally connected to each other is pivotally connected to the second component. The control device can be pushed to act on the second component. The cutting tool performs multi-stage or one-time cutting according to the control device being pushed to the required position. Moreover, the first component and the second component are close to or away from each other under control of the control device.

A control device of a cutting tool formed by a first component and a second component pivotally connected to each other is pivotally connected to the second component. The control device can be pushed to act on the second component. The cutting tool performs multi-stage or one-time cutting according to the control device being pushed to the required position. Moreover, the first component and the second component are close to or away from each other under control of the control device.

Pruning shears include a cutting head with a spring-biased blade pivotally connected to a jaw and arranged to sever a workpiece received in a bight formed by the jaw. A drive mechanism is connected to the cutting head and an elongate housing is connected to the drive mechanism. The drive mechanism includes a rotation preventer for preventing rotation of a second pulley in relation to the drive mechanism when a drawing torque is applied to the second pulley. The drawing torque is greater than a threshold torque, resulting in a second pulley being stationary in relation to the drive mechanism and the first pulley rotating in relation to the drive mechanism.

A shears that includes a first cutting blade including a first aperture and a second cutting blade including a second aperture, the second cutting blade pivotally coupled to the first cutting blade at a pivot joint. The shears further includes a first handle operable to pivot the first cutting blade about the pivot joint and a second handle operable to pivot the second cutting blade about the pivot joint. The pivot joint includes a bolt that extends through the first aperture and the second aperture. The bolt includes a head, a shank that extends from the head, and a longitudinal axis that extends centrally through the head and the shank along a length of the shank. The head includes a concave outer surface that extends around the longitudinal axis of the bolt.

A shears that includes a first cutting blade including a first aperture and a second cutting blade including a second aperture, the second cutting blade pivotally coupled to the first cutting blade at a pivot joint. The shears further includes a first handle operable to pivot the first cutting blade about the pivot joint and a second handle operable to pivot the second cutting blade about the pivot joint. The pivot joint includes a bolt that extends through the first aperture and the second aperture. The bolt includes a head, a shank that extends from the head, and a longitudinal axis that extends centrally through the head and the shank along a length of the shank. The head includes a concave outer surface that extends around the longitudinal axis of the bolt.

A hand-operated ratchet cutter with a movable and a fixed handle, wherein the fixed handle forms a first fixed blade, and a movable blade is hinged to an upper end area of the fixed blade, for shearing interaction in a cutting plane with the fixed blade. The movable blade moves in a plane parallel to the cutting plane, and the fixed blade has a first flat side. A fixed jaw with a second flat side (21) facing the first flat side is formed that also extends up to the upper end area of the fixed blade. A passage slot for the movable blade adjusted to the thickness (d) is formed between the first and second flat side, so as to ensure the shearing interaction between the movable and fixed blade even under a load by having the jaw act as a supporting jaw.