The present invention relates to a paper cutter, including a pipe body having a hollow channel, and a cutting tool mounted on the pipe body. The pipe body has a front end, a rear end, and a middle portion provided between the front end and the rear end. The middle portion is provided with a paper feeding gap and two guide inclined surfaces oppositely arranged. The arrangement that the paper feeding gap extends from the front end to the rear end through the guide inclined surfaces does not cause uneven cutting edges or tearing of a paper roll due to bending of edges of paper, such that a good cutting quality is achieved.

A blade assembly, configured safely and efficiently pierce and shear an item. The blade assembly has a bottom member, configured to be joined to an underside of a glove finger with an adhesive. The bottom member further comprises a flat top portion. A block is joined the flat top portion and further comprising a raised portion. A blade is joined to the raised portion. A top member is joined to the bottom member and further comprising a flat portion with an opening. The opening surrounds the blade.

A cold knife holder capable of pushing and pulling operations, includes a main body forming a chamber and a slot, a handle, a detent member, a first spring and a first steel ball. One side of the main body forms a perforation which communicates with the chamber. The handle includes a sleeve, a connecting rod and a grip rod. Both ends of the connecting rod are respectively connected to the sleeve and the grip rod, and the sleeve is pivotally sleeved on the main body, so that the handle is rotated relative to the main body, and the first or second caulking is connected to the perforation, and the detent member is arranged in the chamber. The first steel ball is pivotally embedded in the perforation, so that the detent member drives the first steel ball to be embedded in the first or second caulking, thereby positioning the handle.

A cold knife holder capable of pushing and pulling operations, includes a main body forming a chamber and a slot, a handle, a detent member, a first spring and a first steel ball. One side of the main body forms a perforation which communicates with the chamber. The handle includes a sleeve, a connecting rod and a grip rod. Both ends of the connecting rod are respectively connected to the sleeve and the grip rod, and the sleeve is pivotally sleeved on the main body, so that the handle is rotated relative to the main body, and the first or second caulking is connected to the perforation, and the detent member is arranged in the chamber. The first steel ball is pivotally embedded in the perforation, so that the detent member drives the first steel ball to be embedded in the first or second caulking, thereby positioning the handle.

An adjustable multi-blade knife is disclosed that includes a handle, a plurality of blades, and a blade spacing adjustment mechanism. The blades are oriented in parallel with each other and supported by the handle. The blade spacing adjustment mechanism is operable to cause movement of the second blade relative to the first blade while retaining a substantially parallel orientation with the first blade.

An adjustable multi-blade knife is disclosed that includes a handle, a plurality of blades, and a blade spacing adjustment mechanism. The blades are oriented in parallel with each other and supported by the handle. The blade spacing adjustment mechanism is operable to cause movement of the second blade relative to the first blade while retaining a substantially parallel orientation with the first blade.

A package opening knife has a body part, a blade part, a gripping part that extends in an elongated shape in a prescribed first direction, and a guide part provided with a guide surface that slides in a surface direction of the package in a state of contacting the package to guide movement of the blade part. When a surface direction of the guide is defined as a second direction, the first direction and the second direction become substantially parallel to each other.

A knife having a first body part and a second body part cooperating with one another to allow a blade to be secured thereto, the body parts cooperate with one another such that sliding movement of the first body part relative to the second body part can occur, and a latch arrangement whereby the body parts can be latched against relative sliding movement from a first position towards a second position, the latch arrangement having a resilient member carried by the first body part and cooperable with the second body part to latch the body parts against sliding movement towards the second position, and an opening provided in the second body part through which a tool can be inserted to depress the resilient member and allow such sliding movement to occur.

A knife having a first body part and a second body part cooperating with one another to allow a blade to be secured thereto, the body parts cooperate with one another such that sliding movement of the first body part relative to the second body part can occur, and a latch arrangement whereby the body parts can be latched against relative sliding movement from a first position towards a second position, the latch arrangement having a resilient member carried by the first body part and cooperable with the second body part to latch the body parts against sliding movement towards the second position, and an opening provided in the second body part through which a tool can be inserted to depress the resilient member and allow such sliding movement to occur.

A package opener includes a body having a first half and a second half. One or more blade cartridges are sandwiched between the first half and the second half, the blade cartridges including one or more blades, and for each of the one or more blades, a blade shroud which protects against accidental injury from the blade. The blade shrouds are constructed of a resilient material allowing the blade tip to cut into a material while the sides of the blade remain covered. The blade shroud can include substantially identical guard portions disposed along opposing lateral sides of the blades.