Knives, handles for knives, and a method for making a knife are disclosed. In one example, a knife comprises a handle that includes a flat top surface, two upper chamfers, a flat bottom surface, and two curving sides. The top surface, the two chamfers, bottom surface, and two sides form a six-sided cross section shape. The width of the handle further varies along its length. A blade fastened to the handle comprises a tip at a distal end and a pinch radius configured to accommodate a user's finger. A spine is continuous with the handle's top surface and tapers from the handle to the tip. A cutting edge tapers along the length of the blade from the pinch radius to the tip. A bolster is between the handle and the blade and comprises a six-sided cross section shape that substantially matches the shape of the handle.

Knives, handles for knives, and a method for making a knife are disclosed. In one example, a knife comprises a handle that includes a flat top surface, two upper chamfers, a flat bottom surface, and two curving sides. The top surface, the two chamfers, bottom surface, and two sides form a six-sided cross section shape. The width of the handle further varies along its length. A blade fastened to the handle comprises a tip at a distal end and a pinch radius configured to accommodate a user's finger. A spine is continuous with the handle's top surface and tapers from the handle to the tip. A cutting edge tapers along the length of the blade from the pinch radius to the tip. A bolster is between the handle and the blade and comprises a six-sided cross section shape that substantially matches the shape of the handle.

A cutting blade for vegetation is provided for example for use in a straw chopper or rotary mower. The blade includes a first base material and a plurality of hard surface beads of at least two different materials formed on at least one surface of the base material extending up to a cutting edge of the base material wherein the plurality of hard surface beads lie alternately side by side with touching side edges and one contains at least one different material of a different hardness relative to the other so that differential wear rates are created, and a wear profile is controlled. The softer material is burnt away at the edge by the cladding laser to form pockets so that the blade is serrated by the pockets when supplied with additional wear increasing the pockets to maintain the serrations.

A blade cutting device includes a material accommodation section having a plurality of accommodation chambers for accommodating the band-shaped materials used to form blades, in such a manner as to be sorted by type; a band-shaped material machining section having a feed unit for feeding a band-shaped material pulled out from a predetermined accommodation chamber and a cutting unit for cutting the band-shaped material into a predetermined length for forming blades; and a control section for causing the material accommodation section to move so as to locate the predetermined accommodation chamber at a position facing the band-shaped material machining section.

A blade cutting device includes a material accommodation section having a plurality of accommodation chambers for accommodating the band-shaped materials used to form blades, in such a manner as to be sorted by type; a band-shaped material machining section having a feed unit for feeding a band-shaped material pulled out from a predetermined accommodation chamber and a cutting unit for cutting the band-shaped material into a predetermined length for forming blades; and a control section for causing the material accommodation section to move so as to locate the predetermined accommodation chamber at a position facing the band-shaped material machining section.

A method of manufacturing a razor blade by providing a razor blank strip having an edge. The razor blank strip is hardened to a hardness greater than 600HV. A pre-bending zone that is spaced apart from an edge of the razor blank is melted with a laser beam. The pre-bending zone is cooled after melting to form a re-solidification portion. The razor blank strip is segmented into individual blades. The individual blades are bent in the pre-bending zone.

A machine (1) for working a ribbon-shaped element (T1, T2, T2) is described, comprising at least one cutting station (2) crossed by the ribbon-shaped element (T1, T2, T2), guiding means (3, 4) adapted to position and drag the ribbon-shaped element (T1, T2, T2) onto at least one fixed plane (PI) of the cutting station (2) keeping an edge of the ribbon-shaped element (T1, T2, T2) tangent to a fixed point (A1) of the fixed plane (Pi); at least one of the guiding means (3, 4) rests onto an arm (31) free of rotating with respect to a fixed axis (33); the fixed axis (33) is at the same distance with respect to the cutting station (2) and the at least one of the guiding means (3, 4).

A machine (1) for working a ribbon-shaped element (T1, T2, T2) is described, comprising at least one cutting station (2) crossed by the ribbon-shaped element (T1, T2, T2), guiding means (3, 4) adapted to position and drag the ribbon-shaped element (T1, T2, T2) onto at least one fixed plane (PI) of the cutting station (2) keeping an edge of the ribbon-shaped element (T1, T2, T2) tangent to a fixed point (A1) of the fixed plane (Pi); at least one of the guiding means (3, 4) rests onto an arm (31) free of rotating with respect to a fixed axis (33); the fixed axis (33) is at the same distance with respect to the cutting station (2) and the at least one of the guiding means (3, 4).

Knives, handles for knives, and a method for making a knife are disclosed. In one example, a knife comprises a handle that includes a flat top surface, two upper chamfers, a flat bottom surface, and two curving sides. The top surface, the two chamfers, bottom surface, and two sides form a six-sided cross section shape. The width of the handle further varies along its length. A blade fastened to the handle comprises a tip at a distal end and a pinch radius configured to accommodate a user's finger. A spine is continuous with the handle's top surface and tapers from the handle to the tip. A cutting edge tapers along the length of the blade from the pinch radius to the tip. A bolster is between the handle and the blade and comprises a six-sided cross section shape that substantially matches the shape of the handle.

Knives, handles for knives, and a method for making a knife are disclosed. In one example, a knife comprises a handle that includes a flat top surface, two upper chamfers, a flat bottom surface, and two curving sides. The top surface, the two chamfers, bottom surface, and two sides form a six-sided cross section shape. The width of the handle further varies along its length. A blade fastened to the handle comprises a tip at a distal end and a pinch radius configured to accommodate a user's finger. A spine is continuous with the handle's top surface and tapers from the handle to the tip. A cutting edge tapers along the length of the blade from the pinch radius to the tip. A bolster is between the handle and the blade and comprises a six-sided cross section shape that substantially matches the shape of the handle.