Abstract: A paper punch die (125) is disclosed as including a top part (110, 202, 302) and a platform (100, 206, 306) engaged with each other, the platform (100, 206, 306) having an upper major surface (106) and a lower major surface (126, 207, 307), the upper major surface of the platform (100, 206, 306) being in abutment with a lower major surface (118) of the top part (110, 202, 302), and an endless wall (130) with an undulating cutting edge (132) extending away from the lower major surface (126, 207, 307) of the platform (100, 206, 306). There is also disclosed a paper punch (140) including such a paper punch die (125).

Abstract: A paper cutting apparatus is disclosed as including a cylindrical cutting roller with a number of closed-loop cutting ridges on its outer cylindrical surface and a support roller, in which the cutting roller is rotatable relative to the support roller to move a piece of paper or cardboard material relative to and between the cutting roller and support roller to cut out part of the piece of paper or cardboard material.

Abstract: A method of forming a base (118) for a paper punch (154) is disclosed as including the steps of (a) providing a cast iron core (102) with a wall (104) and a plate (106) with a hole (108); (b) providing two generally U-shaped cast iron plates (110); (c) positioning the plates (110) spaced apart from and on opposite sides of the core (102); and (d) insert-molding the core (102) and plates (106) with a plastics material, e.g. ABS.

Abstract: A base for a paper punch is disclosed as including an upper jaw with a front end and a rear end, a lower jaw with a front end and a rear end, a first and a second bifurcated supports, both fixedly secured with the upper jaw and the lower jaw, and a first and a second legs, each with a first end and a second end, in which the front end of the lower jaw is spaced apart from the front end of the upper jaw, and being adapted to allow insertion of a piece of paper for punching; and the rear end of the upper jaw is fixedly joined with the rear end of the lower jaw; and each of the first and second bifurcated supports has an upper fork and a lower fork which are spaced apart from each other at a front end and fixedly joined with each other at a rear end; and the upper forks of the bifurcated supports are fixedly secured with a respective lateral side of the upper jaw; and the lower forks of the bifurcated supports are fixedly secured with a respective lateral side of the lower jaw; and the first ends of the legs are

Abstract: A method of forming a base for a paper punch is disclosed as including the steps of (a) forming two generally U-shaped plates of a first metal or metal alloy, and (b) fixedly engaging the generally U-shaped plates with a core part of a second metal or metal alloy, in which the plates are in direct contact with the core part. A base for a paper punch is disclosed as including two generally U-shaped plates of a first metal or metal alloy, and a core part of a second metal or metal alloy which is fixedly engaged with the U-shaped plates, and the plates are in direct contact with the core part.

Abstract: A paper cutting apparatus is disclosed as including a cylindrical cutting roller with a number of closed-loop cutting ridges on its outer cylindrical surface and a support roller, in which the cutting roller is rotatable relative to the support roller to move a piece of paper or cardboard material relative to and between the cutting roller and support roller to cut out part of the piece of paper or cardboard material.

Abstract: A paper punch die (125) is disclosed as including a top part (110, 202, 302) and a platform (100, 206, 306) engaged with each other, the platform (100, 206, 306) having an upper major surface (106) and a lower major surface (126, 207, 307), the upper major surface of the platform (100, 206, 306) being in abutment with a lower major surface (118) of the top part (110, 202, 302), and an endless wall (130) with an undulating cutting edge (132) extending away from the lower major surface (126, 207, 307) of the platform (100, 206, 306). There is also disclosed a paper punch (140) including such a paper punch die (125).

Abstract: A method of forming a base (118) for a paper punch (154) is disclosed as including the steps of (a) providing a cast iron core (102) with a wall (104) and a plate (106) with a hole (108); (b) providing two generally U-shaped cast iron plates (110); (c) positioning the plates (110) spaced apart from and on opposite sides of the core (102); and (d) insert-moulding the core (102) and plates (106) with a plastics material, e.g. ABS.

Abstract: A paper punch die 102 is disclosed as including an upper part 104 and a lower part 106 which are fixedly secured with each other, in which the lower part 106 includes a wall 116 with a cutting edge 118, in which the upper part 104 is made of a plastics material, and the lower part 106 is made of a metal or metal alloy.

Abstract: A paper punch 100, 200 is disclosed as including a button 110, a die 104, and a die holder 106, 210 with an upper jaw 114, 208 and a lower jaw 116 which are spaced apart from each other, in which the button 110 is operable to move the die 104 relative to the die holder 106, 210 to punch at least a piece of paper out from a sheet of paper 117 received within the paper punch 117, and the die holder 106, 210 includes a wheel 120, 202 for limiting the extent of relative movement between the upper jaw 114, 208 and the lower jaw 116.