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A hand-operated cutting apparatus including a main frame at least including a front wall, a base wall and two side walls, in which an opening is formed in the front wall, and a rack formed on an upper surface of the base wall along the length of the main frame, a bracket disposed between the side wa

A hand-operated cutting apparatus including a main frame at least including a front wall, a base wall and two side walls, in which an opening is formed in the front wall, and a rack formed on an upper surface of the base wall along the length of the main frame, a bracket disposed between the side walls of the main frame and movable along the length of the main frame, a cutter provided in the front of the main frame and including a cutting blade located within the opening, and a squeezer attached to the front surface of the bracket facing to the cutter. The bracket includes a base, a handle pivotally provided on the base and a pusher arm pivotally provided on the handle, in which a lower end of the pusher arm is located between two teeth of the rack, and the pivot axis of the pusher arm on the handle departs from the pivot axis of the handle on the base towards the rear of the main frame.

대표청구항 ▼

1. A hand-operated cutting apparatus comprising: a main frame at least including a front wall having an opening, a base wall and two side walls, and a rack of teeth is formed on an upper surface of the base wall along the length of the main frame;a bracket being disposed between the side walls of th

1. A hand-operated cutting apparatus comprising: a main frame at least including a front wall having an opening, a base wall and two side walls, and a rack of teeth is formed on an upper surface of the base wall along the length of the main frame;a bracket being disposed between the side walls of the main frame and movable along the length of the main frame, the bracket comprising a base, a handle comprising a pressing piece and a leg inclinedly extending from a lower side of the pressing piece towards the front of the main frame, the handle being pivotally mounted on the base by means of a first pivot positioned at a front end of the leg, a pusher arm pivotally mounted on the leg by means of a second pivot positioned at a rear part of the leg, the pusher arm including a lower end movable between two teeth of the rack, wherein the pivot axis of the pusher arm on the leg departs from the pivot axis of the handle on the base towards the rear of the main frame, and a pusher tension spring having a central hole mounted on the second pivot and including two supporting rods pressing against the pusher arm and the leg, respectively, which tends to enlarge an included angle between the pusher arm and the leg;a cutter provided in the opening in the front wall of the main frame and comprising a cutting blade located within the opening;a squeezer attached to a front surface of the bracket facing to the cutter;a stopper arm pivotally mounted on the leg by means of the first pivot, the stopper arm including a lower end located between two teeth of the rack; anda stopper tension spring having a central hole mounted on the first pivot and including two supporting rods pressing against the stopper arm and the leg, respectively, which tends to enlarge an included angle between the stopper arm and the leg. 2. The hand-operated cutting apparatus of claim 1, wherein a sliding groove is formed on an inner surface of each side wall along the length of the main frame, and the base includes a main body and side plates extending backwards from both sides of the main body, in which a sliding block is formed on an outer surface of each of the side plates for engaging with the respective sliding groove. 3. The hand-operated cutting apparatus of claim 2, wherein the base further comprises a central protrusion extending backwards from the center of the main body for supporting the first pivot. 4. The hand-operated cutting apparatus of claim 1, wherein a retaining sheet is formed on the leg near an upper end of the pusher arm, in which when the included angle between the pusher arm and the leg is enlarged to a certain angle, the upper end of the pusher arm presses against the retaining sheet to prevent the included angle from being further enlarged. 5. The hand-operated cutting apparatus of claim 1, wherein an end sheet is formed at an upper end of the stopper arm and is sized to cover the edge of a lower end of the leg, in which when the included angle between the leg and the stopper arm is enlarged to a certain angle, the end sheet of the stopper arm presses against the edge of the lower end of the leg to prevent the included angle from being further enlarged. 6. The hand-operated cutting apparatus of claim 1, wherein the cutter further comprises a stand, and the number of the cutting blades is two or more, in which the cutting blades are provided within the stand and cross each other to form apertures by adjacent cutting blades. 7. The hand-operated cutting apparatus of claim 6, wherein a groove is formed in the front wall of the main frame around the opening, and at least one side of the groove is open to enable the insertion of the stand of the cutter, in which an aligning projection extends outwards from the stand, and an aligning aperture is formed at the side of the front wall opposite to the open side of the groove to enable the insertion of the aligning projection. 8. The hand-operated cutting apparatus of claim 6, wherein the squeezer comprises a substrate and at least a squeezing pole extending forwards from the substrate and corresponding to the apertures formed by the cutting blades. 9. The hand-operated cutting apparatus of claim 8, wherein a set of upper connecting tabs is formed at the top of the substrate opposite to the squeezing pole and upper projections are formed at the end of the respective upper connecting tabs, and a lower connecting tab extends backwards from the lower part of each side of the substrate opposite to the squeezing pole and lower projections extend upwards from the top of the respective lower connecting tabs, and wherein recesses are formed on the front surface of the bracket for the insertion of the corresponding upper connecting tabs, and a set of connecting holes are formed at the top side of the bracket to align with the recesses for the insertion of the upper projections, and a rim is formed downwards from each side of the bracket to form a receiving recession with the other part of the bracket, in which the receiving recessions receive the lower projections of the squeezer. 10. The hand-operated cutting apparatus of claim 6 further comprising a knife holder provided in front of the main frame and having a foundation and a pair of vertical columns extending upwards from the both sides of the foundation, in which the rear edge of each vertical columns is separated from that of the foundation. 11. The hand-operated cutting apparatus of claim 10, wherein the knife holder further comprises an attaching plate extending from the lower side of the foundation for attaching to the bottom of the main frame. 12. The hand-operated cutting apparatus of claim 11, wherein a coupling groove is formed on the rear surface of the foundation, and a coupling projection extends outwards from the lower side of the front wall of the main frame for engaging with the coupling groove. 13. A hand-operated cutting apparatus comprising: a main frame at least including a front wall having an opening, a base wall and two side walls, and a rack of teeth is formed on an upper surface of the base wall along the length of the main frame;a bracket being disposed between the side walls of the main frame and movable along the length of the main frame, the bracket comprising a base, a handle comprising a pressing piece and a leg inclinedly extending from a lower side of the pressing piece towards the front of the main frame, the handle being pivotally mounted on the base by means of a first pivot positioned at a front end of the leg, a pusher arm pivotally mounted on the leg by means of a second pivot positioned at a rear part of the leg, the pusher arm including a lower end movable between two teeth of the rack, wherein the pivot axis of the pusher arm on the leg departs from the pivot axis of the handle on the base towards the rear of the main frame;a cutter provided in the opening in the front wall of the main frame and comprising a cutting blade located within the opening;a squeezer attached to a front surface of the bracket facing to the cutter;a stopper arm pivotally mounted on the leg by means of the first pivot, the stopper arm including a lower end located between two teeth of the rack, and an end sheet formed at an upper end of the stopper arm that is sized to cover the edge of a lower end of the leg, in which when an included angle between the leg and the stopper arm is enlarged to a certain angle, the end sheet of the stopper arm presses against the edge of the lower end of the leg to prevent the included angle from being further enlarged between the leg and the stopper arm. 14. The hand-operated cutting apparatus of claim 13 further comprising a pusher tension spring having a central hole mounted on the second pivot and including two supporting rods pressing against the pusher arm and the leg, respectively, which tends to enlarge an included angle between the pusher arm and the leg. 15. The hand-operated cutting apparatus of claim 13 further comprising a stopper tension spring having a central hole mounted on the first pivot and including two supporting rods pressing against the stopper arm and the leg, respectively, which tends to enlarge the included angle between the stopper arm and the leg. 16. The hand-operated cutting apparatus of claim 13, wherein a retaining sheet is formed on the leg near an upper end of the pusher arm, in which when the included angle between the pusher arm and the leg is enlarged to a certain angle, the upper end of the pusher arm presses against the retaining sheet to prevent the included angle from being further enlarged.