Patent ID: 7360482

Claim:
A crank roller paper cutting device, comprising: a base; a support coupled to said base and extending upwardly therefrom; a crank handle rotatably coupled to said support having a first gear rotatable thereby; a master roller having a first end rotatably coupled to said support and a second free end; a slave roller having a first end rotatably coupled to said support and a second free end; a removable positioning block coupled to said free ends of said master roller and slave roller, said block supporting the free ends of said master and slaver rollers to maintain said master and slave rollers in a substantially parallel relationship; and a plurality of speed reducing gears coupled to said crank handle, said master roller and said slave roller, said plurality of speed reducing gears including a first gear fixed relative to said crank handle, a first two-scale gear slideably connected relative to said master roller, a second two-scale gear fixed relative to said master roller, a third two-scale gear slideably connected relative to said slave roller, and a second gear fixed relative to said slave roller, the first gear engaging a larger gear of said first two-scale gear, a smaller gear of said first two-scale gear engaging a larger gear of said third- two-scale gear, a smaller gear of said third two-scale gear engaging a larger gear of said second two-scale gear and a larger gear of said second two-scale gear engaging said second gear.