| 摘要 |
A cutting tool for plastic tubes or the like including a pair of pivotally connected handle members. One member is defined by a pair of sidewalls interconnected by spaced web portions, an integrally formed jaw for supporting a tube to be cut, pivot structure for pivotally supporting a cutting blade and a slot through which the cutting blade extends. The second handle member carries a ratchet plate having a aperture defining a plurality of ratchet teeth. The ratchet plate is secured to the second handle member by the co-engagement between a pivot pin and an aperture formed in the ratchet plate and a mounting edge that abutably engages an abutment wall formed by the second handle member. The cutting blade is mounted to the first member by a pivot assembly which is easily removed to release the blade. In addition, the pivot assembly is operative to apply a clamping force between the handle member and the cutting blade to produce a drag on the blade so that it remains stationary when the handle members are released. A reset linkage acting between the second handle member and a ratchet lever is operative to release the ratchet mechanism whenever the handle members are spread apart so that a ratchet pawl is permitted to move to its starting position at the commencement of a cutting cycle. The cutting blade is easily removed from the cutting tool by removing the pivot assembly and by releasing the engagement between the ratchet mechanism and the cutting blade. An easily removable pin including a spring ring connects the ratchet mechanism with the cutting blade.
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