Patent ID: 8220161

Claim:
A multi-function cutter, comprising: a body composed of a first half and a second half that are abreast combined, wherein each of the first half and the second half has: an end edge formed with an indentation; an upper edge formed with a concave portion; a guide provided below the concave portion; and a row of positioning pits arranged along the concave portion; a blade holder including: a blade socket for receiving a blade; engaging portions bilaterally formed thereon for being slidably coupled with the guides so as to stretch the blade holder outside the indentations, and a spring socket; and an adjusting device being deposited in the spring socket and jutting out of the concave portions, wherein an adjusting spring is arranged between the adjusting device and the spring socket, and the adjusting device is bilaterally formed with wedge portions for detachably engaging corresponding said positioning pits, whereby, when the adjusting device is pressed downward, the adjusting spring is compressed to allow the wedge portions to depart from the positioning pits and the engaging portions are allowed to slide along the guides, and afterward, the adjusting spring that normally pushes the adjusting device makes the wedge portions engage the corresponding positioning pits, so as to allow the blade holder to stretch in multiple stages.