| 摘要 |
In order to facilitate a scoring of a sheet of material such as drywall, plasterboard, wallboard or the like, an apparatus includes a pair of arms each having an upper end and a lower end where the arms are spaced apart to define a sheet-receiving channel for receiving the sheet of material therebetween. The lower ends of the arms define an entry point for the sheet of material so the sheet of material can be placed between the arms and within the sheet-receiving channel with the sides generally perpendicular to a plane defined by the arms. The upper ends of the arms are connected to accommodate relative movement of the lower ends of the arms toward and away from one another. The apparatus includes a cutter for scoring at least one side of the sheet of material which is operatively associated with at least one of the arms at a point located generally remote from the upper end thereof. It also includes an elongated channel operatively associated with at least one of the arms for engaging the elongated edge of the sheet of material when it is positioned in the sheet-receiving channel. The elongated channel is positioned between the arms so as to guide the cutter along a line which extends generally parallel to the elongated edge of the sheet of material. The arms have a force applied to them at a point generally between the elongated channel and the upper ends of the arms to force the cutter into scoring engagement with the sheet of material. In order to make a tapered cut with the apparatus, a jig is provided in the form of a generally elongated channel-shaped guide carrying a stop that is adjustably positioned to cause the apparatus to be guided along a tapered line.
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