Apparatus for scribing wall panels

In an apparatus for scribing a rough sized second wall panel for insertion into a wall area defined by a first reference line formed by the proximal edge of an already mounted first wall panel and a second reference line spaced therefrom, including jig means for positioning said second panel relative to said wall section such that a first edge thereof is in overlapping relationship with and spaced a predetermined distance from said first reference line and the opposite edge of said second panel is positioned proximal to said second reference line;

• and scribing means including a reference line follower and a scriber spaced said predetermined distance therefrom for scribing a trim line corresponding to said second reference line along said second panel at a position inwardly spaced from the opposite edge thereof a distance generally equal to said predetermined distance such that the shape of the area of said second panel between said first edge and said trim line is substantially equal to the shape of the said wall area;
• the improvement comprising, jig means having a generally S-shaped body, first and second open ended longitudinally oriented generally U-shaped slots adapted to receive said proximal edge of said first panel and said first edge of said second panel respectively therein, said slots respectively opening on opposite sides of said jig body, each said slot including a base wall defining the longitudinal extent thereof with said base walls longitudinally spaced said predetermined distance apart from each other, said panel edges received in said slots adapted to abut said base walls, said slots further including opposed inner and outer sidewalls longitudinally extending from respective base walls thereof, the inner sidewall of said first slot forming a flange in turn forming the lower run of said generally S-shaped body, said flange adapted to extend behind said first panel and in contact with both said first panel and said wall, first holding means adapted to extend onto said first slot for releasably and securely holding said first panel in said first slot and second holding means adapted to extend into said second slot to releasably and securely hold said second panel in said second slot said first and second holding means extending into said first and second slots from the same side of said S-shaped body.