Cutter for picture frame mats

Claim 1

A CUTTER FOR PICTURE FRAME MATS COMPRISING: (A) A GENERALLY RECTANGULAR BASEBOARD PROVIDING A HORIZONTALLY DISPOSED PLANAR WORK-WUPPORTING SURFACE; (B) CLAMP MEANS CARRIED BY SAID BASEBOARD AND ADAPTED TO BE RAISED AND LOWERED, SAID CLAMP MEANS INCLUDING (1) A PAIR OF LATERALLY SPACED GENERALLY PARALLEL ARMS, (2) AN ELONGATED TIE-BAR CONNECTING THE INTERMEDIATE PORTIONS OF SAID ARMS AND DEFINING A WORKENGAGING UNDERSURFACE. (3) SAID ELONGATED TIE-BAR HAVING OPPOSITE LONGITUDINAL EDGES WHICH DEFINE FIRST AND SECOND GUIDEACTING CUTTING EDGES, THE PLANE OF SAID FIRST GUIDEACTING CUTTING EDGE FROMING AN ACTURE ANGLE WITH SAID UNDERSURFACE AND THE PLANE OF SAID SECOND GUIDE-ACTING CUTTING EDGE FORMING A RIGHT ANGLE WITH SAID UNDERSURFACE, AND (4) MEANS HINGEDLY SECURING COMMON ENDS OF SAID PAIRS OF ARMS TO SAID BASEBOARD ON AN AXIS DISPOSED IN THE PLANE OF SAID WORK-SUPPORTING SURFACE FOR FORMING AN ACUTE ANGLE BETWEEN SAID WORK-ENGAGING UNDERSURFACE OF SAID TIE-BAR AND A MAT DISPOSED ON SAID BASEBOARD THE APEX OF WHICH IS IMMEDIATELY ADJACENT SAID FRIST GUIDEACTING CUTTING EDGE WHEN SAID TIE-BAR IS IN THE LOWER OR THE CLAMPING POSITION; (C) A HEAD MOUNTED AND GUIDED ON SAID TIE-BAR FOR LONGITUDINAL SLIDING MOVEMENTS INTERMEDIATE AND PARALLEL TO SAID GUIDE-ACTING EDGES; (D) A PAIR OF LEVERS PIVOTALLY SECURED TO OPPOSITE SIDE PORTIONS OF SAID HEAD ON AXES GENERALLY NORMAL TO THE AXIS OF THE SLIDING MOVEMENT THEREOF; AND (E) SAID LEVELS HAVING CUTTING BLADES ON ONE END WHICH ARE RAISED AND LOWERED WITH RESPECT TO SAID WORK-SUPPORTING SURFACE.