Portable undercutting saw

Claim 1

A PORTABLE SAW FOR UNDERCUTTING WOODWORK ADJACENT TO A FLOOR OR THE LIKE AND COMPRISING: (A) A BASE PLATE HAVING A SUBSTANTIALLY PLANAR LOWER SURFACE ADAPTED TO BE POSITIONED UPON AND MOVED ALONG THE FLOOR; (B) AN ELONGATE SUPPORT PLATE DETACHABLY MOUNTED IN CANTILEVER FASHION UPON SAID BASE PLATE WITH ONE END OF SAID SUPPORT PLATE BEING LATERALLY OFFSET FROM SAID BASE PLATE AND THE OTHER END OF SAID SUPPORT PLATE BEING IN VERTICAL ALINEMENT WITH SAID BASE PLATE, SAID ONE END OF SAID SUPPORT PLATE BEING ARCUATE AND THE SIDE EDGES OF SAID SUPPORT PLATE ADJACENT SAID ARCUATE END CONVERGING THERETO AND MERGING TANGENTIALLY THEREWITH, WITH THE ANGLE DEFINED BETWEEN SAID SIDE EDGES BEING APPROXIMATELY FIFTY DEGREES; AND SAID SUPPORT PLATE HAVING A VERTICAL BORE EXTENDING THROUGH THE CENTER OF CURVATURE OF SAID ARCUATE END THEREOF; (C) A ROTATABLE SPINDLE MOUNTED WITHIN SAID BORE AND HAVING A LOWER END PORTION PROJECTING THEREFROM BELOW SAID SUPPORT PLATE; (D) A CIRCULAR SAW BLADE MOUNTED UPON SAID LOWER END PORTION OF SAID SPINDLE AND HAVING A PORTION EXTENDING OUTWARDLY FROM BENEATH SAID ARCUATE END AND SAID SIDE EDGES OF SAID SUPPORT PLATE FOR UNDERCUTTING THE WOODWORK, SAID ARCUATE END AND SAID SIDE EDGES OF SAID SUPPORT PLATE BEING ADAPTED TO ABUT THE WOODWORK AND THEREBY GUIDE AND LIMIT THE CUT OF SAID SAW BLADE; (E) AN ELECTRIC MOTOR MOUNTED UPON SAID SUPPORT PLATE ADJACENT SAID OTHER END THEREOF AND IN LATERALLY OFFSET RELATION TO SAID SAW BLADE; (F) HANDLE MEANS UPON SAID MOTOR FOR GRASPING AND MANIPULATING THE SAW; AND (G) FLEXIBLE BELTING INTERCONNECTING SAID MOTOR AND SAID SPINDLE FOR ROTATING SAID SAW BLADE WHILE SAID MOTOR IS IN OPERATION.