Drawing board table support clamp

Claim 1

A CLAMP, ADAPTED TO GRIP AND HOLD AN OBJECT TO A TABLE HAVING A TOP AND AN APRON DEPENDING DOWNWARDLY FROM UNDER SAID TOP, COMPRISING IN COMBINATION A. A C-SHAPED MEMBER HAVING A HORIZONTAL BOTTOM PORTION, AN UPSTANDING REAR PORTION AND AN UPSTANDING FRONT PORTION, B. A TURNED OVER INWARDLY EXTENDING PORTION FORMED ON THE TOP OF SAID FRONT PORTION AND HAVING A DOWNWARDLY FACING ABUTMENT SURFACE ADAPTED TO ENGAGE THE TOP SURFACE OF THE TABLE ADJACENT AN EDGE OF THE TABLE TOP, C. A VERTICALLY DISPOSED INWARDLY FACING ABUTMENT SURFACE FORMED ON THE FRONT PORTION OF SAID CLAMP ADAPTED TO ENGAGE THE FRONT EDGE OF THE TABLE TOP ADJACENT SAID TURNED OVER INWARDLY EXTENDING PORTION OF SAID CLAMP, D. AN ABUTMENT PAD FORMED ON TOP OF SAID REAR PORTION AND HAVING AN UPWARDLY FACING ABUTMENT SURFACE ADAPTED TO ENGAGE THE BOTTOM SURFACE OF THE TABLE TOP. E. MEANS ON THE UPPER PART OF SAID FRONT PORTION FOR SUPPORTING A DRAWING BOARD AND THE LIKE ON SAID CLAMP, F. AND MEANS ON SAID CLAMP ADAPTED TO ENGAGE THE IN SIDE SURFACE OF THE TABLE APRON WITH HORIZONTAL PRESSURE PARALLEL TO AND BELOW SAID ABUTMENT SURFACE ON SAID TURNED OVER INWARDLY EXTENDING PORTION AND SAID ABUTMENT PAD OF SAID CLAMP AND ABOVE THE LOWER EDGE OF THE TABLE APRON IN AN OPPOSED DIRECTION TO SAID VERTICALLY DISPOSED INWARDLY FACING ABUTMENT SURFACE ON SAID FRONT PORTION SO AS TO RIGIDLY SECURE SAID CLAMP TO THE TABLE.