Combination drawing board and filing cabinet

Claim 1

A COMBINATION DRAWING TABLE AND FILING CABINET COMPRISING AN OPEN-TOP BOX-LIKE FILING CABINET MEMBER HAVING BOTTOM, FRONT, BACK, AND OPPOSITE SIDE WALL PORTIONS DEFINING THEREBETWEEN A FILLING SPACE, SAID SIDE WALL PORTIONS EXTENDING REARWARDLY BEYOND SAID BACK AND BOTTOM WALL PORTIONS AND THEREBY PROVIDING A KNEE-SPACE THEREBETWEEN, A TOP RAIL EXTENDING MEMBERS AND OVERHEAD CORNER PORTIONS OF SAID SIDE WALL MEMBERS AND OVERHEAD SPANNING SAID KNEE-SPACE, A COMBINATION FILING CABINET COVER AND DRAWING BOARD MEMBER DIMENSIONED TO LIE FLATWISE AGAINST THE UPPER EDGES OF SAID SIDE AND FRONT AND BACK WALL PORTIONS TO PROVIDE A TOP COVER FOR THE FILING CABINET SPACE THEREWITH AND HINGEDLY CONNECTED ALONG ITS REAR EDGE TO SAID TOP RAIL WHEREBY TO BE SWINGABLE BETWEEN HORIZONTAL CABINET-CLOSING POSITION AND UPWARDLY INCLINED DRAWING BOARD POSITIONS AND VERTICALLY STANDING CABINET FULLY OPENED POSITION, A MECHANISM FOR COUNTERBALANCING OPENING AND CLOSING MOVEMENTS OF SAID COVER, AND A COVER POSITION LOCK DEVICE COMPRISING A BRAKE MEMBER MANUALLY ADJUSTABLE FROM EXTERNALLY OF SAID CABINET FOR HOLDING SAID COVER IN ANY POSITION OF ADJUSTMENT.