Counterbalanced tiltable table

Claim 1

A DRAFTING TABLE COMPRISING; A BASE HAVING FIRST AND SECOND SPACED SUPPORTS; A DRAFTING BOARD HAVING MOUNTED BRACKETS ADJACENT OPPOSITE ENDS EXTENDING LATERALLY FROM THE UNDERSIDE OF THE BOARD; A TUBE ROTATABLY MOUNTED IN SAID FIRST AND SECOND SUPPORTS AND EXTENDING HORIZONTALLY THEREBETWEEN; SAID TUBE BEING NON-ROTATABLY ATTACHED TO EACH OF SAID MOUNTING BRACKETS TO SUBSTANTIALLY EQUALIZE THE TORQUE APPLIED TO THE MOUNTING BRACKETS AT OPPOSITE ENDS OF THE BOARD AND THEREBY MINIMIZE TWISTING OF THE BOARD, SAID TUBE BEING SPACED LATERALLY FROM THE UNDERSIDE OF THE BOARD AND SUPPORTING THE BOARD FOR MOVEMENT BETWEEN A GENERALLY HORIZONTAL AND A GENERALLY UPRIGHT POSITION, SAID TUBE BEING LOCATED INTERMEDIATE THE EDGES OF THE BOARD BUT RELATIVELY CLOSER TO THE SIDE EDGE OF SAID BOARD THAT IS LOWERMOST WHEN THE BOARD IS UPRIGHT WHEREBY THE BOARD IS OVERBALANCED AS IT APPROACHES SAID HORIZONTAL POSITION, THE OFFSET BETWEEN THE BOARD AND THE TUBE AXIS CAUSING THE BOARD TO BE NORMALLY OVERBALANCED AS IT APPROACHES SAID UPRIGHT POSITION; FIRST AND SECOND TORQUE APPLYING SPRINGS INSIDE THE TUBE; FIRST AND SECOND ANCHOR MEANS CONNECTING ONE END OF EACH SPRING TO SAID TUBE AT POINTS LOCATED INTERMEDIATE THE ENDS OF THE TUBE TO APPLY THE TORSION IN THE SPRINGS TO THE TUBE; A THIRD ANCHOR MEANS AT ONE END OF THE TUBE CONNECTED TO THE OTHER END OF SAID FIRST SPRING AND ENGAGING SAID FIRST SUPPORT PROVIDING AN ANGULARLY ADJUSTABLE ANCHOR FOR SAID OTHER END OF SAID FIRST SPRING; A FOURTH ANCHOR MEANS AT THE OTHER END OF THE TUBE CONNECTED TO THE OTHER END OF SAID SECOND SPRING AND ENGAGING SAID SECOND SUPPORT PROVIDING AN ANGULARLY ADJUSTABLE ANCHOR FOR SAID OTHER END OF SAID SECOND SPRING; SAID THIRD AND FOURTH ANCHOR MEANS BEING INDEPENDENTLY ADJUSTABLE TO ENABLE INDIVIDUAL ADJUSTMENT OF THE TORSION IN EACH SPRING FOR COUNTERBALANCING THE BOARD; AND SELECTIVELY OPERABLE MEANS FOR LOCKING SAID BOARD IN DIFFERENT ANGULARLY ADJUSTED POSITIONS BETWEEN SAID HORIZONTAL AND UPRIGHT POSITIONS.