Reading and writing head mounting means

Claim 1

FOR A COMPUTER HAVING A BASE, A STORAGE DRUM ON SAID BASE AND A PLURALITY OF READING AND/OR WRITING HEADS MOUNTED IN PROXIMITY TO THE RECORDING SURFACE OF SAID DRUM, AN IMPROVED MOUNTING FOR SAID READING AND/OR WRITING HEADS COMPRISING A CARRIER FOR SAID HEADS ADJUSTABLY MOUNTED WITH RESPECT TO SAID BASE TO SUPPORT SAID HEADS IN VARIOUS DEGREES OF PROXIMITY TO THE RECORDING SURFACE OF SAID DRUM, PNEUMATIC CONTROL MEANS CONNECTED TO SAID BASE AND TO SAID CARRIER, SAID PNEUMATIC CONTROL MEANS INCLUDING A CONTROL NOZZLE MOUNTED ON SAID CARRIER TO DISCHARGE AGAINST A SURFACE OF SAID DRUM WHEREBY THE PRESSURE IN SAID NOZZLE IS A FUNCTION OF THE DISTANCE BETWEEN SAID NOZZLE AND SAID DRUM SURFACE, COMPENSATING MEANS CONNECTING WITH SAID BASE AND WITH SAID CARRIER TO EXERT A CONSTANT PREDETERMINED FORCE ON SAID CARRIER IN THE DIRECTION OF SAID DRUM SURFACE, SAID CONTROL MEANS BEING RESPONSIVE TO PRESSURE IN SAID NOZZLE TO EXERT A FORCE ON SAID CARRIER IN A DIRECTION AWAY FROM SAID DRUM SURFACE, THE FORCE OF SAID COMPENSATING MEANS ON SAID CARRIER BEING ADAPTED TO OPPOSE THE FORCE OF SAID CONTROL MEANS ON SAID CARRIER AND TO BALANCE THE FORCE OF SAID CONTROL MEANS WHEN SAID NOZZLE IS A PREDETERMINED DISTANCE FROM SAID RECORDING SURFACE OF SAID DRUM WHEREBY THE CORRECT DEGREE OF PROXIMITY BETWEEN HEADS CARRIED BY SAID CARRIER AND SAID DRUM IS MAINTAINED, SAID CONTROL MEANS INCLUDING A CONTROL BELLOWS RESPONSIVE TO NOZZLE PRESSURE AND CONNECTING WITH SAID BASE AND WITH SAID CARRIER.