Power file ejector construction

Claim 1

POWER-OPERATED, EJECTOR-RETRACTOR CONSTRUCTION FOR MOVING THE DRAWERS OF A POWER FILE OF THE TYPE IN WHICH A PLURALITY OF PANS ARE MOUNTED ON AN ENDLESS CONVEYER MECHANISM CARRIED BY SUPPORT MEANS FOR MOVEMENT IN EITHER DIRECTION IN A CONTINUOUS ORBIT OF TRAVEL HAVING AT LEAST ONE FLIGHT OF TRAVEL IN A PLANE EXTENDING PARALLEL WITH THE ORBITAL AXES AND ANY SELECTED PAN IS DELIVERED BY CONVEYOR DRIVE POWER MEANS TO A PREDETERMINED WORK STATION LOCATION, AND IN WHICH A DRAWER IS SUPPORTED ON EACH PAN AS A PAN-DRAWER ASSEMBLY ON SUSPENSION MECHANISM WHICH PERMITS THE DRAWER TO BE MOVED BETWEEN EJECTED AND RETRACTED POSITIONS THROUGH A FILE ACCESS OPENING PROVIDED IN THE FILE CASE AT SAID WORK STATION LOCATION; THE CONSTRUCTION INCLUDING IN COMBINATION, DRAWER-MOVING MECHANISM, MEANS MOUNTING SAID DRAWER-MOVING MECHANISM ON THE FILE SUPPORT MEANS ADJACENT THE WORK STATION AND BETWEEN FLIGHTS OF ORBITAL CONVEYER TRAVEL; THE DRAWERMOVING MECHANISM INCLUDING SLIDE BAR MEANS MOVABLE GENERALLY IN A DIRECTION BETWEEN HOME AND EXTENDED POSITIONS PARALLEL WITH THE AXES OF THE ORBITAL PATH OF CONVEYOR TRAVEL, MEANS FOR IMPARTING GENERALLY ACCELERATING AND DECELERATING SLOW-FAST-SLOW MOVEMENT IN EITHER DIRECTION TO THE SLIDE BAR MEANS INCLUDING REVERSING MOTOR DRIVE MEANS, AN OSCILLATING CRANK OPERATIVELY CONNECTED WITH THE DRIVE MEANS, AND A CONNECTING ROD PIVOTALLY CONNECTED WITH THE CRANK AND SLIDE BAR MEANS; COLUMN-ACTING, FORCE-TRANSMITTING COIL SPRING THRUSTOR MEANS CONNECTED AT ONE END TO THE SLIDE BAR MEANS HAVING A MAGNET ADAPTED FOR MAGNETIC COUPLING AT ITS OTHER END WITH A DRAWER OF ANY PAN-DRAWER ASSEMBLY LOCATED AT SAID PREDETERMINED WORK STATION LOCATION; MEANS FOR DIRECTING THRUST MOVEMENT OF SAID THRUSTOR MAGNET IN A DIRECTION NORMAL TO THE PLANE OF AT LEAST ONE OF THE FLIGHTS OF CONVEYER TRAVEL; AND CONTROL MEANS FOR OPERATING THE REVERSING MOTOR DRIVE MEANS.