Power file safety device

Claim 1

A POWR FILE SAFETY DEVICE INCLUDING A PLURALITY OF PANS, MEANS FOR MOUNTING AND MOVING THE PANS IN A CONTINUOUS ORBIT OF TRAVEL INCLUDING UPPER AND LOWR TURNING PORTIONS AND INTERMEDIATE VERTICAL PORTIONS, A HOUSING ENCLOSING THE PANS AND SAID MEANS AND INCLUDING A PANACCESS OPENING, A RECORD-CARD-CARRYING DRAER IN EACH PAN AND BEING HORIZONTALLY SLIDABLE BETWEEN EXTENDED AND RETRACTED POSITIONS THROUGH THE ACCESS OPENING, LATCH MEANS ENGAGEABLE BETWEEN EACH DRAWER AND PAN, THE LATCH MEANS WHEN LATCHED HOLDING ITS RELATED DRAWER NORMALLY LATCHED IN THR RETRACTED POSITION AND WHEN UNLATCHED RELEASING SUCH DRAWER PRELIMINARILY TO SLIDING THE DRAWER TO THE EXTENDED POSITION, AN ELECTRIC CIRCUIT INCLUDING MOTOR MEANS FOR MOVING THE PANS THROUGH THE ORBIT OF TRAVEL, THE CIRCUIT INCLUDING PAN-SELECTOR SWITCH MEANS FOR SELECTING AND STOPPING A SELECTED PAN AT THE ACCESS OPNING, THE CIRCUIT ALSO INCLUDING A CONTACT STRIP ADJACENT THE ACCESS OPENING, THE CIRCUIT ALSO INCLUDING A LATCH SWITCH FOR EACH DRAWER AND PAN AND HAVINNG A SWITCH CONTACT ENGAGEABLE WITH THE CONTACT STRIP, THE LATCH SWITCH FOR ANY DRAWER BEING MOVABLE BY THE LATCH MEANS FOR SUCH DRAWER BETWEEN OPENED AND CLOSED POSITIONS, AND THE LATCH SWITCH OPENING THE CIRCUIT THROUGH THE MOTOR IN ONE OF SAID POSITIONS WHEN THE DRAWER LATCH MEANS IS UNLATCHED.