Locking mechanism and panic actuating device

Claim 1

IN COMBINATION WITH A DOOR HAVING A HOLLOW LOCKING STILE ON ONE OF ITS SIDES AND A HINGE STILE ON THE OTHER SIDE, LATCH CASES MOUNTED IN THE UPPER AND LOWER ENDS OF THE LOCKING STILE, ROTATING LATCHES IN THE SAID LATCH CASES, EACH OF SAID LATCHES HAVING A LOCKING RIB RECEIVING RECESS IN ONE SIDE THEREOF AND HAVING A SHOULDER FORMED THEREON AND ALSO HAVING SPRING RECEIVING RECESSES IN THE OUTER EDGES THEREOF, COMBINED LOCKING AND STRIKING RIBS MOUNTED ON THE DOOR FRAME FOR ENGAGEMENT WITH THE SAID LATCHES, PIVOTALLY MOUNTED UPPER AND LOWER DETENTS MOVABLE FOR ENGAGEMENT WITH THE SHOULDERS ON SAID LATCHES, SPRINGS CARRIED BY THE LATCH CASES IN ENGAGEMENT WITH THE LATCHES AND FITTING INTO THE SPRING RECEIVING RECESSES WHEREBY THE SAID LATCHES ARE HELD AGAINST ROTATION WHEN IN UNLATCHED POSITION, A THROW BAR, A PUSH ROD CONNECTED TO THE THROW BAR AT ITS UPPER END FOR ENGAGEMENT WITH THE UPPER DETENT, A SECOND ROD CONNECTED TO THE SAID THROW BAR AND TO THE LOWER DETENT, A GUIDE FOR THE SAID PUSH ROD, A COMPRESSION SPRING ON THE SAID PUSH ROD IN ENGAGEMENT WITH THE SAID GUIDE AND THE THROW BAR, A PIVOTALLY MOUNTED LEVER ON THE SAID DOOR, ONE END OF WHICH ENGAGES THE THROW BAR AND A THRUST BAR MOUNTED ON THE OTHER END OF THE SAID LEVER.