Emergency escape

Claim 1

IN AN EMERGENCY ESCAPE FOR A BUILDING, A FRAME MOUNTED IN THE WALL OF THE BUILDING AND HAVING LATCH-ROD RECEIVING OPENINGS THEREIN, THE FRAME HAVING SIDE WALLS FORMING AN ESCAPE OPENING, A CLOSURE MOUNTED IN THE OPENING IN THE FRAME AND HAVING SIDE WALLS ADAPTED TO ABUT THE SIDE WALLS OF THE FRAME, THE SIDE WALLS OF THE CLOSURE BEING FORMED WITH OPENINGS IN SUBSTANTIAL ALIGNMENT WITH THE LATCH-ROD OPENINGS IN THE FRAME, A CRANK MEMBER, MEANS MOUNTING THE CRANK MEMBER FOR ROTATIONAL MOVEMENT WITHIN THE CLOSURE AND FOR MOVEMENT IN A DIRECTION PERPENDICULAR TO THE PLANE OF ROTATION OF THE CRANK MEMBER, A PLURALITY OF LATCH-RODS EXTENDING THROUGH THE OPENINGS IN SAID CLOSURE AND BEING CONNECTED TO SAID CRANK MEMBER SO THAT SAID RODS CAN BE EXTENDED INTO THE LATCH-ROD RECEIVING OPENINGS IN THE FRAME BY ROTATION OF THE CRANK MEMBER IN ONE DIRECTION AND RETRACTED FROM THE LATCH-ROD RECEIVING OPENINGS IN THE FRAME BY ROTATION OF THE CRANK MEMBER IN AN OPPOSITE DIRECTION, SPRING MEANS YIELDABLY URGING SAID RODS OUT OF ENGAGEMENT WITH THE LATCH-ROD RECEIVING OPENINGS IN THE FRAME, MEANS FOR LOCKING SAID CRANK MEMBER AND LATCH RODS IN A POSITION SO THAT THE LATCH RODS ARE SEATED IN THE LATCH-ROD RECEIVING OPENINGS IN THE FRAME AND MEANS FOR RELEASING SAID CRANK MEMBER AND THE LATCH RODS CARRIED THEREBY SO THAT SAID SPRING MEANS CAN AUTOMATICALLY MOVE SAID LATCH RODS OUT OF ENGAGEMENT WITH THE LATCH-ROD RECEIVING OPENINGS IN THE FRAME, THE MEANS FOR LOCKING SAID CRANK MEMBER INCLUDING AN ABUTMENT MEMBER ADAPTED TO BE ENGAGED BY THE CRANK MEMBER AND SPRING MEANS FOR YIELDABLY URGING THE CRANK MEMBER INTO ENGAGEMENT WITH THE ABUTMENT MEMBER.