Safety fire device

Claim 1

A SAFETY FIRE DEVICE FOR MOUNTIONG IN A ROOF OPENING, SAID DEVICE COMPRISING A PANEL ADAPTED TO BE MOUNTED IN A ROOF OPENING FOR MOVEMENT UPWARD INTO AND GRAVITATIONALLY DOWNWARD OUT OF SAID OPENING, QUICK-ACTING LATCH MEANS ADAPTED TO BE MOUNTED ADJACENT TO A ROOF ROOF OPENING AND MOVABLE BETWEEN A RETAINING POSITION FOR RETAINING SAID PANEL IN SAID OPENING AND A RELEASING POSITION FOR RELEASING SAID PANEL FROM SAID OPENING, SAID LATCH MEANS BEING URGED TOWARD ITS RELEASING POSITION BY THE GRAVITATIONAL FORCE OF SAID PANEL, A HEAT-FUSIBLE HOLDING MEMBER CONNECTED TO SAID LATCH MEANS FOR HOLDING THE LATTER IN ITS RETAINING POSITION AGAINST THE GRAVITATIONAL FORCE OF SAID PANEL, A WEIGHT CONNECTED TO SAID HOLDING MEMBER FOR INCREASING THE LATCH-HOLDING FORCE OF SAID HOLDING MEMBER, AND CONNECTION MEANS CONNECTING SAID WEIGHT OT SAID HOLDING MEMBER, SAID CONNECTION MEANS BEING LOOSE WHEN SAID HOLDING MEMBER IS IN ITS LATCHHOLDING RELATION FOR APPLYING THE FORCE OF SAID WEIGHT THROUGH SAID HOLDING MEMBER TO SAID LATCH MEANS WHEREBY RELEASE OF SAID WEIGHT BY SAID HOLDING MEMBER EFFECTS TRANSMISSION OF THE FORCE OF SAID WEIGHT THROUGH SAID CONNECTION MEANS TO SAID PANEL, SAID HOLDING MEMBER RELEASING SAID LATCH MEANS AND WEIGHT UNDER THE INFLUENCE OF HEAT TO RELEASE SAID PANEL FOR MOVEMENT OUT OF SAID OPENING.