Respirator valve mechanism

Claim 1

THE COMBINATION WITH A SUPPORT CARRYING AN AIR PURIFYING AND OXYGEN GENERATING CANISTER HAVING AND INLET AND AN OUTLET AND A BREATHING BAG COMMUNICATING WITH SAID OUTLET AND HAVING AN OUTLET, OF A VALVE MECHANISM CARRIED BY SAID SUPPORT AND COMPRISING A HOUSING HAVING AN OUTLET COMMUNICATING WITH SAID CANISTER INLET AND HAVING AN INLET COMMUNICATING WITH SAID BAG OUTLET, THE HOUSING ALSO HAVING A COMBINATION INLET AND OUTLET OPENING ADAPTED TO BE CONNECTED TO ONE END OF A BREATHING HOSE, CHECK VALVES IN THE HOUSING CONTROLLING FLOW BETWEEN SAID OPENING AND SAID HOUSING INLET AND OUTLET, THE HOUSING BEING PROVIDED WITH AN AUXILIARY INLET PORT, A VALVE NORMALLY CLOSING SAID PORT BUT MOVABLE INWARDLY, AWAY FROM IT, A CYLINDRICAL FLANGE PROJECTING FROM THE HOUSING AROUND THE OUTER END OF SAID INLET PORT FOR RECEIVING A PERCUSSION IGNITABLE OXYGEN CANDLE, A CUP IN SCREW THREADED ENGAGEMENT WITH SAID FLANGE FOR PRESSING THE CANDLE AGAINST SAID LAST-MENTIONED VALVE TO OPEN IT, SAID CUP PROJECTING FROM THE FLANGE AND HAVING AN OUTER END WALL PROVIDED WITH AN OPENING TO EXPOSE A PORTION OF THE CANDLE, AND A CAP SLIDABLE MOUNTED ON THE PROJECTING PORTION OF THE CUP FOR MOVEMENT TOWARD SAID FLANGE, THE INSIDE OF THE CUP BEING PROVIDED WITH A FIRING PIN IN LINE WITH SAID CUP OPENING FOR STRIKING THE CANDLE TO IGNITE IT WHEN THE CAP IS PUSHED SHARPLY INWARD.