Abstract: An initiator cartridge having a close tolerance time delay mechanism to sctively provide substantially the same predetermined time delay for cartridge propellant ignition at extreme high and low temperatures as at an ambient temperature. A delay element casing has a body that contains a plurality of delay composition columns of predetermined varying lengths. A primer retaining dial is rotatably mounted in the delay case and has a central rearmost primer and a passageway for selectively placing one of the delay columns in fluid communication with the primer.

Abstract: Lap belt tightening apparatus for aircraft seat belts and which becomes oational immediately prior to occupant seat ejection from a disabled aircraft. The apparatus includes simplified means for providing gas powered actuation to fluid cylinder controlled belt-tightening mechanisms and provides an economical arrangement of minimized weight.

Abstract: A gas generating cartridge case having a close tolerance delay ignition u intermediate ignition train elements and which functions with reliable accuracy and is insensitive to large temperature variations or extremes. An aluminum cartridge case, carrying a gas generating charge, has a retainer secured in its rearward end. The retainer has a base portion containing a percussion primer and a cylindrical sidewall portion containing the delay ignition unit that includes a spool having ignition train elements in its end flanges and a burnable fuze delay wire secured to the spool flanges and interconnecting the ignition train elements. The spool and retainer base portion are longitudinally spaced to provide a cavity therebetween for precluding primer overpressurization.