Abstract: An automatic regulator for breathing apparatus, comprising a chamber which communicates with the breathing apparatus, including therein an air-dispensing valve, and a chamber which communicates with the environment. Said chambers are sealingly separated from each other by means of a flexible membrane which controls the dispensing valve, while the chamber which communicates with the environment is defined exteriorly by a cover provided with a tongue which is obtained by a partial cut in the front face of said cover and which is resiliently deflected inwards by an external depressing force, so as to deflect said membrane towards the interior of the chamber which communicates with the breathing apparatus and to cause the opening of said dispensing valve.

Abstract: The invention relates to a regulator for breathing apparatus with a first reducing stage and a second reducing stage (2, 6) integral with a moutpiece (4) comprising a chamber (2) communicating with the mouthpiece (4) and a chamber (6) communicating with the surroundings, separated by a membrane (5) which controls the opening and the closure of a dispensing valve provided in a connector member (10) between the first and second stages. To premit the connector member (10) to be mounted in a reliable and easy manner, either on the right-hand and left-hand sides of the second stage of a regulator for a breathing apparatus, the chamber (2) communicating with the mouthpiece (4) is provided both on the right-hand and left-hand sides with a mating seat (9) for the connector member (10) between the two stages and said member (10) has two dispensing holes (15) of the same size, a closing and/or throttling means (11) for the dispensing hole (15) away from the mouthpiece (4) being provided at each mating seat (9).

Abstract: A floating piston member formed with an axial conduit communicating with the air-feeding conduit from the first stage of reduction of an air bottle, is provided at one end with a valve seat. The floating piston member may be displaced between a first operative position, in which it is pushed by air pressure against the seal of a valve member against the action of a spring, and a second position wherein it is separated and moved away from the seal of the valve member by the action of the spring. The valve member is controlled by the manostat diaphragm of the breathing apparatus, through a suitable transmission and is urged constantly toward the valve seat by a spring.

Abstract: A portable shooting weapon comprises a releasable firing mechanism and a cooperating trigger and pin for releasing the firing mechanism. The trigger actuates the pin when the trigger is moved by a finger of a shooter. The trigger comprises a first, downwardly extending body portion fulcrumed to the shooting weapon. A second body portion is slidingly supported in the first body portion so that the second body portion is shiftable in a fore and aft direction with respect to the first body portion. The first and second body portions of the trigger are connected together in an easily disengageable manner at a number of pre-set relative positions. The second body portion of the trigger projects beyond the first body portion and the extent of projection is adjustable by disengagement and movement of the second body portion of the trigger with respect to the first body portion.