SU4397A1 - Gas mask - Google Patents

Description

to the patent of V.V. Plotnikov, dated March 7, 1925 (for Article Svd. No. 5894).

On the grant of a patent published January 31, 1928. The patent is valid for 15 years from 31 1928.

The proposed gas mask relates to masks in which it is possible to replace the consumed respiratory box without removing the mask itself.

In FIG. 1 shows an axial section through a mask tee; and FIG. 2 is a section along the line AB of FIG. one.

The mask itself is a rubber helmet with glasses for eyes and a breathing tube to which a respiratory box with antigas substance is attached. To attach the respiratory box, there is a tee, on the sprout 1 of which the end 22 of the rubber breathing tube is fitted; to make the connection more dense, there is an annular thickening 23 on the appendix 1. The other processes 2 and 3, exactly the same, are equipped with cross-pieces b with a hole for the passage of the rod 8 of the spring-loaded valve 10 closing the cone-shaped opening 9. The appendix 3 ends

wider tube 12 with internal cutting 13. The neck 14 of the respiratory box 17 with anti-gas substance has a cross-piece 7, in the center of which the rod 15 is screwed. . Scion 2 is closed by a valve at this time. When the anti-gas substance is used, another respiratory box is screwed into process 2 and, until the new box is screwed in, breathe through process 3, after which box 17 is unscrewed and the mask runs through process 2, and the air passes into opening 19 of the cross.

The subject of the patent.

the process of which 1 is tightly connected to the respiratory box, sizbdkney with a mask, and the other two with a rod 15, serving for sprout 2 and 3, equipped with a j-opening of the valve with screwed spring valves, | -vani box on one or another pasluzhat for alternate connection; tubes.

FIG. one

FIG. 2

IS