The Sh-1 (Russian: шлем/shlem "helmet", number 1 was added retrospectively) is an interwar-era soviet mask taking design points from the Zelinsky Kummant. The GT-3 civilian, DP-1 children gas mask and the facepiece of the KIP-1 were based on this mask.
Overview[]
Helmet styled rubber mask with two round eyepieces and a "finger horn" which allowed the user to insert a finger inside to wipe the lenses. The color of the facepiece is usually gray or orange but there are black ones as well. The valve system is slightly updated compared to the TT-4 but it still features a flutter exhale valve. The hose is fixed and it has a 40x4mm thread (later standardized as GOST) at the end of it. There was a variant of the Sh-1 with a membrane.
Filters[]
T-5 filter[]
The T-5 filter was introduced in the 1920s with the TT-4, TT-S (updated version of the TT-4), Sh-1 and then later with the MOD O-8 in the BN T-5 kit. They stopped producing the T-5 in the late 1930s. Early T-5s had no thread and different ridges on the side. Then T-5s made in the early 1930s had a thread and different ridges. Around 1935? the T-5 was redesigned to have a shorter thread and different ridges on the side. T-5s were serviced until at least 1942.
T-Ch filter[]
The T-Ch was introduced in 1935, originally used with the O-8 and Sh-1 in the BN T-Ch kit. Early T-Ch's had an inlet valve at the top intake. Later ones are missing this inlet valve. But later was used with the ShM-1 in the BN T-Ch kit. The T-Ch saw use till at least 1943. Some T-Ch's were produced at the LMZ factory (Ленинградский Металлический Завод - Leningrad Metal Plant). T-Ch's frequently have air tight check stamps on them, filters were checked for air tightness until 1945.
Bag[]
M1928/1931 bag[]
The M1928/1931 bag is made of canvas, the M1928/1931 bag has a pocket for the facepiece and a pocket for the filter. The M1928/1931 bag had springs (or blocks) on the bottom of the filter pocket so the filter intake wouldn't get shut. The M1928 bag is closed by 2 snap studs, the M1931 is closed with a single button or two buttons.
Economy M1928[]
The economy variant of the M1928 bag is made of lower quality material and instead of 2 snap studs, its closed with a button. Economy M1928 bags were made during The Second World War.
Gallery[]
