The Model H is the precursor of the Model K that was introduced to the armed forces in 1952. It was never provided to the troops as they were still using Model F and G masks. The Model H was completed shortly before the start of the Second World War. Model H- used in the mobilisation before the Second World War. The hose consisted of onepiece and the outlet valve was mounted in the nozzle Among the eyeglasses it had a rubber partition to prevent mirroring. It was an improved version of the Model F. The Model G was introduced in 1937 to the Dutch Armed Forces and remained in use until the Second World War. An exhaust valve was mounted between the lower and the upper hose. The gas mask hose consisted of two parts. Fogging the eyeglasses was prevented by rubbing it with spectacle ointment. The bulbous inner wall ensured a good gas-tight seal on the face. The mask was made of rubber with embedded fabric. The gas mask for riders had a different model carrier and a longer hose. The difference between the gas mask for non-riders and that for cyclists consisted only of the length for the carrier strap. There were three versions of the gas mask F, namely for non-riders, cyclists and riders. The Model F was introduced in 1926 to replace the Model E E, which was stored in mobilization warehouses until 1938. The gas mask cloth was pleated on either side of the eyeglasses. The face piece was made of brown linen and on the inside it had a layer of rubber. It was the first mask to consist of a face piece, a gas mask hose and a filter. The Model E is a gas mask the English invented at the end of WW1, it is called the Small Box Respirator. Model E- used from 1918-1926, then stored till 1938. Model D- never used, idea scrapped before it was done. The Model C was the first Dutch gas mask to have changeable filters. The mouthpiece was made of metal and and had a rubber edge so you it was more tight. The Model C was a muzzle gas mask too, it was very similar to the Model B. It was supplied with glasses to protect the eyes. It didn't have an exhaust valve yet so you could exhale through the filling. It was made of hospital linen, stretched over a frame of wire mesh and equipped with a filling canister filled with soda lime. This gas mask belonged to the type of muzzle gas masks. The mask had added glasses to protect the eyes. The Model A was a primitive gas mask made of a linnen bag filled with soaked compresses covering the mouth and the nose area. Sources: The gas mask and respirator wiki, and this PDF In this post I will be making a full timeline masks the Dutch army has been using since 1917. The Dutch army has used a whole variety of gas mask throughout the 20th century, most gas masks were marked with a letter ranging from A to K.
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