Although some form of reaction may take place, it is not necessary the method may work by attractive charges. This can be used to remove both particulate and gaseous hazards. Some masks have one or two compact air filter containers screwed onto inlets, while others have a large air filtration container connected to the gas mask via a hose that is sometimes confused with an air-supplied respirator in which an alternate supply of fresh air (oxygen tanks) is delivered.Ībsorption is the process of being drawn into a (usually larger) body or substrate, and adsorption is the process of deposition upon a surface. Later, stronger polycarbonate came into use. Panoramic lenses were not popular until the 1930s, but there are some examples of those being used even during the war (Austro-Hungarian 15M). The later Triplex lens style (a cellulose acetate lens sandwiched between glass ones) became more popular, and alongside plain cellulose acetate they became the standard into the 1930s. Glass and mica were quite brittle and needed frequent replacement. The first gas masks mostly used circular lenses made of glass, mica or cellulose acetate to allow vision. Many filters provide protection from both types. Filters against specific chemical agents can last up to 20 hours.Īirborne toxic materials may be gaseous (for example, chlorine or mustard gas), or particulates (such as biological agents). Most combined gas mask filters will last around 8 hours in a biological or chemical situation. The gas mask only protects the user from digesting, inhaling, and contact through the eyes (many agents affect through eye contact). Most gas masks are also respirators, though the word gas mask is often used to refer to military equipment (such as a field protective mask), the scope used in this article. The mask forms a sealed cover over the nose and mouth, but may also cover the eyes and other vulnerable soft tissues of the face. Army soldier ( USAWC photo) Indian muleteers and mule wearing gas masks, France, FebruA Polish MUA gas mask, used in the 1970s and 1980sĪ gas mask is an item of personal protective equipment used to protect the wearer from inhaling airborne pollutants and toxic gases. 1915 Zelinsky–Kummant protivogaz, designed in 1915, was one of the first modern-type full-head protection gas masks with a detachable filter and eyelet glasses, shown here worn by U.S. For peacetime uses, including masks designed to filter gasses and particles, see elastomeric respirator. Please study the pictures provided.For the mask used to inhale the gas through, see Mask § Functional masks. The overall condition of all the items is good with some signs of age and service wear which is to be expected. The original string which is used to fasten the haversack onto the wearers chest whilst worn at the 'alert' position is still present too - These are quite often missing on examples offered for sale today. The original cotton waist was also still present inside the bag as can be seen in the pictures. Inside the bag cardboard sections have been fitted to give the bag a square shape, making it smarter when worn. The respirator haversack is made from a khaki coloured duck cotton and bears the makers name of 'M & Co' as well as the 1941 date. The head harness is also marked and bears the date of March 1941. The gas mask itself is a nice example with good clear date and makers name 'Avon'. Army Council Instructions relating to gas were regularly changed and updated leading to gas masks being updated throughout the war, hence the variety of dates found here. This original set consists of a July 1940 dated black rubber face piece(December 1940 to the front metal disc), Brick red 4A canister dated April 1941 and MK VII Haversack dated 1941. An original early WW2 British Army Chest Respirator, often referred to as a 'gas mask'.

Gas mask ww2 authentic