helmet (of a respirator)

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• PH helmet — The P helmet, PH helmet and PHG helmet were early types of gas mask issued by the British Army in the First World War, to protect troops against chlorine, phosgene and tear gases. Rather than having a separate filter for removing the toxic… …   Wikipedia

• Hypo helmet — The Hypo helmet or British Smoke Hood (its official name) [cite web | url = http://www.westernfrontassociation.com/thegreatwar/articles/weapons/gasapparatus.htm | title = The Apparatus Of Gas Warfare On The Western Front In The Great War | work …   Wikipedia

• gas helmet — noun a protective mask with a filter; protects the face and lungs against poisonous gases • Syn: ↑gasmask, ↑respirator • Hypernyms: ↑mask * * * noun : gas mask * * * gas helmet …   Useful english dictionary

• Chemical weapons in World War I — A poison gas attack using gas cylinders in World War I. The use of chemical weapons in World War I ranged from disabling chemicals, such as tear gas and the severe mustard gas, to lethal agents like phosgene and chlorine. This chemical warfare… …   Wikipedia

• Poison gas in World War I — The use of poison gas in World War I was a major military innovation. The gases ranged from disabling chemicals, such as tear gas and the severe mustard gas, to lethal agents like phosgene and chlorine. This chemical warfare was a major component …   Wikipedia

• Gas mask — A gas mask is a mask worn over the face to protect the wearer from inhaling airborne pollutants and toxic materials. 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 …   Wikipedia

• Julius Jeffreys — (1800 1877) was a British surgeon, writer, inventor of the respirator, and was a pioneer in the development of early air conditioning systems.Early lifeJulius Jeffreys was born on September 14th, 1800 at Hall Place, Bexley, Kent, England, where… …   Wikipedia

• Timeline of diving technology — This is a timeline of underwater technology. The entries marked ## are about decompression tables.[1] Contents 1 Pre industrial 2 19th century 2.1 Rebreathers appear …   Wikipedia

• Predator technology — The following is a list of equipment and weapons utilised by the fictional Predators from the Predator franchise. The Predators are a highly advanced technological species, evident through their capacity for interstellar travel and their vast… …   Wikipedia

• Diving regulator — and Octopus Other names Demand valve Uses Reduces pressurized breathing gas to ambient pressure and delivers it to the diver Inventor Manuel Théodore Guillaumet (1838), Benoît Rouquayrol (1860) …   Wikipedia

• Der Gaskrieg während des Ersten Weltkrieges — In diesem Artikel oder Abschnitt fehlen folgende wichtige Informationen: dieser Artikel enthält unzureichende Abschnitte, z. B. im Kapitel Hauptkampfstoffe, Produktionsmengen, Wirkungsweisen der teilweise nur aus Überschriften besteht und keinen… …   Deutsch Wikipedia