:''Distinguish from

aerophor An aerophor (sometimes spelled aerophore, aerophon, or aerophone) is a device designed to provide an auxiliary breath supply to aid players of wind instruments in performing extended notes or passages. It was invented in 1912 by Bernard Samuels, a ...

(or aerophore) (a device to assist musicians playing

wind instruments A wind instrument is a musical instrument that contains some type of resonator (usually a tube) in which a column of air is set into vibration by the player blowing into (or over) a mouthpiece set at or near the end of the resonator. The pitch ...

) and from

aerophone An aerophone is a musical instrument that produces sound primarily by causing a body of air to vibrate, without the use of strings or membranes (which are respectively chordophones and membranophones), and without the vibration of the instrume ...

.''

The Blackett's Aerophor is a nitrox semi-closed-circuit

rebreather A rebreather is a breathing apparatus that absorbs the carbon dioxide of a user's exhaled breath to permit the rebreathing (recycling) of the substantial unused oxygen content, and unused inert content when present, of each breath. Oxygen is a ...

with liquid gas storage made in England from 1910 onwards for use in

mine rescue Mine rescue or mines rescue is the specialised job of rescuing miners and others who have become trapped or injured in underground mines because of mining accidents, roof falls or floods and disasters such as explosions. Background Mining la ...

and other industrial uses. It was used until the 1950s. "Aerophor" is from

Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...

αεροφορος = "air-carrier". Its breathing bag was on the chest, of rubber, in a strong leather case. The other parts were in a backpack. It had two corrugated breathing tubes coming out of the

backpack A backpack, also called knapsack, schoolbag, rucksack, pack, booksack, bookbag, haversack, packsack, or backsack, is in its simplest frameless form, a fabric sack carried on one's back and secured with two straps that go over the shoulders; b ...

. Its duration on a fill was 2 hours. It had: * A heat-insulated tank containing 5½ pounds of liquid

nitrox Nitrox refers to any gas mixture composed (excepting trace gases) of nitrogen and oxygen. It is usually used for mixtures that contain less than 78% nitrogen by volume. In the usual application, underwater diving, nitrox is normally distinguished ...

containing at least 50% of

oxygen Oxygen is a chemical element; it has chemical symbol, symbol O and atomic number 8. It is a member of the chalcogen group (periodic table), group in the periodic table, a highly reactivity (chemistry), reactive nonmetal (chemistry), non ...

, which had to be filled immediately before use. * At the bottom of the backpack, a large canister filled with 2 pounds of what one description called "potash" and another description "soda". Colonel Wiliam Cuthbert Blackett, who had previously criticized rescue apparatus as being too complicated for practical use,{{Cite book , last1=Gray , first1=Patrick , url=https://books.google.com/books?id=qeaLEAAAQBAJ&dq=%22Blackett%22+%22Aerophor%22&pg=PA383 , title=Standard of Living: Essays on Economics, History, and Religion in Honor of John E. Murray , last2=Hall , first2=Joshua , last3=Herndon , first3=Ruth Wallis , last4=Silvestre , first4=Javier , date=2022-09-23 , publisher=Springer Nature , isbn=978-3-031-06477-7 , pages=383–386 , language=en introduced this Aerophor in the

Durham Durham most commonly refers to: *Durham, England, a cathedral city in north east England **County Durham, a ceremonial county which includes Durham *Durham, North Carolina, a city in North Carolina, United States Durham may also refer to: Places ...

area in 1910, where he was part of the Durham and Northumberland Collieries Fire and Rescue Brigade. It was improved by Messrs G.L. Brown and Frederick P. Mills. All or some of them were made by Guest and Chrimes Ltd. of

Rotherham Rotherham ( ) is a market town in South Yorkshire, England. It lies at the confluence of the River Rother, South Yorkshire, River Rother, from which the town gets its name, and the River Don, Yorkshire, River Don. It is the largest settlement ...

References

External links

A Blackett aid to miners
brief description of Col. William Cuthbert Blackett's work Rebreathers Industrial breathing sets