Fleuss and Davis until 1905


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H.A Fleuss & R.H. Davis

Date: 12 Januari 2003

First oxygen rebreather

JW. Bech


Siebe Gorman & Co





Land of origin

United Kingdom


Special Note: 

First CCR


User group



Part no:



Working principle

Manual operated *


Gas type



Cylinder volume



Max. cylinder pressure

30 bar


Material of cylinder



Counterlung inspire

In front of the diver


Counterlung exhale



Dive time duration



Operating temperature



Magnetic signature



Weight ready to use in Air



Weight ready to use in water






Scrubber material

Tow, impregnated with a solution of caustic potash









Scrubber/bottles on the back



Dual hose












  *R.H. Davis introduced the auto addition system later .





If you have any information to add this sheet please mail it to jw.bech@quicknet.nl References to source and names will always be added!  


Info found: Book: R. H. Davis Deep Diving and Submarine Operations
Many thanks to Hans van Leeuwen for his contribution on this part!


Origin: http://www.therebreathersite.nl




 H.A. Fleuss van de Britse firma Siebe, Gorman & Company ontwikkelde in 1878 een zuurstof rebreather die gebruik maakte van een mengsel van ruwe delen van hennep en kalium om de uitgeademde koolzuur te absorberen. Sir Robert H. Davis werkte met Fleuss samen om het apparaat te verbeteren door gebruik te maken van meer effectieve koolzuurgas absorberende stoffen, stalen cilinders voor de zuurstof en een automatische klep. Deze uitrusting werd gedurende de eerste wereldoorlog gebruikt als bescherming tegen gifgas.





From: Deep Diving and Submarine operations:

To the late H.A. Fleuss in association with Siebe, Gorman and Co, therefore, belongs the credit for being the first design (in 1878) the first really practicable selfcontaining breathing apparatus, embodying air regeneration devices, for work underwater or in poisonous atmosphere. R.H. Davis, who entered Siebe, Gorman and Co’s service in January, 1882, worked fors ome years in collaboration with Fleuss until the latter’s retirement. Notable early operations in wich the self-contained diving-dress at the flooded Severn Tunnel in 1882. The story of how the tunnel was saved by Siebe, Gorman and Co’s diver, Alexander Lambert is written elsewhere on this web. For some years prior to 1902 interest in apparatus of this type had waned; there was practically no demand for it, and during that period little research was carried out. Davis, however, having faith in its possibilities, resuscitated it, and invited Fleuss, who had in the meantime given up work in this field, to collaborate with him in improving and developing it, with the result that, for some years before the outbreak of war, Siebe, Gorman and Co. Ltd possessed the only British apparatus of the kind – thoroughly reliable, efficient and well-tried apparatus- the PROTO and SALVUS wich were adopted by the British, American and other of the Allied armies for mining, tunnelling and other  military operations in poisonous air, and wich did much work of vital importance. Similary, R.H. Davis  designed oxygen breathing apparatus for airmen flying at great altitudes. This also was adopted by the Air Ministry.
Thus, Siebe, Gorman and Co. Ltd. Were responsible for producing the whole of the self-contained breathing apparatus for the Brittish and other armies mentioned, diving apparatus for the British Navy and Army, and oxygen breathing apparatus for the Royal Air Force, besides a variety of special work for all the services.

Fleuss first apparatus made by Siebe, Gorman and Co. Ltd in 1878 consisted mainly of a mask of rubber proofed fabric covering the whole face; a breathing bag and a copper cylinder, charged with oxygen compressed to 30 atmospheres, both carried on the back behind the breathing bag. Later the breathing bag was arranged in front of the wearer. The oxygen cylinder and CO2 absorbent chamber remaining on the back.




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