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Contents 1 Siebe plc 2 Timeline of Siebe plc 3 Product List 3.1 Rebreather equipment 3.2 Other items 4 External links

Siebe Gorman Ltd was a British company which developed diving equipment and breathing equipment and worked on commercial diving and marine salvage projects. The company advertised itself as 'Submarine Engineers'. It was founded by Augustus Siebe and his son-on-law, Gorman. Siebe Gorman has closed down.

It was notable for developing the "closed" diving helmet of the standard diving dress and associated equipment. As the helmet was sealed to the diving suit, it was watertight, unlike the previous "open" helmet systems. The new equipment was safer and more efficient and revolutionised underwater work from the 1830s.

Standard diving suit equipment was their main manufacturing operation, producing diving helmets in copper and brass. They also made frogman's equipment for the British armed forces during World War 2, and later, sport scuba gear. See makes of rebreather.

Heinke Ltd in London also made diving gear and had connections with Siebe Gorman. See this link.

The non-diving engineering side of Siebe Gorman which latterly became Siebe plc carried the Siebe name until it merged with BTR to form Invensys in 1999.

See also Timeline of underwater technology.

• Early 19th century: After the Napoleonic War Augustus Siebe moved to London in England and settled at 5 Denmark Street in Soho in London, where he became an engineer.
• mid 1941: Siebe's factory in Lambeth was bombed during World War II.
• 1941: The company, already planning to leave London, moved to Chessington, Surrey and resumed manufacturing.
• 1948: Siebe Gorman was making aqualungs: see Aqua-lung#"Tadpoles".
• around 1950: Peak production of Standard Diver Dress.
• 1955 or after: Siebe stops making Standard Diver Dress.
• 1960's: Siebe started making scuba gear aimed at the public market, although they had made it earlier for work divers and the Navy. They also continued to make diving bell equipment and pressure chambers.
• 1961: Siebe Gorman takes over Heinke.
• 1975: Siebe Gorman moves to Cwmbran in Wales in 1975 and concentrates on firefighter's breathing equipment.
• 1985: Siebe acquires CompAir.
• 1990: Siebe acquires The Foxboro Company, (industrial automation).
• 1992: Siebe was still producing an escape gear system..
• 1994: Siebe acquires Triconex.
• 1995 October: Siebe Gorman still had their premises at Cwmbran. They abandoned it some time after that.
• 1997: Siebe acquires APV plc (vessel manufacturer: plant not marine).
• 1998: Siebe acquires Eurotherm, Wonderware, and SimSci (industrial controls).
• 1999: Siebe acquires Esscor.
• 1999: BTR and Siebe (briefly BTR Siebe) merge to create Invensys.

This is a partial list of some of their rebreather equipment covering military and civilian, diving and non-diving. Taken from OXYGEN REBREATHER DATABASE, and afterwards edited.

• Aircrew Rebreather "Stelox"
• Aerorlox (mine rescue, liquid oxygen)
• Siebe Gorman Novus SCBA
• Amphibian Mark I to Mark IV
• ATEA Siebe Gorman
• Universal Rebreather or CDBA (Clearance Diver Breathing Apparatus)
• DSEA Siebe Gorman
• FireOX
• Fleuss-Davis SCUBA apparatus (see Henry Fleuss)
• Individual scrubber
• Lungovox (a short-duration industrial oxygen rebreather in a backpack box)
• Minox
• MRS suit
• Oxylithe
• P-Party (Mark I, Mark II, and Dutch )
• Proto
• Proto ten
• Proton
• Savox
• Sladen suit (as used by the British Human torpedo crews)
• Salvus A.N.S
• Watchkeepersuit

• Gasmasks.
• Drysuits (with tradename "Frogman" when sold to the public market).

• Siebe Gorman archive photographs at Trinity Marine
• Siebe Gorman.