by Jan Willem Bech | Gallery
May 2006. I am very pleased to show you pictures of our divingtrip to the Red Sea. This trip had no other goal than looking at the wonders of nature. We left Amsterdam Thursday 18 may 2006 and arrived at Port Galet near Marsa Alam, Egypt during the evening. Marsa Alam...
by Jan Willem Bech | Database OX JAP
World’s most compact semi-closed rebreather The Japanese EOBA (Enriched Oxygen Breathing Apparatus) is in fact a semi-closed system. This is because the mix in the mini cylinders contains 80% oxygen and 20% Nitrox. The reason for this is that you can dive a...
by Jan Willem Bech | Database OX USA
The Westinghouse 9-SO-R2 Min-O-Lung The 9-SO-R2 MIN-O-LUNG was produced by the Westinghouse Electric Corp of Annapolis, MARYLAND, in 1964. Westinghouse later purchased most of Emersons underwater contracts and designs, including their mixed gas closed...
by Jan Willem Bech | Database OX USA
Manual controlled mass flow oxygen rebreather picture thank to P. Duffy Emerson 1963 9-SO-3 oxygen rebreather This page describes the brother of the Scuba-lung from Emerson. The identical rebreather distinguishes itself by a different gas dosing system. The 9-SO-3...
by Jan Willem Bech | Database OX USA
On demand Emerson oxygen rebreather Here is a page about a unique rebreather with an on-demand system built into the contralong. This specific model with the abstract name 9-SO-21 was also called Scuba-Lung. The oxygen system with separate contralungs had a double...
by Jan Willem Bech | Database SCR USA
US Navy workhorse Emerson was a major influence in the development of US Navy UBA’s (underwater breathing apparatus) during the 1950-60’s, they collaborated with Dr Lambertsen to mass produce his Lambertsen Amphibious Respiratory Unit (LARU), the LARU (not to be...
by Jan Willem Bech | Database ECCR USA
World first ECCR with galvanic sensor ‘Scuba Lung’ Text: Jan Willem Bech 30-06-2022 picture thanks to Sharon Readey In the year I was born, 1961, a 27-year-old student in Massachusetts tested his revolutionary invention and found it successful. Alan...
by Jan Willem Bech | Database OX USA
WWII LARU oxygen rebreather Dr. Christian J. Lambertsen received a B.S. Degree from Rutgers University in 1938 and a M.D. Degree from the University of Pennsylvania in 1943. During his medical school period, he invented and first used forms of the initial U.S....
by Jan Willem Bech | Database OX USA
A rescue mask that has been in use for more than 75 years The Chemox is a chemical-Oxygen , closed-circuit apparatus with a disposable KO2 canister. It was certified by the USBM in 1946 as a 1-hr breathing apparatus. Because it was certified for less than...
by Jan Willem Bech | Database OX USA
Gibbs 2 hours apparatus Bureau of Mines USA Text Jan WIllem Bechrewrite june 2022 Photo thanks to Mr. Dave Johnson of http://miningartifacts.homestead.com/ Working principle of the GIBBS TWO HOUR APPARATUS Introduction The Gibbs 2-hour apparatus was designed by...
by Jan Willem Bech | Vademecum
Diving and behavior of gases First Gas Law Robert Boyle discovered as early as 1662 that the pressure and volume of a gas had a constant relationship. His invention is also called the first gas law. French physicist Edme Mariotte (1620-1684) discovered the same law...
by Jan Willem Bech | Vademecum
Switchable mouthpieces for rebreathers. A first step towards the modern bailout valve A Bail Out Valve (BOV) is a Diver Surface Valve (DSV) that has a second stage regulator incorporated into the mouthpiece and is connected to either the onboard diluent tank or the...
by Jan Willem Bech | Database ECCR USA, History
us Controlling your breath with polariographic oxygen sensors in 1968 This article, written by Walter Starck, was made possible thanks to the cooperation of Mr R. Bakker and with photos by Sharon Readey. I would like to thank them very much for that. Any additional...
by Jan Willem Bech | Vademecum
A rebreather must pass exhaled gas through a scrubber to remove the CO2. The consequence of this is that the gas flow must be directed in a certain direction. Only on a pendulum breathing apparatus will the gas pass through the scrubber in a pendulum fashion,...
by Jan Willem Bech | Vademecum
Rebreather FFM for additional safety and comfort When diving with rebreathers, the use of a full face mask is an important safety feature. The prerequisite is that the user is properly instructed in how to use the mask. Not all masks that are suitable on land can also...
by Jan Willem Bech | Monitor
The Voyager is born like a modular machine that has five evolutionary steps. The philosophy of the distribution of the machine envisage that the diver, who already has a good base of knowledge’s in the practical and theoretical diving techniques, can develop his...
by Jan Willem Bech | Monitor
Passive addition rebreathers are used more and more. There have been several developments recently. The latest to add to the list is the Tourill MK 1.5. The rebreather is a nice German design that offers a large group of people access to this kind units. The very...
by Jan Willem Bech | Monitor
Recently I received some beautiful photos from Michael Kuwilsky. It concerns a small German company from Ainring called TaucherBiebl. TaucherBiebl produced rebreathers of the Semi-Closed type on a small scale. Unfortunately, little is known about the rebreathers at...
by Jan Willem Bech | Monitor
Submatix a German manufacturer from Erfurt has been marketing rebreathers since 2003. Over the past almost 20 years, they have brought a wide range of products to the market. The SCR100 line was followed by the Quantum-line and side-mounted rebreathers. Also a nice...
by Jan Willem Bech | Database ECCR USA
Back to ‘The Monitor’ This page is dedicated to the Steam Machines SM1600 rebreather. The relative rare rebreather, a modified MK15, won’t be often seen in Europe. Stefan Besier did it again! He offered me this document and shows his great skill in...
by Jan Willem Bech | Monitor
In 2005 the rEvo rebreather was produced in numbers in Belgium. the rEvo rebreather has, after much research, developed into a very innovative rebreather that is used all over the world. In the very beginning the following article came about thanks to Paul Raymakers...
by Jan Willem Bech | Monitor
The article published below concerns a rebreather designed by Peter Readey. Grant Graves sent me the information below at the time. A nice fact is that I learned later that PRISM stood for Peter Readey Incredible Steam Machines. Today, the Prism rebreather has evolved...
by Jan Willem Bech | Monitor
DCCCR….. what is that? I just got used to OC/DSV-CCR-SCR-PVAR-ADV-MCCR-YBOD-FFM and even a few more abbreviations.Now a new one ” Diver Controlled Closed Circuit Rebreather”. It made me wonder what was behind that..I contacted Andy Fritz, managing...
by Jan Willem Bech | History
“In memory of Bruce D. Omholt, a never forgotten friend” This article was written by Sharon Readey about the technology of the Nautilus ECCR. It is an ode to Bruce Omholt who developed this rebreather. Peter Readey of SMI helped with the development of...
