Posted some information that was at least new to me in the book section of the forum. As the website also has what I would call rare photos of the Lamberten device I thought I would add a link in this section where you can download some large photos of the device. I would start with the first 4 photos. These are followed by details and schematics. I believe these photos are from the personal papers of Dr Lambertsen that were donated by the family after his death so they can be seen by all.
http://archive.rubicon-foundation.org:8 ... +O2&etal=0
Anyone interested in 1940's underwater demolition should take a look at "Lambertsen and O2: beginnings of operational physiology".