- These unique pictures where sent to me by Bart of
http://www.gasmasks.net. The rebreather shown here is known as a
- The designer Waldemar Kops was part of the United Stated
Chemical Warfare Service. He was a mask designer who "invented"
several different types of gas mask face pieces during and after
WWI. So, his masks would be seen from 1916 through the 1920s.
- One of his most successful designs was used in the military for
gas masks, and also in industry for several different types of
protective masks, including the rebreather as shown here. Waldemar
Kops most likely only designed the face part, and the rest of the
rebreather is most likely an invention of MSA or another mining
company. The same designer was part in the development of the RFK
masks with a production a three million pieces! (RFK = Richardson,
Flory and Kops)