PH helmet
The P helmet, PH helmet and PHG helmet were early types of
. Rather than having a separate filter for removing the toxic chemicals, they consisted of a gas-permeable hood worn over the head which was treated with chemicals.The P (or Phenate) Helmet, officially called the Tube Helmet,
It had flannel layers of cloth-dipped in
The PH Helmet (Phenate Hexamine) replaced it in January 1916, and added
The PHG Helmet appeared in January 1916 and was similar to the PH Helmet but had a facepiece made of rubber sponge to add protection against tear gas. Around one and a half million were produced in 1916–1917.
It was finally superseded by the Small box respirator in 1916, which was much more satisfactory against high concentrations of phosgene or lachrymators.
References
- ^ "Apparatus Of Gas Warfare". The Western Front Association. Archived from the original on 27 July 2009. Retrieved 17 October 2011.
- ^ CWS Barker (1926). "Gas mask development". Chemical Warfare. 12 (7): 11–15. Archived from the original on 2 May 2007. Retrieved 8 May 2006.
- ^ The Riddle of the Rhine: Chemical Strategy in Peace and War, Victor LeFebure, at Project Gutenberg
- ^ "History of the U.S. Army's protective mask" (PDF). Archived from the original (PDF) on 20 July 2006. Retrieved 17 October 2011.
External links