. Chemical development Section [and] Mechanical Research and Development Section; summary of achievements, 1917-1918. used in theFrench Fabric mask, being held in place by lugs which arebent under the glass. The chin rest is made of aluminum andcovered with a section of rubber tubing. The angle tube isdesigned as a casting, but is hand-made, embodying all theprinciples of the present Tissot type die casting. The headharness is made of strips of soft rubber so arranged that tvostraps pass around the back of the head while a third connectsthese two with the top of the mask in Tissot.
. Chemical development Section [and] Mechanical Research and Development Section; summary of achievements, 1917-1918. used in theFrench Fabric mask, being held in place by lugs which arebent under the glass. The chin rest is made of aluminum andcovered with a section of rubber tubing. The angle tube isdesigned as a casting, but is hand-made, embodying all theprinciples of the present Tissot type die casting. The headharness is made of strips of soft rubber so arranged that tvostraps pass around the back of the head while a third connectsthese two with the top of the mask in Tissot. The Bureau of kines Tissot, as it is commonly I H IW ?????»HMI I I ? I ? »l !? known, is a further development of the original mask describedabove, ant represents the development between October 1917,and April 1918, when the mask was tuiTied over to the GasDefense Division to be put into production. The facepieceis made of two layers of calendered stock, an inner layer ofsoft, elastic rubber, and an outer protective layer of toughblack stock. It is cured on an aluminum form, which gives a -66-. AMERICAN TISSOJ? TYPJi kiASKSide View.
Size: 1322px × 1890px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashington, bookyea
