. Chemical development Section [and] Mechanical Research and Development Section; summary of achievements, 1917-1918. AlilERICAM TISSOT TYPE kASZInterior View. AMERICAN TISSOT TYP3 MASK Die casting with chin rest» inhalation(clarifying) tubes, exhalation fluttervalve and guard, and breathing tubewhich Gcnnects with canister, assembledin position. smooth-finished intefiorv-an^ causes the mask to fit theface tightly axottad th& bonders, and yet clear the nose infront- The eyepiece frame is molded separately, and cementedto the facepi^ce in a &emi-cured condition. The facepieceis then put on the
. Chemical development Section [and] Mechanical Research and Development Section; summary of achievements, 1917-1918. AlilERICAM TISSOT TYPE kASZInterior View. AMERICAN TISSOT TYP3 MASK Die casting with chin rest» inhalation(clarifying) tubes, exhalation fluttervalve and guard, and breathing tubewhich Gcnnects with canister, assembledin position. smooth-finished intefiorv-an^ causes the mask to fit theface tightly axottad th& bonders, and yet clear the nose infront- The eyepiece frame is molded separately, and cementedto the facepi^ce in a &emi-cured condition. The facepieceis then put on the foraier, the head-harness of rubberstraps attached,.and the whole cured in one operation indry The clarifying tubes and chin rest are of molded rub-ber and assembled at the same time as the die casting and eye-piece frames. The clarifying tubes are the same design usedat present, -and deliver the incoming air directly againstthe eyepiece lenses* The chin rest is made with rather longhorns so as to hold the mask firmly in place. The present Akron Tissot is a further development ofthe ,. mask* The piincipal alterations are the stockine
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashington, bookyea
