. Chemical development Section [and] Mechanical Research and Development Section; summary of achievements, 1917-1918. UKIVSRSITY MASKSide UUIVERSIXy li&SK Interior view showing one-piecemolded clarifying tubes and rubberflap over nose. that in order to larovide an adequate filter to remove thevarious toxic smokes which wer« being used in increasingamounts, i«>)Uld entail the addition of so muph weight andlareathing resistance in the canister that this worlc wasgiven up after a few experimental models had been made. for Army Masks. Standard Box Bespirator Canister. When th
. Chemical development Section [and] Mechanical Research and Development Section; summary of achievements, 1917-1918. UKIVSRSITY MASKSide UUIVERSIXy li&SK Interior view showing one-piecemolded clarifying tubes and rubberflap over nose. that in order to larovide an adequate filter to remove thevarious toxic smokes which wer« being used in increasingamounts, i«>)Uld entail the addition of so muph weight andlareathing resistance in the canister that this worlc wasgiven up after a few experimental models had been made. for Army Masks. Standard Box Bespirator Canister. When this experiment wasstarted^ about the first of August* 1917, the army canisterwas in production as a S-3/8 x 4-5/8 oval, corrugated can,7 hi^, with valve seat in the canister bottom and nozzlesoldered to the top. Inside ..a fine wire dome screen aboutl-l/2 high covered the full are of the bottom, and above thi£were packed three layers of charcoal - soda lime mixture,the layers being separated by cotton wadding pads. Above themixture was a turkish toweling upon which was a stiff,flat screen, and 1he whole held down by two rec
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashington, bookyea
