Device for testing the tightness of fit of gas masks

摘要

A device for testing the tightness of fit of a gas mask which has a tubular respiratory air inlet and a tubular exhaling air outlet, which is applied over the face of a wearer, comprises a bag-like headpiece which is engageable over the wearer's head and is preferably made of a transparent material, such as plastic, and which is provided with an opening for the wearer's neck and an opening for the tubular air inlet of the gas mask with a resilient rim for tightly engaging these parts when the headpiece is positioned on the wearer's head. The headpiece also includes a tubular exhaling air connection piece which is formed on the interior of the headpiece in a position to be engaged over the tubular exhaling air outlet of the gas mask. The connection piece includes an uptake passage for the passage of air directly from the mask outwardly through the passage. The passage may be connected, for example, to a measuring bag for collecting the gas for subsequent passage of the gas through a measuring tube to determine the quantities of testing gas which are present in the respiratory air. The measuring tube may also be placed directly in the uptake passage of the connection piece for the measuring of the leakage gas which is detected from the respiratory air flow from the gas mask.