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Patent

Air sampling device

R Riggs
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TLDR
In this paper, an air sampling device operated solely by compressed air which is conducted through a venturi tube thereby creating a region of reduced pressure for drawing ambient air into the device where particles or gases carried therein are trapped in a filter type device for analysis.
Abstract
This disclosure relates to an air sampling device operated solely by compressed air which is conducted through a venturi tube thereby creating a region of reduced pressure for drawing ambient air into the device where particles or gases carried therein are trapped in a filter type device for analysis. The device includes a manifold having a plurality of fittings each adapted to receive individual sample-collecting chambers whereby several samples may be taken consecutively.

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Citations
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TL;DR: In this article, a device for collecting air-borne dust samples on a membrane in an even distribution which enables X-ray diffraction analysis of the collected samples is presented. But this device is not suitable for indoor applications.
References
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Article for breaking in tobacco pipes

TL;DR: The device of the present invention consists of an article for breaking in tobacco pipes as discussed by the authors, which is an article of simple construction which was found to be effective for the so-called "breaking in" of tobacco pipes to accomplish, in a relatively short period of time.