Also Tobin tube. A device for admitting fresh air into a room in an upward direction, invented by Martin Tobin of Leeds.

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[1873.  M. Tobin, Patent Specif., No. 1081. In some cases … I pass a tube … into the apartment, and form or turn the mouth or inlet, so as to give the air … an upward or fountain-like direction.]

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1884.  Billings, Ventilation, etc., 102. Another form of inlet consists in what are often spoken of as Tobin’s Tubes.

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