Also Tobin tube. A device for admitting fresh air into a room in an upward direction, invented by Martin Tobin of Leeds.
[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.]
1884. Billings, Ventilation, etc., 102. Another form of inlet consists in what are often spoken of as Tobins Tubes.