Rensselaer Union, Volume 7, Number 37, Rensselaer, Jasper County, 3 June 1875 — A New Mode of Ventilation. [ARTICLE]

A New Mode of Ventilation.

The London Times recently gave an account of a mode of ventilation adopted by Mr. Tobin, a retired merchant of Leeds, and which rests on the principle that a narrow stream of air can be sent up through lighter air like the jet of a fountain through the ordinary atmosphere by atmospheric pressure from outside, and that when it reaches the ceiling it will be reflected off in all directions, just as the water falls back in a number of infinitesimal rills, ana so melt away very gradually into the less pure air of the room before persons who need it. The modus bperandi is to introduce vertical tubes communicating with the outer air in parts of a large room or public building where people are not likely to sit or stand, tubes rising say four or five feet above the floor. Directly the air in the room begins to be rarified the pressure of the air outside sends streams of air up these tubes, which continue to rise in narrow streams just like jets of water, and without dispersing till they reach the ceiljpg, where they are reflected back in spray, as it were, of pure air, spray which mixes very gradually indeed and so as to avoid all draft with the rarefied air of the room, and gradually expels all the bad air by way of the chimney. The system seems to have worked alinost miraculously in the Leeds Borough Police Court and also in the Liverpool Police Court, whose Stipendiary Magistrate, Mr. Raffles, has borne the most grateful testimony to the results of the experiment, and Mr. Tobin is now engaged in introducing it into London.