The laws of health / by W.H. Corfield.

  • William Henry Corfield
Date:
1896
Catalogue details

Licence: Public Domain Mark

Credit: The laws of health / by W.H. Corfield. Source: Wellcome Collection.

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    rooms with which it communicates. Where gas is burned and a special tube is provided to carry away the products of combustion, either this may be large enough to act as an exit shaft for the air of the room, or, as is the case with sunlight burners now used for lighting large rooms, a shaft placed round the tube which carries off the products of combustion and opening into the upper part of the room may be contrived for this purpose ; and in a large building, lecture room, or theatre, tubes may be constructed to carry the products of combustion of each gas burner into this shaft and so increase the upward current of air inside. By these means each gas burner is made to help in the ventilation of the room instead of helping to render the air impure. In the McKin- nell ventilator, which is very well suited for small rooms having no rooms above them, there are two tubes, one inside the other, which pass through the ceiling into the outer air. A rim is placed round the lower end of the inner tube at a short distance below the ceiling and parallel to it, while the upper end of this tube is carried higher into the air than the upper end of the outer tube. The heated air of the room then escapes through the inner tube (and this escape is much facilitated if a gas jet be placed
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