"Air filter" Quotes from Famous Books
 ... Between the rebate and the casement it is a good plan to leave a space of an inch and a half for a movable stretcher-frame holding several layers of "cheese-cloth" to filter the air. The construction of such an air filter is shown at Fig. 7. The glass louvres keep out the wet, and throw off coarse particles of falling soot; and the provision of a movable stretcher permits the cloths to be frequently changed for clean ones—a very important ...
— The Turkish Bath - Its Design and Construction • Robert Owen Allsop
... air filter.* Diagram of a section through the nostrils; shows projecting bones covered with moist membrane against which the air is made to strike by the narrow passages. 1. Air passages. 2. Cavities in the bones. 3. Front lower portion of the ...
— Physiology and Hygiene for Secondary Schools • Francis M. Walters, A.M. |
