By sucking air out of tbe mct'or car a device which engineers call the "elephant's trunk" tests the tightness of car bodies. The rate at which air from the outside ruslies in to replace that drawn out is shown on two instruments. thus sliowing how tightly doors and windows are fitted, and how well insulating materials do their work. The elephant's trunk, a length of noncollapsible hose several inches in diameter, connects with one window of the ear being tested. All other windows and doors are closed. A powerful suetion fan at the other end of the hose draws the air out of tho ear's interior. CoDnection between the hose and the wiridow is made through a rubber-fao-ed wooden plate. Readmgs obtained by this method enalile engineers to deIsign cars which will-Veep out dust and dirt and cold.
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Hawke's Bay Herald-Tribune, Issue 195, 3 September 1937, Page 5
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138Page 5 Advertisements Column 2 Hawke's Bay Herald-Tribune, Issue 195, 3 September 1937, Page 5
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