. Electric railway journal . erf Installation Details Showing Operation of Diffusion Type Ventilator the air along the ceiling of the car. After losingits initial force the incoming air, being cooler andheavier than the impure air, descends to the breath-ing and floor levels. At the rear of the external de-flectors a partial vacuum is set up which, assistedby the pressure of the incoming air, induces astrong exhaust of the impure air through the portbehind the deflectors. Miscellaneous Equipment In curtain materials there is no change fromstandard practice. The curtain fixtures also arenot ess
. Electric railway journal . erf Installation Details Showing Operation of Diffusion Type Ventilator the air along the ceiling of the car. After losingits initial force the incoming air, being cooler andheavier than the impure air, descends to the breath-ing and floor levels. At the rear of the external de-flectors a partial vacuum is set up which, assistedby the pressure of the incoming air, induces astrong exhaust of the impure air through the portbehind the deflectors. Miscellaneous Equipment In curtain materials there is no change fromstandard practice. The curtain fixtures also arenot essentially different from standard, but thedetails have been adapted to the new designs ofwindow frames. The Curtain Supply Company,whose fixtures are popular on safety cars, has madea special type of ring fixture with a smaller andlighter head or tip to fit the grooves in these fixtures, like curtain fixtures, are notradically different. The O. M. Edwards fixture,which has been specified extensively, consists of a. Ventilator Having Dome-Shaped Top with LowerEdge Turned up to Form Exhaust Port sash lock, a rack, a sash lift, and two anti-rattlingdevices for each sash. By means of these fixturesthe sashes are held safely and firmly at any desiredheight and are prevented from rattling. On cars having but one operator it is especiallyimportant that every surface on which passengerswalk or step should be so constructed both as to
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