. Electric railway journal . Duct to Deflect the Windand Increase the Exhaust Action considerable velocity over the honeycombed exhaustpassages. This draws the air from the car in apositive manner. In the Globe ventilator, also, theaction of the air striking against an external hoodis depended upon to produce a partial vacuumwhich draws the air from the car. The ventilatorhas a dome-shaped top the lower edge of which is turned up to form an exhaust port. In the foregoingtypes the construction is extremely simple, depend-ence being placed upon a leakage around the doorsand windows for the suppl
. Electric railway journal . Duct to Deflect the Windand Increase the Exhaust Action considerable velocity over the honeycombed exhaustpassages. This draws the air from the car in apositive manner. In the Globe ventilator, also, theaction of the air striking against an external hoodis depended upon to produce a partial vacuumwhich draws the air from the car. The ventilatorhas a dome-shaped top the lower edge of which is turned up to form an exhaust port. In the foregoingtypes the construction is extremely simple, depend-ence being placed upon a leakage around the doorsand windows for the supply of fresh air. In the diffusion type of ventilator of the Auto-matic Ventilator Company the drawing in of airthrough the doors and windows is largely elimi-nated by providing a positive fresh air supplythrough one side of the ventilator itself. When thecar is in motion the air strikes against an externaldeflector which directs it into the car through thediffusion box, the horizontal louvers of which send No WMeSh Screening. Exterior View 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
Size: 3360px × 744px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
