Improvements in ventilating devices relating to tramcars, motor omnibuses, railway coaches and the like

摘要

492,541. Ventilating vehicles. EASTON, T. P. May 3, 1937, No. 12534. [Class 137] Fresh air is supplied to closed vehicles through cone-shaped mouthpieces a which lead to tubing b having inclined outlets h, the tubing being supported by hangers k from the roof f of the vehicle and provided with hand straps m. The outlets h have diameters which increase with the distance from the mouthpiece a. Forward motion of the vehicle forces air into the tubes and out through the openings h.