US1941186A - Ventilator for cars - Google Patents

Description

Dec, 26, 1933. w J. PlNE ET AL 1,941,186

VENTILATOR FOR CARS Filed Feb. 10. 1950 Jill/$771076 Patented Dec. 26, 1933 UNITED STATES VENTILATOR FOR CARS William J. Pine and Nicholas L. Willer, Chicago, 111., assignors to Railway Utility Company, Chicago, 111., a corporation of Illinois Application February 10, 1930. Serial No. 427,095

2 Claims.

Our invention relates more specifically to the type of ventilator adapted to be mounted on the top of a street or railroad car and to operate by the aspirating eiiect of the movement of the I car through the atmosphere to draw air from the interior of the car so that it may be replaced by fresh air. In ventilators of this general character as heretofore constructed, in certain conditions of the wind and weather, particularly when the car is not in motion, there has been some tendency for air, rain and small particles of dirt, etc. to enter the car through one or more of the numerous ventilators with which each car is customarily provided. Our invention 18' has for its object not only superior efliciency in withdrawing or sucking out the air from the interior of the car when the car is in motion but prevention of the entry of gusts of air, rain, and particles of solid matter, whether the car is in '20'motion or at rest. This object is accomplished by the construction hereinafter described and pointed out in the claims.

In the drawing accompanying and forming a part of this specification, Figure 1 shows a part 26i of the curved roof of a car with a suitable form of our invention applied thereto, the roof and ventilator being shown in transverse section; and

Fig. 2 is a similar view of the top of a deck car with a suitable form of the invention applied '30 thereto.

Referring first to Fig. l of the drawing the roof of the car is illustrated at 2 and it is shown with a ventilating opening 3 therein. The top wall 4 of the ventilator, which is substantially 351 horizontal in its outer portion, is curved downwardly at 5 and attached by the flange 6 to the roof of the car. The front and rear walls, of which one only is shown at 7, are flat or plane and imperforate and preferably vertical. They may ibe attached by flanges similar to flange 6 to the roof of the car. The ventilator is further formed with a vertical wall 8 which, with the front and rear walls and the downwardly-extending portion of the top wall, forms a neck opening 145. into the ventilating opening of the car roof. It

is secured to the car by a flange 9. From the may be of a well-known type, formed of flat '55. strips of sheet metal connected together to form a grating and the outer edges of which are flush with the edges of the lateral opening of the ventilator and, when the car is in motion, form numerous aspirating edges, the motion of which through the atmosphere exerts a suction on the air inside theventilator. The outer end of the ventilator is also formed with a bottom opening 14 surrounded by a depending wall skirt 15 within which is arranged a honeycomb grating 16 which may be similar'to the grating 13 hereto- I fore described. A series of downwardly and inwardly inclined deflectors 17 which may be, and are shown as, continuous with the respective horizontal strips 18 of the honeycomb grating, are secured to the latter, so that gusts of air, rain, sleet, snow or solid particles which may be blown or carried through the honeycomb grating 13 are deflected downwardly and pass out through the bottom opening of the ventilator. The upwardly extending wall 8 serves also to intercept any solid 'or liquid matter which chances to get beyond the bottom opening.

The form of ventilator shown in Fig. 2 is similar in all substantial respects to that shown in Fig. 1 except that the neck 20 thereof is modified in order that it may be attached about the opening 21 in the vertical side of the car top. More specific description thereof is not deemed necessary. 7

It will now be seen that when thecar is inv motion in either directiona closed wall is presented against the pressure of the atmosphere toward which the car is traveling and the motion of the edges of the honeycomb grating in the lateral and bottom openings of the ventilator causes an aspirating effect which exerts an exhausting or suction action upon the air within the ventilator and consequently that within the car, so that there is a constant outflow of heated and. used air from the car. If there is a lateral wind driving against the open side of the ventilator and it is of sufficient force to more or less overcome the suction effect mentioned and to drive gusts of air, wateror solid particles through the lateral opening, the downwardly inclined deflectors coupled with the suction effect of the honeycombs in the bottom opening, discharges them through the bottom opening and prevents their entry into the car. The top of the ventilator is completely closed thus preventing the entrance of air, water or solid matter by gravity whether the car is standing or in motion. Furthermore, when the car is stationary the deflectors and bottom opening act similarly to prevent gusts of air, rain, etc., from entering the car.

We claim: 1. A ventilator of the class described having substantially closed front, rear and top walls, and lateral and bottom openings, aspirating partitions across the lateral opening, and deflectors arranged across the lateral opening and inclined toward the bottom opening, said bottom opening discharging exteriorlygof the enclosure to which the ventilator is attached.

2. A ventilator of the class described having

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