Twin ventilator fixture

Abstract

A ventilator fixture in the form of a pair of half domes arranged back to back with each half dome having an open screened face surmounting an outwardly curving header and each half dome inwardly having a generally concave member leading inward and downward around the said header to separate ventilating exhaust vents leading into an opening of a vehicle upon which the fixture is attached, the concave members being spaced from each other to provide a well into which moisture is fed from weep holes extending transversely across each said concave member at a location near the bottom of the concavities and a single major weep hole on each side of the said well to discharge accumulation of moisture therefrom externally of the fixture.

Description

BACKGROUND OF THE INVENTION

Ventilation of vehicles and the like wherein no artificial or powered air cooling and circulating is installed has become a modern requirement in commercial vehicles particularly. The perishability of cargoes and the comfort and safety of passenger-operators is of foremost concern in these types of vehicles, and many ventilating arrangements have been introduced; however, most of these arrangements are complicated and costly.

SUMMARY OF THE INVENTION

The subject invention is directed to a ventilator of simple construction having no moving parts wherein circulation of air and the discharge of water condensate and the like are controlled automatically by the construction of the invention. A unique feature of the invention is its adaptability to install upon a railroad car wherein ventilation of the vehicle is provided by its motion in either direction upon a track.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the ventilating fixture showing both halves of the structure as it appears externally.

FIG. 2 is a sectional view of the fixture taken along a line at right angles to the direction of motion of the ventilator fixture when it is attached to a moving vehicle.

FIG. 3 is a perspective view of a portion of FIG. 1 showing the interior of one half of the fixture and the line of weep holes in the concavity of the deflecting member.

DETAILED DESCRIPTION OF THE INVENTION

Referring to FIG. 1 a base 10 carries side plates 11 and 11a (not shown), together with the outwardly curving headers 12 at each end of the base 10 and the dihedral top 14 and the screened openings 13 (only one of which is shown) to form the twin ventilator fixture. Weep hole 15 is provided for discharging water from a well 21 (later explained herein) to the exterior of the fixture, and further weep holes 16, 17, 18 and 19 are also similarly provided in the side plate 11. Similar weep holes 15a, 16a, 17a and 18a and 19a are provided on the other side plate 11a (not shown).

Now referring to FIG. 2 a supporting member 10a across the width of the fixture is attached to the base 10 and in turn supports a troughlike plate 10b extending across the width of the fixture. Attached at each end of the juncture of the top 14 and the top of the screened opening 13 is a curved member 20, which extends inward and downward around and spaced from header 12; forming an irregular ogee curve therewith, terminating in a lip 22 and extending across the width of the fixture. The base 10 has extended openings 24 through which ventilation is carried into the vehicle upon which the twin ventilator fixture is mounted,each opening 24 being provided with a cut off 25 -- these forming no part of the subject invention.

Referring again to FIGS. 1 and 2 the plate 10b, side plates 11 and 11a and the convex sides of the curved members 20 together form a well into which water blown in through the screened openings 13 or condensed from the air passing through these openings may accumulate by dripping through holes 23 (See also FIG. 3) in the members 20, the aforesaid well 21 discharging through the weep holes 15 (See FIG. 1) and 15a (See FIG. 2). Water accumulating in the lips 22 of the members 20 may also be discharged from the weep holes 16 and 17 in side plate 11 and from weep holes 16a and 17a of side plate 11a. Further provision of weep holes 18 and 19 of side plate 11 and 18a and 19a of side plate 11a affords discharge of moisture that might otherwise enter the vehicle carrying the twin ventilating fixture through the openings 24.

Normally the above described fixture is mounted upon the top or roof of a vehicle, the fixture being oriented so that the screened openings 13 face the direction of travel of the vehicle. Consequently, when both cut off's 25 are open air will be forced in through one screened opening 13 (the opening facing the direction of motion of the vehicle) down through the member 20's concave surface around the lip 22 and through an opening 24 into the vehicle, thereafter the exhaust will be upwards through the other opening 24 into the other member 20's concave surface and out through the other screened opening 13.

Claims

What is claimed is:

1. A twin ventilator fixture having a pair of back to back air inlets spaced a predetermined distance from one another, a pair of air exhausts, one for each inlet, positioned below and offset therefrom, a curved duct from each said inlet to each said exhaust, a trough supporting said ducts and forming therewith a reservoir for collecting moisture, weep holes arranged in a line across the lower extremeties of each said duct for discharging water accumulated by the said ducts into said reservoir, and means comprising a pair of weep holes for discharging water from said reservoir.