US1369566A - Ventilatob - Google Patents

Description

l. H. SMIDLEY.

VENTILATOR.

APPLICATION FILED MAR 31, 1920.

1,369,566. Patented Feb. 22, 1921.

2 SHEETS-SHEET ()FFICE.

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To all whom it may concern Be it known that l, JOHN fl. filivrmnn'r, a citizen of the United States, residing at Baltimore, State of Maryland, have invented new and useful improvements in Ventilators, of which the following is a specification.

My invention relates to ventilators and will be described as adapted for use in win dows or window openings in houses and other buildings. It is to be understood, however, that the improved ventilator is capable of use in other places where proper and satisfactory ventilation is needed.

The object of my invention is to provide a ventilator which is automatic, positive and noiseless in operation and controlled entirely by air pressure and gravity in the closing and opening movements thereof; also one which cannot get out of order and is practically indestructible in use under ordinary conditions.

A further object of the invention is to provide a ventilator embodying in conjunction with a suitable housing or casing, a closure freely movable with minimum friction and arranged to be moved by air pressure to a closed position and also adapted to be moved to its normally open position by gravity; to eliminate noise and to render the operation of the closure more or less sensitive to air pressure.

The improved ventilator opens and remains open under ordinary light air pressure permitting air topass by the same and is automatically closed by air pressure when the latter becomes excessive or such as to produce a draft upon persons within the house and in the vicinity of the ventilator when placed in a window orother opening.

A further object in view is to'provide in conjunction with a window, or other opening, upper and lower ventilating members to admit air to theinterior of the house and permit air to flow to find exit therefrom; one of such ventilating members, (preferably the lower one) being more sensitive than the other to adequately protect persons in the vicinity thereof. In this way a cir' culation of air is obtained without any discomfort or danger to such persons.

The invention consists in the novel combination and arrangement of instrumentalities herein shown, described and claimed.

In the accompanying drawings Figure 1 is a vertical cross section through Specification of Letters Patent.

Patented Feb. 22, 1921.

Application filed March 31, 1920. Serial No. 370,225.

a window frame and opening, showing the use of upper and lower ventilators in proper relation thereto and to the top and bottom window sashes.

Fig. 2 is a vertical cross section through the upper ventilator on an enlarged scale.

Fig. 3 is a fragmentary outside elevation of the same.

Fig. {L is a fragmentary inside elevation thereof.

Fig. 5 is a fragmentary horizontal section through the same.

1F ig. 6 is a vertical cross section through the lower ventilator.

Fig. 7 is a fragmentary outside elevation of the same.

it ig. 8' is a fragmentary inside elevation thereof.

lin the preferred installation of the im proved ventilator, I employ in conjunction with a window 10 and top and bottom sashes 11 and 12, an upper ventilator or ventilating member 13 and a lower ventilator or ventilating member 14. Such installation permits air to enter a building through the lower part of the window opening and flow out wardly through the top thereof, and as will hereinafter appear, in case of gusts or excessive winds or air pressure both the upper and lower ventilating members will automatically close, preventing dust, smoke, snow, and the like from being blown into the building.

The lower ventilator or ventilating member 14.- embodies a housing or box-like casing shown as comprising an outside wall 15, an inclined inside wall 16 and an outwardly sloping or inclined bottom surface 17. The wall 15 is formed with an air inlet 18, and the wall 16 is formed with an air outlet 19 which is surrounded by a seating flange 20 for a freely and bodily movable closure 21.

The closure 21 is shown in the form of a hollow hemisphere and half ball as shown 6 and is disposed with its open side ing an aindistributing chamber 25 which divides theiwhole incoming current into a great number of smaller currents which are not attended with dlscomfort and danger to persons nearby. The housing is further shown as equipped with a packing orweatherstrip 26 for, air-excluding contact with the adjacent window sash, as shown in Fig. 1. The strip 26 is clamped between parts of the housing as shown in Fig. 6.

The upperventilator or ventilating member 13 embodies an outside wall 27 having an air port 28, an inside wall 29 having a port 30, a top wall 81 and an outwardly slopingor inclined bottom surface 32. The port 30-is partially obstructed by a recticulated guard 33 which forms a seat and stop for a closure 34 restrained as to its amplitude and direction of movement by an open- .work or meshed wire cage 35 having an obstructed end wall 36 and freely open at the opposite end as shown in Fig. 5. The end 36 is spaced from the port 28 so the closure 34.- cannot obstruct the latter but said closure upon being propelled upwardly along the inclined surface 32 may obstruct and close the port 30 to prevent gusts of'air, dust and the like from enteringthe building. When the closure, which is shown in the form of a hollow sphereor ball of soft or resilient materialsuch as rubber, leather or fiber, rolls down the inelinedsurface 32 by gravity upon reduction of air pressure from the outside, said-closure is stopped by the end wall 36 of the cage leaving the ventilator open and free for thepassage ofair therethrough in either direction. A packing or weather strip 37 attached to the'housing of the member 13 contacts with the adjacent window sash, as shown in Fig. 1. I V

In one ventilator member the closure rolls on an inclined floor or surface under the action of air pressure and gravity while in the other ventilator member the closure being freely suspended swings under air pressure and gravity. In both cases the closures move bodily or at every point toward and from their closed and open positions and, being of such material as above indicated, such movements are rendered noiseless and accompanied by little or no friction and wear. In each case the housing may be of any necessary length and have any required number of ports, inlets and outlets and a corresponding number of closures and seats as indicated in the drawings. The closure 21, being more sensitive than the closure 34, is generally used at the bottom of a window opening to add to the comfort and safety of persons near the window.

Claims:

1. A ventilator embodying a housing haw ing an air inlet and an air outlet, and a closure for said outlet freely movable as a whole in an inclined path under the action of air pressure and gravity to cover and uncover said outlet, said closure having a working face of spherical formation, and a reticulated seat for said closure adjacent to the air outlet.

2. A ventilator embodying a housing having an air inlet and an air outlet, and a resilient closure for said outlet freely movable as a whole in an inclined path nearly horizontal under the action of air pressure and gravity to cover and uncover said outlet.

3. A ventilator embodying a housing having an air inlet and an air outlet, and a flexible closure for said outlet freely movable as a whole in an inclined but nearly horizontal path under the action of air pressure and I gravity to cover and uncover said outlet.

4. In window ventilation, the combination of an upper ventilator and a lower ventilator, each ventilator embodying a housing having an inlet and an outlet, and bodily movable air pressure controlled closures for

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