US2337799A - Ventilator for portholes and like openings - Google Patents

Description

I Dec. 28 1943. w. w. CARVER VENTILATOR FOR PORT-HOLES AND LIKE OPENINGS Filed Aug. 11, 1942 ATTOR Y Patented Dec. 28, 1943 UNITED STATES OFFICE VENTILATOR FOR PORTHOLELS AND LIKE OPENINGS 1 Claim.

This invention relates to an improved ventilator for port-holes and like openings which ventilator is easily installed in a port hole and includes a rotatable unit which can be easily adjusted by hand. The adjustment causes the outside fins of the unit to be facing or to be with the wind. In this way the ventilation of a cabin or compartment can be facilitated according to the direction the vessel is taking and the direction of the wind.

The invention is further designed to provide a unit having a large area for the passage of air and constructed to provide a substantial unit. The discs and fins of the unit are secured together in a manner to provide a ventilator light in weight but substantially rigid when in place.

The invention is illustrated in the accompanying drawing in which Figure 1 is a face view of the ventilator with one half broken away. Figure 2 is a side view of the ventilator shown in Figure 1, with the lower half in central section.

The drawing shows in dotted outline a porthole III in the side I I of a vessel. A band or ring I2 is proportioned to fit in the port-hole and provide a casing for the rotatable unit. The ring I2 is provided with a flanged ring I3 which fits around a gasket I4 at the edge of the port-hole. An additional flanged band I 5 is secured by welding or otherwise to the ring I2, as is the ring I 3. The casing is fastened in place by suitable means such as usual fastening bolts I6 now used on shipboard and which fit in the slots of the ears I8 of the flange I5 and the nut I9 is screwed down against the ears.

The casing or ring I2 is provided on its inner edge with a flange 20 which acts as a stop for the rotatable unit. The unit is held against movement in the other direction by a band 2| which is screwed by screws 22 or otherwise to the ring I2.

The rotatable unit fits inside the ring I2 loose enough to be turned easily by hand. The unit is made up of discs 23, to the required number. The discs are punched to form louvers 24 which provide the openings 25 for the passage of air. The discs are reversed and arranged to stagger the louvers to prevent the passage of light through the ventilator. The discs are secured, preferably by welding, to circular bands 26 having flanges 21. The bands 26 fit easily into the ring or casing I2 and with the discs form a relatively still, light unit that can be turned to suit conditions.

The unit is provided with a handle for easy manipulation. The handle 28 shown extends across the center of the unit and is spaced therefrom, being fastened to the inside disc 23 by welding or other means of fastening.

The outer face of the unit is preferably provided with a wind scoop 0r shield 29 that extends part way around the outer edge and is located to receive and direct air into the ventilator or to act as a shield and thus induce air from the ventilator.

The construction of the unit is designed to provide a strong unit. The bands 26 serve, when welded to the rims of the discs 23 to transmit the strain incidental to rotating the unit. The bands 26 and disc 23, also the handle, if one is employed, are welded together separately and form a unit that is readily placed in the casing I2 and is secured therein when the band or ring 2I is fastened into place.

I claim:

A ventilator comprising a round casing for installation in a port-hole or the like, a rotatable unit in the casing comprising spaced discs having louvers for the passage of air, flanged bands to which the rims of the discs are secured, means to secure the bands and discs together to form a unit, and means for rotatably mounting said unit in the casing so that the discs can be rotated in unison and provide a peripheral contact with the discs and with the casing.

WALTER W. CARVER.

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