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Патент USA US2077175

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April 13, 1937.
Filed April 17, 1936
2 Sheets-Sheet 1
78 ' J
Jfe lama/Vi K079254111
Patented Apr. 13, 1937
‘Kennard Kornbau, Valentine Kromm, and Harry I
L. Kohl, New York, N. Y.
Application April '17, 1936, Serial No. 74,8661
6' Claims. (01. sis-+110)
This invention relates to ventilation equipment
for vessels, and more particularly to a shutter
type device ?tting into a port-hole, and by means
of which the control of ventilation therethrough
is e?ected.
An object of the invention is to provide a sturdy
ventilating device, easily fitted into the conven
tional vessel port-hole; one which is constructed
of relatively few easily-operating parts, and one
v which may be conveniently operated from inside
of the vessel by manipulation of a hand crank.
A further object of the invention is to provide,
in combination with the improved ventilating de
vice, means whereby the port-hole opening may
be screened, with the screens so arranged as not
to interfere with the ventilating device and its
operating mechanism.
In the accompanying drawings, wherein an em
bodiment of the invention is shown, Fig. 1 is a
front view of the ventilating device with the blades
thereof in open position; Fig. 2 is a view of the
opposite side of the device, as seen from the in
terior of the vessel, and with the screens in po
sition; Fig. 3 is a sectional view on the line 3-3 of
Fig. 1, looking in the direction of the arrows;
Fig. 4 is a similar sectional view, showing the
blades in closed position; Fig. 5 is a sectional View
through the annular seat and mounting for the
blades; Fig. 6 is a sectional view on the line 6-6
of Fig. 2, looking in the direction of the arrows;
and Fig. 7 is a front View of the channel-shaped
guide or housing in which the actuating bar trav
els, the View being taken on the line 1-1 of Fig.
3, looking in the direction of the arrows.
In the drawings l indicates a part of the hull
of a vessel, the same being provided with the con
ventional port-hole opening 2 in which the port-.
hole frame 3 is mounted. A port-hole cover, con
sisting of the pane 6 surrounded by the frame 4,
is hinged at 5 and when closed is held in such posi
tion by the clamping means 6a. The elements
just described are of well known construction and
form no part of the present invention.
Arranged for securement within the port-hole
frame 3 is an annulus or mounting ring 1 snugly
?tting the frame 3 and secured in position therein
by screws or other suitable means. Mounting ring
'! constitutes the body portion or supporting means
for the improved ventilator. Extending trans
50 versely of the annulus ‘I is a channel-shaped hous
ing 8 having its outer open end 9 facing the out
side of the port-hole, and its inner closed end It
facing the interior of the vessel. Said housing
contains and acts as a guide for an actuating
55 member I I in the form of a relatively ?at bar, said
bar being provided with a plurality of spaced lugs
i 2 each of which has itsouter end pivotally con
nected at 93 to a pair of links it having their
opposite ends pivoted at IE to a lug It projecting
from the back of a shutter blade l'l. Through this Cl
toggle connection between the blades and the ac
tuating member, the blades are moved to open
and closed positions by movements of the actu
ating member back and forth within the hous
ing 8. Each of the six shutter blades shown is
provided at its opposite ends and adjacent to
one of its longitudinal edges, with bosses 35 (Fig.
1) which are pivoted by suitable pivot pins in
bearings l8 formed in a seating ring l9 concen
trically secured within the mounting ring ‘I.
The actuating member H is formed with a
centrally located hub 20 which is movable within
the enlarged central part 2| of housing 8. Said
hub 20 is formed with an internally threaded ap
erture through which the threaded operating -'20
shaft 22 extends, said shaft being rotatably .
mounted in the rear wall ll! of the housing 8 and
having a bushing 23 secured on it at the outer side
of said wall, and the operating crank 24 attached
to it, by the pin 25, on the inner side of said wall.
Brie?y, the operation ofrthe device is as fol
lows: When the device is in its closed position, as
shown in Fig. 4, it will be seen that the shutter
blades I1, with the exception of the adjacent edges
of the two central blades, lie with their longitu
dinal edges in slightly overlapped relationship,
thus completely closing the port hole. In such
closed position, the end portions of the‘blades
seat against the stepped edge 21 (Fig. 5) of the
seating ring l9. To open the ventilator requires
merely counter-clockwise rotation of the crank
24, the rotation of'the threaded shaft 22 there
by in hub 20, causing the actuating member II
to be moved outwardly in the direction of the
open side 9 of housing 8. As actuating member
H is so moved, it swings the blades I‘! on their
respective pivots, through the action of the toggle
connections between the member and the blades,
causing the blades to be pivoted to open position,
clearly shown in Figs. 1 and 3. During such open
ing movement, three of the blades, namely, those
at the right of shaft 22 in Figs. 3 and 4, swing to
the left, while the remaining three blades to the
left of shaft 22, swing to the right. Thus, all
blades, on such opening movement, swing toward 50
the vertical center line of the device. To close
the blades, it is merely necessary to rotate the
crank 24 in clockwise direction thereby drawing
the actuating member backwards in the housing
8 and causing the blades to swing inwardly, 55
through their toggle connection with the actu
ating member, to closed position against the seat
21 as shown in Fig. 4. Since the movement of the
actuating member II is caused by the screw
threaded engagement between the hub 20 of actu
ating member II and the operating shaft 22, it is
obvious that the blades can be moved to any de
sired, fully or partly open or closed position to reg
ulate the desired amount of ventilation and the
10 device will remain in any set position of manual
adjustment until changed by rotation of the
As herein disclosed, the device is arranged with
the blades disposed vertically, this being found
desirable to permit the blades to de?ect the air
into the stateroom when desired. It will be un
derstood however, that the device can be located
in the port-hole in a position at right angles to
that shown whereby the blades will be arranged
with their planes disposed horizontally, or in fact
in any position where the blades are angularly
disposed, if desired. Any small amount of Water
entering between the blades may drain out of
the Weep holes 31 provided in ring 19.
In Figs, 2 and 6 the ventilating device is shown
provided with screens 28 and 29, each of said
screens consisting of a semi-circular section of
screening enclosed by a frame 30. When in po
sition, each screen abuts against the face 3| on
30 seating ring l9 and is held in position by means
of the positioning pins 32 engaging apertures in
ring ‘I and the spring ?ngers 33 projecting later
ally from the screen frames 39 and having their
ends entering the apertures 34 formed in the walls
of the housing 8.
The two screen sections are
screw shaft for moving the bar.
3. A device of the character described com
prising,'a port-hole, an annular frame ?tting
within the port-hole, a plurality of shutter blades
pivoted at their ends in said frame, an actuating
member and means for moving it back and forth
transversely of and within the frame, toggle con
nections between the blades and said actuating
member whereby said blades are swung on their
pivots to an open position when the actuating
member is moved in one direction and are swung
to a closed and partly overlapped position when
the actuating member is moved in an opposite
direction and an annular stepped seat against 20
which the blades abut when in their closed posi
4. A device of the character described com
prising, a port-hole, a frame ?tting within the
port-hole, a plurality of shutter blades pivoted
in said frame and adapted when in their closed
positions to seat against a stepped edge of said
frame, a channel-shaped housing extending
transversely of the frame, an actuating member
movable back and forth axially only of the frame
in said housing, screw-threaded means for mov
ing said actuating member, and toggle connec
tions between the blades and actuating member
whereby said blades can be opened and closed by
the axial movements of the actuating member.
within the port-hole, a plurality of shutter blades
pivoted, in said frame and adapted when in their
5. A device of the character described com
prising, a port-hole, an annular frame ?tting
Within the port-hole, a plurality of shutter blades
pivoted at their ends in said frame, a bar extend
ing transversely of the frame and movable back 40
and forth axially therein, a channelled guide ex
tending across the frame in which said bar is
movable axially only of the frame, a screw shaft
engaging the bar and moving the same by its
rotation, a crank for rotating said shaft, and
toggle connections between the shutter blades
and bar whereby movements of the bar will open
or close the shutter blades, all of said blades be
ing mounted to move toward the center of the
frame upon their movement to open position.
5. A device of the character described com‘
prising, a port-hole, a frame ?tted within said
port-hole, shutter blades pivoted on said frame,
closed positions to seat on said frame, a housing
a housing extending across the frame and con
thus easily snapped into position on opposite sides
of the housing 8 where they completely cover the
port hole yet they do not in any manner interfere
with the opening and closing of the ventilating
With the structure shown, a simple, effective,
ventilating device is provided which can be easily
installed without requiring alterations to the
port-hole; which permits the‘ port-hole to be
45 closed by its cover when desired, and this re
gardless of whether the ventilator is open or
closed, and which permits the port-hole to be
fully screened.
seat on said ring", pivoted shutter blades mounted
in the ring and adapted to rest against the
stepped seat when in their closed position, a bar,
toggles connecting said bar with the blades
whereby said blades may be opened or closed by
movements of the bar, and a manually-operated
What we claim is:
1. A device of the character described com
prising, a port-hole, an annular frame ?tting
55 extending transversely of the frame and secured
thereto at diametrically opposite points, an actu
ating member in the form of a bar movable back
and forth in said housing axially of the frame,
screw-threaded means for moving said actuating
60 member, and toggle connections between the
blades and actuating member whereby said blades
can be opened and closed by movements of the
actuating member.
2. A device of the character described compris
65 ing, a port-hole, a ring ?tting therein, a stepped
necting diametrically opposite points thereon, ac
tuating means movable back and forth in said
housing, toggle connections between said actu
ating means and the blades to swing the blades
on their pivots, screens within the frame in back
of the blades, said screens being located on oppo 60
site sides of the housing, and means for detach
ably holding said screens in position.
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