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Патент USA US2409041

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Oct‘.8,1946.
'
'
A. J. HARRIS
2,409,040
COMBINED SEA ANCHOR AND STABILIZER FOR BOAYTS I
Filed March 21, 1945
Patented Oct. 8, 1946
2,409,040
UNITED STATES PATENT OFFICE
2,409,040
COMBINED SEA ANCHOR AND STABILIZER
FOR BOATS
Asa J. Harris, Balboa, 0‘. Z.
>
Application March 21, 1945, Serial No. 583,987
3 Claims. (01. 114-126)
1
2
My invention relates to improvements in com
bined sea anchors and stabilizers for boa-ts and
the like.
The primary object of my invention is to pro
the hull I, for the vertical stabilizing ?n ‘I, and
extends along said keel 3 in upstanding position
coplanar with the keel and said stabilizing ?n ‘I,
vide simply constructed, inexpensive and ef?cient
_
means for stopping and holding a boat headed
into the wind, and minimizing pitching and roll
ing, in situations where it is undesirable, or im
possible, to use the usual anchor, for instance,
because of the violence of the waves, the depth 10
of the water, high winds, and similar factors.
and is bolted to the keel 3, as at II. The hous
ing I0 includes a rear, depending, bottom throat
I2 of reduced thickness ?tted into a longitudinal
Vertical slot l3 provided in the keel 3, the throat
I2 being open at the bottom of said keel.‘ As
shown in Figure 2, the housing I0 is of the same
shape as the vertical stabilizing ?n ‘I, and ap
proximately the same size, so that said stabiliz
ing ?n may ?t, substantially, therein, and the
hinge 6 is located rearwardly of the front end
of the throat I2 so that said stabilizing ?n may be
To the accomplishment of the above, and sub
ordinate objects presently appearing, a preferred
embodiment of my invention has been illustrated
in the accompanying drawing, set forth in detail 15 swung upwardly into the housing I0 and thereby
swing the drag plate 4 upwardly and rearwardly
in the succeeding description, and de?ned in the
substantially ?at against the keel 3 and into the
claims appended hereto.
In said drawing:
plane of the horizontal stabilizing ?n 2.
A pair of lift bars I4 are provided along the
Figure 1 is a view in side elevation of my im
proved sea anchor and stabilizer applied to a 20 upper rear corner portion of the vertical sta
bilizing ?n B, in the rear of the notch ‘9, upon oppo
Figure 2 is a view in vertical longitudinal sec
site sides of said portion, and are bolted to said
vertical stabilizing ?n ‘I, as at l5, and provided
tion, drawn to an enlarged scale, and taken on
boat,
with upstanding apertured ears I5. The bars I4
are of right angled cross section to provide lat
eral stop ledges I'I thereon adapted to seat on a
pair of stop cleats l8 suitably ?xed in the hous
Referring to the drawing by numerals, accord
ing I0 upon opposite sides of the throat I2, and
ing to my invention, the hull I of a boat, such
whereby downward swinging of the vertical sta
as shown, for the purpose of illustration, is pro
vided forwardly, as close to the prow as is found 30 bilizing ?n ‘I is limited to limit swinging of the
drag plate '4 downwardly into substantially ver
feasible, with an elongated, straight, horizontal
stabilizing ?n 2 suitably ?xed in its transverse
tical position.
v
A pull chain I9 is secured by a shackle 20 to
center to the keel 3 to extend crosswise thereof
equidistantly upon opposite sides of said keel.
the ears I6 and extended forwardly and upwardly,
As best shown in Figure 3, the horizontal ?n 2 35 in the housing I0, around a pulley 2I ?xed in said
is spaced by the keel 3 from the bottom struc
housing, the chain being trained upwardly vfrom
said pulley 2| out of the housing ID by way of a
ture of the hull I.
guide tube 22 rising from the front end of said
A drag plate 4, preferably of semi-circular
housing. The pull chain b9 provides manipula
form, with a straight leading edge 5 of the same
length as said horizontal ?n 2, is hinged at said 40 tive means for swinging the vertical stabilizing ?n
‘I upwardly and may be suitably secured in the
edge 5 to the rear edge of said ?n 2, as illus
hull I to hold said ?n, together with the drag
trated at B, for vertical swinging adjustment on
plate 4, in upwardly swung position.
said ?n 2 into elevated and lowered positions, re
Referring now to the use and operation of the
spectively, in which said plate extends crosswise
of the keel 3.
described invention, when the pull chain I9' is
slackened, the drag plate 4 swings downwardly,
A Vertical stabilizing ?n ‘I extends from what
imder the influence of gravity, into substantially
constitutes the rear face of the drag plate 4 and
vertical position, as shown in Figure 2, and the
is suitably ?xed to said plate 4 coplanar with
vertical stabilizing ?n ‘I likewise swings down
the keel 3. The vertical stabilizing ?n 1, where
it joins the drag plate 4, is of the same width ' wardly out of the housing I0 into trailing posi
tion relative to said drag plate 4, the ledges I‘!
as said plate and is formed with an arcuate rear
engaging the stop cleats I8 to establish the down
edge 8 concentric to the axis of the hinge 6, and
swung position of said drag plate 4 and vertical
with a right angled notch 9 in its upper front
stabilizing fin 'I. In this position of the parts,
corner, all for a purpose presently seen.
the horizontal ?n 2 functions to check side roll
An elongated, ?at housing I0 is provided in
the line 2—2 of Figure 3,
'
Figure 3' is a view in transverse section also
drawn to an enlarged scale.
2,409,040
3
ing of the hull I, the vertical stabilizing ?n 1 to
check the hull, or boat, against turning broad
side to the wind, and the drag plate 4 function
ing as a sea anchor to check the hull, or boat I,
4
2. The combination with the hull of a boat
having a keel, of a horizontal stabilizing ?n ?xed
to the bottom of said keel and extending cross
wise of the same, and a sea anchor comprising a
drag plate ?xed to said horizontal ?n for swing
ing upwardly and rearwardly into horizontal po
IS, the vertical stabilizing ?n 1 may be swung
sition and downwardly into pendent substan
upwardly on the hinge 6 into the housing II], in
tially vertical position, and a vertical stabilizing
an ineffective position, thus swinging the drag
?n extending from one side of said drag plate at
plate 4 upwardly against the keel 3 into coplanar
position relative to the horizontal ?n 2. In this 10 a right angle thereto to trail said drag plate
when said plate is swung downwardly, the verti
upwardly swinging of the vertical stabilizing ?n
cal stabilizing ?n extending upwardly through
l, the notch 9 ?ts over the front end of the throat
said keel for vertical swinging from a down
l2 and the bottom of the housing l0, asshown in
swung position into an ineffective position and to
Figure 2, illustrating in dotted lines the upswung,
or ineffective, position of the vertical stabilizing 15 swing the drag plate into horizontal position,
fin 1. When the drag plate 4 is swungupwardly j ' means in said hull to swing said vertical stabil
izing ?n upwardly, and a housing in said hull ex
into the plane of the horizontal ,?n 2, boththe
tending along 'said'keel for enclosing said vertical
drag plate 4 and said ?n 2 function to' stabilize
stabilizing ?n when the same is swung upwardly.
the hull I and neutralize rolling and pitching,
3. The combination with the hull of a boat
both acting as horizontal stabilizing ?ns.
20
having a keel, of a horizontalstabilizing ?n ?xed
.The foregoing will, it is believed, su?ice to im
to the bottom of said keel and exending cross
part a clear understanding of my invention with
against drifting. By pulling on the pull chain
out further explanation.
‘
wise of the same, and a sea anchor comprising a
drag plate hinged to said horizontal ?n for swing
,Manifestly, the invention, as described, is sus
ceptible of modi?cation without departing from 25 ing upwardly and rearwardly into horizontal po
sition and downwardly into pendent substantially
the inventive concept, and right is herein reserved
vertical position, and a vertical stabilizing ?n eX
to such modi?cations as fall within the scope of
tending from one side of said drag plate at a
the appended claims.
'
right angle thereto to trail said drag plate when
What I claim is:
l. The combination‘ with the hull of a boat 30 said plate is swung downwardly, the vertical sta
having a keel, of a horizontal stabilizing ?n ?xed
to the bottom of said keel and extending cross
bilizing ?n extending upwardly through said keel
for vertical swinging from a down swung position
into an ineffective position and to swing the drag
wise of the same, and a sea anchor comprising
plate into horizontal position, means in said bull
a drag plate hinged to said horizontal ?n for
swinging upwardly and rearwardly into horizon 35 to swing said vertical stabilizing ?n upwardly, a
housing in said hull extending along said keel
tal position and downwardly into pendent sub
for enclosing said vertical stabilizing ?n when
stantially vertical position, and a vertical stabil
the same is swung upwardly, and coacting devices
izing ?n extending from one side of said drag
in said housing and on the vertical stabilizing
plate at a right angle thereto to trail said drag
plate when said plate is swung downwardly, the 40 ?n, respectively, for limiting downward swinging
of said vertical fin downwardly to establish the
vertical stabilizing ?n extending upwardly
vertical position of said drag plate.
through said keel for vertical swinging from a
down swung position into an ineffective position
ASA J. HARRIS.
and to swing the drag plate into horizontal posi
tion, and means in said hull to swing said vertical 45
stabilizing ?n upwardly.
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