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Патент USA US3071104

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Jan“ 1, 1963
3,971,095
L. DAVIS
MARINE ANCHOR
Filed July 25, 1960
INVENTOR.
L g/@ Da v/s
BY
Rob e/“f J Pafch
ATTK
._
3,07Ld95
Patented Jan. 1, 1963
2
3,071,095
Lyle Davis, 3720 E. 13th St, Tulsa, @kia.
Filed July 25, 1966', Ser. No. 45,140
3 Claims. (Cl. 114-403)
MARME ANCHGR
The present invention relates to marine anchors, more
particularly of the type having folding ?ukes.
partly from cage 11 in an upward direction as seen in
FIGURE 1, the ?ukes engage the tops of the slots ‘as
seen in FIGURE 1 to extend the flukes; while upon down~
ward movement of anchor shaft 5 as seen in FIGURE 1,
as when the tension in the line is released and the anchor
shaft falls by gravity within the cage, the anchor ?ukes
are collapsed. Also, inward swinging movement of the
flukes may be effected for storing the anchor. Although
the anchor is generally cylindrical, it will not roll when
It is an object of the present invention to provide a
marine anchor having ?ukes that are automatically ex 10 stored on the deck or like portion of a ship, for the
tensible when needed.
arrangement of the ?ukes as seen in FIGURE 3 gives
Another object of the present invention is the pro
it a polygonal con?guration which is quite stable. Hence,
vision of -a marine anchor that will not roll when stored.
the provision that the flukes have portions remaining at
Still another object of the present invention is the
all times outside the contour of the cage not only serves
provision of a marine anchor of the type having folding
to aid in the collapse of the ?ukes but also provides
flukes, in which means are provided for automatically
the non-rolling feature of the anchor.
releasably maintaining the flukes in extended position.
Cage 11 is also provided with a. bottom end cap 15
Yet another object of the present invention is the
which makes it possible to assemble the anchor. With
provision of a marine anchor adapted automatically to
cap 15 removed, ?ukes 9 can be passed through slots 13
free itself when fouled.
.
and pins 7 inserted. Thereafter, cap 15 is applied and
Finally, it is an object of the present invention to
secured to cage 1i. as by pinning or welding or the like to
provide a marine anchor that will be relatively simple
hold the anchor in assembled relationship.
and inexpensive to construct, and dependable, rugged
and durable in use.
Other objects and advantages of the present invention
will become apparent from a consideration of- the fol
lowing description, taken in connection with the accom
panying drawing, in which:
FIGURE 1 is a view of a marine anchor according
to the present invention with the flukes extended as
shown in full lines and the ?ukes collapsed as shown in
broken lines, with parts broken away for ‘clarity;
‘FIGURE 2 is a section on the line 2-2 of FIG
URE 1;
FIGURE 3 is an end view of an anchor according to
the present invention, showing the manner in which the
i'lukes prevent rolling;
Anchor shaft 5 is provided with an annular recess 17
intermediate its length, recess 17 being adapted to co
act with a portion of cage 11 releasably to retain flukes 9
in extended position. Speci?cally, the marginal edges of
the opening through which anchor shaft 5' enters cage
11 are adapted to fit into recess 17 and to be releasable
from the recess upon manipulation of line 3 when it is
desired to weigh anchor.
Another important feature of the present invention is
the means for automatically releasing the anchor from
an obstruction when. the anchor becomes fouled. To
this end, an eye It? is provided on cap 15 and line 3
terminates and is secured to this eye. This is not to
say that the end of the anchor that bears eye 19 is the
line end of the anchor. in ordinary usage, the other
FIGURE 4 is a view of an individual ?uke;
end, comprising the exposed end of shaft 5, is the line
¢FEGURE 5 is a perspective view of the anchor with
end of the anchor. However, line 3 is attached to this
Lil) normal line end of the anchor only by a cord 21 sub
the flakes folded; and
FIGURE 6 is a view of the ‘anchor in use, showing
stantially weaker than line 3. Cord Z1 interconnects
the automatic dislodging arrangement when the anchor
the exposed end of the anchor shaft with a point on
is fouled.
line 3 intermediate the ends of line 3.
Referring now to the drawing in greater detail, there
Between cord 21 and eye 19, line 3 is slack in all
is shown a marine anchor indicated generally at 1, se
positions of the anchor. Thus, in normal usage, th
cured to the end of a long ?exible anchor line 3. The
anchor line will be disposed as seen in FIGURE 1; but
axis of the anchor is de?ned by the ‘axis of an anchor
when the anchor becomes fouled, the pull on line 3
shaft 5 which carries at its end a plurality of pins 7
will break cord 21 long before line 3 is threatened with
on each of which is mounted at one end an anchor ?uke
breakage. Thereupon, the anchor will be turned end
9. Pins 7 are all disposed in a common plane per
for end and cleared, the position of the anchor immedi
pendicular to the axis of shaft 5, so that flukes 9 are
ately after the breaking of cord 21 being shown in PEG
mounted for radial outward swinging movement between
URE 6.
the phantom and full line positions shown in FIGURE 1.
In view of the above disclosure, it will be obvious
Anchor shaft 5 is disposed within a hollow cage 11
that all of the initially recited objects of the present
which is elongated in the direction of the anchor shaft ' invention have been achieved.
and provided with a plurality of elongated slots 13
it is to be understood that the present invention is
parallel to each other and to the length of the cage and
to ‘be accorded a range of equivalents commensurate in
parallel to the axis of anchor shaft 5. Each slot is
scope with the advance over the prior art.
closed at each end, and the slots 13 correspond in
What is claimed is:
number and peripheral spacing to the number and periph 60 ‘1. A marine anchor comprising an anchor shaft, a
eral spacing of flukes 9 about shaft 5. Each ?uke 9
plurality of ?ukes pivotaily mounted on the anchor shaft
has an enlarged outer end portion that remains outside
for
swinging movement radially inward and outward of
slots 13 at all times and a reduced portion that passes
the
shaft between a first position in which the ?ukes
through the slots, so that the enlarged portions of the
overlie the shaft and extend from adjacent one end of
?uke cannot pass through slots 13 and into the interior
the shaft toward the other end of the shaft and a second
of cage 11.
position in which the flukes extend radially outward
As will be seen from an inspection of FIGURE 1,
from the shaft, and a cage in assembly with the shaft,
by comparison of the full and phantom line representa
the shaft and the ?ukes carried thereby being movable
tions of the anchor shaft and ?ukes therein, the opposite
sides of the ?ukes alternately engage with opposite ends 70 relative to the cage axially on the shaft, the cage having
a plurality of slots closed at each end and extending
of slots 13 thereby to extend or collapse the ?ukes. Upon
through the side walls of the cage, one of the ?ukes
a pull on the anchor line such as will Withdraw shaft 5
3,071,095
3
extending through each slot, so that upon relative move
A ent of the shaft and cage in a direction to withdraw
the shaft from the cage the ?akes move with the shaft
relative to the cage and engage one closed end of the
4
latter portions lying flat against the cage when the flakes
are in their radially inwardly swung position.
3. A marine anchor as claimed in claim 1, the shaft
having a recess therein for receiving and releasably re
taining a portion of the cage only when the flukes are
slots to swing the ?ukes radially outward away from
the shaft from the ?rst to the second position, while
upon relative movement of the shaft and cage in the
in the second position thereby releasably to maintain the
?ukes extended.
other direction the ?ukes move with the shaft relative
to the cage and engage the other closed end of the slots
References Cited in the tile of this patent
UNITED STATES PATENTS
to swing the flakes radially inward toward the shaft from 10
the second to the ?rst position.
2. A marine anchor as claimed in claim 1, the ?ukes
707,683
1,087,444
Farewell ___________ __ Aug. 26, 1902
Hamilton ___________ __ Feb. 17, 1914
having portions disposed inside the cage at all times
and portions disposed outside the cage at all times, the
2,851,983
2,940,411
Hrivnyak ___________ __ Sept. 16, 1958
Bartels et- al. _______ _- June 14, 1960
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