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Патент USA US3072099

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Jan. 8, 1963
P. L. GAGNON
3,072,089
HATCH SECURING DEVICE
Filed June 19, 1961
IN VENTOR.
PAUL L.GAGNON
BY
ATTORNEYS
United States Patent ()htiee
l.
snvaesa
HATCH SECURING BE‘VKJE
Paul L. Gagnon, 24 Harrington Terrace,
West Grange, NJ.
Filed lane 19, 1%}, Ser. No. 123,673
4 Claims. (ill. 114-263}
E‘atented Jan. 3, ll?hg
2
it is also an object of my invention to provide such a
device which will not yield until a load oi su?icient mag
nitude to be noticed by a crane operator has been ap
plied to the device.
Brie?y, my invention provides a device for securing a
vertically movable eye-containing body to a ?ange which
extends horizontally away from the vertically movable
body. The device itself includes a length of chain hav
My invention relates to a locking device. More par
ing a ?rst hook means attached to one end of the chain
ticularly, my invention relates to a device for securely
locking a hatch beam to the ?ange of a hatch coaming. 10 and adapted to engage the edge of the ?ange which is
remote from the movable body, a second hook means
The present method of closing between deck cargo
adapted to engage the eye of the movable body slidably
hatches of merchant vessels consists of lowering a series
mounted
about the length of chain through the eye of
of steel beams each spanning the hatch into sockets in
the second hook means and a ?at plate attached to the
opposite sides of the hatch coaming such that one beam,
opposite end of the chain and provided with an open
called a king beam, is at the center of the hatch and other
ing therethrough, the chain passing through the opening.
beams called queen beams are parallel thereto, and lay
The plate is also provided with an elongated slot coni
ing boards transversely across the top of the queen beams,
rnunicating with the opening along the transverse dimen
the boards being sized to span one-half of the hatch and
sion of the slot. The slot in the plate is sized to engage
about the king beam. Such an arrangement permits re
moval of the boards from across one-half of the hatch and 20 a link of the chain about the smallest dimension of the
link thereby preventing passage of the chain through the
plate. The second book means is disposed along the
covered for depositing cargo thereon to be loaded or un
chain between ‘the ?rst hook means and the plate and
loaded from that particular deck, while the other half
the chain is rove through the opening in the plate, the
25
of the hatch is open for loading or unloading cargo from
opening slidably receiving the chain. Thus, when the
the deck below. It is customary to load or unload sev
elements or‘ my device are in ?ned position, the ?rst hook
eral decks of the hold simultaneously and since the crane
means engages the edge of the flange, the second book
operator cannot always see into the hatch being loaded
means engages the eye of the movable body, the chain is
also permits removal of queen beams supporting such
boards.
Thus, one-half of the hatch remains closed or
or unloaded, it frequently occurs that the cargo or crane
hook being raised from a deck below engages the king
beam of the initially closed hatch above. The normal
load capacity of the crane is much greater than the ap
proximately one ton weight of the king beam, so that
the crane operator will not normally notice the slight
increase in load due to the beam, particularly when the
crane is hoisting cargo, so that the king beam can be
inadvertently lifted out of its sockets. The dangers of
a one ton steel beam and perhaps the hatch boards fall
ing as much as 30 feet into the hold below are obvious.
taut between the ?rst and second hook. means, the ?at
plate abuts the eye of the second book means and the
slot of the plate engages the chain link immediately
adjacent the eye of the second book means and the mov
able body is thcreby secured to the ?ange.
In a particularly advantageous embodiment of my in
vention speci?cally designed for securing a hatch beam
to the horizontal ?ange of the beam under the hatch
coaming on a merchant vessel, the ?rst and second hook
means of my device are of the type described as a re
To guard against the possibility of the king beam be
versed eye hook in which the plane of the eye is per—
coming dislodged, it is common practice to attach lines
pendicular to the plane of the hook. in this particular
through the beam eyes and to secure the lines to some ?xed
embodiment the ?rst reversed eye book can be attached
object within the hold, such as the steel work comprising
to the chain by, for example, an anchor shackle. The
the skeleton of the ship. This practice has not been en 45 second reversed eye hook is then positioned on the chain
tirely satisfactory because the lines tend to stretch and
so that the points of the ?rst and second reversed eye
their strength is not always suf?cient to add an adequate
hooks face each other. With this arrangement, the plate
load that would be noticed by the crane operator. More
can abut the eye of the second hook when in ?xed posi
over, stringing the lines through the hold creates a haz
tion.
ard in itself. it has also been suggested to provide holes
Advantageously, the slot and opening through the ?at
in the beams and in the beam supports which register
plate are so positioned that they form an opening with
when the beam is placed in the support and to insert pins
a keyhole con?guration and the flat plate is further pro
in such holes. Such a method required in practice that
vided with a hole remote from the narrow portion of the
only a particular beam could be placed in a particular
set of supports in a particular hatch in order for the
keyhole and adapted to receive, for example, an anchor
holes to register and was not practical. Another method
shackle for attaching the end of the chain to the plate.
that has been suggested is to provide the beams with a
The last link in the end of the chain attached to the ilat
pin rotating in a vertical plane and to provide the beam
plate can also be provided with some type of connecting
supports with a notch adapted to receive the pin so that
when the beam is placed in the support the pin can be
rotated to engage the notch. Such a method, however,
has proved unsatisfactory since the pins were found to
be readily jarred out of the notches by any slight impact
received by the beam.
means, such as a sister or scissors hook, so that when my
device is in ?xed position, the connecting means can be
attached to one of the links in the taut portion of the
chain thereby positively insuring that the flat plate will
not be moved from its position of engagement with the
it is an object of my invention to provide a locking de 65 chain link.
To describe more completely the device of my inven
vice for ?rmly securing a hatch beam in place.
tion
reference is made to the attached drawing in which:
It is another object of my invention to provide such
FlGURE l is a partially sectioned isometric view illus
a device which can be employed interchangeably with
any beam in any hatch.
trating a hatch in a lower deck of a merchant vessel.
FIGURE 2 is an isometric view of the device of my
It is a further object of my invention to provide such 70
invention.
a device which cannot be jarred lose by any impact re
ceived by the beam.
FIGURE 3 is an isometric view showing a diiferent re
=3‘
lationship of certain of the members illustrated in FIG
URE 2.
FIGURE 4 is a fragmentary elevation of a hatch show
ing the device of my invention in its ?xed position secur
ing a hatch beam to a horizontal ?ange of the hatch
coaming.
FIGURES 5 and 6 are isometric views showing steps
to lock the plate in position on the chain.
In FIGURE 1 the dotted line indicated by reference
numeral 1%} represents the hatch opening in an upper deck
and reference numeral 12 indicates a hatch opening in
a lower deck. The speci?c elements of the lower deck
hatch which are illustrated in FIGURE 1 are the brow
1d, the hatch coaming l6, and the horizontally extend
ing ?ange vI3 of the beam under the hatch coaming 16.
22 are received in beam socket 20. in FIGURE 4 a de
vice of FIGURE 2 of my invention is shown in its ?xed
position securing king beam 22 to the horizontally ex
tending ?ange 1% in which reversed eye hook 28 engages
the edge of flange 13, reversed eye hook 34 engages the
lifting eye 48 in doubler 46, chain 39 is taut between
reversed eye hook 28 and reversed eye hook 34, plate 36
abuts the eye of hook 342» and slot 42 engages the link
of chain 3%? next adjacent the eye of reversed eye hook
3st thereby preventing movement of the chain 30 through
the plate 36.
To lock a beam in place with the device shown in FIG
URE 2, the second reversed eye hook 34 and the plate 36
are held by the operator in one hand with plate 36 on top,
the chain 343 is played out through the circular opening
As can be seen in this ?gure the brow 14 extends slightly
(it) in the plate 36 and the eye of reversed eye hook 34
above the deck level about the hatch opening 12, the
the queen beams 24 are adapted to be received at each end
until the link 44 has passed through both the circular
opening 4t? and the eye of hook 34. Then, with the op
erator standing on the hatch boards 26 above king beam
22 adjacent to hatch coaming 16 and the point of reversed
eye hook 28 facing the hatch coaming 16 the chain is
swung toward the hatch coarning 16. Simply by main
taining the link 44 level with the top edge of the hatch
coaming during the swing, the chain 30 and ?rst reversed
eye hook 28 swing out and under the hatch coaming 16
and reversed eye hook 28 engages the edge of ?ange I8.
This requires no particular skill on the part of the op
erator. The impetus given reversed eye hook 28 and the
in U shaped beam sockets 2i} and 21 respectively.
lower portion of chain 30 by the chain striking the junc
coaming 16 extends vertically downward into the hatch,
while the flange 18 extends horizontally away from the
hatch opening 12 at the lower edge of the hatch coarn
ing 16. Disposed along the hatch coaming 16 are up
wardly opening U shaped beam sockets 2d and 21. (Only
two of the beam sockets 2t? and 21 can be seen in FIG
URE 1.) Also shown in FIGURE late a king beam 22
having a cross~section in the shape of a Latin cross and
two queen beams 24 having a T shaped cross-section.
The downwardly extending legs of the king beam 22 and
In
FIGURE 1, one of the queen beams 24% is shown received 30 tion of hatch coaming l6 and flange 18 permits hook
255 to engage flange 18 on nearly every attempt. After en
in a beam socket 22. The king beam 22 is centrally lo
gagement of ?rst reversed eye hook 28, second reversed
cated within hatch opening I2 when resting in socket
eye hook 3% is moved along the chain 30 and placed into
Zti. A series of hatch boards 26 are shown positioned
transversely to the hatch beams.
The hatch boards 26
are sized so as to span one-half of the hatch opening
eye 48. The slack in the chain between ?rst and second
reversed eye hooks 28 and 34 is then picked up and the
chain made taut. Chain 3% is then pulled through circu
lar opening 40 in plate 36 until plate 36 is hard against
and abut the king beam 22. The hatch boards 26 are
also supported at one end at the periphery of the hatch
abutting the brow l4 and by a queen beam 24. The ar
the eye of hook 34.
rangement just described is typical of hatch arrangements
tween the links of chain 36 in such a manner that slot 42
of merchant vessels and is such that one—half of the
hatch can be opened by removal or" hatch boards 26 from
one-half of the hatch followed by removal of the queen
beam 24 supporting those hatch boards.
Referring now to FIGURE 2, numeral 28 designates a
reversed eye hook which is attached to a length of chain
engages the link of chain 30 immediately adjacent the
eye of hook 31%. That portion of chain 30‘ between slot
42 and the terminal end of chain 36 connected to plate
36 by means of hole 38 is then released. The weight
of this slack portion of the chain is suf?cient to maintain
plate 36 in vertical position and prevent its jumping out
from between the links of chain 30.
Also illustrated in FIGURE 4 is a particularly advan
tageous embodiment of my invention in which a scissor
or sister hook Sti is permanently attached to anchor
shackle 3'7 connecting the terminal link of chain 3% to
fail by means of an anchor shackle 32.
A second re
versed eye hook 34 is slidably positioned on chain 30' and
is disposed so that the point of the reversed eye hook 34
faces the point of the reversed eye hook 28. Located
above reversed eye hook 34 is a ?at steel plate 36. Near
one end of plate 36 is a small opening 38 to which the
terminal link of chain 31’? is attached by means of anchor
shackle 37. Plate 36 is also provided with a larger circu
plate
Plate 36 is then pulled down be
Thus, after plate 36 has been pulled down be
tween the links of chain 36 in such a manner that slot 42
engages the link of chain
immediately adjacent the
eye of hook 34, the scissor opening portion of sister or
lar opening 49 and an elongated slot 42 communicating
with circular opening at} and positioned on the side of
circular opening at} remote from hole 38. Chain 36 is
scissor hook 56 is attached to the nearest link of chain
3%} in the portion of chain 3t) maintained taut between
slidably positioned through circular opening so. Also
hooks 28 and 34, thereby further insuring that plate 36
will not jump out from between the links of chain 30.
I have found that a device of my invention is satis
advantageously is distinguishable from the other links in 60 factory wherein the component parts are sized and con
nected as follows: The reversed eye hooks have an over
the chain and its function will be explained below. In
all length of approximately 81/2 inches and the chain
practice, chain 39 is approximately 6 feet long and the
employed is any of the standard size coil chains having a
link 44 is located in the chain 34) about 44 inches distant
sui?cient proof test for the particular requirements of
from the tip of reversed eye hook 23.
usage, for example, a % inch diameter coil chain having
FIGURE 3 illustrates the function of slot 42 which is
a proof test of 3,720 pounds is normally quite adequate.
to engage a link of chain 3% about the smallest dimension
With such a chain a 3/s inch anchor shackle is used to
of the link and to prevent passage of the chain 3t“; through
attach the chain to the reversed eye hook or a welded
the plate 36.
connecting link can be used in lieu of the shackle. Also
FIGURE 4 shows in side elevation brow l4, hatch
a 3/3 inch anchor shackle or welded connecting link can
70
coaming 16, horizontal ?ange 18, U shaped beam socket
connect the other end of the chain to the locking plate.
20, king beam 22 and hatch boards 26 as also illustrated
The shape and dimensions of the locking plate can vary
in FIGURE 1. In this enlarged view a doubler d6 hav
depending upon the dimensions of the other members.
ing a lifting eye 48 for lifting the beam is shown ai?xed
Thus, employing the % inch diameter coil chain in which
to the end of king beam 22. Doubler (t6 and king beam 75 the links are approximately 2%s inches long by 17/16 inches
shown in FIGURE 2 is a link 44 located in chain 3@
intermediate reversed eye hooks 28 and 34. This link 4d
3,072,089
5
6
wide, the following dimensions will be adequate for plate
the chain through the plate, the plate being slidably
36:
mounted about the chain through the opening and the
plate being attached at a point remote from the opening
Inches
Thickness
_________________________________ __
1%;
Overall length _____________________________ __ 6%
Width
__________________________ ___ ________ __
3
Diameter of hole 38 ________________________ __ 5/8
Diameter of opening 40 _____________________ __ 1%
Length of slot 42 ___________________________ __ 1%
Width of slot 42 ___________________________ __ 1/2
to the chain at the end of the chain opposite the ?rst
hook means, the second hook means being disposed along
the chain intermediate the ?rst hook means and the plate,
and the plate being disposed along the chain, by means of
the opening, intermediate the second hook means and the
point of attachment of the chain to the plate, whereby
10 when in ?xed position the ?rst hook means engages the
edge of the ?ange, the second hook means engages the
Further, as shown in the drawing, the end of plate 36
eye of the movable body, the chain is taut between the
proximate slot 42 can be semi-circular and the corners
?rst and second hook means, the ?at plate abuts the
of the plate proximate hole 38 rounded. The rounded
eye of the second hook means and the slot of the plate
corners provide protection to the operator by elimination
engages the chain link next adjacent the eye of the sec
of sharp edges, while the semi-circular end of the plate is 15 ond hook means, securing the movable body to the ?ange.
designed to correspond to the shape of the eye of the
2. A device for securing a lifting eye containing hatch
second reversed eye hook. Most advantageously, the
beam to the horizontally extending ?ange of a beam
plate 36 is sized so that the distance between the outer
under the hatch coaming which includes a chain having
end of the slot 42 and the semi-circular end of the plate
a ?rst reversed eye hook attached to one end thereof, the
corresponds to the outside radius of the eye of the second 20 ?rst hook being adapted to engage the edge of the ?ange,
reversed eye hook. With a plate so sized, the chain 30
a second reversed eye hook adapted to engage the eye
is pulled through circular opening 40 in plate 36 until
of the hatch beam, the second hook being slidably
the plate 36 positioned with its longitudinal axis perpen
mounted about the chain through the eye of the second
dicular to the longitudinal axis of hook 34 is hard against 25 hook with the points of the ?rst and second hooks in fac
the eye of hook 34. Still in this position, the plate is
ing relationship, a ?at plate having means de?ning an
pulled between the links of chain 30 in such a manner
opening through the plate for slidably receiving the chain
that slot 42 engages the link of chain 30 immediately
and having means de?ning an elongated slot through the
adjacent the eye of hook 34. Plate 36 is then twisted
plate, the slot communicating with the opening along the
ninety degrees and is locked in place due to the fact that 30 transverse dimension of the slot, the slot sized to engage
the curved portion of the body of the hook overlies the
a link of the chain about the smallest dimension of the
semi-circular end of the plate. This arrangement is
link and prevent passage of the chain through the plate,
shown in FIGURES 5 and 6.
the plate being slidably mounted about the chain through
The particular device made from components having
the opening and the plate being attached at a point re
the dimensions weighs approximately 24 pounds. The 35 mote from the opening to the chain at the end of the
weight of the apparatus can be reduced almost one-half
chain opposite the ?rst hook, the second hook being dis
by the use of a 1%; inch chain with a proof test of about
posed along the chain intermediate the ?rst hook and
2500 pounds. Also if the desired load strength of the
the plate and the plate being disposed along the chain,
apparatus is increased or lessened, it can be sized accord
by means of the opening, intermediate the second hook
ingly.
40 and the attachment to the plate whereby when in ?xed
I claim:
position the ?rst hook engages the edge of the ?ange, the
1. A device for securing a vertically movable eye con
second hook engages the lifting eye of the hatch beam,
taining body to a ?xed ?ange extending away from the
the chain is taut between the ?rst hook and the second
body, which device includes a chain having a ?rst hook
hook, the ?at plate abuts the eye of the second hook, and
means attached to one end of the chain for engaging the 45 the slot of the plate engages the chain link next adjacent
edge of the ?ange remote from the movable body, a
the eye of the second hook, securing the hatch beam to
second hook means for engaging the eye of the body,
the ?ange of the beam under the hatch coaming.
the second hook means being slidably mounted about the
3. The device of claim 2 in which the ?at plate is at
chain through an eye of the second hook means, and a
tached to the chain at a point on the plate more remote
?at plate having means de?ning an opening through the 50 from said slot than said opening.
plate slidably receiving the chain and means de?ning an
4. The device of claim 2 in which the means de?ning
elongated slot through the plate, the slot communicating
the opening and the means de?ning the slot together de
with the opening along the transverse dimension of the
?ne a keyhole shaped opening through the ?at plate.
slot, the slot sized to engage a link of the chain about
No references cited.
the smallest dimension of the link and prevent passage of 55
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