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Патент USA US2404681

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My 23, 1946.
Filed ‘Sept. 2, 1942
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Fig. 1
Fig. 2
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Patented July 23, 1946
William R. Baack, Long Island City, N. Y., as
signor to Coston Supply Company, Inc., New
York, N. Y.
Application September 2, 1942, Serial No. 457,034
5 Claims. (01. 9—8.3)
This invention relates generally to life saving
devices and has particular reference to devices
for marking positions such as the positions of life
sired material, but is preferably composed of a
synthetic resin such as methyl methacrylate.
Any suitable unbreakable material which will
buoys, rafts and similar things provided for use
serve the purpose may be used, the synthetic res
in marine accidents or disasters.
A main object of the invention is to provide a
ins being preferred because of their comparative‘
ly low cost, their capacity to resist weathering;
buoyant'signal light which contains a lamp and
and their great strength and durability in serv
a source of lighting current so constructed that
ice. The upper end of the outside casing‘has a
it can be thrown from shipboard to light a posi—
translucent or transparent cap I I, which is shown
tion or which, when attached to a life buoy or 10 as a separate part cemented on the tubular cas
similar ?oating device, will be visible both to men
ing Hi. In the event that the material for the
needing the help of such ‘things to keep a?oat
outside casing is transparent,'the cap H may be
and to rescuers looking for survivors.
a unitary part of the casing.
Another object is to provide a buoyant light
Around the casing I0 is a’band I? of corrosion
which is simple in construction and canbe man
resisting material which is provided with means
ufactured at a relatively low cost, thereby foster
such as ring l3, for a line by which the apparatus
ing the use of the devices in greater numbers
may be connected to a life buoy or' any other
than if the device was complicated and sold at a
high price. Each life buoy on a ship can be pro
vided with one of the signal lights and others
may be kept in positions on ships where they may
readily be seized and thrown overboard to mark
a position which is later to be relocated.
Still another object is to provide a device of the
able material being lead and sufficient antimony
to give the hardness which will prevent the cap
character described which, because of the mate- _ ’
from being easily damaged by‘ accidental shocks
desired article.
The end of the casing I I], which constitutes the
lower end when the device is a?oat, is threaded
to cooperate with threads on a metallic cap l4.
This cap is preferably of lead or lead ‘alloy, a suit
rials used, is light in weight and therefore easily
handled, but which is nevertheless strong and
durable; and proof against deterioration.
Another object of the invention is to provide
Or blows, this hardness also being desirable to
facilitate threading and knurling as shown at I5.
Centrally of the casing I0 is a tube [6 which is
automatically right itself when thrown overboard “
or put a?oat and as an incident to righting itself
and the edges fastened together after the parts
hereinafter referred to have been assembled on
what becomes the inside of the tube when the
composed of Bakelite or a ?brous insulating ma
a device of the character indicated which will, 30 terial. Preferably the tube is rolled from a sheet
will automatically close a circuit through the
lamp from the source of current. The construc
tion is such that the light Will remain lit for
many hours, there being nothing about the con
tube is completed.
(a). Cl
struction which can readily be broken or disar~
The upper end of the tube 16 is held in position
relative to the outer casing H! by a ?ange I‘! on
a Wooden member which has a portion [8 insert- '
ed in the end of the tube and fastened in posi
With the foregoing and other objects in view
tion by screws or the like as at I9; The upper
which will become apparent later, the invention 40 face of the member l7, l8 carries a re?ector 2|.
consists in a novel construction and arrangement
This re?ector is preferably composed of bright
of parts and materials, the novel features of‘
chromium on a suitable backing metal and is se
which are pointed out in claims appended here
cured in position by spinning the metal over and
to and a preferred embodiment of which is here
under the ?ange l1,
inafter described with reference to the drawing
Mounted centrally in the member l1, I8 is a
accompanying a part of this speci?cation.
lamp socket normally containing a lamp 22 which
‘ In said drawing:
is, of course, above the re?ector 2| and under the
Fig. 1 is‘ a longitudinal section through one of
transparent or translucent portion I I of the out
the devices, and
Fig. 2 is a side elevation of the complete d&- .j;
vice shown in the position it occupies when ?oat
ing and with the lamp lit.
The construction shown in the drawing is that
of an illustrative embodiment.
one or more dry batteries B, the construction
shown employing three batteries stacked in the
usual way. The central pole of the top battery is
It has an out
side tubular casing lll‘which may be of any de
side casing.
Mounted in the central or internal tube l6 are
in contact with the head of a screw 231 clamped
in a disk 24 fastened within, the tube by screws
or beads 25. The upper end. of the screw 23 is
provided with binder nuts holding one end of a
lead 26 which is connected to one of the termi
nals in a mercury switch designated generally at
21. The other terminal of the switch is connect
By unscrewing the metallic cap [4, the irmer
tube It and all of the parts assembled in or upon
it may readily be removed and repaired, if re
pairs are required, or the batteries and the lamp
renewed. Further, the construction as a whole
is simple and so sturdy that it will not be seri
ously damaged or put out of commission by any
ed through the lamp socket vand the lamp by
leads 28 and 29, the latter lead having its end
thing that :is ‘likely to strike it either while in its
soldered or otherwise ‘secured to a strip 3| which
is secured to and extends longitudinally of the
bracket or when a?oat. All of the exterior parts
inner tube I6. In the construction shown, the LO;2 which are exposed to air and water are of ma
strip 3l'is formed over the edge and into the in- 1
terials which will not deteriorate so that the
terior of the tube l6 as illustrated at 32 vto make
"device is always in dependable condition.
it convenient to connect the lead 29..
While it is ‘not .an essential thing, it is pre
The metallic cap It supports a" spring 31 which
constitutes part of the circuit and'yielding'lyholds V
‘ferred :to employia- ring or gasket 45 Within the
metal cap M, which is forced against the end of
the batteries B in circuit-making contact each
the exterior . casing ID to make a water-tight
with the others and with the ‘screw 1'23. 'The cap 1
seal when the cap‘is screwed into position.
l4 also is provided with means for holding the
lower end of the internal tube l6 properly spaced
‘In explaining the illustrative embodiment, the ‘
construction has been set forth in detail, but it is
from the casing 11!. In the form shown, a cen 20 the desire not to vbe limited by said explanation
tral ?ange '41 is provided with internal ‘threads
except to the-extent indicated in the claims which
cooperating with threads on the exterior of the
tube 1.0. The ?ange 4| is preferably chamfered
What-is claimed is:
or beveled so that when it ‘has been screwed into
l. A buoyant light supporting .marker com
position on the tube US it will ‘make good elec
prising an outer casing having a ‘translucent ‘cap
trical contact with an out-turned portion-or ex
sealing one end, a central tube extending .longi
tudinally of the casing, a‘member closing oneend
tension 42 .on the connector strip 31.
The ‘mercury switch, shown conventionally at
of the tube having a?ange spacing said end from
the outer casing, a re?ector on said member un—
.21, is held by a clampl4‘3 secured on the inner face
der the translucent ‘cap, a lamp socketmounted
- of the supporting tube; 16. This makes it a sim
in said member centrally of the reflector and
ple matter 'to' assemble the switch-securely in
containing a lamp, batteries and circuit devices
position so that it will-be sure to be effective at
including a mercury switch mounted in the-cen
all times when it should be brought into play.
tral tube and forming part of ‘the “circuit from
The :metal band .12 may be attached in ‘any
the batteries through the lamp socket and lamp,
suitable way, but it is preferred to have it held
a water tight weighted cap closing the end of
:in .a ?at-bottomed groove 4'4 ‘around the ex
the outer casing opposite the translucent cap, .
terior of the outside casing Hi. The groove and
and metallic :means carried by said cap for sup
‘band ‘are preferably located .on ‘the exterior of
the :casing at :a point where the lower edge of 40 porting the ‘batteries in the central tube and
spacing the tube from the outer casing, the cap, ‘
the band will ‘be approximately at the water line
and said means constituting a ‘part of the circuit
when the device is ‘put a?oat.
through ‘the batteries and {the lamp.
‘The amount of material in the ‘metallic cap
2. .A buoyant ‘lightsupperting marker compris
"I4 is regulated so as to give ‘the necessary weight
ingran outer casing having a transparent ‘cap at
vto cause the buoyant device ‘to right itself and 45 ‘one end, ,a central tube extending-longitudinally
‘keep it in ‘the position shown in Figs. 1 and 2
of the casing, a :member closing lone {end of the
This does not mean ‘that a con
tube and-constructed to space said end from
siderable mass ‘of metal is needed in the cap M
the outer casing, a re?ector attached to said
.as the apparatus as a Whole is of a comparatively
member, .a lamp socket mounted in said member
light weight.
' .
60 centrally of the re?ector adjacent the transpar
In installing the devices on board ships, they
‘ent'cap and containing a lamp, batteries and
are put in brackets, similar ‘to the brackets em
‘circuit devices including a mercuryswitch-mount
ployed for ?re extinguishers and similar things,
-ecl;in the central tube and iorming part of the
which permit ready removal of ‘the devices from
circuit from the batteries through the lamp sock
thebrackets. Usually such ‘brackets have sockets 65 -et and lamp,‘ and a lead ‘alloy cap closing the
in which the removable device rests and pairs of
end. of the outer casing opposite the lamp and
spring ‘clamps or fasteners which will hold. ‘thev
having a central portion holding the batteries ‘in
device ?rmly in (position and at the same time
position and the central tube in spaced relation
permit its ready removal from .the bracket. When
with the-outer casing, said cap constituting {a part
installed in its ‘bracket, the transparent or trans
_ of the circuit ‘between thebatteries and thelamp.
.lucent end *H is "downward, in which position
3. An apparatus of the character described
the mercury -in~the switch .21 will'be away from
comprising a'tubular :outer casing large enough
to give the desired buoyancy-to ‘the :apparatus as
the contacts in the switch and-there will be no
current ‘through the :lamp .212. When the de
a whole and having one end :closed --by ‘a trans
vice is put ‘a?oat, as by throwing it overboard, 65 parent water-"tight cap, a 'tube‘ within and "of
either alone or connected by :a line .to a life buoy
-or similar thingf'the weighted cap M will ‘cause
the device to right itself so that the mercury in
:the switch 2'! will ‘close the contacts ‘and the 70
‘lamp 1-22 will become lighted. 'The lamp will
remain lighted ‘until ‘the device is Iup-ended ‘or
:until the batteries are exhausted. The batteries
B 'have-su?icientcapacity to keep the lamp light‘
ed ‘for ten ‘hours or more.
smaller diameter than the outsid'ezcasing,v spacing ’
means consisting in ‘part-‘of a re?ector forfhol'ding
the one end of the inner tube centered with ‘
reference to ‘the outer casing, a weighted :metallic
cap for closing the other end of the inner tube
and the end of the outer casing; ‘said cap lhaving
concentric portions threaded to engage ‘threads
on ‘both the outer ‘casing and the inner tube, bat
75 teries held in contact position by the cap within
the inner tube, a lamp mounted in the aforesaid
spacing means adjacent to the re?ector, a circuit
between the batteries and the lamp which‘ in
cludes the weighted metallic cap, and a mercury
switch in the circuit for opening and closing the
circuit by changes in position of the assembled
4. An apparatus of the ‘character described
also forming a part of the circuit between the
batteries and the lamp.
5. A buoyant light supporting marker com
prising an outer casing permanently sealed at one
end by a transparent cap, a central tube of in
sulating material extending longitudinally of the
casing, a spacing member secured within the
upper end of said tube and constructed to space
said end from the outer casing, a re?ector on the
comprising a tubular outer casing large enough
to give the desired buoyancy to the apparatus as 10
upper surface of said spacing member, a lamp
a whole and having a translucent closure at one
mounted in said member centrally of the
end, a tube of insulating material within and of
re?ector adjacent the transparent cap and con~
smaller diameter than the outside casing, spacing
taining a lamp, batteries in the lower part of the
means for holding one end of the inner tube cen
central tube, means including an adjustable con
tered with reference to the outer casing, a re?ector 15
tact for holding the batteries against movement
mounted on said spacing means and under the
upward in the central tube, circuit devices in
translucent closure, a lamp socket mounted cen~
cluding a mercury switch mounted within the
trally of the spacing member and re?ector, bat
central tube and forming part of the circuit from
teries and circuit devices intermediate the lamp
and batteries supported by the central tube, said 20 the batteries through the lamp socket and lamp,
a removable metal cap closing the lower end of
circuit devices including a mercury switch oper
casing and having a central portion holding
ated by change of position of the device, and a
the central tube in spaced relation with the outer
lead or lead alloy cap closing the end of the
casing, said cap and said portion constituting part
outer casing opposite the translucent end and
of the circuit between the batteries and the lamp,
having an internal portion cooperating with the
25 and a spring compressed between the cap and the
inner tube to hold said tube centered with refer
lowest battery constituting part of said circuit.
ence to the outer casing, said internal portion
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