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Патент USA US2403677

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July 9, 1946.
w. J. MORLOCK ET AL
2,403,677
QUICK DETACHABLE AUDIO FREQUENCY CONNECTOR
Filed Oct. 25, 1943
ZIShee’cS-Sheet 1
'July 9, 1946
w. J. MbRLocK ETAL ,
2,403,677
QUICK DETACHABLE AUDIO FREQUENCY CONNECTOR
Filed Oct‘. 25, 1943
2 Sheets-Sheet 2'
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Patented July 9, 1946
2,403,677
UNITED STATES PATENT [OFFICE
QUICK DETACHABLE AUDIO-FREQUENCY
“\
CONNECTOR
William Joseph Morlock and Richard Clabeau
Willman, Indianapolis, Ind., assignors to Radio
. Corporation of America, a corporation of Dela
ware
Application October 25, 1943, Serial No. 507,630
4 Claims.
(Cl. 17,9'—1)
~
1
2
,
This invention relates to a quick detachable
waterproof audio frequency connector partic
ularly adapted to connect telephone sets to tele
phone lines in exposed places subject to the in
fiuence of water. This‘ connector is peculiarly
adapted to, the connection of telephone sets to the
lines on submarines so that the telephone Set can
be used on the deck or in such exposed locations
on the submarine and can be quickly detached
ing speci?cation and inspection of the accom
panying drawings in which:
Figure l is a section, taken on the line 1-1 of
Fig. 2, of the connector and its attached plug,
Figure 2 is a, top’vlew of the connector with the
plug removed,
,
I
Fig. 3 is a sectional view taken on the
‘ line
III-III of Fig. 1, and
Fig. .4 is a partly diagrammatic sectional view
without any possibility of leakage. The connec 10 of a submarine showing a typical telephone in
tion is also adapted to be used in any exposed
stallation within the invention.
position, for instance on decks of ships where it
Referring. ?rst to Fig. l, the base of the con
may be exposed to spray or waves.
nector includes the casting‘or forging l0, which
The invention involves a housed and her
is adapted to be secured to an appropriate con
duit 38 (Fig. 4) at H. The member i0 is prefer
metically sealed transformer half and a quickly
detachable transformer half connected to the
telephone set. The term “transformer half” does
ably of tinned bronze although it may be made
will constitute a complete transformer. These
transformer heads are arranged to be placed in
to which the device is to be subjected. The
of such other material as is appropriate and is
not refer to a geometrical half of a transformer
preferably provided» with a pair of oppositely lo
nor to the exact proportions of the core nor to
cated lugs Na, lllb (Fig. 2) for attaching the
the turns ratio, but it refers to a core member 20 said base member to the bridge or hull 35 of a
with one winding which, in conjunction with the
submarine 31 (Fig. 4). The conduit or cable con
other transformer portion comprising an addi
nections 33 (Fig. 4) may be made in any man
tional core member and an additional winding,
ner appropriate to resist the water pressure
proper juxtaposition so‘that audio frequency cur
cover i2 is made of an appropriate mate
rial, such as a laminated phenolic conden
rent can be transmitted from one half to the other
sation product, which is adapted to withstand
high hydraulic pressure without losing its insulat
tion by which water can be communicated from
ing properties. The cover is secured to the base
one half to the other. The removable half is con 30 In by screws H. A rubber gasket II is clamped
half but without any mechanically open connec- '
nected to the telephone set in the usual manner,
for example by a ?exible cord and the disconnec
tion of the telephoneset can be accomplished by
between the cover and the base in order to secure
a water-tight joint. A transformer half i5 is se- ,
, cured to the under side of the cover i2 by an ap
a jerk on the cord.
propriate clamp 33. This transformer half
One object of the invention is to provide a 35 reaches to the laminatedphenolic layer l1 and is
fitted tightly through ‘the cover plate 12. The
waterproof telephone connector unit.
layer I1 is therefore supported under almost its
Another object of the invention is to provide
entire area by the cover plate l2 and the core end
a telephone connector unit which will withstand
pieces l5a, l5b of the transformer IS. The layer
. several hundred pounds water pressure.
H is secured to the cover plate l2 by Bakelite ce
Another object of the invention is to provide a
ment or similar material so that the members l2
telephone connector unit which can be used sub
merged.
and I‘! are substantially a single piece of mate
rial- The thickness of the member I‘! determines
Another object of the invention is to provide a
telephone connector unit which remains her 45 the air gap in the transformer core although the
thickness of the layer I1 is primarily determined
metically sealed whether the telephone is con
by the water pressure which it will be compelled
nected to the unit or not.
to stand and the loss level which is permitted in
Another object of the invention is to provide a
this apparatus. In order that the transformer
telephone connection which is instantaneously
half 15 should co-act with the other transformer
detachable.
50 half properly and prevent low frequency loss with
Another object‘ of the invention is to provide a
this» wide air gap, it is desirable to' introduce a
telephone connection which will not short circuit
capacitor it connected across the transformer
when immersed in sea water.
half I 5. The capacitor and the winding 19 on
Other and incidental objects of the invention
the transformer half l5 are connected to an ap
will be apparent from the reading of the follow
propriate terminal board Ii.
-
a
8,408,677
3
The connection to this receptacle and line con
nected transformer half is accomplished by a
plug generally indicated at 20. This plug includes
a transformer half 2| adapted to cooperate with
the transformer half It, and the transformer half
2| has an appropriate winding 22 to cooperate
with the telephone set 40 (Fig. 4). It should be
noted that this connection does not transmit
direct current and that there )is no need for trans
mitting direct current since this type of unit is
4
resistance cement in addition to the gasket 32
so that it is, in turn, pressure-proof. If a sub
marine is sunk or disabled, communication can
be had with the interior of the submarine through
this pressure-proof plug, and even if the subma
rine is lying on the bottom in several hundred
, feet of water communication can be carried on
continuously with the surface.
We claim as our invention:
1. Apparatus for audio frequency communica
tion with the interior of a ship having a metallic
used largely with sound powered telephones, i. e.,
hull including telephone instruments within said
the transmitter of the telephone functions as a
hull, an insulating member forming a watertight
generator and the receiver is of the electro-dy
portion of said hull, a transformer half contained
namic type. The unit is however adapted to func
tion with any other type of telephone provided 15 under said member with its core extending into
said member, the transformer half being elec
that it does not require the transmission of direct
trically connected with the telephone instruments
current. For example, ampli?ers may be sep
within said hull and being adapted to cooperate
arately installed on either or both sides of the
with an adjacent transformer half located in a
connection if desired. The plug 20 has a substan
removable plug outside of said cover.
tially circular base member 23 which is adapted
2. Apparatus for audio frequency communica
to be held to the surface of the member i1 by
tion with the interior of a ship having a metallic
appropriate spring clips 24 attached to the mem
hull including telephone instruments within said
ber l2 and cooperating with a circular projec
hull, a metallic housing connected to the interior
tion on the member 23. The member 23 is held
in appropriate orientation by a flat member 25 25 of the hull, an insulating cover hermetically
sealed to said housing, a transformer half con
secured into the member l2 and cooperating with
tained in said housing with its core extending into
a flat surface 26 on the base member 23. This
said cover, the transformer half being electrically
arrangement compels the core halves of the trans
connected with the telephone instruments within
former half 2| to be accurately located in respect
said hull and being adapted to cooperate with
to the core halves of the transformer half IS.
an adjacent transformer half located in a remov
The base 23 is supplied with an appropriate cover
able plug outside of said cover.
member 21 and an appropriate clamp member
3. Apparatus for audio frequency communica
20 for securing the connecting cord. ‘
tion with the interior of a submersible shipvhav
The transformer half 2|, 22 is secured to an
ing a metallic hull including telephone instru
insulating member 29 by an appropriate clamp 30
ments within said hull, a non-metallic portion in
and the insulating member is secured in the base
said hull, a transformer half contained under
member 23 by an appropriate threaded collar
said portion with its core extending into said por
3|. The insulating member” extends into con
tion, the transformer half being electrically con
tact with the member I1 when the plug is at
tached to the receptacle. The insulating member 40 nected with the telephone instruments within said
hull and being adapted to cooperate with an ad
29 may be sealed on its exterior surface by an
jacent transformer half located in a removable
appropriate layer of insulating material to pre
plug outside of said portion.
vent any entry of water.
4. Apparatus for audio frequency communica
The particular plug described is intended to
_ accommodate an ordinary cord 34 (Fig. 4) such 45 tion with the interior of a submersible ship hav
ing a metallic hull including telephone instru
as will be found on sound powered telephones,
ments within said hull, a metallic housing 'con
and the assembly is particularly adapted for use
nected to the interior of the hull, an insulating
between the bridge 35 and the interior I! of a
cover hermetically sealed to said housing, a trans
submarine 81. The plug 20 is releasable from
the base or receptacle by a slight pull, and if the 60 former half contained in said housing with its
core extending into said cover, the transformer
- submarine is about to dive the operator of the
half being electrically connected with the tele
telephone set, with his telephone set, merely picks
phone instruments within saidyhull and being
up the plug and enters the submarine. The plug
adapted to cooperate with an adjacent trans
20 may be connected to a pressure proof cable (in
stead of to the ordinary telephone cord 34), the 55 former half located in a removable plug outside
of said cover.
‘
insulating member 29 may be secured in the same
WILLIAM JOSEPH MORLOCK.
way as the member l1, and the cap 21 may be
RICHARD CLABEAU WILLMAN.
secured to the base 23 with appropriate pressure
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