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J. w. LESS
NURSING NIPPLE FOR BOTTLES
Filed Nov. 29, 1946
2,442,656 _
Patented June 1, 1948
2,442,656
~NITED STATES PATENT OFF/ICE
2,442,656
NURSING NIPPLE FOB BOTTLES
Joseph W. Less, Clinton, ‘Iowa
1
Application November 29, 1946, Serial No. 712,944
7 Claims. ((31. 128-252)
This invention pertains to improvements on
nursing nipples for bottles.
2
for air, and which may automatically open and
close in the well known manner, and for an
More particularly, the present invention has to
do with a nursing nipple forming the subject of
my patent applicaton Serial No. 696,669, ?led in
the U. S. Patent Oflice September 13, 1946.
An object of the present invention is to provide
understood purpose. Surmounting this domed
member 2, and preferably formed therewith, is a
nipple 4, the construction of which, as with others
shown herein, is the important part of the present
invention.
a valving means for control of the milk supply
within a nipple wherein a wall of the latter and
a valve member a?ixed to the said nipple serve
section, and has the usual cavity 5, the walls
jointly to interrupt ?ow of milk to the nipple from
the source of supply during feeding and, con
trarywise, to restore communication between said
Said nipple may be of rounded form in cross
thereof having a thickness suitable for the pur
pose of said invention, and which in this instance
are outwardly bulged, the whole having a some
what ovoid form.
source and said nipple.
Depending from the upper small extremity of
Another object is that of so organizing a valv 15 the nipple is a stem 6 which may be an integral
ing structure that a valve member and a valve
part of the structure. Said stem is centrally I
seat, as parts of a nipple, will be made to co
located and terminates at its lower extremity in
operate to both permit milk ?ow into said nipple
a valve head ‘I of a coned form, in this instance,
or interrupt said ?ow by the action of the baby,
or having a downwardly and outwardly facing
during feeding, to the end that ntural feeding at 20 surface. In the said upper small extremity of the
a mother's breast will be simulated.
nipple one or more apertures 8 may be provided
Still another object is to provide a valve mem
for feeding, these communicating with the
her and valve seat, as component parts oi’ a feed
cavity 5.
ing nipple, so arranged and correlated that pres
It is observed that the said walls of the nipple
sure applied by the feeding infant upon the walls
of the nipple will result in elongating the latter to
direct the valve seat thereof upon the valve mem
ber;- which latter has a relatively fixed position,
the said walls due to their resiliency, and in as
converge within the said cavity 5 and lie near the
valve-head 1 but are normally spaced therefrom
as at 9. said walls thereof being outwardly and
downwardly inclined forming a coned seat ill
agreeing in angle with the coned face of the valve
suming their un?exed positions when pressure 30 head 1, it also being observed that, normally,
thereon is released, will remove said seat from
the so presented seat It lies above and slightly
distant from said head ‘I. In this relation of the
That the invention may be fully understood,
seat and head it will be seen_that pressure on
the appended drawing is provided forming part
the walls 4 to move them toward each other will
hereof, wherein
35 bring the seat and head into abutting relation
Figures 1 and 2 are longitudinal sections of the
from the fact that as said walls approach each
nipple of my invention in two slightly different
other they are elongated, resulting in depressing
the valve member.
‘
forms.
the seat while also drawing the stem 6 toward said
Figure 3 is a longitudinal section of another
seat, the degree of this coaction depending upon
form of the nipple and wherein a valve seat and 40 the extent of ?exibility of the rubber as well as
valve member are shown in abutting relation as
the resistance thereof to the pressure exerted.
distinguished from said Figures 1 and 2.
For example, if the material in the neighborhood
Figures 4 and 5 are plans, in part, of Figures
of the seat It at the position 2 tends to resist
1 and 2 respectively, and
pressure the most movement would naturally be
Figure 6 is a cross section of Figure 3 on line 45 at the nipple extremity thus raising the valve'
head against the said seat. In any event a com
5-6 of that ?gure.
For the purpose of best showing the invention
plete severing of communication of the cavities
2' and’ 5 results.
the ?gures are shown much larger than the device
as used in practice.
In Figure 2 substantially the same structure is
In Figures 1 and 2 of said drawing is shown any 60 shown as in Figure 1, characters 22, 4', 5', 6' and
‘I’ coresponding, respectively, with 2, 4, 5, 6 and 1
usual container I, such as a glass member,
with which is suitably connected in a detachable
of the latter ?gure. In this instance, however,
manner a socalled “breast member" 2 of rubber
the stem 6' is provided with a transverse passage
in the form of a dome having a cavity 2' which
62 opening into the space 5', while a longitudinal
dome may have at 3, Figure 1, any usual inlet 66 passage 63 communicates with said transverse
2,442,050
3
passage and terminates upon the nipple point as
the feeding aperture.
Figure 3 shows the same structure as that in
the preceding ?gure the breast portion being
identified by 23, the nipple by 43 and the stem and
its valve head by 64 and ‘I2 respectively. The stem
in this form may be‘ a separate member but let
4
pressure of .the tongue, lips and gums upon the .
nipple that forces the milk out. Also the child's
lips and gums act as a valve by shutting oi! the
milk to prevent it from passing back into the
breast, while during the relaxation period, when
the child ceases to draw, the nipple again nat
urally ?lls. Thus the child may have a proper
into the nipple wall and cemented or vulcanized
supply of nourishment during its feeding efforts.
in place. And said stem may have the passages
This same result is achieved by the nipple struc
6’, 63 of Figure 2, or the nipple may have a feeding 10 ture herein described where a. constant supply
aperture corresponding to 8 of Figure 1, or com
of milk is supplied from the bottle as contrasted
bination of both may be used, as desired.
to the customary results in bottle feeding.
In this ?gure the side walls of the nipple are
In use the nipple is ?rst upturned so that the
shown partially collapsed with the valve seat and
pressure of milk in the cavity 5 is assured whereby
valve head in abutment due to the named elonga 15 it may be readily withdrawn from the cavity 2'.
tion of such walls.
The sucking act starts the series of cycles of
It is to be seen that the valving arrangement
alternate pressure on the nipple and the release
employed herein is positive in operation since the
thereof.
opening of and cutting off of cavity communica
During the sucking part of the cycle or imme
tion directly follows the child’s acts and whims 20 diately following it, the child’s tongue, lips and
with respect to pressure upon the nipple and re
gums apply pressure upon the nipple walls thus
laxations of such pressures.
closing the valve 1 and at the same time the ca
conceivably, the abutting faces of the valve ‘I
pacity of the cavity 5 by the collapsing thereof.
and the seat l0 might be otherwise provided in
forces the milk therefrom for feeding, no milk
stead of being angularly. arranged as herein, 25 being permitted to return to said cavity 2’ due
although, perhaps, the latter may be the preferred
to the closed valve. In the removal of pressure
form.
on the walls 4 the valve 1 opens and the partial
The separation space between the seat “I and
vacuum in said cavity 5 causes the same to be
the valve 1 may be but slight due to the extent
?lled from the cavity 2' for the next feeding sup
of the circular exposure of that space so that 80
ply. Alternate pressures and relaxations by the
free passage of liquid in volume is assured. This
infant thus maintains steady milk ilow; Swal
being true, the valve, since lying so close to the
lowing, meanwhile, interrupts the progression of
seat, in fact, becomes a guide in the closing move
ment of the seat portion, a tight seal always re
sulting. The seat portion may be made quite
resistant to distortion by making the wall of suf
cient thickness, so that such tight sealing of the
these cycles, as the child’s natural act, or intuition.
It is believed clear that such a structure will
be seen as serving the purpose based upon nature's
opening is positive.
Having described the structure of the nipple,
method of feeding ?rst described, the‘ bottle
method herein being of advantage over known
methods since having many advantages in ‘re
feeding:
the milk by suction alone causing over exertion,
haps. The frequency of swallowing also depends
required than in employing ordinary methods of
'
the following may be stated concerning the pur 40 spect to the child’s well being.
In present day bottle'feeding the infant derives
pose and advantage of such structure in baby
while at the same time upsetting its tempera
A child’s feeding acts are somewhat rhythmic
ment, and forcing rest‘ periods, whereas in the
and in cycles, i. e., alternate “sucking” on and
release of the nipple. During these rhythmic 45 present structure the usual suction e?orts are
turned to one of pressure acts as in nature feed‘
cycles of alternate impulses and relaxations milk
ing.‘ In the latter manner of feeding the infant
is accumulated in the mouth, mixing with the
does not stop and need not stop for rest periods,
saliva. The child swallows when a su?lcient
amount of milk has accumulated.‘ Swallowing,
and this being true of the method herein the bottle
however, is not necessarily rhythmic but is sub 60 is emptied with ease and tranquility. It has been
ject to the child’s natural acts, or intuition, per
determined that at least one third less effort is
upon the rate of flow of the milk from the nipple.
bottle feeding.
'
This all has to do with the operation of the
'
Iclaim:
present structure. That is to say. half of the 55
1. A feeding device for bottle-fed infants in
cycle is the so called sucking period at which time
cluding a cavitied nipple for receiving a supply
the valve 1 is closed by tongue pressure upon the
of the liquid food, and having a feeding opening,
sides of the nipple, which elongates the latter,
the side walls of the nipple being bulged outward
whereupon the milk is forced out of the nipple
ly, the lower wall of the nipple having an open
cavity 5 into the mouth. During the other half 60 ing and also having a valve seat at said opening,
of the cycle, or when the pressure is removed.
and a valve carried by and depending from the
the valve opens automaticaly and said cavity 5
upper wall of ‘the nipple and terminating at said
is re?lled by the suction set up in that cavity
opening, the valve and said seat adapted to abut
as the nipple regains its natural rounded form.
for closing said opening when pressure is placed
At this time, of course, suction by the child has
upon said walls to elongate them.
ceased since the mouth cavity is constricted in
2. A feeding device for bottle fed infants in
the process of ?attening the nipple, and by the
cluding a cavitied nipple having a feeding open
presence of the milk in said mouth cavity. Fol
ing, the former for receiving a supply of the
lowing this the cycle is repeated.
liquid food, the side walls of the nipple being
Having thus set forth the structure of the nip 70 bulged outwardly, a valve-seat at the lower wall
ple and its operation in respect to the natural acts
of said nipple having an opening therethrough,
of the child the following may be considered.
and a valve carried by and depending from an
It is believed conceded that in nursing at the
other wall of the nipple the same extending into
mother’s breast the "sucking” by the baby does
said opening in the valve seat, the latter adapted
not actually draw the milk but rather it is the 75 to be brought into abutment with the valve to
2,442,656
5
close said opening when pressure is applied to the
said side walls, elongating the same.
3. In a feeding nipple for bottle feeding of in
fants, the combination with a bottle, and a cavi
tied breast portion for attachment to the latter,
and a cavitied nipple substantially ovoid in form
surmounting said breast portion and having a
feeding aperture, the cavities of the two normal
6
side walls of the nipple are elongated by pressure
on said side walls by a feeding infant.
6. In a feeding nipple for bottle feeding of
infants, the combination with a bottle and a cav
itied breast portion for attachment to the bottle,
of a cavitied nipple substantially ovoid in form
surmounting the said breast portion and provided
with a feeding aperture, the cavities of the two
named portions normally communicating, a stem '
ly communicating, of astem within the cavity of
said nipple depending from the point-extremity 10 within the cavity depending from the point-ex
tremity of the nipple substantially central of said
of said nipple, said stem having a portion con
cavity thereof, said stem having a portion con
stituting an abutment lying below and outside
said cavity and facing the cavity of the said
and lying below and outside of the same, a lower
wall portion of the nipple being constricted and 15 breast portion, a lower Wall of the nipple having
a constricted opening through which the stem ex
encircling the stem near said abutment, said
tends, said wall at said opening encircling the
abutment and the constricted portion of said nil)
stem above the named abutment, the latter and
ple adapted to abut to interrupt communication
said nipple wall at said opening adapted to abut
of the two named cavities when the nipple walls
are elongated by pressure upon said walls.
20 to interrupt communication between the two
named cavities, when the side walls of the nipple
4. In a feeding nipple for bottle feeding of in
are elongated by pressure on said side walls by a
fants, the combination with a bottle and a cavi~
feeding infant, said stem having a passage ex
tied breast portion for attachment to the bottle,
stituting an abutment, said abutment lying sub
stantially central of the cavity of said nipple
of a cavitied nipple substantially ovoid in form
tending longitudinally thereof communicating
surmounting the said breast portion and provided 25 with the cavity of said nipple ‘and terminating
at and communicating with said feeding aperture
with a feeding aperture, the cavities of the two
of the latter.
named portions normally communicating, a, stem
7. In a feeding nipple for bottle feeding of in
within the cavity depending from the point-ex
fants, the combination with a bottle and a cavi
tremity of the nipple substantially central of said
cavity thereof, said stem having a portion con 30 tied breast portion for attachment to the bottle,
of a cavitied nipple substantially ovoid in form
stituting an abutment lying below and outside said
surrounding the said breast portion and provided
cavity and facing the cavity of the said breast
with a feeding aperture, the cavities of the two
portion, a lower wall of the nipple having a con
named portions normally communicating, a stem
stricted opening through which the stem extends,
said wall at said opening encircling the stem 35 within the cavity depending from the point-ex
tremity of the nipple substantially central of said
above the named abutment, the latter and said
cavity thereof, said stem having a portion con
nipple wall at said opening adapted to abut to
stituting an abutment lying below and outside
interrupt communication between the two named
said cavity and facing the cavity of the said
cavities when the side walls of the nipple are
elongated by pressure on said side walls by a feed 40 breast portion, a lower wall of the nipple having
a constricted opening through which the stem
ing infant.
extends, said wall at said opening encircling the
5. In a feeding nipple for bottle feeding of in
stem above the named abutment, the latter and
fants, the combination with a bottle and a cavi
said nipple wall at said opening adapted to abut
tied breast portion for attachment to the bottle,
to interrupt communication between the two
of a cavitied nipple substantially ovoid in form
surrounding the said breast portion and provided
named cavities, when the side walls of the nipple
with a feeding aperture, the cavities of the two
are elongated by pressure on said side walls by
named portions normally communicating, a stem
a feeding infant, said stem being separate from
within the cavity depending from the point-ex
the nipple structure and insertable into its wall
tremity of the nipple substantially central of said 50 and secured leaktight therein.
cavity thereof, and integral with said nipple, said
JOSEPH W. LESS.
stem having a portion constituting an abutment
REFERENCES CITED
lying below and outside said cavity and facing
the cavity of the said breast portion, a lower wall
The following references are of record in the
of the nipple having a constricted opening 55 ?le of this patent:
through which the stem extends, said wall at said
UNITED STATES PATENTS
opening encircling the stem above the named
abutment, the latter and said nipple wall at said
Number
Name
Date
opening adapted to abut to interrupt communica
Trotter __________ _- Oct. 29, 1940
2,219,604
tion between the two named cavities when the 60
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