Improvements in Nursing Bottles.
Year: 1896

page_text: Date of Application, 4th Feb., 1896-Accepted, 28th Mar.. 1896
COMI DEL SEMIFICATION.
[Communicated from abroad by THE DOROTHY NURSING BOTTLE Co., of
Cleveland, Ohio, United States of America.]
Improvements in Nursing Bottles.
I, WALLACE FAIRWEATHER, C.E., Chartered Patent Agent, 62 Saint Vincent
Street, in the City of Glasgow do hereby declare the nature of this invention and
in what manner the same is to be performed, as communicated to me to be
particularly described and ascertained in and by the following statement :—
The invention consists of a nursing bottle made of two parts, one of which is.
flexible, and the other rigid, and in which the flexible part operates to prevent
a vacuum in the bottle as the milk is drawn out by the child, and promotes
evenness in the flow of the milk, and in a nipple and false bottoin for the bottle,
all substantially as shown and described and particularly pointed out in the
claims.
In the drawings,
Fig. 1 is a central sectional elevation of my improved nursing bottle, showing all
the parts in full lines and the flexible part in two different dotted lines, as occurs-
when the bottle is partly emptied and wholly emptied, respectively, as hereinafter
more fully described.
Figs. 2 and 3 are end views of differently cut nipples.
A is the upper section of the bottle which, preferably, is made of glass. About.
the mouth of this section is an external annular flange 2, which serves to firmly
secure the nipple B.
The part C consists of flexible material, preferably, vulcanized rubber, made so
thin and light that it will readily respond to suction the infant with practically
no resistance whatever of its own, thus following the withdrawal of the milk and at
last being drawn bodily into the upper half of the bottle and filling the space-
thereof, as seen by upper dotted line 4. The dotted line 3 shows this part partially
collapsed, as occurs when the milk is partly exhausted. About the upper edge of
the flexible bottom part is an annular bead 5 which enters the annular groove or
channel 6 in the lower edge of the upper part A and serves to securely fix part C
on part A by stretching it upon the same.
In Figs. 2 and 3 I show nipples B cut in two ways but both showing mere
slits 9 and 10, respectively which close when suction is relaxed and thus prevent
air from entering the bottle and milk from flowing out. Hence, no air can enter
the bottle as occurs with the old fashioned nipples which were made with
constantly open holes. The advantage of such a nipple with a bottle that contains
no air at all is obvious, because it protects the child from sucking its stomach full
of air and from wind colic which excessive air in the stomach promotes. Further-..
more, this bottle will yield its contents to the child whatever the position of the
bottle, whereas the old fashioned bottle only fed by gravity.
D is a false bottom or case of some light stiff material which completely encloses
the flexible bottom C and engages over the same at its top and over the edge of
the upper part A in such way as to remain fixed until purposely removed. This
prevents the child from handling the flexible bottom C or in any wise interfering
with the flow of the milk. A hole 8 in the bottom of the case D admits air.
In use the bottle is filled through the neck after the two parts A and C are.
connected, just as other bottles are now filled. The nipple B is then put on and

page_text: the collapsible part C is slightly compressed until all the air is expelled, when the
bottle is ready to give to the child. As the baby draws the milk from the bottle,
the collapsible part C follows accordingly and prevents vacuum in the bottle, and
this goes on until the milk is withdrawn and said part B substantially fills the
part A, as seen in dotted line 3.
Having now particularly described and ascertained the nature of the said inver-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A nursing bottle consisting of separable upper and lower parts, the upper
part rigid and having an outlet, and the lower part of a flexible material fixed
detachably to the upper part and adapted to collapse by atmospheric pressure
within the rigid part as said rigid part is being emptied, substantially as
described.
2. A nursing bottle consisting of two parts, one of said parts rigid and having
an outlet constructed to attach a nipple, and the other part flexible and constructed
to be drawn into the rigid part and to fill the interior thereof as the bottle is being
emptied, substantially as set forth.
3. A nursing bottle consisting of a rigid top part open at both ends and
constructed at one end with a neck to receive a nursing nipple and at the other
end to temporarily attach a flexible part, in combination with a flexible and
collapsible part connected to said rigid part and of a size when expanded to fill
the interior of the upper part to the neck, substantially as set forth.
4. In nursing bottles, a bottle having a collapsible lower section and a rigid
casing over said section engaged on the upper part of the bottle, substantially as
set forth.
5. The rigid upper part of the bottle constructed to attach a nipple, and the
collapsible lower part and a rigid guard enclosing said lower part and overlapping
the rigid part on which it is secured, substantially as set forth.
6. The nursing bottle described, consisting of the rigid upper part and the
collapsible lower part, and a nipple constructed to prevent the admission of air
into the bottle, substantially as set forth.
Dated this 3rd day of February 1896.
CRUIKSHANK & FAIRWEATHER,
Chartered Patent Agents,
62 St. Vincent Street, Glasgow, Agents for the Applicant.