Improvements in Nursing Bottles.
Year: 1889

page_text: Date of Application, 1st Oct., 1889
Complete Specification Left, 1st July, 1890-Accepted, 16th Aug. 1890.
PROVISIONAL SPECIFICATION.
Improvements in Nursing Bottles.
We ANTON CHRISTOPH EGGERS and HENRY GEORGE RETTIG of 1 Adam Street
Brooklyn in the County of Kings and State of New York United States of
America Manufacturers do hereby declare the nature of this invention to be as
follows:-
This invention relates to an improved vent nipple for nursing bottles by which
atmospheric air is admitted to the interior of the bottle while the same is being used
by infants for drinking and so that the vacuum in the bottle is destroyed.
In carrying out our Invention we arrange a tubular stopper to which is fixed a
soft rubber nipple outside the tubular stopper is a cap which fits tightly over the
mouth of the feeding bottle. A vent passage is provided through the tubular
stopper and is provided at its inner end with a flap valve made integral with the
nipple, that closes the vent passage when no pressure is exerted on the same while
it opens the vent passage whenever a partial vacuum is formed in the bottle.
The vent passage is open at the outer end so as to communicate with the
A guard
atmosphere and is moulded into the nipple in the course of manufacture.
shield which is arranged above the cap protects the outer opening of the vent passage
against being closed by the lips.
The vent which is thus given to the interior of the bottle destroys the vacuum
formed in the same by the gradual withdrawing of the liquid by the infant and
facilitates the act of drinking from the bottle.
•
In place of arranging the vent passage in the stopper it may be arranged radially
in the guard shield:
In a modified form of construction the nipple which is also made of soft rubber is
provided with ribs on its outer surface. One of these ribs is made hollow so forming
a vent passage the lower and outer end communicating with the atmosphere and
the upper and inner end with the inside of the nipple and which upper end is provided
with a flap valve as before described and which is also made integral with the
nipple.
The second solid rib serves only for imparting to the nipple a symmetrical shape.
When the nipple is applied to the bottle a partial vacuum is established in the
bottle by the sucking of the liquid from the same and inward pressure is exerted by
the atmosphere on the valve so that it is opened and air admitted into the interior of
the bottle.
If the outlet opening of the nipple is made somewhat larger it can be used with
a'supplemental tube and nipple.
Dated this 1st day of October 1889.
POPPLEWELL & Co.,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Nursing Bottles.
We ANTON CHRISTOPH EGGERS and HENRY GEORGE RETTIG of 1. Adams Street
Brooklyn in the County of Kings and State of New York United States of America,
Manufacturers do hereby declare the nature of this invention and in what manner the
same is to be performed to be particularly described and ascertained in and by the
following statement :-
This invention relates to an improved vent nipple for nursing bottles, by which
atmospheric air is admitted to the interior of the bottle while the same is being used
by infants for drinking and. so that the vacuum in the bottle is destroyed.

page_text: pp
nursing bottles as applied on the bottle and arranged for use with a supplemental
tube and nipple.
Figure 6 is a front elevation of the nipple shewn in Fig. 5.
Figure 7 is a side view and
Figure 8 a section on line y y of Fig. 6.
Similar letters of reference indicate corresponding parts.
In carrying out our invention a nipple A of soft rubber which is provided at the
interior of the cap A' by which it is applied to the mouth of the bottle with a
tubular stopper B that fits on the mouth of the nursing bottle so as to tightly close the
same.
Above the cap A¹ of the nipple is arranged a guard shield C as is well known in
nipples of this kind. A vent passage a extends through the interior stopper B and
is provided at its inner end with a flap valve or tongue made integral with the
nipple and that closes the vent passage a when no pressure is exerted on the same
while it opens the vent passage whenever by the partial vacuum formed in the bottle
the pressure of the atmosphere opens the said flap valve.
The vent passage a is open at the outer end so as to communicate with the
atmosphere and is moulded into the nipple while the same is in course of manu-
facture.
The guard shield C protects the outer opening of the vent passage against being
closed by the lips and insures the proper working of the vent. The vent which is
thus given to the interior of the bottle destroys the vacuum formed in the same by the
gradual withdrawing of the liquid by the infant and facilitates thereby the act of
drinking from the nursing bottle.
In place of arranging the vent passage a in the stopper A¹ it may be arranged
radially in the guard shield C as shown in Figure 4 in which case the flap valve or
tongue 6 is arranged at the inner end of the passage a and is also made integral with
the nipple.
In the modified nipple shewn in Figures 5 to 8 A represents the nipple which is
also made of soft rubber and provided with exterior ribs a' that extend from the
lower rim of the nipple to about the middle of the height of the same.
One of said ribs a is made hollow so as to form the vent passage which com-
municates at its lower and outer end with the atmosphere while its inner and upper
end communicates with the interior of the nipple, and is closed by a flap valve d
which is also made integral with the nipple.
The second solid rib a' serves only for imparting to the nipple a symmetrical
shape.
When the nipple is applied to the bottle a partial vacuum is established in the
bottle by the sucking of the liquid from the same and inward pressure is exerted
by, the atmosphere on the valve d so that it is opened and air admitted to the
interior of the bottle.
:
If the outlet opening of the nipple is made somewhat larger it can be used with a
supplemental tube and nipple as shewn in Figure 5.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :
First In a nipple for nursing bottles provided with an exterior cap, an interior
tubular stopper, a vent passage, a valve at the inner end of the vent passage, said
valve being made interral with the ninnle suhetantialle as ant forth

page_text: Second: A nipple for nursing bottles provided with an exterior rib extending
upwardly from the rim of the nipple, a vent passage in the said rib and a valve
at the inner end of the vent passage, said valve being made integral with the
nipple, substantially as set forth.
Dated this 1st day of July 1890.
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, London, W.C., Agents for the Applicants.