IMPROVEMENTS IN FEEDING BOTTLES, PARTS OF WHICH ARE APPLICABLE TO OTHER PURPOSES
Year: 1872

page_text: LETTERS PATENT to Samuel Kay and Thomas Kay, of Stockport, in
the County of Chester, Chemists and Druggists, for the Invention
of "IMPROVEMENTS IN FEEDING BOTTLES, PARTS OF WHICH ARE APPLICABLE
TO OTHER PURPOSES.”
Sealed the 8th October 1872, and dated the 19th April 1872.
PROVISIONAL SPECIFICATION left by tho said Samuel Kay and
Thomas Kay at the Office of the Commissioners of Patents, with
their Petition, on the 19th April 1872.
We, SAMUEL KAY and THOMAS KAY, of Stockport, in the County of
Chester, Chemists and Druggists, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN FEEDING BOTTLES, PARTS OF WHICH ARE
APPLICABLE TO OTHER PURPOSES," to be as follows:-
;-
The object of this Invention is the application of a simple and inex-
pensive contrivance to feeding bottles for infants and invalids for the
purpose of preventing air being drawn with the liquid food, and consists
in forming a valve seating at the bottom of the glass tube depending
from the ordinary india-rubber tube inside the bottle by contracting the

page_text: orifice of such glass tube by means of a blow pipe, or in any other con-
venient manner; and in applying a valve formed by preference of glass
or any other suitable material to such glass seating, such valve being
prevented rising too far, or coming out of place by indenting the sides of
the glass tube whilst red hot, or the valve seating may be formed by a
short length of india-rubber tubing slipped over the extremity of the
glass tubing.
This Invention is equally applicable for admitting air into feeding
bottles as the liquid is displaced, by being fitted in a tube passing
through the cork, and when so placed serves to admit air to keep the
contents of the bottle sweet and wholesome, and to prevent the contents
running out when the bottle is inverted.
This valve seating and valve being formed of non-corrosive material
renders it peculiarly applicable to those instruments in which it becomes
necessary to avoid the use of metallic or organic materials, such as in
inhaling apparatus, enemas, pumps for acids, malt liquors, or spirits, and
other similar apparatus.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Samuel Kay and Thomas Kay in the Great Seal
Patent Office on the 19th October 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, Samuel
KAY and THOMAS KAY, of Stockport, in the County of Chester, Chemists
and Druggists, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Nineteenth day of April, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, givo
and grant unto us, the said Samuel Kay and Thomas Kay, Her special
licence that we, the said Samuel Kay and Thomas Kay, our executors,
administrators, and assigns, or such others as we, the said Samuel
Kay and Thomas Kay, our executors, administrators, and assigns,
should at any time agree with, and no others, from time to time
and at all times thereafter during the term therein expressed, should
and lawfully might make, use, exercise, and vend, within the United

page_text: Kingdom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "IMPROVEMENTS IN FEEDING BOTTLES, PARTS OF WHICH
ABE APPLICABLE TO OTHER PURPOSES," upon the condition (amongst others)
that we, the said Samuel Kay and Thomas Kay, our executors or
administrators, by an instrument in writing under our, or their, or one
of their hands and seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the
said Letters Patent.

page_text: And in order that our Invention may be more thoroughly understood,
and more readily carried into effect, we have as a special application
hereunto annexed a Sheet of Drawings illustrative of our improvements,
in which Fig. 1 represents an elevation of an infant's feeding bottle,
having our improvements applied as an air inlet and food outlet valve;
Figs. 2 and 3 are modifications and details of the same.
In Fig. 1A is the usual glass tube depending from the flexible
tube B, passing through the stopper of the feeding bottle. To the lower
end C of this glass tube we apply our improved valve in the following
manner: We construct the valve by rotating the end of a glass rod in
a blow pipe flame, or other heating power. This rotary motion produces
a true semi-spherical end, which, when seperated from the glass rod,
constitutes the valve in Figure 2. This may also be made of any other
vitreous material, or of porcelain, and may be wholly spherical, as scen
in Fig. 1, semi-spherical, as seen in Fig. 2, or conical.
I
We construct the valve seating d by heating, and thereby softening
the end of the glass tube C until the orifice or mouth of the tube becomes
partially contracted, when by the pressure of the valve e inside and
against the contracted end of the tube whilst in a soft state a perfect
concave or conical shape is secured corresponding exactly to the form of
the valve.
We form two or more projections f,f (seen best in Fig. 3), within the
tube A by indenting such tube whilst heated to softness by pressure
applied on the outside by any suitable instrument, these projections pre-
venting the valve rising too high, and yet allowing of the passage of the
food.
At H (Fig. 1) we illustrate the manner of applying our Invention as
an air inlet valve to infant and invalid feeding bottles, such valve and
seating being constructed in the manner herein-before described. This
air valve may also be constructed of metal or other suitable material,
and passed through the cork of the bottle in an inverted position, as
shown; that is, with the valve resting upon the projections f.f, in which
position it allows of a free passage of air to supply the place of the food
as the bottle becomes gradually empty, and keeps the liquid food sweet
and wholesome, whilst it is prevented running out when the bottle is
inadvertently turned upon its side or inverted.

page_text: It will be readily apparent that the method herein-before described of
forming a valve, valve seating, and chamber wholly of glass (in lieu of
corrosive metals) or absorbent materials, is especially desirable in such
articles as feeding bottles, inhaling apparatus, and enemas, on account
of its extreme cleanliness.
The Invention is also applicable to pumps and appliances for raising
and controlling the flow of acids, malt liquors or spirits, oils, and
liquids generally, which it is desirable not to bring into contact with
metals or other objectionable substances.
It should be here remarked that we do not confine ourselves to con-
structing the valve seating and chamber at the extremity of a glass tube,
as it may be formed in accordance with this Invention at any point in
the length of such tubing by contracting it whilst hot.
Having thus particularly described the nature of our said Invention,
together with the best methods with which we are acquainted for
carrying the same into practical effect, we desire to state that we are
aware that valves have heretofore been used in feeding bottles for pre-
venting air being drawn with the food, but such valves, valve seatings,
and chambers have not been constructed entirely of glass.