Improvements in Tea-pots, Coffee-pots, and other similar Receptacles, to Facilitate the Pouring Out of the Contents of the same.
Year: 1886

page_text: Date of Application, 11th May, 1886.
Complete Left, 10th Feb., 1887.
Complete Accepted, 11th Mar., 1887.
Improvements in Tea-pots, Coffee-pots, and other similar Receptacles,
to Facilitate the Pouring Out of the Contents of the same.
1 JOHN JAMES ROYLE of 27 and 29 King Street West, Manchester, in the
County of Lancaster, do hereby declare the nature of my invention to be as
follows:-
:-
The object of these improvements is the construction say of an improved tea-pot
which shall not require to be lifted off the tea-tray to pour out or withdraw the
contents, and consists in the application of any suitable displacing action whereby a
sufficient pressure is exercised upon the surface of the liquid in the tea pot to cause
the same to rise in and overflow through the spout.
In carrying out my invention I find that a bottomless inner vessel fitting loosely
into an outer vessel upon the principle of a gasometer answers the purpose and in
order to operate the same I arrange a spring between the two vessels giving the inner
one a constant tendency to rise whilst a hole formed through the depressing knob or
handle serves as an inlet for the admission of air in exact proportion to the liquid
withdrawn at each depression of the inner vessel.
In action and in order to pour out the contents the operator simply puts a finger on
to close the said hole and then presses down the inner vessel. This, in turn, causes a
pressure to be exercised upon the liquid which, rising between the two vessels and in
the spout, so overflows the latter until the desired quantity, say to fill a cup is with-
drawn when the finger is removed and the inner vessel, under the action of the spring
and drawing air in through the hole as aforesaid, rises to the starting point and is ready
for the next pouring operation.
Instead of a gasometer action it will be apparent that a piston or diaphragm or the
pneumatic action of a flexible ball and tube or air pump or its mechanical equivalent
might be substituted-the novel and essential feature in the invention being, as above
described, the exercising of pressure upon the surface of the liquid to cause it to
overflow the spout as aforesaid.
The improvements are equally applicable to coffee-pots, cocoa-pots, milk jugs,
water-jugs and to other similar receptacles containing liquid.
This construction affords facilities for the introduction of a perforated cage under
the displacer, to contain the tea, coffee, or other solid ingredients and whereby the
same are sieved and prevented from escaping with the liquid.
JOHN G. WILSON,
Agent for the Applicant.

page_text: Improvements in
to Facilitate the Pouring Out of the Contents of the same.
I JOHN JAMES ROYLE of 27 and 29 King Street West, Manchester, in the
County of Lancaster, Mechanical Engineer, do hereby declare the nature of my
invention and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement :-
The object of this invention is the construction say of an improved tea-pot which
shall not require to be lifted off the tea-tray to pour out or withdraw the contents and
consists in the application of a suitable displacing action whereby a sufficient pressure
is exercised upon or in the liquid contained in the tea-pot to cause the same to rise
in and overflow through the spout.
On the accompanying drawing, Sheet 1, 1 illustrate several diagram views from
which the principle of action underlying my invention will be readily apparent, and
I will now proceed to describe the same with the assistance of the various letters of
reference marked upon the several Figures.
In the tea-pot illustrated by diagram Fig. 1. a. is a bottomless inner vessel fitting
loosely into an outer vessel b. upon the principle of a gasometer. I arrange a long
spiral spring c. between these two vessels giving the inner one a constant tendency to
rise whilst a hole d. formed through the depressing knob or handle e. serves as an
inlet for the admission of air in exact proportion to the liquid withdrawn at each
depression of the inner vessel.
In action and in order to pour out the contents, the operator simply puts a finger
This in turn causes
on to close the hole d. and then presses down the inner vessel a.
a pressure to be exercised upon the liquid which, rising between the two vessels and
in the spout. so overflows the latter until the desired quantity say to fill a cup is
withdrawn when the finger is removed and the inner vessel under the action of the
spring and drawing in air in the direction of the arrows through the hole d. as
aforesaid, rises to the starting-point and is ready for the next operation.
In diagrams Figs. 2. and 3. the displacing action is shewn as obtained by the
application to the tea-pot h. of an india-rubber or other elastic ball ¹ provided with a
hole. the equivalent of d. in Fig. 1. which hole being closed by the finger and the
ball squeezed so puts the desired pressure upon the surface of the liquid-the lid of
the tea-pot being, in this case, made air-tight, or a similar action could be obtained
by an air pump or its mechanical equivalent, for instance as in diagram Fig. 4. where
the displacing action is obtained by means of a diaphragmn of india-rubber or other
suitable material i. caused to rise and fall in the cylindrical casing k. by being con-
nected to the hollow operating spindle 7. and knob m.-the cylindrical casing being
arranged with flanges as illustrated and so constituting the air-tight lid of the tea-pot.

page_text: On Sheets 2. and 3. of the accompanying drawings Figs. 5 and 6. represent side
sectional views (drawn about full size) of a tea-pot embracing my improvements as I
prefer to carry them out in practise. These tea-pots only differ in design and in the
spout in Fig. 6. being carried down on the inside to the bottom of the tea-pot. The
same letters of reference refer to both views.
In carrying out this arrangement of my invention I employ a bottomless vessel A.
hereinafter called the displacer fitting like a piston into the top of the tea-pot B. and
practically forming the lid thereof as illustrated and which displacer is capable of
sliding up and down or rising and falling through the cylindrical casing C. Through
the non-conducting knob or handle D. of this displacer A. I form a hole E. which
serves as an inlet for the admission of air in exact proportion to the liquid withdrawn
at each depression of the displacer as hereinafter described.
In action and in order to pour out the contents of this my improved tea-pot the
user simply takes hold of the knob or handle D. and so raises the displacer A. say
to the position indicated by the dotted lines. He then places a finger upon the top of
the hole E. so as to close the same and gently presses down the displacer. In so
doing and as the displacer is thus lowered again into the tea-pot, a pressure is
exercised upon the liquid, which, having a free outlet through the spout F. so rises
therein until it overflows at its mouth G. This pouring action continues until the
desired quantity of tea say to fill a cup is withdrawn when the finger being removed
from the hole E. the pouring action instantly ceases.
To prevent the slight pouring out of the contents of this my improved tea-pot
self-actingly and owing to the expansion of the air when first filled I provide a
groove H. (as indicated by the dotted lines) on the outside of the cylindrical surface
of the displacer A.-seen also in Fig. 7, Sheet 2, which is a sectional plan of the
displacer A across the line a-b. in Figs. 5. and 6.-the bottom of this groove H.
extending just below the casing C. and the top of the same opening into the atmo-
sphere and thus forming a channel of escape for any pressure. If it be desired a
long spiral spring may be applied as in diagram view Fig. 1. inside the displacer and
in this case the withdrawing operation would be single-acting and would only require
the operator to press down the displacer A.
It will be readily apparent that, instead of this hollow and bottomless displacer A.,
a solid piston could be arranged to slide up and down in the cylindrical casing C.
with like effect or that a displacer consisting of a solid block might be substituted
for the displacer A. and be made to descend into the liquid so as to displace the same
but I should consider such forms to be less convenient methods of performing my
invention.
Although only hereinbefore described as applied to a tea-pot the improvements are
equally applicable to coffee-pots kettles, cocoa-pots, milk-jugs, water-jugs, and other
similar receptacles containing liquid and whether constructed wholly or partially of
metal earthenware or other suitable material.
It will be thus apparent that the novel and essential feature in this my invention.
consists in the simple means of exercising pressure upon or in the liquid to cause it to
be displaced and to overflow the spout of the vessel as aforesaid.
In my provisional Specification I described a perforated cage for containing the
tea leaves but this I now find to be old and unnecessary and hence I desire to disclaim
the saine.
Having thus particularly described and ascertained the nature of my said invention
together with the best methods with which I am acquainted for carrying the same into
practical effect, I wish it to be distinctly understood that I do not confine myself to
the precise details, relative proportions or dimensions hereinbefore described and
illustrated on the accompanying drawing, as the same may be considerably varied
without departing from the invention but what I claim is :-
1st. The improvements in tea-pois, coffee-pots, and other similar receptacles,
substantially as and for the purposes herein before described.

page_text: 2nd. The improved apparatus for exercising pressure upon the liquid contained in
a tea-pot, coffee-pot, or other similar receptacles to withdraw the contents thereof by
displacement and in lieu of lifting and tilting the vessel itself as heretofore, substan-
tially as hereinbefore described and illustrated in the accompanying drawings.
"
3rd. The application to tea-pots, coffee-pots, and other similar receptacles of a
displacer" or its equivalent forming the lid thereof and operating substantially as
and for the purposes hereinbefore described and illustrated in the accompanying
drawings.
JOHN G. WILSON,
Patent Office,
55, Market Street, Manchester,
Agent for the Applicant.