Improvements in Portable Waterbottles for Military and other Purposes.
Year: 1896

page_text: Date of Application, 8th Apr., 1896
Complete Specification Left, 8th Jan.. 1857-Accepted, 13th Feb., 1897
PROVISIONAL SPECIFICATION.
Improvements in Portable Waterbottles for Military and other
Purposes.
A communication to me from PATRICK LEWIS, of Quebec, in the Dominion of
Canada.
1, THOMAS HENRY COTHILL, of Ashmore House, Leave's Green, Keston, in the
County of Kent, Gentleman, do hereby declare the nature of this invention to be as
follows:
The present invention relates more especially to portable waterbottles for military
purposes, or for use by sportsmen, travellers, and others, and it has for its object a
novel method of construction by which a suitable filter is connected and combined
with the bottle, in such manner that where it is necessary to fill the bottle with water
containing impurities or dirt, such water is automatically filtered as it is withdrawn
from the bottle.
In order to put the invention in operation, I take a waterbottle of the kind ordinarily
used for military purposes, that is to say a flattened sheet metal bottle of such
shape and thickness that it is easily carried and used by the soldier or other person.
It is preferably made of sheet metal, enamelled inside, or both inside and outside,
for the sake of cleanliness, provided with loops or attachments for straps or other
fastenings by which it is suspended to the waistbelt or other part of the equipment,
and also preferably covered with cloth, felt, or other like covering.
I make the neck of the bottle of considerable diameter, and I make an internal
screw thread in it, into which can be screwed a stopper having a short external tube
or spout and means by which the stopper can be readily screwed in or out of the
neck of the bottle, a washer of leather or other suitable soft substance being preferably
used to make a water-tight joint.
The part of the stopper which screws into the bottle consists of a hollow ring, the
inner side of which is also screwed to receive a ring of metal having an external
thread and having attached to its lower edge a cylinder or reservoir closed below
and formed of wire gauze or finely perforated metal, preferably aluminium. This
reservoir is filled with a suitable filtering medium, such as powdered charcoal-or
even sand if nothing better can be obtained,-and it is then screwed into the lower
side of the stopper, into the recess in the bottom of which are fitted one or more
discs of wire gauze or perforated metal, by which the filtering medium is retained in
the reservoir.
The external spout is provided with a stop-cock, or with a wooden or other
movable plug (attached to a string or chain), and at a convenient part of the bottle
is a small air hole, closed by a screw plug, so that by partly unscrewing the latter air
can enter and allow the filtered water to escape or be poured out through the spout,
though sufficient may be sucked out into the drinker's mouth, if desired, without opening
the air vent. The combined waterbottle and filter described, may be made of any
suitable materials, as for instance when great lightness is necessary, of aluminium.
I do not confine myself to the precise details of shape and construction of the various
parts which may be varied more or less to suit different circumstances.
Dated this 8th day of April 1896
EDWARDS & Co.,
65 and 66, Chancery Lane, London, Agents for the Applicant.

page_text: A311 1AIN DE BOITICATION.
improvements in Portable Waterbottles for Military and other
Purposes.
A communication to me from PATRICK LEWIS, of Quebec, in the Dominion of
Canada.
I, THOMAS HENRY COTHILL, of Ashmore House, Leave's Green, Keston, in the
County of Kent, Gentleman, 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, and accompanying drawing, that is
to say-
This invention relates to portable waterbottles, more especially for military purposes,
or for use by sportsmen, travellers, and others, and it has for its object a novel
method of construction by which a suitable filter is connected and combined with the
bottle, in such manner that where it is necessary to fill the bottle with water
containing impurities or dirt, the water is automatically filtered as it is withdrawn
from the bottle.
In the accompanying drawing Figure 1 is a side view; Figure 2 an end view;
Figure 3 a longitudinal section; and Figure 4 a transverse horizontal section from
below.
In order to put the invention in operation, I take a waterbottle a of the kind
ordinarily used for military purposes, that is to say, a flattened sheet metal bottle of
such shape and thickness that it is easily carried and used by a soldier or other person.
It is preferably made of sheet metal, such for instance as steel, which may be
enamelled inside, or both inside and outside, for the sake of cleanliness, and provided
with loops or attachments b for straps or other fastenings by which it is suspended
to the waistbelt or other part of the equipment, and it is preferably covered with cloth,
felt, or other like covering.
I make the neck c of the bottle of considerable diameter, and having an internal
screw thread in it, at d, into which can be screwed a stopper e having a short external
tube or spout f, and wings or means by which the stopper can be readily screwed in
or out of the neck of the bottle, a washer g, of leather or other suitable soft
substance, being preferably used to make a water-tight joint.
The part of the stopper which screws into the bottle consists of a hollow
ring d, the inner side of which is also screwed to receive a ring of metal h
having an external thread, and having attached to its lower edge a cylinder
or reservoir i closed below and formed of wire gauze or finely perforated metal,
preferably aluminium. This reservoir is filled with a suitable filtering medium k,
such as powdered charcoal-or even sand if nothing better can be obtained, and
it is then screwed into the lower side of the stopper e, into the recess in the bottom
of which are fitted one or more discs of wire gauze or perforated metal, by which the
filtering medium is retained in the reservoir.
The external spout is provided with a stop-cock, or with a wooden or other
moveable plug (attached to a string or chain), and at a convenient part of the
bottle is a small air hole, closed by a screw plug m, cut away at one side, so that by
partly unscrewing the latter air can enter and allow the filtered water to escape or be
poured out through the spout, though sufficient may be sucked out into the drinker's
mouth, if desired, without opening the air vent m. The combined waterbottle and
filter described may be made of any suitable materials, for instance when great
lightness is necessary, of aluminium.
By the improved method of construction and arrangement described, the parts are
very quickly cleaned and kept clean; the whole of the water can be readily with-
drawn, the filter being close under the neck; the air valve allows water to be drawn

page_text: off as desired; whilst there are no projections or protuberances on the bottle likely
to be broken or torn off, and there is no india-rubber tube or connection, which is
always difficult to keep clean.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination with the waterbottle a, of the filter i attached to the stopper e
of the bottle, which stopper is provided with a discharge spout f, as described and
shown.
2. The combination of the bottle a, screwed stopper e, having discharge spont f,
perforated filter i, attached to the stopper e, filtering material k, and adjustable air
valve m, substantially as described and shown.
· EDWARDS & Co.,
65 and 66, Chancery Lane, London, Agents for the Applicant.