IMPROVEMENTS IN PORTABLE FILTERS
Year: 1868

page_text: LETTERS PATENT to William Barry Lord, of Stamford Lodge,
Hampstead Heath, in the County of Middlesex, Gentleman, for
the Invention of "IMPROVEMENTS IN PORTABLE FILTERS."
Sealed the 24th November 1868, and dated the 26th May 1868.
PROVISIONAL SPECIFICATION left by the said William Barry Lord
at the Office of the Commissioners of Patents, with his Petition,
on the 26th May 1868.
I, WILLIAM BARRY LORD, of Stamford Lodge, Hampstead Heath,
in the County of Middlesex, Gentleman, do hereby declare the nature
of the said Invention for "IMPROVEMENTS IN PORTABLE FILTERS," to be as
follows:-
This Invention relates to the arrangement and combination of filters
with pocket drinking flasks or other portable vessels or receptacles, a
flexible tube being also combined therewith for the purpose of with-
drawing the air from the flask or vessel by suction when it is placed in
the water to be filtered, such tube also acting as a syphon when a

page_text: continuous supply of filtered water or other fluid is required. The
drinking flask or other portable vessel with which the filter and syphon
tube are combined according to my Invention I prefer to form in two parts,
which are closed together by an air-tight joint, the filtering chamber and
syphon tube being applied to one of such parts, so that when separated
either or both of them may be used as drinking cups or vessels; or the
part detached from the filter if made of metal may be used as a vessel
for heating water or as a cooking utensil. The filtering chamber may be
applied to the interior or to the exterior of the flask or vessel, and may
be permanently attached thereto or be capable of being separated there-
from; sponge, fibrous, granular, or other filtering mediums are introduced
into the filtering chamber, which is closed or covered by a screw cap or
otherwise, the cap or cover, as also the surface of the flask or vessel
enclosing the filtering materials being formed with fine perforations for
the passage of the water through the filter into the body of the flask or
vessel.
Filters of this character with syphon tubes may be applied according
to my Invention to portable vessels of various kinds, such as military
drinking cups, cooking utensils or vessels ordinarily used by travellers,
soldiers, or emigrants, and the receptacles to which they are applied
may be made of metal, earthenware, leather, india-rubber, or other
suitable materials.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Barry Lord in the Great Seal Patent
Office on the 26th November 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
BARRY LORD, of Stamford Lodge, Hampstead Heath, in the County of
Middlesex, Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-sixth day of May, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
first year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said William Barry Lord, Her special
licence that I, the said William Barry Lord, my executors, adminis.
.

page_text: trators, and assigns, or such others as I, the said William Barry Lord,
my 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 Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN PORTABLE FILTERS," upon the condition (amongst
others) that I, the said William Barry Lord, my executors or adminis-
trators, by an instrument in writing under my, 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.
NOW KNOW YE that I, the said William Barry Lord, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say :-
This Invention relates to the arrangement and combination of filters
with pocket drinking flasks or other portable vessels or receptacles, a
flexible tube being also combined therewith for the purpose of with-
drawing the air from the flask or vessel by such when it is placed in
the water to be filtered, such tube also acting as a syphon when a
continuous supply of filtered water or other fluid is require.
And in order that my said Invention may be most fully understood and
readily carried into practice I will proceed to describe the Drawing
hereunto annexed, which shews several views of a drinking flask (or it
may be any other form of portable vessel) having a filter and syphon
tube combined therewith according to my Invention, and I prefer to
form the flask or vessel in two parts A and B, which are closed together
by an air-tight joint, the filtering chamber C and syphon tube D being
applied in this arrangement to the part A. When the parts A and B
are separated either or both of them may be used as drinking cups or
vessels by closing the openings to the filtering chamber C and tube D,
or the part detached from the filter when made of metal may be used
as a vessel for heating water or as a cooking utensil. The joint between
the two parts A and B when closed together is rendered air-tight by

page_text: means of cork, india-rubber, or other suitable elastic material inserted in
the end of the vessel A at a¹; or the parts A, B, may be of tubular form
and arranged to screw together with an elastic washer between the parts
where they come together to form an air-tight joint; or the parts A, B,
may be otherwise secured together to render the vessel air-tight when
closed. The filtering chamber C may be applied to the interior, as
shown, or to the exterior of a flask or vessel according to my Invention,
and may be permanently attached thereto or be capable of being
separated therefrom. Sponge, fibrous, granular, or other filtering mediums
are introduced into the filtering chamber C, which is closed or covered
by a screw cap c', or otherwise. The screw cap or cover c³, as also the
surface of the flask or vessel at a inclosing the filtering materials are
formed with fine perforations for the passage of the water through the
filter into the body of the flask or vessel.
Filters of this character with syphon tubes may also be applied
according to my Invention to portable vessels of various kinds, such as
military drinking cups, cooking utensils, or vessels ordinarily used by
travellers, soldiers, or emigrants, and the receptacles to which they are
applied may be made of metal, earthenware, leather, india-rubber, or
other suitable materials..
When filters such as previously described are applied according to my
Invention to portable vessels which are not capable of being closed air-
tight I apply the filter to the lower part of such vessels so that when
such vessels are placed in the water to be filtered it will rise up through
the filtering chamber into the vessel, and I so arrange the filtering
chamber that the passage of the water through it may be readily closed
when the vessel is full or in use for other purposes. And I would
remark that the filtering chamber may either be permanently attached
to the drinking flask or other portable vessel, or it may be so arranged as
to be capable of being applied thereto when required.
Having thus described the nature of my Invention, and the manner in
which the same is carried into practice, what I claim is the arrangement
and application of a filtering chamber or chambers C in combination
with pocket drinking flasks or other portable vessels which serve to
receive and retain the filtered water as herein described.
I also claim the application of a syphon tube D to a pocket drinking
flask or other closed or air-tight portable vessel arranged in combination

page_text: with a filtering chamber for the purpose of exhausting the air from such
closed vessel, such tube also serving to act as a syphon for conducting
the filtered water from the flask or vessel as herein described.
In witness whereof, I, the said William Barry Lord, have here-
unto set my hand and seal, this Twenty-fifth day of November,
in the year of our Lord One thousand eight hundred and sixty-
eight
W. B. LORD. (L.S.)