IMPROVEMENTS IN APPARATUS FOR FILTERING VOLATILE LIQUIDS
Year: 1854

page_text: LETTERS PATENT to Thomas Robinson, of 5, Farringdon Street, for the
Invention of "IMPROVEMENTS IN APPARATUS FOR FILTERING VOLATILE
LIQUIDS."
Sealed the 25th March 1854, and dated the 23rd January 1854.
PROVISIONAL SPECIFICATION left by the said Thomas Robinson at the
Office of the Commissioners of Patents, with his Petition, on the 23rd
January 1854.
I, THOMAS ROBINSON, of 5, Farringdon Street, do hereby declare the nature
of my said Invention for "IMPROVEMENTS IN APPARATUS FOR FILTERING VOLATILE
LIQUIDS" to be as follows:-
The object of this Invention is to arrange the apparatus used for filtering
volatile liquids in a peculiar manner, with a view to prevent waste, when
filtering such liquids through filtering paper. For this purpose a funnel
shaped vessel formed of glass, earthenware, or metal is used, having a cap or
cover which fits fluid-tight, so as to admit of the filtering paper being intro-
duced. The upper part of the cap is formed with an opening through which
the liquid to be filtered is poured, and such opening is stopped by means of a
stopper fixed to the end of a flexible tube, such flexible tube having another
stopper fixed to its other end, which enters and stops an opening in a lower
vessel or receiver. The lower end of the funnel shaped vessel enters an
opening in the receiving vessel and closes it air-tight. The liquid is drawn off
from the receiving vessel by a cock or tap.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Robinson in the Great Seal Patent Office on the
22nd July 1854.
'
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
ROBINSON, of 5, Farringdon Street, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of January, in the year of our Lord
One thousand eight hundred and fifty-four, in the seventeenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Thomas Robinson, Her special licence that I, the said Thomas Robinson,
my executors, administrators, and assigns, or such others as I, the said Thomas
Robinson, 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 APPARATUS
FOR FILTERING VOLATILE LIQUIDS," upon the condition (amongst others) that I,
the said Thomas Robinson, by an instrument in writing under my hand and
seal, should particularly describe and ascertain the nature of the said Inven-
tion, 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 Thomas Robinson, 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 statements
thereof (that is to say):-
1
The object of this Invention is to arrange the apparatus used for filtering
volatile liquids in a peculiar manner, with a view to prevent waste, when
filtering such liquids through filtering paper. For this purpose a. funnel
shaped vessel formed of glass, earthenware, or metal is used, having a cap or
cover which fits fluid-tight, so as to admit of the filtering paper being intro-
duced. The upper part of the cap is formed with an opening, through which
the liquid to be filtered is poured, and such opening is stopped by means of a
stopper fixed to the end of a flexible tube, such flexible tube having another
stopper fixed to its other end, which enters and stops an opening in a lower 3
vessel or receiver. The lower end of the funnel shaped vessel enters an
opening in the receiving vessel and closes it air-tight. The liquid is drawn off'
from the receiving vessel by a cock or tap.

page_text: Having thus stated the nature of my said Invention, I will proceed to
describe the manner of performing the same.
DESCRIPTION OF THE DRAWING.
The Drawing shows a section of the apparatus; a is a funnel shaped vessel,
which has a cover b, which is made to fit tight by cork, vulcanized india-
rubber, by grinding, or by other suitable means; into this funnel shaped vessel,
by reason of its having a cover, a filter of filtering paper can readily be
introduced when the cover is off. The liquid to be filtered is to be filled into
the vessel a, after introducing the filter; the cover is then to be placed in its
position as shown, and by reason of the vessel a being open to the receiving
vessel 6', by the flexible tube c, the filtering of the liquid will proceed. The
filtering vessel a, and vessel b', are capable of separating, but are connected
together by an air-tight joint, by preference of vulcanized india-rubber as
shown. The flexible tube e is connected at its ends air-tight to the vessels a
and 6. The filtered liquid is drawn off by the cock d.
Having thus described the nature of my Invention, I would have it under-
stood that I do not claim the parts separately, and they may be varied in
form; but what I claim is, the combined apparatus above described.
In witness whereof, I, the said Thomas Robinson, have hereunto set my
hand and seal, this Twenty-second day of July, in the year of our
Lord One thousand eight hundred and fifty-four.
Witness,
B. GOBEY,
12, Cursitor Street,
Chancery Lane.
THOMAS ROBINSON. (L.B.)