IMPROVEMENTS IN SYPHONS
Year: 1874

page_text: LETTERS PATENT to G. Gale Rew, of Plymouth, in the County o
Devon, for the Invention of "IMPROVEMENTS IN SYPHONS."
Scaled the 24th March 1874, and dated the 23rd January 1874.
PROVISIONAL SPECIFICATION left by the said G. Gale Row at the
Office of the Commissioners of Patents, with his Petition, on the
23rd January 1874.
I, G. GALE REW, of Plymouth, in the County of Devon, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN SYPHONS,"
to be as follows :--
My Invention consists of improvements in the construction of syphons,
which allow the air to be readily exhausted from the tube, and the
action of the syphon to be more regular than is the case with syphons of
ordinary construction.
I construct my improved syphon with a bent tube of copper or other
suitable material, the short end of which is inserted into the barrel from
which the spirit or other liquid is to be drawn. The other or long end
is closed by a tap so as to regulate or stop the flow of the liquid when

page_text: desired. At the highest part of this tube, that is at the top of the bend,
I fix a small pump to act as an air exhauster. This pump consists of a
vertical barrel having a valve at its lower extremity opening upwards.
Working in this barrel is another valve, also opening upwards, and
attached to a rod sliding in and guided by a gland or opening at the top
of the barrel. A small tap is inserted near the top of the barrel for the
egress of the air from the syphon.
When it is required to use my improved syphon, the short end of the
tube is inserted into the barrel from which the liquid is to be drawn, the
other end being closed by the tap to prevent the ingress of air. The
pump rod and valve are then moved up and down to exhaust the air.
The small tap in the barrel is opened, so that the air, as exhausted by the
pump, may escape. A glass is held under this tap, and the action of the
pump continued until all the air is exhausted from the syphon, and the
liquid begins to run from the pump into the glass. The small tap is
then closed and the action of the pump stopped. The syphon being now
full of liquid, the lower tap is opened and the liquid drawn off as
required.
SPECIFICATION filed in pursuance of the conditions of the Letters
Patent, and of an Order of the Lord Chancellor, by the said G. Gale
Rew in the Great Seal Patent Office on the 6th August 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, G. GALE
REW, of Plymouth, in the County of Devon, 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 seventy-four, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said G. Gale Rew, Her special
license that I, the said G. Gale Rew, my executors, administrators,
and assigns, or such others as I, the said G. Gale Rew, 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 SYPHONS,"

page_text: upon the condition (amongst others) that I, the said G. Gale Rew,
my executors or administrators, 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 G. Gale Rew, 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 :-
My Invention consists of improvements in the construction of syphons,
which allow the air to be more readily exhausted from the tube and the
action of the syphon to be more equable than is the case with syphons
of the ordinary construction.
I construct my improved syphon with a bent tube of copper or other
suitable material, the short end of which is inserted into the barrel from
which the spirit or other liquid is to be drawn. The other or long end
is closed by a tap so as to regulate or stop the flow of the liquid when
desired. At the highest part of this tube, that is at the top of the bend,
I fix a small pump to act as an air exhauster. This pump consists of a
vertical barrel having a valve at its lower extremity opening upwards.
Working in this barrel is another valve, also opening upwards, and
attached to a rod sliding in and guided by a gland or opening at the
top of the barrel. A small tap is inserted near the top of the barrel
for tho egress of the air from the syphon.
When it is required to use my improved syphon, the short end of
the tube is inserted into the barrel from which the liquid is to be
drawn, the other end being closed by the tap to prevent the ingress
of air. The pump rod and valve are then moved up and down to
exhaust the air. The small tap in the barrel is opened, so that the
air, as exhausted by the pump, may escape. A glass should then be
held under this tap, and the action of the pump continued until all
the air is exhausted from the syphon, and the liquid begins to run
from the pump into the glass. The small tap is then closed and the
action of the pump stopped. The syphon being now full of liquid, the
lower tap is opened and the liquid drawn off as required.

page_text: And in order that my Invention may be better understood and more
readily put into operation, I will now proceed to describe the Drawing
hereunto annexed, which represents a side elevation of my improved
syphon, A, B, C, D, being the bent copper tube.
A is the short end which is inserted into the barrel; B, the long
end down which the liquid flows; C is the large tap for regulating
the flow of liquid; D, the part of the tube to which the air exhauster
is attached; E is the pump barrel; F is the lower valve opening
upwards; G is the upper valve which is moved up and down with the
pump rod or spindle H; K is a small gland to keep the spindle air-
tight; L is the small tap for the escape of air during the action of the
pump.
Having now fully described and ascertained the nature of my said
Invention, and how the same is to be carried into effect, I would have
it understood that I do not claim the exclusive use of a syphon, or of
an air exhauster separately; but what I do claim and desire to secure by
the herein-before in part recited Letters Patent is, the construction and
use of an improved syphon having an air exhauster attached thereto,
as herein-before described and illustrated by the accompanying Drawing.
In witness whereof, I, the said G. Gale Rew, have hereunto set my
hand and seal, this Twenty-fifth day of July, in the year of
our Lord One thousand eight hundred and seventy-four.