IMPROVEMENTS' IN THE CONSTRUCTION AND ARRANGEMENT OF VESSELS EMPLOYED IN THE MANUFACTURE OF NITROUS OXIDE GAS, AND FOR OTHER SIMILAR PURPOSES."
Year: 1870

page_text: LETTERS PATENT to Henry Blandy, of the Town and County of the
Town of Nottingham, Dental Surgeon to the Free Dental Dis-
pensary, Nottingham, and also Dental Surgeon to the Nottingham
Midland Eye Infirmary, of the same Place, for the Invention of
"IMPROVEMENTS' IN
THE CONSTRUCTION AND ARRANGEMENT OF VESSELS
EMPLOYED IN THE MANUFACTURE OF NITROUS OXIDE GAS, AND FOR OTHER
SIMILAR PURPOSES.""
Sealed the 25th November 1870; and dated the 27th May 1870.
PROVISIONAL SPECIFICATION left by the said Henry Blandy at the
Office of the Commissioners of Patents, with his Petition, on the
27th May 1870.
I, HENRY BLANDY, of the Town and County of the Town of
5 Nottingham, Dental Surgeon to the Free Dental Dispensary, Notting-
ham, and also Dental Surgeon to the Nottingham Midland. Eye
Infirmary, of the same Place, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE CONSTRUCTION AND ARRANGEMENT OF
VESSELS EMPLOYED IN THE MANUFACTURE OF NITROUS OXIDE GAS AND FOR OTHER
SIMILAR PURPOSES," to be as follows:-

page_text: My Invention has for its object the construction and arrangement of
vessels employed especially in the manufacture of nitrous oxide of gas,
and for other similar purposes.. These improved vessels are so con-
structed and arranged that they are effective in preventing the evils and
waste arising from the escape of gas, the corroding of corks, and the
necessity of applying of plaster of Paris or equivalent materials as now
required.
The vessels are made by preference of the well-known Wedgewood
mortar material, a ware which will effectually resist acids, and they are
glazed inside and outside for extra security.
In carrying out my Invention I employ in my first vessel two short
tubes baked into the vessel, and I also employ two other tubes, one of
greater length than the other. I form a bung hole near the bottom of
the vessel to admit and discharge the liquid without disturbing the
connections. There is a spile hole at the top of the vessel to let out bad
gas or to admit air or other fluid into the retort when cooling.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henry Blandy in the Great Seal Patent Office on
the 25th November 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
BLANDY, of the Town and County of the Town of Nottingham, Dental
Surgeon to the Free Dental Dispensary, Nottingham, and also Dental
Surgeon to the Nottingham Midland Eye Infirmary, of the same Place,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-seventh day of May, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-third
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Henry Blandy, Her special licence that I, the
said Henry Blandy, my executors, administrators, and assigns, or such
others as I, the said Henry Blandy, 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

page_text: United Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for "IMPROVEMENTS IN THE CONSTRUCTION
AND ARRANGEMENT OF VESSELS EMPLOYED IN THE MANUFACTURE OF NITROUS OXIDE
GAS, AND FOR OTHER SIMILAR PURPOSES," upon the condition (amongst others)
that I, the said Henry Blandy, 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 Henry Blandy, 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, reference being had to the accom-
panying Drawings and to the letters and figures marked thereon, that
is to say:
My Invention has for its object improvements in the construction and
arrangement of vessels employed especially in the manufacture of
nitrous oxide gas, and for other similar purposes. My improved vessels
are so constructed and arranged that from their adaptability and extreme
simplicity they are most effective in preventing the evils and waste
arising from the escaping gas, the corroding of corks, and the neces-
sity of applying plaster of Paris, or its equivalent material, as now
required.
The vessels are made by preference of the well-known Wedgwood
mortar material, a ware which will effectually resist acids, and they are
glazed inside and outside to afford extra security.
In carrying out my Invention I employ in my first vessel two short
tubes which are baked into the vessel, and I also employ two other
tubes, one tube being of greater length than the other. I also form a
bung hole near the bottom of the vessel to admit and discharge the
liquid without disturbing the connections employed. There is a spile
hole at the top of the vessel to let out bad gas or to admit air or other
fluid into the retort when cooling.
Having thus set forth the nature of my said Invention, I now
proceed more fully to describe the manner of performing the same,
with reference to the accompanying Drawings.

page_text: DESCRIPTION OF THE DRAWINGS.
Figure 1 shews a side view of one of my wash bottles or vessels with
india-rubber tubes attached, which assist in forming the connections
between the generating flask and the wash bottle and receiver.
A is the generating flask; B, the tube connecting the flask with the
wash bottle; C and D are the tubes which connect the wash bottle with
the receiver or otherwise. These bottles have two short tubes B' and B*
at the top thereof, or one long and one short tube. Each bottle has
also a bung hole B³ near the bottom for drawing off or pouring in liquid
without disturbing the connections. B' is a spile hole at the top of each
vessel to let out bad gas or to let in air or other fluid to fill up the
vacuum which may be caused by diverting the heat from the flask when
heat is employed.
Figure 2 is a sectional view of a wash bottle or vessel having a long
and a short tube B' and B* and a spile hole B' at the top and a bung
hole B³ at the bottom.
These wash bottles or vessels are made by preference of the same
material as the well-known Wedgwood mortar material, and are glazed
both inside and outside. They effectually resist acids, prevent the
cscape and consequent waste of gas, and the corroding of corks, and they
also obviate the necessity of employing a series of applications of plaster
of Paris, or its equivalent, for luting the connections.
Having now described the nature of the said Invention, and in
what manner the same may be performed, I declare that I claim,
arranging and constructing vessels with tubes and holes substantially as
described.
In witness whereof, I, the said Henry Blandy, have hereunto set
my hand and seal, this Twenty-fourth day of November, in the
year of our Lord One thousand eight hundred and seventy.
Witness,
GEO. JON. ROBINSON,
Patent Office,
Nottingham.
HENRY BLANDY. (L.S.)