IMPROVEMENTS IN PIPES FOR CONVEYING OR CONDENSING ACID GASES IN CHEMICAL OPERATIONS
Year: 1874

page_text: LETTERS PATENT to William Windle Pilkington, of St. Helen's, in
the County of Lancaster, Glass Manufacturer, for the Invention
of "IMPROVEMENTS IN PIPES FOR CONVEYING OR CONDENSING ACID GASES
IN CHEMICAL OPERATIONS."
Sealed the 25th September 1874, and dated the 17th June 1874.
.
PROVISIONAL SPECIFICATION left by the said William Windle
Pilkington at the Office of the Commissioners of Patents, with
his Petition, on the 17th June 1874.
I, WILLIAM WINDLE PILKINGTON, of St. Helen's, in the County of
Lancaster, Glass Manufacturer, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN PIPES FOR CONVEYING OR CONDENSING
ACID GASES IN CHEMICAL OPERATIONS," to be as follows:-
My Invention consists essentially in constructing of glass, preferably
of thin blown glass, tubes or other ducts for conveying acid gases from
one place to another in chemical operations, and for condensing acid
gases therein at the same time or separately by the action of the
atmosphere or cold gas on the external surfaces.

page_text: In carrying my Invention into practice I make one end of each glass
tube or duct smaller than the one to which it is connected, either by
tapering them or by the use of a socket, or I use butt and ring joints or
other known means for coupling them.
When constructed of a taper form, as first above mentioned, the
small end of one pipe enters the larger end of another so as to form a
continuous tube.
In combination with the above glass tubes I employ as supports at
the junctions, or intermittently between the junctions, wood or other
carriers.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Windle Pilkington in the Great Scal
Patent Office on the 17th December 1874..
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
WINDLE PILKINGTON, of St. Helen's, in the County of Lancaster, Glass
Manufacturer, send greeting.
-
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventeenth day of June, 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 William Windle Pilkington, Her
special license, that I, the said William Windle Pilkington, my
executors, administrators, and assigns, or such others as I, the said
William Windle Pilkington, 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 PIPES FOR CONVEYING
OR CONDENSING ACID GASES IN CHEMICAL OPERATIONS," upon the condition
(amongst others) that I, the said William Windle Pilkington, my
executors or administrators, by an instrument in writing under my,
or their, or.one of their hands and scals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the

page_text: same was to be performed, and cause the same to be filed in the Great
Scal 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 Windle Pilkington, do
hereby declare the nature of my said Invention, and in what manner
the same is to be performed, to be particularly described and ascer-
tained in and by the following statement, that is to say:-
My Invention consists essentially in constructing of- glass, preferably
of thin blown glass, tubes or other ducts for conveying acid gases from
one place to another in chemical operations, and for condensing acid
gases therein at the same time or separately by the action of the
atmosphere or cold gas on the external surfaces.
In carrying my Invention into practice I make one end of cach glass
tube or duct smaller than the one to which it is connected, either by
tapering them or by the use of a socket, or I use butt and ring joints or
other known means for coupling them.
When constructed of a taper form, as first above mentioned, the small
end of one pipe enters the larger cnd of another so as to form a con-
tinuous tube.
In combination with the above glass tubes I employ as supports at
the junctions, or intermittently between the junctions, wood or other
carriers.
When the said thin glass pipes are used for conveying acid gases long
distances I prefer to employ wood carriers placed at a short distance
apart, and in instances where such pipes are not under cover I by
preference enclose them in wooden cases.
Where condensation of the said gases is desired I place a number of
pipes in a case and cause circulation of air or cool gas around, their
outer surfaces by natural circulation, or by a chimney draught, by a fan,
or other means.
When thin glass taper tubes are used I prefer that the small end of
one should enter the large end of another for about four inches, in
pipes, say, from three to four feet long and ten inches in diameter.
Having now described the nature of my said Invention, and par-
ticularized the same in such manner that others will be enabled to carry

page_text: my improvements into effect, I would have it understood that I do not
confine myself to placing the tubes in any particular position or
direction; what I do claim is,―
1st. Constructing of glass the pipes, tubes, or ducts for conveying
or condensing acid gases in chemical operations, substantially as set 5
forth.
2nd. Supporting or carrying the said glass pipes, tubes, or ducts on
wood or like material.
In witness whereof, I, the said William Windle Pilkington, have
hereunto set my hand and seal, the Fifteenth day of December, ]
in the year of our Lord One thousand eight hundred and
seventy-four.
WILLIAM WINDLE PILKINGTON. (L.S.)
In the presence of
W. B. JOHNSON,
4, Clayton Square,
Liverpool.