IMPROVEMENTS IN SEAL OR DIP PIPES IN CONNECTION WITH GAS AND OTHER KETORTS.
Year: 1867

page_text: LETTERS PATENT to Henry Cockey and Francis Christopher Cockey, of
the Firm of Edward Cockey and Sons, of the Iron Works, Frome, in the
County of Somerset, Engineers, for the Invention of "IMPROVEMENTS
IN SEAL OR DIP PIPES IN CONNECTION WITH GAS AND OTHER KETORTS.
PROVISIONAL SPECIFICATION left by the said Henry Cockey and Francis
Christopher Cockey at the Office of the Commissioners of Patents, with
their Petition, on the 28th May 1867.
We, HENRY COCKEY and FRANCIS CHRISTOPHER COCKEY; of the Firm of
Edward Cockey and Sons, of the Iron Works, Frome, in the County of
Somerset, Engineers, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN SEAL OR DIP PIPES IN CONNECTION WITH GAS AND OTHER
RETORTS," to be as follows:-
This Invention relates to a peculiar construction and arrangement of what
is called the seal or dip pipe in connection with gas and other retorts, whereby
the seal pipe can be shifted or unsealed as soon as the retort is charged, so
that all pressure on the retort caused by the seal or dip of the pipe is at
once removed.
Our Invention is applicable to any shifting pipe whereby this object can be
obtained, but we prefer that the pipe be made telescopic, and raised out of the
tar or liquor in the hydraulic main by means of a lever and rod fixed in such

page_text: a manner that the man charging can as soon as he has closed the retort raise
the seal pipe out of the tar or liquor, and thus unseal it, and before opening
the retort for charging he can lower the pipe again into the tar or liquor, and
reseal it; arranged in this manner the seal pipe also acts as an expansion
sliding pipe between the retort and the hydraulic main.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Cockey and Francis Christopher Cockey in the Great
Seal Patent Office on the 21st November 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, HENRY
COCKEY and FRANCIS CHRISTOPHER COCKEY, of the Firm of Edward Cockey
and Sons, the Iron Works, Frome, in the County of Somerset, Engineers, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-eighth day of May, in the year of our
Lord One thousand eight hundred and sixty-seven, in the thirtieth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
us, the said Henry Cockey and Francis Christopher Cockey, Her special
license that we, the said Henry Cockey and Francis Christopher Cockey, our
executors, administrators, and assigns, or such others as we, the said Henry
Cockey and Francis Christopher Cockey, our executors, administrators, or
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 SEAL OR DIP PIPES IN CONNECTION WITH GAS AND OTHER
RETORTS," upon the condition (amongst others) that we, the said Heury Cockey
and Francis Christopher Cockey, our executors or administrators, by an instru-
ment in writing under hand and seal, 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 we, the said Henry Cockey and Francis Christopher
Cockey, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and ascer-
ained in and by.the following statement, reference being had to the accom-

page_text: panying Date of Drawings, and to the letters and ngures marked thereon,
that is to say-
Our said Invention relates to a peculiar construction and arrangement of
what is called the seal or dip pipe in connection with gas and other retorts,
whereby the seal pipe can be unsealed as soon as the retort is charged, so that
all pressure on the retort caused by the seal or dip of the pipe is at once
removed.
Our Invention is applicable to any shifting pipe whereby this object can be
.obtained, but we prefer that the pipe be made telescopic, and raised out of the
tar or liquor in the hydraulic main by means of a lever and rod fixed in such
a manner that the man charging can as soon as he has closed the retort raise
the seal pipe out of the tar or liquor, and thus unseal it, and before opening
the retort for charging he can lower the pipe again into the tar or liquor and
reseal it; arranged in this manner the seal pipe also acts as an expansion
sliding pipe between the retort and the hydraulic main,
And in order that our said Invention may be fully understood we shall now
proceed more particularly to describe the same, and for that purpose shall refer
to the accompanying Drawing, which represents an elevation of a seal or dip
pipe constructed according to our Invention in connection with the ordinary
hydraulic main.
A is the seal or dip pipe in connection with the ascension pipe B and with
the hydraulic main C. The lower portion a of the dip pipe, or that which
enters the hydraulic main is made to slide freely over the upper portion, such
sliding part working through a stuffing box D on the hydraulic main. The
raising or lowering of the telescopic or shifting part a of the dip pipe with
a view to the unsealing or sealing of the same as may be found desirable, may
be accomplished in various ways, but we prefer the arrangement shewn in our
Drawings, which consists of a forked rod or link E coupled to opposite edges
of the flange b of the moveable part of the dip pipe, and connected at the
upper end with one end of a lever F working on a fulcrum in a bracket G
secured to the pipe. To the opposite end of this lever there is connected the
rod H, having a handle formed at its lower end, by pulling which the attendant
can readily elevate or unseal the dip pipe as soon as the retort has been
charged and the lid screwed on, and thus take off from the retort the pressure
caused by the gas having to pass through the tar in the bydraulic main as has
heretofore been the case previous to loosening the lid of the retort; in order to
recharge the dip pipe must be lowered so as to seal it and prevent the gas
from passing back into the retort. It is obvious that the sealing and unsealing
of the dip pipe may be effected by having an opening formed on the side

page_text: thereof above the level of the tar, but inside the hydraulic main, such opening
being provided with a valve or cover in connection with a rod or other appliance
for readily opening and closing the aperture as required.
Having now described and particularly ascertained the nature of our said
Invention, and the manner in which the same is or may be used or carried
into effect, we would observe, in conclusion, that what we consider to be novel
and original, and therefore claim as the Invention secured to us by the herein-
before in part recited Letters Patent is,―
First, the constructing and arranging of the seal or dip pipes used in con-
nection with gas and other retorts in such a manner as that they may be readily
sealed before the opening of the retort, and unsealed after the retort is closed
for the purpose herein-before described.
Second, the making of the seal or dip pipes used in connection with gas and
other retorts telescopic, so as to be capable of being sealed or unsealed as
required by lowering or elevating them by a lever or otherwise, as herein-
before described.
In witness whereof we, the said Henry Cockey and Francis Christopher
Cockey, have to this our Specification set our hands and seals, this
Twenty-first day of November, One thousand eight hundred and sixty-
seven.
HENRY COCKEY.
(L.S.)
FRANCIS C. COCKEY. (L.B.)
HENRY COCKEY.
(L.S.)
FRANCIS C. COCKEY. (L.8.)