IMPROVEMENTS IN ASCENSION PIPES USED IN THE MANUFACTURE OF GAS to be as follows:
Year: 1885

page_text: I, CHARLES HUNT of the Corporation Gas Works, Windsor Street Birmingham,
in the County of Warwick, Civil Engineer do hereby declare the nature of my said
invention for "IMPROVEMENTS IN ASCENSION PIPES USED IN THE MANUFACTURE
OF GAS to be as follows:-
"
This invention has for its object the construction of the lower part of ascension
pipes in such a manner as to reduce the liability, if not entirely prevent the
deposition of carbonaceous matter, or accumulation of thick tar or pitch within.
them, and so avoid the troubles of what is commonly known as "stopped pipes."
The invention consists in making the lower part of the ascension pipes double,
that is to say, either by casting or otherwise placing a jacket or pipe of larger
diameter around the interior one, provided with suitable distance pieces or studs
so as to leave an annular space between them, closed at the bottom, but either open
or closed at the top. This space is occupied by a constant stream of water, cold
water being admitted by a suitable inlet near the bottom, and the water that
becomes heated being led off by a suitable outlet near the top. The bottoms of
these combined pipes may be so constructed as to fit into the ordinary socket of
the retort mouthpiece, or they may be flanged for bolting on to the mouthpiece.
The upper part of these jacketted pipes may be also formed with a socket or
flange to suit the particular case.
A modification of the above consists in placing within an external pipe closed at
bottom and either open or closed at top a number of tubes for the gas to pass
through from the retort to the upper part of the ascension pipe, being served with
a circulating stream of water as in the foregoing.
By the use of such pipes the temperature of the gas issuing from the retorts may
be suitably reduced and the prevention of stoppage ensured.
W. H. BENNETT,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION,
Improvements in Ascension Pipes Used in the Manufacture
of Gas.
I, CHARLES HUNT of the Corporation Gas Works, Windsor Street, Birmingham,
in the County of Warwick, Civil Engineer, do hereby declare the nature of my
invention for "IMPROVEMENTS IN ASCENSION PIPES USED IN THE MANUFACTURE
OF GAS " and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement, reference being had
to the accompanying drawings, and to the letters and figures marked thereon, that
is to say
This invention has for its object the construction of the lower part of ascension
pipes in such a manner as to reduce the liability, if not entirely prevent the
deposition of carbonaceous matter, or accumulation of thick tar or pitch within
them, and so avoid the troubles of what is commonly known as "stopped pipes."
In order that the invention may be easily understood drawings are attached
hereto, Fig. 1 being a vertical section of a straight ascension pipe, jacket and
mouthpiece, and Fig. 2 a similar view of a curved ascension pipe suited to the
side retorts of a Betting.
The invention consists in making the lower part of the ascension pipes A double,
that is to say, either by casting or otherwise placing a jacket or pipe B, of larger
diameter around the interior one (which may be provided with suitable distance
pieces or studs, or not,) so as to leave an annular space between them, closed at
the bottom, but either open or closed at the top. This space is occupied by a
constant stream of water, cold water being admitted by a suitable inlet C near the
bottom, and the water that becomes heated being led off by a suitable outlet D
near the top. The bottom of these combined pipes may be so constructed as to fit
into the ordinary, or somewhat enlarged socket E of the retort mouthpiece F, or
they may be flanged for bolting on to the mouthpiece. The upper part of these
jacketted pipes may be also formed with a socket G or flange to suit the particular
саве.-
-The invention may be applied to all the usual forms of gas retort mouth-
pieces.
When the ascension pipe and jacket are made separately the space between the
two at the lower part H is caulked, a fillet J being cast on to the ascension pipe
or jacket to prevent the caulking material from entering too far, and to afford
resistance when caulking. When caulked the combined ascension pipe and jacket
may be slipped into the socket E, and the joint made as usual.
A modification of the above consists in placing within an external pipe closed at
bottom and either open or closed at top, a number of tubes for the gas to pass
through from the retort to the upper part of the ascension pipe, being served with
a circulating stream of water as in the foregoing.

page_text: By the use of such pipes the temperature of the gas issuing from the retorts may
be suitably reduced and the prevention of stoppages ensured.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is,
The construction of ascension pipes, each having a jacket with water inlet and
outlet, the whole being arranged as herein described and shown on the drawings,