A NEW OR IMPROVED APPLIANCE TO GAS RETORTS, FOR PREVENTING THE OBSTRUCTION OF THE ASCENSION PIPE
Year: 1884

page_text: I, CHARLES DENTON ABEL of N° 28 Southampton Buildings Chancery Lane in
the county of Middlesex, Consulting Engineer and Patent Agent, do hereby declare
the nature of my invention for "A NEW OR IMPROVED APPLIANCE TO GAS RETORTS,
FOR PREVENTING THE OBSTRUCTION OF THE ASCENSION PIPE" to be as follows:-
This invention relates to means for preventing the choking or obstruction of the
ascension pipe of gas retorts, such as occurs at present through the deposits of tar,
which condenses and runs down the pipe and solidifies forming, together with
particles of coal from the retort, a gradually increasing solid deposit, that frequently
more or less entirely fills up and chokes the ascension pipe, and the periodical
removal of which entails considerable loss of time and expense as also injury to the
workmen. In order to obviate theso inconveniences, there is provided, according
to the present invention, in connection with the cover or bonnet of the retort a
device, which is shewn on the accompanying drawing, in which fig. 1 shews a
section of the retort mouthpiece with the cover half open; fig 2 shews the position
of the parts with the cover closed; fig. 3 shews an inside view of the disc c,
corresponding to fig. 1, fig. 4 shows a similar view corresponding to fig. 2, and fig. 5
shows a sectional plan of the parts with the door quite open. To the cover u, is
connected a disc c by means of rods e e, hinge-jointed both at d d and at ff. The
disc c is of such a configuration as to nearly fit the sides of the retort, leaving only
a narrow interstice between the two, and when the door is closed, this disc is
situated at the inner end of the mouthpiece b, as shewn at fig. 2, so that the gas
generated in the retort must pass through the said narrow interstice before
arriving at the ascension pipe. As this disc c, being of iron and in metallic
connection with the outer cover, will be cooled to a certain extent by conduction,
the tarry vapor carried by the gas will become in great part condensed on the
inner surface thereof, and it will be still further condensed and retained by the
compression of the gas, in passing through the narrow interstice round the disc.

page_text: Thus the gas is more or less entirely freed from those tarry constituents that
usually condense in the ascension pipe, before entering the latter, and in addition,
the small particles, of coal that are usually carried along with the gas to the
ascension pipe, are also stopped at the said narrow interstice. The ascension pipe
is thus kept practically free from deposits.
By the articulated connection of the disc c to the cover a, the former will, on the
opening and closing of the cover, be made to move freely in and out of the retort
mouth, and to assume the position shewn at fig 2 when the cover is closed.
Dated this 10th day of January 1884.
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C.

page_text: COMPLETE SPECIFICATION.
•
I, CHARLES DENTON ABEL of N° 28 Southampton Buildings, Chancery Lane in
the county of Middlesex, Consulting Engineer and Patent Agent, do hereby declare
the nature of my said invention for "A NEW OR IMPROVED APPLIANCE TO GAS
RETORTS FOR PREVENTING TIE OBSTRUCTION OF THE ASCENSION PIPE" and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement:-
This invention relates to means for preventing the choking or obstruction of the
ascension pipe of gas retorts, such as occurs at present through the deposits of tar,
which condenses and runs down the pipe and solidifies forming, together with
particles of coal from the retort, a gradually increasing solid deposit that frequently
more or less entirely fills up and chokes the ascension pipe, and the periodical
removal of which entails considerable loss of time and exponse, as also injury to the
workmen. In order to obviate these inconveniences, there is provided, according
to the present invention, in connection with the cover or bonnet of the retort,
a device which is shewn on the accompany drawings, in which fig. 1 is a section
and fig 3 a front view of the retort mouth piece with the cover half open; fig. 2 is
a section and fig. 4 a front view shewing the position of the parts with the cover
closed; fig. 5 is a plan of the parts with the door, which is shown in section, quite
open. To the cover at is connected a disc e by means of rods e e hinge-jointed both
at d d and at ff. The disc c is of such a configuration as nearly to fit the retort,
leaving only a narrow interstice around its edge. When the door is closed, this
disc is situated at the inner end of the mouth piece as shown at fig. 2, so that the
gas generated in the retort must pass through the said narrow interstice before
arriving at the ascension pipe.
As the disc c, being of iron and in metallic connection with the outer cover, is
cooled to a certain extent by conduction, the tarry vapor carried by the gas
becomes in great part condensed on the inner surface thereof, and it is still further
condensed and retained by the compression of the gas in passing through the
narrow interstice round tho disc.
Thus the gas, before entering the ascension pipe, is inore or less entirely freed
from those tarry constituents that usually condense in the pipe; and, also, the small
particles of coal, that are usually carried along with the gas to the ascension pipe,
are stoppered at the narrow interstice around the disc. The ascension pipe is thus
kept practically free from deposits.
The articulated connection of the disc c to the cover a permits the disc, on
opening or closing the cover, to move freely in and out of the retort mouth, and to
assume the position shown at fig. 2 when the cover is closed.
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 -
In combination with the cover of a gas retort, a disc or plate nearly fitting tho
relort mouth, substantially as and for the purposes herein set forth.
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C.