Improvements connected with the Manufacture of Illuminating Gas from Coal.
Year: 1889

page_text: Date of Application, 10th July, 1889
Complete Specification Left, 10th Apr., 1890-Accepted, 17th May, 1890
PROVISIONAL SPECIFICATION.
Improvements connected with the Manufacture of Illuminating Gas
from Coal.
I, ISAAC CARR, of 72 Albert Road Widnes, in the County of Lancaster Engineer,
do hereby declare the nature of my said Invention to be as follows:-
This my invention is for an improved form of plant or apparatus for carrying out
the process set forth in the Specifications of Letters Patents granted to John Henry
Richardson Dinsmore connected with the manufacture of gas from coal, namely
Nos. 176787-771487-1585287-209688-488588
This invention has for its object an improved form of apparatus whereby the gases.
from the coals in 2, 4, 6 or 8, or other number of ordinary retorts may be conveyed
immediately and direct to the heated duct of said retort specified in said Specification
of Dinsmore before the tarry matters in suspension in the gas have time to condense
to liquid, the result being that the combined gases so conveyed yield a greater
illuminating power and an increased volume.
I employ pipes which connect the retorts with a common pipe which is connected
with the duct below the mouth or below and above as the case may be. Each separate
connecting pipe is provided with a cock or valve thereon by which communication
between the retort and the duct can be made or broken. When communication is
broken the gas from the retorts when in work travels up the ordinary ascension pipe
into the hydraulic or equivalent main in the usual way.
The connecting pipes and valves may be fixed in either a vertical inclined or
horizontal position, but preferably in an inclined position, and are fitted with doors
and caps from which any deposit can be easily and quickly removed. The lengths
of connections being very short and straight, also admits of easy cleaning from the
end when the retort mouthpiece door is open.
The cocks or valves in the connecting pipes between the retort and duct, may be of
any suitable known kind, by which communication by way of these connecting pipes
with the duct can be positively cut off, such as by the ordinary plug cock.
170
1093
53331 33
ISAAC CARR.
By Cheesbrough & Royston,
Liverpool, Patent Agents.
ISAAC CARR.
By Cheesbrough & Royston,
Liverpool, Patent Agents.
COMPLETE SPECIFICATION.
Improvements connected with the Manufacture of Illuminating Gas
from Coal.
I, ISAAC CARR, of 72, Albert Road, Widnes, in the County of Lancaster; Engineer,
do hereby declare the nature of this Invention and in what manner the same is
to be performed, to be particularly described and ascertained in and by the following
statement:-
This Invention is for an improved form of plant or apparatus for carrying out the
process set forth in the Specifications of Letters Patents granted to John Henry
Richardson Dinsmore connected with the manufacture of gas from coal, namely,
Nos. 7;714 of 1887, 4,885 of 1888, and 10,488 of 1889.
This Invention has for its object an improved form of apparatus, whereby the gases
produced from coal in 2, 4, 6 or 8, or other number, of ordinary retorts, may be
conveyed immediately and direct to the heated duct employed in such bench of
retorts specified in said Specifications of Dinsmore, before the tarry matters in
suspension in the gas have time to condense to the liquid form, the result being that
Din 877

page_text: the combined gases so conveyed yield a greater illuminating power and an increased
volume.
According to this invention, I employ pipes which connect the retorts with a
common pipe or chamber which is connected with the duct below the mouth, or
below and above, as the case may be. Each separate connecting pipe is provided
with a cock or valve thereon, by which communication between the retort and the
duct can be made or broken. When communication is broken the gas from the
retorts, when in work, travels up the ordinary ascension pipe into the hydraulic or
equivalent main in the usual way.
The connecting pipes and valves may be fixed in either a vertical, inclined, or
horizontal position, but preferably in an inclined position, and are fitted with doors
and caps from which any deposit can be easily and quickly removed. The lengths
of connections being very short and straight, also admit of easy cleaning from their
ends when the retort mouthpiece door open.
The cocks or valves in the connecting pipes between the retorts and duct, may be
of any suitable known kind, by which communication, by way of these connecting
pipes with the duct can be positively cut off, such as by the ordinary plug cock.
To illustrate and render clear the exact nature of my Invention, I have hereto
annexed a sheet of drawings showing an arrangement of apparatus designed in
accordance with the Improvements above specified. In the. Figures, the same letters
of reference are used to denote the same parts wherever they occur.
In the Drawings,
Figure 1 is an end elevation of the arrangement of apparatus ; and
Figure 2 is longitudinal section of same, illustrating the construction of the
improvements.
Referring now to the Drawings, A designates the ordinary retorts set in a bench B
in the usual way; Care ordinary ascension pipes which form communication between
the retorts and the hydraulic main K; D is the "duct" through which the gases,
distilled in the retorts A, are caused to pass, and wherein they are heated; E is the
vertically disposed chamber or pipe to which the gases from the retorts pass on their
way to the duct D; G are the pipes which connect the retorts with the chamber or
pipe E and H are the valves on such connecting pipes by which communication
between the retorts, and the chamber and duct, E and D, is controlled.
;
The connecting pipes are arranged at an inclination to the horizontal plane, with
the object, chiefly, of causing any small quantity of liquid matters which might result
from the condensation of vapour within them, to pass away from them into the mouths
of the retorts A, so preventing their becoming blocked.
The form of the chamber E is in this arrangement rectangular and is in two
portions, one above and one below the mouth of the duct D. A door or cap el is
provided on the upper end of the chamber, by the removal of which access is had,
at once, to the lower as well as the upper portion of such chamber, for the purpose
of inspecting, scraping, or cleaning it, or other object. Other doors or caps e² are
provided on the front of the chamber for the same purposes.
"
دو
By this arrangement and construction of connecting pipes G, and chamber E, a
'straight-way connection between the retorts mouths and the chamber E is
provided, and so facilities are afforded for scraping and keeping clean all the pipes
and other internal surfaces; that is to say, the connecting pipes G and the aperture
of the plug valves H can be readily scraped and cleaned from the retort mouths,
and all scale, and other removed matters are easily and quickly withdrawn.
It is to be understood that the gas is cooled on leaving the duct D as in the
ordinary Dinsmore process.
In operation the retorts A are charged seriatim, and assuming all to be employed,
the valves H are all open, and the heavy liquid seal on the dip pipes in the hydraulic
main K causes the gas to flow directly, by way of the connecting pipes G, and
vertical chamber or pipe E, into the duct D; and thus by reason of the small length
of time taken by the gas in its flow between leaving the retorts, and entering the
duct D, and coming under the influence of the heat thereof, and the small extent.

page_text: of cooling surface of the pipes and passages under the action of which it has to come
before entering the duct, practically no liquefaction of condensable vapours in the gas
takes place during such flow. Then as soon as the gas comes under the action of
the heat of the duct, the tarry vapours are heated and rendered, to a great extent, a
permanent or fixed gas.
When it is required to open the duct for inspection or other purpose, the valves H
are closed, the gas thereby being caused to flow up the ascension. pipes C to the
hydraulic main K. Each of the valves H of course comes separately into action at
the time of charging. Before opening the retort door, the valve H of the connecting
pipe of that retort, is closed, to prevent the back flow of gas produced in the other
retorts, from the chamber E, and opened when the retort is closed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is :-
1. In apparatus for making gas, in which such gas is heated in a duct, such as D,
subsequently to distillation, for the purposes specified, the arrangement and com-
bination of retorts A, connecting pipes G, valves H, vertical chamber or pipe E, and
heating duct D, as and for the purposes set forth.
2. In apparatus for making gas, in which such gas is heated in a duct, such as D,
subsequently to distillation, for the purposes specified, the combination of retorts A,
connecting pipes G, valves H, chamber or pipe E, heating duct D, and ascension
pipes C, arranged and adapted to operate, as and for the purposes set forth.
Dated this 9th day of April 1890
CHEESBROUGH & ROYSTON,
15, Water Street, Liverpool, Agents for the Applicant.