Improvements in Gas Generators.
Year: 1892

page_text: Date of Application, 29th Apr., 1892
Complete Specification Left, 28th Jan., 1893-Accepted, 4th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Gas Generators.
I, THOMAS DENNIS ROCK, of 62 Leadenhall Street in the City of London
Mercantile Engineer, do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to improve the construction of gas generators or
producers, and to render them more convenient and economical in operation than
heretofore.
An important feature of the invention consists in the utilization of the heat which
is usually radiated from the outside of the gas generator or producer and thereby
wasted.
In order to utilize this heat and to obtain other advantages, I wholly or
partially surround the gas producing charge with a water and steam space which
fulfils the duties of a boiler and generates steam for use in the producer itself or in
any other way that may be desirable.
The steam and water space may be formed by constructing the generator wholly
or partially with a double skin, or it may be formed by lining the generator with
tubes disposed vertically or otherwise, with or without means for examining and
cleaning the same. When tubes are used they are preferably connected to a
common chamber or receiver from which the steam may be conveniently drawn.
By this invention I effect an economy of heat and space, and in many cases I effect
an economy in the cost of the gas producing plant.
Dated this 27th day of April 1892.
A DAAT
COMPLETE SPECIFICATION.
Improvements in Gas Generators.
I, THOMAS DENNIS ROCK of 62 Leadenhall Street, in the City of London,
Mercantile 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 :-
The object of this invention is to improve the construction and increase the utility
of gas generators or producers, and to render them more convenient and self con-
tained and also more economical in operation than heretofore. "By this invention
I also effect a saving of heat which is usually wasted and a reduction in the cost of
a gas producing plant.
An important feature of my invention consists in the utilisation of the heat which
is usually radiated from the outside of the gas generator or producer and thereby
lost. In order to utilise this heat and to obtain other advantages, I surround the
gas producer, and part of the gas flue leading therefrom, with a water and steam
space which fulfils the duties of a boiler and generates steam for use in the
producer itself or elsewhere as may be desirable or convenient.
I form the steam and water space by constructing the generator with a double
shell, but tubes may be added to and connected with the steam and water space so
formed, for facilitating the circulation of the water.
In describing the manner in which I carry my invention into practice, I make
reference to the accompanying drawing which is a sectional elevation of a gas
producer constructed according to my invention.
a is an inner shell forming the body of the gas producer: it rests on a brick

page_text: lined chamber b, and communicates therewith as shown. The chamber b may have
such doors and other fittings as are required for the convenient working of the
generator. The charge is fed into the producer through the charging hopper c and
the gas fed. The gas, passes away from the producer by a gas main e. f is
an outer shell forming a steam tight joint with the body of the producer or inner
shell, and with the gas fluè d, at g and h respectively. The outer shell is of such
form and dimensions as to form a suitable water and steam spacej between the said
outer. shell and the inner shell. The outer and inner shells are both constructed'
in such a manner as to be enabled to resist such steam pressure as it is intended to
raise by the action of the waste heat passing through the sides of the inner shell,
and I may, employ such stays as may be necessary for strengthening the structure
in each case.
o is a steam pipe for carrying away the steam that is generated
in the space j. The feed water is preferably introduced at the bottom of the
water space as shown at k. Around the base of the body of the producer is
an annular air chamber l, fitted with a steam blower. m for forcing a supply. of air
and steam thereinto as may be required. The said supply of air and steam is
delivered into the interior of the producer by suitable air inlets n. The steam
blower m delivers its supply of steam from the steam pipe o.
A safety valve p, a pressure gauge r and a water gauges, are attached to the outer
.shell.
By my invention I utilise much of the heat which would otherwise be wastefully
radiated from the producer. My improved generator can be worked independently
of any external or separate steam supply, and besides generating sufficient steam
for use in the producer itself, I may generate a surplus for other useful purposes,
such, for instance, as driving feed pumps, working injectors, or furnishing blast to
other gas producers which may not be constructed according to my invention.
Further, by avoiding the necessity for a separate boiler, I effect an economy in the
first cost of the gas producing plant and in the space occupied thereby.
Having now particularly described and ascertained the nature of this my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A gas producer or generator constructed with an inner shell and an outer shell
forming a steam and water space between them for the purpose of utilising heat
derived from the decomposing charge in the generation of steam for use in the
producer or elsewhere.
Dated this 21st day of January 1893.
T. DENNIS ROCK.