Improvements in Gas Producers.
Year: 1894

page_text: Date of Application, 8th Aug., 1894
Complete Specification Left, 8th May, 1895-Accepted, 8th June, 1895
PROVISIONAL SPECIFICATION.
Improvements in Gas Producers.
I, BERNARD DAWSON, of York House, Malvern Link, in the County of
Worcester, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention has reference to an improved construction of gas producer
designed to obviate objections which have been found to exist with some forms of
gas producers heretofore in use and inter alia to cause the blast to be distributed
all round the producer, to prevent the leaving of an annular core of unconsumed
and useless fuel inside the producer or the leaving of a portion of ashes clinker and
dead fuel inside the lining of the producer which is found to occur in producers
constructed with a transverse water trough, the main object of my invention being
to ensure as far as possible that all portions of the producer when it is in use shall
be simultaneously in full operation or in other words that there shall be no parts at
any time practically inoperative.
My improved producer comprises a chamber constructed of refractory material
enclosed within a 'metal casing which may be of circular form in plan with
internally domed roof which I consider it advantageous to provide with a central
charging hopper with 'flange through which there are poking 'holes furnished with
covers, other poking holes being formed through the roof and also provided with
covers, 'these poking 'holes being of gradually increasing diameter in a downward
direction and so arranged as to enable any clinker or fuel adhering to the 'imerior
wall of the producer itself to 'be removed by means of a poking bar. There is a
central tuyere the general form of which is conical with a series of lateral outlets
for the blast arranged at different levels in such wise that the blast is distributed
practically all 'round the producer and in a more efficient manner than is usual
with producers as at 'present constructed. The hearth or bottom of the producer
is a water trough that extends to the outside of and entirely around the exterior of
the producer chamber 'excepting at that point where the 'tuyere pipe enters so that
the ashes clinker and wet refuse can be readily removed practically all round the
'circumference of 'the 'producer 'except of course at the part traversed by the tuyere
pipe. With this construction when the attendant is cleaning the producer he is
obliged to go practically all round it and 'to take 'ashes equally around its
circumference, whereas in the case of a producer in which the trough extends to
the biftside only dt certain poitits the ashes are frequently ouly removed at those
points and as the fuel 'th the producer 'is supported by the ashes the fuel falls more
at the points in 'question than 'it does at other parts of the producer and
consequently the producer is liable to work unequally so that the whole area is
not'effective.
Dh 9th J
A woust 1901

page_text: I, BERNARD DAWSON, of York House, Malvern Link, in the County of
Worcester, 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 has reference to an improved construction of gas producer
designed to obviate objections which have been found to exist with some forms of
gas producers heretofore in use. Amongst the objects in view are the making
practically effective for and the utilizing in the production of gas of the whole
interior area of the producer and also the providing effectively for the removal of
the refuse from the bottom of the producer over its whole area and practically
around its entire circumference without stopping or otherwise interfering with the
working of the producer or interrupting the continuous production of gas.
For the purposes aforesaid a central tuyere or blast pipe is provided which
supplies and distributes in a practically equal manner all round and over the
whole interior area of the producer the air necessary for the burning of the fuel
and the consequent production of gas; and to facilitate the removal of the refuse,
the hearth or bottom of the producer is made as a water trough that extends to the
outside of and entirely around the exterior of the producer chamber.
The construction of my improved producer will be readily understood from the
following description thereof reference being had to the accompanying illustrative
drawings whereof
Fig. 1 is a central vertical section of the producer on line A B of Fig. 3.
Fig. 2 is a like section in line CD of Fig. 3.
Fig. 3 is a horizontal section in line E F of Fig. 1 and
Fig. 4 is a horizontal section in line G H ef Fig. 2.
A is the producer chamber; it is here shown constructed of refractory material
enclosed within a metal casing A' and is represented as of circular form in plan
but may be of other shape. B B' is the hearth or bottom of the producer; as
will be seen it is a water trough and extends to the outside of and entirely around
the exterior of the producer chamber CC being a number of openings in the
bottom of the wall of the producer chamber which establish communication
between the inner or circular portion B and the outer or annular portion B' of the
said bottom.
The refuse can be taken out at these openings whilst the producer is working,
and being placed all round its periphery, it can be removed equally at each
opening, thereby in conjunction with the central tuyere rendering absolutely
effective the whole interior area and insuring constant and regular working of the
producer. D is the central tuyere with conical top D' and outlets D which
constitute practically an annular outlet for the blast; D³ is the throat or blast
pipe and D the tuyere pipe that connects the central tuyere to the throat pipe
and may be cast in one with the tuyere.
The throat or blast pipe can be placed entirely outside of the circular water
trough if local circumstances permit, and arrangements most suitable to individual
circumstances may be made for taking away any small quantity of water that may
result from condensation of steam in pipe D.
I have shewn the producer chamber constructed with an internally doned
roof E which I consider it advantageous to provide (as shewn) with a central
charging hopper F with flange F through which there are poking holes G
furnished with covers G'. H H are other poking holes formed through the roof,
of gradually increasing diameter in a downward direction and so arranged as

page_text: to enable any clinker or fuel adhering to the interior wall of the producer
itself to be removed by means of a poking bar. H'H' are the covers of the
poking holes H.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
1. A gas producer constructed with a water trough bottom that extends to the
outside of and entirely around the exterior of the producer chamber the arrange-
ment being such that ashes, clinker and wet refuse can be readily removed from
the entire area of the producer bottom and around its circumference substantially
as described.
2. In a gas producer the combination of a producer chamber with a water
trough bottom extending beyond and around the exterior of the said chamber and
a central tuyere adapted to distribute the blast practically all round within the
producer substantially as described.
3. My improved gas producer as described and shewn.
Dated this 7th day of May 1895.
For the Applicant,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.
For the Applicant,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.