Year: 1887

page_text: Date of Application, 15th Apr., 1887
Complete Left, 14th Jan., 1888
Complete Accepted, 24th Feb., 1888
I ANTHONY HARRIS of Commercial Street Middlesbro in the county of York
Engineer, do hereby declare the nature of this invention to be as follows:-
-;
Whereas Gas Producers which are constructed with solid hearths and tuyers for
the admission of air or steam or air and steam from below are usually arranged with
a bridge over the tuyer and two doors either opposite to or alongside of the said
bridge. The result is that in actual work when cleaning operations are being carried
on and the clinker removed the bridge is liable to be damaged or knocked down.
Now in order to avoid any such trouble I employ three doors (or more if desired)
and arrange them by preference equidistant, then from the walls of the producer
between the doors I carry up an arch or bridge which forms a second bottom for the
producer, allowing a free passage for the air steam or air and steam to pass up where
the doors are and giving a solid back of brickwork for the poking bar to strike
against when in use.
Thus the doors are kept comparatively cool and the bridge itself forms a good
substantial mass of brickwork not liable to be damaged during cleaning.
When desired, and the nature of the fuel is suitable I employ in combination with
the above described arrangement a moveable grate or row of bars opposite each door
and hinged by any convenient arrangement to the bridge (preferably on the under-
side) the opposite ends being supported when the doors are closed and the producer
is at work but allowed to fall when the doors are opened for cleaning.
Thus the fuel may be held up from the doors and the blast admission tuyer during
action but the ashes, clinker &c. may be shot out when the doors are opened and
cleaning commenced.
A. H. REED,
Agent.

page_text: I ANTHONY HARRIS of Commercial Street Middlesbro in the county of Yorkshire
Engineer, do hereby declare the nature of this invention and in what manner the same
is to he performed, to be particularly described and ascertained in and by the following
statement:
Gas Producers which are constructed with solid hearths and tuyers for the admission
of air, or steam or air and steam from below are usually arranged with a bridge over
the tuyer and two doors either opposite to or alongside of the said bridge. The result
is that in actual work when cleaning operations are being carried on and the clinker
removed the bridge is liable to be damaged or knocked down.
In order to avoid any such trouble I employ three doors (or more if desired) and
arrange them by preference equidistant, and from the walls of the producer, between
the doors I carry up an arch or bridge which forms a second bottom for the producer,
allowing a free passage for the air, steam or air and steam to pass up where the doors
are placed and giving a solid back of brickwork for the poking bar to strike against
when in use. If desired, and the nature of the fuel is suitable I employ a moveable
grate or row of hinged bars opposite each door in combination with the arrangement
above described.
Referring now to the accompanying drawing in which similar letters refer to similar
parts throughout: Figure 1 is an elevation in section of the producer without any
moveable grate and Figure 2 is a sectional plan of same. Figure 3 shows a sectional
elevation of a similar Producer fitted with a moveable grate or fire bars and Figure 4
is a plan of same.
The general arrangement of the Producer is similar to that of other Producers of
its class.
The chamber in which the combustion or distillation takes place is represented by
the letter A and the hopper for feeding in the fuel by B, the doors C are used for
cleaning. G is the steam jet opirated by the hand wheel G¹ by the action of which
air is carried down the blow pipe H and so through the flue F and passage E to the
underside of the bridge D and thence up in front of the doors C to the chamber A.
The gaseous products pass away from the producer by the pipe or flue I through the
regulating valve J, in the usual manner. The holes K are arranged for poking or
they together with the holes L may be used for examining the state of the producer
while in action, M is a cleaning flue.
The shell of the Producer is shown in the drawings to be of iron plates lined with
firebricks in the usual way.
The feature of my invention is the arrangement of doors C and bridge D: in the
drawings three doors are shown spaced equidistant, so that when cleaning operations
are being carried on the poking bar has a solid mass of brickwork at the far side of
the producer to strike against and is not liable to damage the inlet passage E or the
bridge (which may be carried on suitable iron supports) and which forms the real

page_text: bottom of the chamber A. The air, steam, or air and steam in passing up from E to
A is carried inside of and in front of the doors C and by striking against them keeps
them cool. In combination with the arrangement of doors and bridge above described
sets of firebars shown in figures 3 and and lettered N may be employed when the
nature of the fuel is suitable one end of these bars may be hinged to the bridge at O
and the other end rest on the bar P as shown. The bar P may be arranged to drop
when the doors are open and so shoot out the ashes and clinker or it may be knocked
down afterwards and the firebars N may be arranged to rest upon the bar O instead of
being hinged upon it, and may be entirely removed during cleansing. Thus the fuel
may be held up entirely clear of the doors as well as of the blast admission tuyer E
when the producer is in action. A stand pipe Q may be employed by means of which
the producer may be kept alight for any length of time after the valve J is closed by
slightly opening the small valve R. And by it the activity of the action of the
producer in generating gas may be judged.
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:
1. The employment of cleansing doors and bridge substantially as described and
shown and for the purposes set forth.
2. In combination with the arrangement of doors and bridge the use of sets of
firebars substantially as set forth.