Year: 1887

page_text: We JOHN FREDERIC WRIGHT and GEORGE ERNEST WRIGHT bolh of the firm of
John. Wright & Co. of Essex Works Thimble Mill Lane Aston in the County of
Warwick, Gas Engineers do hereby declare the nature of our said 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 for its object improvements in open gas fires in which a per-
forated or porous substance is placed above the flame to collect the heat and to radiate
it into the apartment. Attempts.have been made with a similar object but they have
not been thoroughly successful.
In order that the invention may be clearly understood and easily applied we have
appended hereunto a double sheet of drawings showing one example of its application
to an open fire.
Figure,1 is a front elevation of an open fire made according to our invention.
Figure 2 is a cross sectional plan of Figure 1 on the line 5. 6.
Figure 3 is a front elevation of the vertical perforated flue or grating which forms
one of the principal details of our invention.
Figure 4 is a side, elevation of the vertical perforated flue or grating shown at
Figure 3.
Figure 5 is a front elevation of the back brick A showing its special shape with the
top flange or lip a'.
Figure 6 is a vertical section of the brick A on line 1. 2.
Figure 7 is a vertical section of the brick A on line 3. 4.
Figure 8 is a cross section of the brick A on the line 7. 8.
The outside metal casing B may be made to any shape or design and in the one
shown there is nothing new as our invention does not consist in that portion.
The perforated vertical flues or gratings E E. EE which may be made from cast
or other metal or other suitable substance Figure 1 form one of the most important
parts of our invention. There may be any number of these gratings according to
the width of the casing B. The brick or other back A is made to agree in width
with the required number of parts E and we form upon the top of these bricks the

page_text: flange or top a¹ which may be carried out even more than shown which is a novel
feature though our invention may be in some cases worked with a plain or differently
formed brick but not with such great economy, because this flange or lip arrests the
remaining heat from the gases as they pass from the perforated parts E to the escape
pipe and deflects it on to E instead of allowing the gases to pass direct to the said
pipe. We may apply bricks with the lip a¹ to ordinary gas fires with good effect and
we claim such application.
We have shown enlarged views of the perforated parts E at Figures 3 and 4 from
which their special formation will be readily understood but it is important that the
corrugated portions or hollow swells e e e should be present and we have shown the
best shape known to us but the exact outline and number of corrugations may be
varied and the amount of curve in cross section as seen at Figure 2 may also be varied
even as far as to a straight plate i.e. in horizontal section with in all cases the
perforated corrugations or swells of which there may be any convenient number.
These plates may be placed in position and secured there by means of two pins el
cast in one piece with the parts E which are also cast iron. The pins e¹ enter holes in
the brick A which are sufficiently long to allow the part E to be lifted up when the
lower end is dropped behind the front of the frame B but we do not confine
ourselves to the use of these pins as other modes of fastening them are available. The
gas burners and pipe K may be of any suitable formation such for instance as a
Bunsen burner.
We have found the parts E to work best when tapering slightly from the bottom to
the top i.e. smaller at the top than at the bottom and we prefer the varigated surface
both in regard to the configuration in general outline and also in the perforations.
The effect of the flame upon the parts E is to make them red hot by the passage of the
flames upwards. We may of course combine the several sections E into a less number
of parts or even into one piece or casting.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what we
claim is :-
First: The improvements in gas fires composed of vertical perforated corrugated
grating or flues E whether curved or flat set upon a solid brick back substantially as
herein set forth.
Second-In gas fires the improved brick or other back A having a top flange or
lip a¹ as and for the purpose herein set forth.
Dated this 29th day of September 1887.