Improvements relating to "Gas Fires."
Year: 1890

page_text: Date of Application, 18th June, 1890
Complete Specification Left, 18th Mar., 1891-Accepted, 6th June, 1891
PROVIDIUNAL DE MUIFICATION.
Improvements relating to "Gas Fires."
We ROBERT WALLACE MACKINLAY and HARRY DARWIN, trading together
under the style or firm of Mackinlay Darwin and Company 110 Great Wel-
lington Street Kinuing Park Glasgow, North Britain, Gas Engineers, do hereby
declare the nature of this invention to be as follows:-
This invention relates to heating appliances which are commonly known and
described by the term "Gas Fires and has for its object to increase their general
utility:
1st. By making all the visible surfaces of the heat arresting and refracting body
thereof, of loose, self-adjusting and removeable sections and parts;
2nd. By making each of the said parts and sections capable of arresting, detaining
and refracting a larger amount of useful heat than is usually obtained from the
analogous parts of other "
gas fires."
46
In carrying out our invention we construct the heat arresting and refracting body
of our improved gas fire" of perforated metal domes, each united to-and
covering a duplicate part attached to the back or under side of it; the said back
part consisting of porcelain, nickel, mica, composite metal, or other suitable
material, and suspend these perforated domes in suitable positions for being heated
by means of lighted jets of gas into a glowing incandescent fiery mass, bearing a
resemblance to a coal or coke fire.
The methods of suspension which we employ for this purpose are various, con-
sisting of a sloping, perforated metal back frame supported against a fire brick wall
and containing holes within which we insert studs or hooks contained upon the
metal domes so that each dome may be hooked on to the sloping back frame or
removed therefrom without materially affecting the rest of the domes. The gas
jets are placed beneath and behind these domes and, when lighted, impart to the
said domes (closely impacted together) the appearance of a solid mass of fire.
We also make the said perforated domes capable of being linked together after
the manner of a chain, and suspended either upon or against a back frame as
described or laid upon the ribs of our improved supporting ("gas fire") structure.
We sometimes unite, inseparably, together a series of these perforated domes in
a row and suspend them over lighted jets of gas, either suspended in vertical rows
upon a sloping back frame, as beforenamed, or laid upon the gills of our improved
supporting (gas fire") structure, in preference to making each dome separate and
complete in itself.
We also make the said domes, whether singly or in rows, of a sufficiently strong
formation to arrest, retain and refract the heat which is imparted to them as
described, without the addition of a duplicate part, or backing.
We sometimes make the said domes, both singly and in rows, of baked
clay also.
T
1
1
1000
JOSEPH
LOCKWOOD,
263, Argyle Street, Glasgow, Agent for the Inventors.

page_text: Improvements relating to "Gas Fires."
We, ROBERT WALLACE MACKINLAY of 110 Great Wellington Street Glasgow
and HARRY DARWIN of 618 Eglinton Street Glasgow lately trading together under
the style or firm of Mackinlay, Darwin and Company at 110 Great Wellington
Street, Glasgow, North Britain, Gas Engineers, 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 relates to heating appliances which are commonly known and
described by the term
gas fires
and has for its object to increase their general
utility;
66
"
1st. By making all the visible surfaces of the heat arresting and refracting body
thereof, of loose self-adjusting and removeable sections and parts;
2nd. By making each of the said parts and sections capable of arresting,
detaining and refracting a larger amount of useful heat than is usually obtained
from the analogous portions of other "
gas fires."
In carrying out our invention we construct the heat arresting and refracting
portion of our improved "gas fire" body of perforated domes or domed sections
chiefly composed of metal, each one being united to, and covering-a duplicate
part attached to the back or underside of it; the said back part consisting of
porcelain, nickel, mica, composite metal or other suitable material, and suspend
these perforated domes in suitable positions for being heated by means of lighted
gas-jets into a glowing, incandescent fiery mass, having a resemblance to a coal or
coke fire.
The methods of suspension which we employ for this purpose are various,
consisting of a perforated back frame supported against a fire brick wall and
containing holes, eyes or pins corresponding to pins, holes, eyes or studs contained
upon or within the said domes, so that each dome may be hooked on to the back
frame or removed therefrom without materially affecting or displacing the
remainder of the domes. The gas jets are placed beneath and behind these said
domes and, when lighted, impart to them (closely impacted together) the appearance
of a solid mass of fire.
We also make the said perforated domes or domed sections capable of being
linked together after the manner of a chain and suspended, either upon or against
a back frame as described or laid upon the ribs of our improved supporting ("gas
fire") structure.
We sometimes unite, inseparably together a number of these perforated domes,
or domed sections, in a row and suspend them over lighted jets of gas; a series of
such rows of domes or domed sections being suspended either vertically or
horizontally upon a back frame, as beforenamed, or laid upon the gills or ribs of our
improved supporting ("gas fire") structure, in preference to making each dome or
section separate and complete in itself.
We also make the said perforated domes or sections, whether single or in
rows, as above described, of baked clay and their duplicate back parts of metal or
other substance.
Although we find that the domed "gas fire" sections which have duplicate back
parts united to them give us the best results of all, we occasionally make them,
whether singly or in rows, without the addition of a duplicate part or backing and
of an extra strong formation in order that they may be enabled to arrest and
refract a more limited amount of heat than those above described, but such
variations of our practice are exceptional and for special purposes.

page_text: In order that our invention may be more perfectly understood and more readily
carried into effect we have prepared the accompanying drawings, in which
Figs. 1 and 2 are perspective views of single perforated
domed sections made according to our invention.
6: gas fire". domes or
Figs. 3 to 6 are perspective views of perforated "gas fire" domes or domed
sections in single rows, vertical and horizontal, made according to our invention.
Figs. 7 and 8 are perspective views of back frames or racks for supporting our
gas fire domes.
66
"
Fig. 9 is a perspective view shewing a rack or back frame placed in its
natural position against a fire brick and supporting a single "gas fire" dome or
domed section.
Fig. 10 is a similar view to Fig 9 but having all the back frame covered with
our single perforated "gas fire" domed sections.
Fig. 11 is a similar one to Fig. 10 with the addition of a set of fire bars.
Fig. 12 is a section of Fig. 11 shewn through A, A.
In Figure 1 we have shewn a single perforated "gas fire" dome or domed section
made according to our invention, suitably for being hung upon the projecting parts
or spikes of a back frame such as those marked B, Figs. 8 to 12.
In Fig. 2 we have shewn another single, perforated, "gas fire" dome, made
according to our invention, with a projecting part c², suitably for being hooked upon
a back frame containing slots such as those marked C in Fig. 7 (or their equiva-
lents) and containing in addition to the stud 2, a slot c³ (Fig. 2) for enabling each
such single dome to be linked or hooked on to another dome in vertical, or nearly
vertical, rows..
In Fig. 3 we have shewn a string of three such single domes linked together
with hooks and eyes marked d² and d³ and in Figs. 4, 5 and 6 we have shewn rows
of our perforated "gas fire" domes with studs c² and eyes ³ for purposes of
suspension as described, either (semi) vertically or horizontally.
«
In Fig. 9 (before described) we have shewn a single perforated "gas fire" dome
hung upon a hook of the back frame as an illustration of the way in which our
improved gas fire" body is put together when composed of such single perforated
domes, each dome or section being hung similarly upon a hook, side by side and
tier above tier as shewn in Figures 10 and 11.
<
"
We sometimes turnish our gas fires, (by way of embellishment) with an
ornamental guard such as that marked D in Fig. 10, or with a set of fire bars
such as those marked E Figs. 11 and 12 and unite them to the back frame b² or b³,
Figs. 7 and 8, with brackets such as those marked e² Figs. 9 and 10 or with other
convenient and equivalent means.
In Fig. 12 we have given a section of our improved "gas fire" shewing the
perforated domes or domed sections hung upon the hooks of the back frame b² which
frame is supported (preferably by means of short pins marked ) against a fire
brick marked F (see Figs. 9, 10 and 11). We have shewn in this Figure (12) the
duplicate part or member marked c which is united with very few exceptions to
the back of each perforated "gas fire" dome or section by means of a screw, c, (or
any other suitable agent) for heat arresting purposes, and to give an appearance,
when the fire is lighted, resembling a solid mass of burning fuel; as the duplicate
back part can be seen through the perforations of the " gas fire" domes.
occasionally make these perforated
domes or sections without any
duplicate back part, (as at first described), where we find that we can effect the
arrestment of a sufficient amount of heat for a special purpose without the addition
of the duplicate, back, part. The part marked G, Fig. 12 represents a gas burner
suitably placed for lighting up the perforated domes marked 2.
66
gas fire'
We
We are aware that, previous to our invention combinations of perforated metal
claws or shanked domes enclosing lumps of baked clay and fixed immovably to a
back brick, and numerous other forms of perforated metal castings have been
employed for heat arrestment in connection with " gas fires"; it will therefore be
understood, that we do not claim such combinations broadly as our invention.

page_text: 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 :-
:―
1st. A "gas fire" composed principally of perforated domed sections constructed
and operated substantially as herein described and shewn or any mere modification
thereof and for the purposes specified :-
2nd. In a "gas fire" the combination therewith of numerous single perforated
domes or domed sections such as those marked Figs. 1, Fig. 2 and Fig. 3 constructed
and operated all substantially as herein described and shewn or any mere modifica-
tion thereof, and for the purposes specified :-
3rd. In a 66 gas fire
:-
the combination therewith of several single rows of
inseparable perforated domes or domed sections such as those marked Figs 4, 5
and 6 constructed and operated all substantially as herein described and shewn, or
any mere modification thereof, and for the purposes specified :-
4th. In a 66 gas fire
the combination therewith of perforated parts sections or
members such as those shown in Figures 1 to 12, constructed and connected to a
supporting fraine and brick back all substantially as herein described and shewn
or any mere modification thereof, and for the purposes specified.
Dated this 17th day of March 1801
JOSEPH LOCKWOOD,
263, Argyle Street, Glasgow, Agent for the Inventors.
JOSEPH
LOCKWOOD,
263, Argyle Street, Glasgow, Agent for the Inventors.