Improvements relating to the Backs of Domestic Stoves, Kitchen Ranges, and the like,
Year: 1899

page_text: Date of Application, 27th Apr., 1899
Complete Specification Left, 18th Dec., 1899-Accepted, 20th Jan., 1900
PROVISIONAL SPECIFICATION.
Improvements relating to the Backs of Domestic Stoves, Kitchen
Ranges, and the like,
I, SAMUEL FIRTH, of 41, Linden Gardens, Notting Hill Gate, County of London,
M.Á., do hereby declare the nature of this invention to be as follows;-
-
This invention has for object, constructing or arranging the backs of domestic
and other like stoves and kitchen ranges having side boilers only that air has a
free passage thereto from the ashpit for admixture with the fuel and the products.
of combustion and thereby effect economy in the quantity of fuel used besides
ensuring a better diffusion of heat than is possible under present conditions, it
also by communication through the bottom grate prevents ashes accumulating at
the back or on the bottom grate that would interfere with the free passage of
air to the back of the fuel.
To carry my invention into practice, I cast or otherwise prepare a sloping
false back with angled back cheeks or ribs by which a free air passage is formed
from bottom to top. The false back is of bar shape and each bar solid or hollow
is provided with studs, ribs, or excresences in regular or irregular order as pro-
jections to keep the back fuel clear of the bars and so permit of air passing
through between the bars admixing with the fuel and the products of combustion
in the firebasket, the bottom grate of which has a back gap, or is so shaped that
that part is in direct line, fully or partially, with the space behind the false back.
I have referred to bars as portion of the false back but thin webs may be per-
forated or otherwise of an openworked character for the passage of air in fine
streams drawn through them by the uprising heat.
For dog stoves, the firebasket may be provided with the vertical bar and per-
forated back and the slotted bottom grate as parts thereof ready to be set in
position in the chimney opening, or of such size that it can be set in an ordinary,
coal burning fire stove to reduce its capacity and to obtain the advantages before
mentioned.
If the webs of the back be perforated or slotted for the passage of air I prefer
that such openings should be as near the bottom edge as possible for admixture
of air with the lower strata of fuel.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Samuel Firth..

page_text: Improvements relating to the Backs of Domestic Stoves, Kitchen
Ranges, and the like.
I, SAMUEL FIRTH, of 11, Campden Hill Square, late of 41, Linden Gardens,
Notting Hill Gate, County of London, M.A., 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 for object, constructing or arranging the backs of domestic
and other like stoves and kitchen ranges having side boilers only that air has a
free passage thereto from the ashpit for admixture with the fuel and the products
of combustion and thereby effect economy in the quantity of fuel used besides
ensuring a better diffusion of heat than is possible under present conditions,
it also by communication through the bottom grate prevents ashes accumulating
at the back or on the bottom grate that would interfere with the free passage
of air to the back of the fucl.
To carry my invention into practice, I cast or otherwise prepare a sloping
false back with cheeks or ribs and spaces by which a free air passage is formed
from bottom to top.
The false back may be of bar shape, and each bar solid or hollow is provided
with studs, ribs, or excrescences in regular or irregular order as projections to
keep the back fuel clear of the bars of the back plate and so permit of air passing
through between said bars admixing with the fuel and the products of combustion
in the fire basket, the bottom grate of which has a back gap, or is so shaped that
that part is in direct line, fully or partially with the space behind the false back.
I have referred to bars as portion of the false back but thin webs may be per-
forated or otherwise of an openworked character for the passage of air in fine
streams drawn through them by the uprising heat.
For dog stoves, the fire basket may be provided with the vertical bar and per-
forated back and the slotted bottom-grate as parts thereof ready to be set in
position in the chimney opening, or of such size that it can be set in an ordinary
coal burning fire stove to reduce its capacity and to obtain the advantages before
mentioned.
If the webs of the back be perforated or slotted for the passage of air, I prefer
that such openings should be as near the bottom edge as possible allowing for
the necessary artificial draught at the back for admixture of air with the lower
strata of fuel.
My invention will be clearly understood by reference to the annexed sheet of
drawings.
Figure 1 top plan of studded back grating.
Figure 2 face view.
Figure 3 vertical section of same.
Figure 4 shows said back plate or grating as fitted within a dog stove.
Figure 5 section of dog stove in which the back grating has holes and vertical
ribs, the lower parts of the ribs terminating a short distance above the bottom
grating for the free passage of air from the ashpit into the fuel.
Figure 6 front elevation of fire basket showing the holes and intervening ribs
of the back grating or back plate.
Figures 7 and 8 represent sufficient of a register or parlour stove with my holed
and ribbed book nota 011 quating Tina 7 baina

page_text: back plate or grating of box like formation, as at Figure 4, but to which is a
separate supply of air to said back plate by pipes from the front of the stove.
Figure 9 front elevation of parlour stove with my loose fitting back plate or
back grating in position in the fire basket.
A, back plate or back with slots B and studs C, or with holes D and vertical
ribs E to keep the fuel from coking up the slots or holes and permitting free
passage of air from ashpit F alone or in conjunction with supply through
pipes G, G, from the side cheeks of the stove.
The false back plate A can be provided with rear studs or ribs H to form a
box like space I between the fixed back of the stove, or it may be of box forma-
tion, as at Figures 4, 7, and 8, to be set at the rear of the fire basket, or as a fixed
back to a stove.
I do not purpose making the side cheeks of the fire basket like boxes for
passage of air, but they may be hollow for rarefying the air on its way to the
back box, or behind the back false grating, neither do I make the false back as
a grating only, or as a box to be the full width of the back area between the side
cheeks, as represented at Figure 7, but may make it of less width, as at Figure 8,
and whether the false back be provided with slots and studs, or with holes and
ribs.
If a narrow false back, as seen at Figure 1, the side edges can be provided with
notches J and spurs K.
The arrows in Figures 4, 5, and 7 show the entry and travel and distribution
of the inflowing air.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is: -
1. To a firestove or range, a back studded and slotted either as a loose or as a
permanent back, as described and as shown.
2. To a fire stove or range, a perforated and ribbed back fitted as a permanent
back, whether it be as a plate only, or of box like formation, as and for the pur-
poses described and substantially as shown.
3. The construction of temporary or permanent backs (for stoves and for kit-
chen ranges having side boilers only) as plates or boxes into, through, and from
which air has free play against the fuel which is kept in an open unclogged con-
dition, said air in its passage through the fuel commingling with the products
of combustion, whereby the issue of smoke is reduced, better combustion of the
fuel obtained, giving larger heating properties than at present, as herein described.
4. As an appliance to stoves (parlour and dog) and also to kitchen ranges
having side boilers only, a backing perforated and ribbed, said ribs terminating
at bottom above the usual bottom grate as to leave substantially a clear space
between such lower ends and the rear of the bottom grate, so that air from the
ashpit has free passage in conjunction with air passing through the perforations
and up between the ribs, as and for the purposes specified.
HITA
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Samuel Firth.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Samuel Firth.