IMPROVEMENTS IN STOVES FOR HEATING AND VENTILATING."
Year: 1882

page_text: LETTERS PATENT to Robert Garden Greig, of Dalston, in the County of
Middlesex, for an Invention of "IMPROVEMENTS IN STOVES FOR HEATING
AND VENTILATING." A communication from abroad by the Detroit Stove
Works Company, of Detroit, Michigan, United States of America.
PROVISIONAL SPECIFICATION left by the said Robert Garden Greig at the
"IMPROVE-
Office of the Commissioners of Patents on the 18th January 1882.
ROBERT GARDEN GREIG of Dalston in the County of Middlesex.
A communication from
MENTS IN STOVES FOR HEATING AND VENTILATING,"
abroad by the Detroit Stove Works Company of Detroit Michigan United States
of America.
This Invention relates essentially to the following features in a heating stove.
First, the combination with the magazine section of a separated plated shell
surmounting the same so as to leave an air space between the two and permitting
air to enter beneath the lower edge and emerge about the upper edge of the said
shell.
Secondly. In combining with the magazine an annular chute or hopper projecting
from the top down into the magazine so as to leave a small annular opening at the
top end of the magazine cylinder thereby permitting gases to escape from the top
of the fuel and pass down over the top of the cylinder to the combustion chamber,
yet effectually checking any tendency of a draft in this direction.
Thirdly. In the provision of a grate of a peculiar construction.

page_text: ornament. This plating has usually been done with nickel or other non-oxidizable
metal.
Experience however has proven that when subjected to a considerable heat this
plated surfrce will become more or less corroded and discolored doubtless owing to
the pressure of sulphurious gases and oxygen or both in the presence of a high
heat.
In order to overcome this difficulty the stove is constructed as follows.
In the Drawing A is the combustion chamber of a stove, B is its fire pot, C its
fuel magazine and D the magazine stove section of the stove.
Heretofore this latter section has formed the outer wall of the stove and has
been subject to great heat, but according to these improvements in the exterior of
this magazine section a separate section E is arranged which is ornamented with
nickel or other plating. This section however is of sufficient diameter to leave an
air space e between it and the magazine stove section. It is open around the
bottom at e¹ and connects with an open or perforated top at e². By this construc-
tion a current of cool air is always circulating between the magazine stove section
and this exterior ornamental section which keeps the latter sufficiently cool to avoid
all discoloration of the plated surfaces.
Heretofore where magazines open around the upper edge have been employed to
carry off gases that collect in the magazine difficulty has been experienced in
preventing a draft at this point as the stove becomes heated and a consequent
burning of the fuel in the magazine itself.
To overcome this difficulty a funnel shape chute or hopper C¹ is provided which
projects down from the top into the magazine and operates to effectually check this
tendency and limit it to a degree only sufficient to carry off the gases through the
annular opening c².
The grate is constructed as follows. F is an annular ring or grate frame
supported by legs f which rest upon the base top G Figure 1 of the stove. F¹ is a
shaking grate with a depending flanged edge fi which sets down into bearings f²
upon the grate frame F. The shaking grate is provided with radial grate bars
which descend as they approach the center and terminate so as to leave an open
space at the middle through which all clinkers will work.
Beneath the central opening is a slide grate F3 of a little greater breadth than
the opening above. It is supported upon suspenders F2 which depend from the
rate frame F and may be drawn out or shaken as shown by the dotted lines. This
slide grate is so constructed that when drawn well out an open space f³ will be
brought opposite the central opening in the grate above and permit clinkers to drop
through into the ash pit.
The loose shaking grate F' is provided with a shank and socket finto which
a shaking handle may be inserted to shake the grate by rotating it back and
forth.
A grate of this construction may readily be kept clean of ashes at all points can
be damped when desired through the grate beneath and will dispose of clinkers
when formed moreover it is found in use that it generally prevents the formation
of clinkers because those elements which would otherwise serve as a flux together
with the mineral ingredients which would unite with them in forming clinkers are
caused to drop before uniting over the grate beneath and here the temperature
is so low that they fail to unite and are dropped into the ash pit as dust and
ashes.
The arrangement or design of this improved stove may be described essentially
as follows.
It consists of a nickel ornamental magazine section surmounted by a conical
cover the surface of which is formed of annular bands of such external shape as to,
break up what would otherwise be a regular conical outline. From the centre of
its top rises an urn advantageously nickel plated or ornamented with nickel
trimmings.
Beneath the magazine section is a combustion chamber section bulged outwardly

page_text: from top to bottom in convex form and illuminated by a double series of mica
windows. Beneath this is a fire pot section dished outwardly from top to bottom
in concave form illuminated with a single series of mica windows. Beneath this
is the ash pit section somewhat larger at its base than at its top and ter-
minating at its base with a rather steep hearth or base section and a polished
foot rail.
| Back of the stove is an oven section ornamented with nickel trimmings and?
nearly square inside elevation.
Among the striking characteristics of the design are the polished broad bands at
the top and bottom of the magazine section at the base of the combustion chamber
and fire pot section and upon the hearth section.
The ornaments may be silver plated or gilded instead of nickel plated also the
general character of the stove may be altered without varying the general
characteristics of the design.
Thus the arrangement or design may be applied to a parlor heater with a rear
oven attachınent. Or it may be applied to a stove without an oven but with a
place for heating a kettle or cooking.
It may also be applied to a stove similar in all respects to the others except its
base section is square instead of being in round form, but in all of them the
general arrangement or design is the same and the distinguishing characteristics
are the same.
The novel features of this invention are as follows;
1°. In a heater stove the combination with the magazine section of a separate
cylindrical section, surmounting the same so as to leave an air space between the
two said air spaces communicating freely at the top and bottom with the external
air of the room.
".
2°. In a heater stove the combination with the magazine section of a separate
cylindrical plated section surmounting the same so as to leave an air space between
the two said air spaces communicating freely at the top and bottom with the
external air of the room.
3º In a magazine stove a magazine communicating with the combustion chamber.
through an opening at its upper edge and in connection therewith an annular
schute extending from the top down into the magazine.
4°. In a grate a rotating grate ring open at the middle and a grate located on a
plain beneath the latter the said lower grate supported by arms independent of the
shaking grate and adapted to be slid longitudinally within its support.
5°. In a grate a rotating grate ring with depending radial grate bars open at the
middle and in connection therewith a sliding grate beneath supported in a fixed
position by stationary arms.
6°. A grate consisting of a stationary grate ring with legs for supporting it from
the stove a rotating grate open at its middle and located within the outer grate
ring and a grate located beneath the said opening resting in supports depending
from the outer ring and adapted to be slid in and out upon its said supports.
7°. The improved general arrangement construction and combination of parts
forming the stoves herein before described.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Robert Garden Greig in the Great Seal Patent Office on the
18th July 1882.
ROBERT GARDEN GREIG of Dalston in the County of Middlesex. "IMPROVE-
MENTS IN STOVES FOR HEATING AND VENTILATING." A communication from
abroad by the Detroit Stove Works Company of Detroit Michigan United States
of America.
This invention relates essentially to the following features in a heating stove;
First. The combination with the magazine section of a separated plated shell
surmounting the same so as to leave an air space between the two and permitting
air to enter beneath the lower edge and emerge about the upper edge of the said
shell.
Secondly. In combining with the magazine an annular chute or hopper projecting
from the top down into the magazine so as to leave a small annular opening at the
top end of the magazine cylinder thereby permitting gases to escape from the top
of the fuel and pass down over the top of the cylinder to the combustion chamber,
yet effectually checking any tendency of a draft in this direction.
Thirdly. In the provision of a grate of a peculiar construction.
In the Drawings Figure 1 is a central vertical section in outlines of a stove
embodying these improvements.
Figures 2, 3, and 4 are separate views of the grate, and Figures 5 6 and 7 are
elevations of two stoves complete differing slightly in form only.
Heretofore in the construction of heating stoves it has been customary to
embellish the magazine section by plating the same or attaching thereto a plated
ornament. This plating has usually been done with nickel or other non-oxidizable
metal.
Experience however has proven that when subjected to a considerable heat this
plated surface will become more or less corroded and discolored doubtless owing to
the pressure of sulphurious gases and oxygen or both in the presence of a high
heat.
In order to overcome this difficulty the stove is constructed as follows;
In the drawing A is the combustion chamber of a stove, B is its fire pot, C its
fuel magazine and D the magazine stove section of the stove.
Heretofore this latter section has formed the outer wall of the stove and has
been subject to great heat, but according to these improvements on the exterior of
this magazine section a separate section Ę is arranged which is ornamented with
nickel or other plating. This section however is of sufficient diameter to leave an
air space e between it and the magazine stove section. It is open around the
bottom at e¹ and connects with an open or perforated top at e³. By this construc-
tion a current of cool air is always circulating between the magazine stove section
and this exterior ornamental section which keeps the latter sufficiently cool to avoid
all discolouration of the plated surfaces.
°
Heretofore where magazines open around the upper edge have been employed to
carry off gases that collect in the magazine difficulty has been experienced in
preventing a draft at this point as the stove becomes heated and a consequent
burning of the fuel in the magazine itself.
To overcome this difficulty a funnel shape chute or hopper C₁ is provided which
projects down from the top into the magazine and operates to effectually check
this tendency and limit it to a degree only sufficient to carry off the gases through
the annular opening c'.

page_text: The grate is constructed as follows; F Figure 2 is an annular ring or grate frame
supported by legs f which rest upon the base top G Figure 1 of the stove. F¹ is a
shaking grate with a depending flanged edge which sets down into bearings f³
upon the grate frame F. The shaking grate is provided with radial grate bars
which descend as they approach the centre aud terminate so as to leave an open
space at the middle through which all clinkers will work.
Beneath the central opening is a slide grate F³ of a little greater breadth than
the opening above. It is supported upon suspenders F2 which depend from the
grate frame F and may be drawn out or shaken as shown by the dotted lines.
This slide grate is so constructed that when drawn well out an open space f³
Figure 4 will be brought opposite the central opening in the grate above and permit
clinkers to drop through into the ash pit.
The loose shaking grate F¹ is provided with a shank and socket f' into which a
shaking handle may be inserted to shake the grate by rotating it back and
forth.
A grate of this construction may readily be kept clean of ashes at all points can
be damped when desired through the grate beneath and will dispose of clinkers
when formed moreover it is found in use that it generally prevents the formation
of clinkers because those elements which would otherwise serve as a flux together
with the mineral ingredients which would unite with them in forming clinkers are
caused to drop before uniting over the grate beneath and here the temperature is
so low that they fail to unite and are dropped into the ash pit as dust and ashes.
The arrangement or design of this improved stove may be described essentially
as follows.
It consists of a nickel ornamental magazine section surmounted by a conical
cover the surface of which is formed of annular bands of such external shape as to
break up what would otherwise be a regular conical outline. From the centre of
its top rises an urn advantageously nickel plated or ornamented with nickel
trimmings.
Beneath the magazine section is a combustion chamber section bulged outwardly
from top to bottom in convex form and illuminated by a double series of mica
windows. Beneath this is a fire pot section dished outwardly from top to bottom
in concave form illuminated with a single series of mica windows. Beneath this
is the ash pit section somewhat larger at its base than at its top and terminating
at its base with a rather steep hearth or base section and a polished foot rail.
Back of the stove an oven section may be arranged ornamented with nickel
trimmings and nearly square inside elevation.
Among the striking characteristics of the design are the polished broad bands at
the top and bottom of the magazine section at the base of the combustion chamber
and fire pot section and upon the hearth section.
The ornaments may be silver plated or gilded instead of nickel plated also the
general character of the stove may be altered without varying the general
characteristics of the design.
Thus the arrangement or design may be applied to a parlor heater with a rear
oven attachment as shown in Figure 5. Or it may be applied to a stove without
an oven but with a place for heating a kettle or cooking as shown in Figures 6
and 7.
It may also be applied to a stove similar in all respects to the others except its
base section is square instead of being in round form, but in all of them the
general arrangement or design is the same and the distinguishing characteristics are
the same.
Having thus described the nature of the invention communicated to me from
abroad, I would remark that no claim is made to any of the parts separately which
are well known and in common use, But what I claim on behalf of the said Detroit
Stove Works Company is-
First. In a heater stove the combination with the magazine section of a separate
cylindrical section surmounting the same so as to leave an air space between the

page_text: two said air paces communicating freely at the top and bottom with the external
air of the room substantially as and for the purpose herein before described and
represented in the drawings annexed.
Second. In a heater stove the combination with the magazine section of a separate
cylindrical plated section surmounting the same so as to leave an air space between
the two said air spaces communicating freely at the top and bottom with the
external air of the room substantially as and for the purpose hereinbefore described
and represented in the Drawings annexed.
Third. In a magazine stove a magazine communicating with the combustion
chamber through an opening at its upper edge and in connection therewith an
annular chute extending from the top down into the magazine substantially as
and for the purposes hereinbefore described and represented in the drawings
annexed.
Fourth. In a grate a rotating grate ring open at the middle and a grate located
on a plane beneath the latter the said lower grate supported by arms independent
of the shaking grate and adapted to be slid longitudinally within its support
substantially as and for the purposes hereinbefore described and represented in the
drawings annexed.
Fifth. In a grate a rotating grate ring with depending radial grate bars open at
the middle and in connection therewith a sliding grate beneath supported in a
fixed position by stationary arms substantially as and for the purposes herein before
described and represented in the drawings annexed.
Sixth. A grate consisting of a stationary grate ring with legs for supporting it
from the stove, a rotating grate open at its middle and located within the outer
grate ring and a grate located beneath the said opening resting in supports depending
from the outer ring and adapted to be slid in and out upon its said supports
substantially as and for the purposes hereinbefore described and represented in the
drawings annexed.
Seventh. The improved general arrangement construction and combination of
parts forming the stoves hereinbefore described and represented in the drawings
hereto annexed.
In witness whereof I the said Robert Garden Greig have hereunto set my
hand and seal this Eighth day of July in the year of our Lord One
thousand eight hundred and eighty two.