IMPROVEMENTS IN AND RELATING TO FIRE-PLACES AND GRATES FOR WARMING ROOMS, HALLS, AND OTHER PLACES
Year: 1881

page_text: LETTERS PATENT to William Phillips Thompson, of the Agency for Foreign
Patent Solicitors, of 6, Lord Street, Liverpool, in the County of Lancaster,
and 323, High Holborn, in the County of Middlesex, Civil Engineer,
for an Invention of "IMPROVEMENTS IN AND RELATING TO FIRE-PLACES
AND GRATES FOR WARMING ROOMS, HALLS, AND OTHER PLACES." A com-
munication from abroad from John Malcolm Cook, of Cincinnati, in the Stato
of Ohio, United States of America.
PROVISIONAL SPECIFICATION left by the said William Phillips Thompson
at the Office of the Commissioners of Patents on the 27th September 1881.
WILLIAM PHILLIPS THOMPSON, of the Agency for Foreign Patent Solicitors,
of 6, Lord Street, Liverpool, in the County of Lancaster, and 323, High Holborn,
in the County of Middlesex, Civil Engineer. "IMPROVEMENTS IN AND RELATING
TO FIRE PLACES AND GRATES FOR WARMING ROOMS, HALLS, AND OTHER
PLACES." A cominunication from abroad from John Malcolm Cook, of Cincinnati,
in the State of Ohio,. United States.
The objects of this Invention are to economize fuel and to insure the radiation
into the room of the heat usually absorbed by the walls of the fire-place or carried
up through the flue. Its object is also a cheap portable device which will occupy
but little space in the room and will present a neat ornamental appearance.
The principal parts are as follows:-A sheet of metal of a size to cover the
customary grate or stove opening in the chimney and to overlap or rest against
the wall surrounding the opening; this plate is perforated to receive the thimble
of the fire-back, which is the segment of a corrugated dome-shaped shell, made
preferably of cast iron; it has lugs cast upon it to support the grate. The fire-back
is held in place by a perforated moulded frame, the inner front part of which rests
against the front edge of the fire-back. The outer edges of the frame incline back
and rest against the plate, the plate and frame being secured together at the
outer edges securely hold the fire box between them.

page_text: The grate is supported upon the lugs cast upon the fire-back by journal pins
extending from the end bars of the grate, one of these pins extends through the
fire-back and frame, and has a square or angular end to receive a key or wrench
by which the grate may be shaken or tilted to free it from ashes.
The lower portion of the fire-box is protected by a lining of fire-tile, which has
circular or other shaped vertical grooves around the back to admit air from below
to pass up between the tiles and fire-back and unite with the carbonaceous gases,
thus promoting combustion.
The thimble within the flue receives a joint of pipe which is provided with a
damper which is actuated by a rod that extends to the outside through the plate
and frame, and terminates in a knob or handle.
The improved fire-place is secured in front of the opening usually left for the
common grate, by the back plate being secured against the wall. If desired the
back may have inwardly projecting flanges to retain a non-conducting lining of
Asbestos or similar material, to insure a moro perfect radiation of the heat given
off by the fire-back into the room through the perforated openings in the frame.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent and
of an Order of the Lord Chancellor filed by the said William Phillips Thompson
in the Great Seal Patent Office on the 29th March 1882.
WILLIAM PHILLIPS THOMPSON, of the Agency for Foreign Patent Solicitors,
of 6, Lord Street, Liverpool, in the County of Lancaster, and 323, High Holborn,
in the County of Middlesex, Civil Engineer. "IMPROVEMENTS IN AND RELATING
TO FIRE PLACES AND GRATES FOR WARMING ROOMS, HALLS, AND OTHER PLACES.".
A communication from abroad by John Malcolm Cook, of Cincinnati, in the State
of Ohio, United States of America.
The objects of this Invention are to economise fuel and to insure the radiation
into the room of the heat usually absorbed by the walls of the fire place or carried
up through the flue. The object is also a cheap portable device which will occupy
but little space in the room and will present a neat ornamental appearence.
Theso objects are accomplished by the means illustrated in the accompanying
Drawings forming part of this Specification, in which Fig. 1 shows the improved
fire-place in front elevation; Fig. 2 is a central vertical section of the same, and
Fig. 3 is a horizontal section taken just above the fire basket. Similar referance
letters indicate the same parts in the different views.
A represents a sheet of metal of a size to cover the customary grate or stove
opening in the chimney, and to overlap and rest against the wall surrounding tho
opening, this plate is perforated to receive the thimble B of the fire back C, which
is the segment of a corrugated dome-shaped shell, made preferably of cast iron; it
has lugs cast upon it to support the grate D. The fire-back is held in place by a
perforated moulded frame E, the inner front part of which rests against the front
edge of the fire back. The outer edges of the frame E incline back and rest
against the plate A, the plate and framo being secured together at the outer edges,
securely hold the fire box between them.
The grate is supported upon the lugs cast upon the fire-back by journal pins
extending from the end bars of the grate; one of these pins extends through the
fire back C and frame E, and has a square or angular end to receive a key or
wrench by which the grate may be shaken or tilted to free it from ashes.
The lower portion of the fire box C is protected by a lining of fire tile F which
has circular or other shaped vertical grooves around the back to admit air from
below to pass up between the tiles and fire back, and unite with the carbonaceous
gases, thus promoting combustion.
The thimble B within the flue receives a joint of pipe which is provided with
a damper which is actuated by a rod G that extends to the outside through
plate A and frame E, and terminates in a knob or handle.
The improved fire place is secured in front of the opening usually left for the
common grate, by the back plate being secured against the wall. If desired the
back A may have inwardly projecting flanges to retain a non-conducting lining of
asbestos or similar material to insure a more perfect radiation of the heat given off
by the fire back into the room through the perforated openings in the frame E.
Having now described this Invention as communicated to me, I wish it to be
understood that what I desire to protect under the hereinbefore in part recited
Letters Patent is,―
A fire-place grate adapted to be set on the hearth in front of and covering the
opening of an ordinary fire-place, constructed substantially as before set forth,
that is to say, of a back plate, a grated fire box adjacent thereto, and provided

page_text: with a smoke-fue projecting through an opening in said back plate, and a fire box
inclosing and retaining frame, which forms an ornamental front, and is perforated
to allow the heat radiated from the rear of the fire box to enter the room.
In witness whereof, I, the said William Phillips Thompson, have hereunto set
my hand and seal, this Twenty seventh day of March, in the year of our
Lord One thousand eight hundred and eighty two.