IMPROVEMENTS IN BAKING OVENS
Year: 1882

page_text: LETTERS PATENT to James Russell Chibnall, of 79 King Street Hammersmith,
in the County of Middlesex, for an Invention of IMPROVEMENTS IN BAKING
OVENS"
PROVISIONAL SPECIFICATION left by the said James Russell Chibnall at
the Office of the Commissioners of Patents on the 16th August 1882.
JAMES RUSSELL CHIBNALL of 79 King Street Hammersmith in the County of
Middlesex. IMPROVEMENTS IN BAKING OVENS."
"
This Invention has reference to Improvements in the construction of Baking
Ovens whereby their action is rendered quicker and more efficacious and
economical.
For this purpose I construct ny improved Oven with the Furnace at the back
which Furnace with the Flues located in the centre of the Oven the heat therefrom
being communicated to the side flues by occasional openings in side walls of the
said Furnace flues whereby I maintain by this arrangement to secure a more even
distribution of heat on the surface of the Oven bottom the said heat being con-
veyed by two flues placed at opposite corners in front of said oven for better
distribution of said heat over the top which heat is regulated by dampers fixed in
the vertical flues.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Russell Chibnall in the Great Seal Patent Office on the
15th February 1883.
JAMES RUSSELL CHIBNALL of 79 King Street Hammersmith in the County of
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Russell Chibnall in the Great Seal Patent Office on the
15th February 1883.
JAMES RUSSELL CHIBNALL of 79 King Street Hammersmith in the County of
"
IMPROVEMENTS IN BAKING OVENS
Baulesex
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Russell Chibnall in the Great Seal Patent Office on the
15th February 1883.
JAMES RUSSELL CHIBNALL of 79 King Street Hammersmith in the County of
Diddlesex "IMPROVEMENTS IN BAKING OVENS ”
This invention relates to improvements in the construction of Bakers' Ovens
whereby their action is rendered quicker and more efficacious and economical
Price 41

page_text: My improvements consist in the construction of Baking Ovens whereby their action
is rendered quicker, more efficacious and economical by the better and more even
distribution of the heat at the bottom as well as at the top of said Baking Ovens
and for this purpose I build them with the furnace in the centre at the back of the
oven from which the hot air and gases generated by same are conveyed through
an internal and slightly inclined horizontal flue, having a number of apertures or
passages on each side, to the hot air chamber situated immediately under the
bottom of the baking chamber from whence after permeating in the direction as
shown by the arrows (on the sheet of drawings forming part of this specification)
the hot air and gases pass upward through two internal vertical or upright shafts
or flues situated at opposite corners in the front part of said oven, to the hot air
chamber located at the top of the aforesaid baking chamber, the temperature of the
said hot air or gases being regulated by dampers fixed in convenient positions in
the shafts or flues and having outlets communicating with the chimney For the
better retention of the heat the internal walls of my improved oven are constructed
of fire brick, or lined with blocks of fire clay, whilst the floor of the Baking
chamber rests on a foundation of sand and the roof of the upper hot air chamber
is covered by a layer of concrete The roof and floor of the baking chamber (the
entrance door of which is fixed in the front part of the oven) may be composed of
sheet iron or fire proof tiles resting on T iron or other suitable supports. To more
clearly explain the nature of my invention reference is made to the accompanying
drawings which form part of this specification and in which.
Fig 1 is a front elevation of my improved oven; Fig 2 is a vertical section of
Fig 1 through the line A. B; Fig 3 is a horizontal section through the line C. D or
lower hot air chamber and Fig 4 is a horizontal section through the line E F or
upper hot air chamber. A. Fig 1 is the door of the Baking chamber. B. B are the
dampers; C. C the soot doors or openings for cleaning the chambers, and Flues;
D is the outlet chimney E the furnace at rear; F the ash Pit; G the baking
chamber; H the upper hot air chamber; I the horizontal furnace flue, J lower
hot air chamber K, the fire brick walls, L the layer of concrete, a¹ the furnace
door; the grate bars and c the opening for the admission of air into the
furnace
Having now described my invention and how the same may be carried into
effect I would have it understood that I do not confine myself to the precise details
above mentioned as these may be modified without departing from the principle of
my invention But what I do claim and desire to secure by Letters Patent is, the
construction of Baking Ovens substantially as described and represented in the
different figures of the drawings
In Witness whereof I the said James Russell Chibnall have hereunto set
my hand and seal this fourteenth day of February in the year of Our Lord
one thousand eight hundred and eighty three
Signed, sealed and delivered
in the presence of
HENRY W HAMMOND
JAMES RUSSELL CHIBNALL (L.S.)