Improved Apparatus for Baking Bread and other Articles of Food.
Year: 1890

page_text: Date of Application, 19th Sept., 1890
Complete Specification Left, 19th June, 1891-Accepted, 8th Aug., 1891
Improved Apparatus for Baking Bread and other Articles of Food.
I, WILLIAM THOMAS SUGG, of Vincent Street in the City of Westminster,
Engineer, do hereby declare the nature of this invention to be as follows:-
--
This invention relates to the construction of ovens heated by gas for baking
bread and other articles of food.
The oven is so constructed that its size may be increased or diminished with
facility.
In carrying out this invention the oven which will be of metal is carried on
metal standards set at convenient distances apart and braced together by arched
girders, or in any other convenient manner.
Perforated metal plates are placed on the girders and above these, supports are
arranged to carry plates forming the floor of the oven to receive the trays con-
taining the material to be baked. These plates may be cast with a rib or stiffener
on the under side and holes are made near one or more of their edges as will be
hereafter referred to. The oven may be D shaped and its top may be formed of
cast iron plates with flanges by which the plates will be bolted together with
asbestos joints which will permit of expansion & contraction.
Some of the flanges may be formed with an overhanging portion which may ride
on the top of the adjacent flange and thus prevent the escape of heat.
The centre plates in the crown of the oven will be perforated to allow of the
escape of the heat and steam which will pass away over the top of the dome and
downwards to side flues through openings which may be more or less closed by a
hit and miss slide as required. The side flues communicate with a main flue. The
side walls of the oven I make hollow by which means air spaces are provided
which will serve to prevent radiation.
The oven is heated by gas as before mentioned the burners for which are
arranged to pass through the perforations in the bottom plate. The number of
burners may vary according to requirements. The heat produced will act first
upon the floor of the oven and then pass up through the openings on the floor to
the inside of the oven and will pass out with the steam given off, through the
openings in the crown to the flues."
The back of the oven may be formed of plates bolted or otherwise secured to
the dome and the floor so that they may be readily removed in case it is desired
to increase the size of the ovens by adding more plates or reduce the oven by
removing plates.
By the use of an oven constructed as above described the difficulties hitherto
experienced in bakers ovens will be overcome.
Dated this 19th day of September 1890.
NEWTON & SON,
Agents for the Applicant.

page_text: COMIDELE DI MUIFICATION.
Improved Apparatus for Baking Bread and other Articles of Food.
I WILLIAM THOMAS SUGG of Vincent Street in the City of Westminster,
Engineer, 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 the construction of ovens heated by gas for baking
bread and other articles of food.
In the accompanying drawing
:-
Fig. 1 is a front elevation, shewing a group of ovens constructed according to
my invention.
Fig. 2 is a transverse sectional elevation of the same.
Fig. 3 is a transverse sectional elevation of a single oven on an enlarged scale;
and
Figure 4 is a longitudinal section of the same.
The ovens, whether single or in groups, are supported by cast iron standards of
any convenient shape suitably connected together.
Each oven consists of a cast metal framework composed of various uprights,
crosspieces, longitudinal and transverse bars bolted together, and provided with
ledges or projections to receive and support the walls, roof, floor, and other parts
of the oven, which are composed for the most part of plates of enamelled iron.
Referring now to the drawing, A is an air space open to the atmosphere, in
which air to support combustion enters, and is more or less heated. B is the gas
burner chamber, and C are the gas pipes, which are placed near the sides of the
oven. The burners are arranged to project from these pipes on opposite sides, and
above the burners is arranged a deflector D.
The horizontal'partition between the air space A and gas chamber B, is perforated
immediately below the burners, which are thus supplied with heated air from the
air space.
The roof of the gas chamber is formed of the inclined plates E, which
may be more or less perforated to allow of the passage of a certain amount of the
heat, the greater portion of which will pass round the ends of the plates near the
walls F into the upper part of the oven. Above the plates E, is a kind of grid G,
on which the trays containing the articles to be baked are placed.
At the sides of this grid are vertical plates G¹, composed of a sheet of asbestos
between two sheets of thin iron, which are intended to prevent the heat rising
from the burning gas, scorching the articles to be baked that are nearest the edges
of the grid.
In the roof of the oven is a central opening formed by means of an inverted
trough-shaped bar H with lateral openings.
The heat, etc., passes through these openings into the flue J, which extends over
the top and half way down the sides of the oven, from which flue. the gases are
carried off by the flue or flues K to a chimney. In the group, the chimney is
common to all the ovens.
The spaces A¹ are closed air spaces, which serve to prevent radiation of heat.
The gas supply pipes C are arranged near the front of the ovens, and are
provided with cocks actuated from the outside by means of handles L, having
pointers, and working in front of dials, so that the quantity of gas to be used can
be regulated with facility and exactitude.
The ovens are provided with cast iron doors arranged to open downwards, and
provided with supporting chains, so as to form tables or shelves, on which the trays
containing the articles to be baked can be rested, prior to being placed in or with-
drawn from the oven.
Inside the oven, and across the mouth, is hung a baffle plate M, the object of

page_text: which is to prevent the hot gases collected in the upper part of the oven, escaping
when the door is opened.
The position or inclination of this baffle M may be adjusted by means of the rod
and rack, as shewn, or in any other convenient manner, as required.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
An oven for baking by means of gas, constructed and arranged substantially as
NEWTON & SON,
Agents for the Applicant.