IMPROVEMENTS IN THE CONSTRUCTION OF OVENS FOR BAKING PURPOSES
Year: 1885

page_text: "
I, WILLIAM FREDERICK MASON of. Longsight, Manchester, Engineer, do hereby
declare the nature of my invention for IMPROVEMENTS IN THE CONSTRUCTION
OF OVENS FOR BAKING PURPOSES," and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
The improvements relate to the construction and arrangement of ovens for
baking purposes, and are, in part, an extension of an invention, for which Letters
Patent have been granted to me, and which are numbered 3676, and dated
February 21st 1884; and they have for their object the making of such ovens of
a more portable character than has hitherto obtained.
To accomplish this and to effect my improvements, I construct an oven, or ovens,
chiefly of metal by preference of iron, cast and wrought, and of rectangular form--
which oven (or ovens) is placed upon suitable supports or pillars, and is provided
with a furnace, or the whole may be placed upon, or otherwise attached to, a
suitable carriage, or upon wheels, for travelling or other purposes.
There are top and bottom flues, and may be side and end flues, for the passage of
the heated gases; which flues are provided with dampers or valves wherewith the
gases may be directed to any portion of the oven or ovens, or may be sent direct
to the chinney, as in the case of the invention before mentioned and patented
by me.
The drawings represent an oven constructed in accordance with my invention,
in single tier or deck; but two or more ovens may be arranged, one over the other,
with their flues coupled up, and heated by one furnace.
Fig. 1 shews a front elevation, and Fig 2, a transverse section on line C. D.
Fig. 3, a side elevation, and Fig 4, a longitudinal section on line A. B. Figs 5,
and 6, are borizontal sections on lines E. F. and G. H. The same letters indicate
corresponding parts wherever they occur.
a, a, is the furnace, which is fed from the side, and is lined with firebrick or
other refractory material, by preference. The products of combustion are carried
along the tube b, b, to the flues c, c, provided at the top and bottom of the oven,
or it may be, also, along the sides and ends thereof, or any of them. These flues
are provided with dampers or valves d, d, for the purpose of controlling the heat,
7
°

page_text: and directing the same to such portions of the oven as is desired, and which action
has been particularly and further set forth in my specification number 3676 of
the year 1884. The furnace may be separated by a small space, from the oven, or
may be joined thereto entirely; but, by preference, a space is left for the passage
of a screen of air between the two, so as to best prevent special or local heating.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed; I declare that what
I claim is
The application of the method of flues, as laid down in my specification
number 3676 of the year 1884, (for the passage of heated gases,) arranged above
and below, or surrounding the whole, or a portion thereof, and controlled by
suitable dampers or valves, to ovens for baking purposes, constructed with one
or more tiers or decks, and of the special and portable character, substantially as
shewn and described.