Improvements in and relating to Gas and other Ovens.
Year: 1886

page_text: I, THOMAS FLETCHER of Thynne Street Warrington in the County of Lancaster,
Gas Engineer, do hereby declare the nature of this invention to be as follows:-
These Improvements have for their object to secure a more regular and efficient
ventilation of gas and other ovens employed for cooking and consist in the
adaptation to or arrangement with two or more upper parts or sides of the oven
of a ventilating channel or channels in communication with the interior of the
oven and with an outlet nozzle or flue respectively.
A convenient method of carrying this Invention into effect is to cast or form
the top of the oven convex as viewed from the outside or some other similar form
with perforations through two or more of the sides. A casing is then placed over
the arched or convex top or over the perforated sides only in such a manner as to
form two more channels or chambers between the casing and the perforated sides
leading to the outlet flue or nozzle. The space over the arched top or between
the arched top and the casing may be packed or coated with a non-conducting
material or if enclosed it may be left to form an air-jacket in which case the air-
jacket may be divided or separated from the ventilating chambers or channels by
bars flanges or by other suitable means.
Improvements in and relating to Gas and other Ovens.
I THOMAS FLETCHER of Thynne Street Warrington in the County of Lancaster
Gas 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 :-
These Improvements have for their object to secure a more regular and efficient
Cooling and concist in the dent.

page_text: ation to or arrangement with two or more upper parts or sides of the oven
of a ventilating channel or channels in communication with the interior of the
oven and with an outlet nozzle or flue respectively.
A convenient method of carrying this Invention into effect is to cast or form
the top of the oven convex as viewed from the outside or some other similar form
with perforations through the side or sides of the convex top.
A casing is then placed over the arched or convex top or over the perforated
sides only in such a manner as to form two or more channels or chambers between
the casing and the perforated sides leading to the outlet flue or nozzle. The space
over the arched top or between the arched top and the casing may be packed or
coated with a non-conducting material or if enclosed it may be left to form an air
jacket in which case the air jacket may be divided or separated from the ventilating
chambers or channels by bars, flanges or by other suitable means.
This Invention may be more readily understood by reference to the accompanying
sheet of drawings on which Fig. 1 represents a partial vertical section and Fig. 2
a sectional plan of an oven having these improvements applied thereto. In each
of the Figures similar parts are indicated by similar letters.
A, is the arched or convex top of the oven, B. B. are perforations through the
sidės of A; C. C. are channels or chambers between the arched or convex top and
the oven casing D;. E. is the flue or outlet for the waste gases; F, is a packing of
non-conducting material which may however be omitted; G, are points or pro-
jections formed on the underside of A; but these are not essential nor do they
constitute any part of this Invention. The arrows indicate the direction taken by
the waste gases in passing from the oven to the flue.
The construction represented in the Drawings is the most convenient and
generally useful but I desire it to be distinctly understood that I do not limit
myself to the example therein illustrated as this may be modified or varied in
many ways.
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 adaptation and arrangement to gas and other ovens and the combination
therewith, of a ventilating channel or channels communicating with the interior
of the oven and with a flue or outlet, substantially as and for the purpose herein-
before described and as illustrated on the accompanying Sheet of Drawings.
Dated this 24th day of November. A.D. 1886.