Improvements in and connected with Gas Ovens.
Year: 1890

page_text: ate of Application, 16th May, 1890-Accepted, 5th July, 1890
COMPLETE SPECIFICATION.
Improvements in and connected with Gas Ovens.
We, THOMAS FLETCHER and ALFRED CLARE, both of Thynne Street Warrington
in the County of Lancaster, Manufacturers of Gas Apparatus, 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 gas ovens and it has for its object to enable such ovens to
be used for grilling and for toasting in addition to their ordinary employment for
roasting and baking.
According to these Improvements the gas oven may be constructed in the ordinary
or in any suitable and convenient manner with the usual burner or burners in the
lower part for roasting or baking; but in addition to the ordinary details of con-
struction we insert within the upper part of the oven an inverted radiating surface of
fire-brick, iron, or other suitable material over which the flame or flames from a
grilling burner or from grilling burners is or are caused to pass.
The cocks or taps
which are employed to control the supply of gas to the upper or grilling burner and
to the lower or roasting burner respectively, are arranged in such a manner that the
upper and the lower burners cannot both be turned on at the same time and that
therefore the fumes from the lower burner cannot suffocate the flame from the upper
burner.
We will more particularly describe our said Invention with reference to the accom-
panying sheet of drawings in which Figure 1 is a sectional elevation and Figure 2 a
sectional side view.
A is the body of the oven; B is a radiating surface of fire-brick; C is the grilling
burner; D is the ordinary roasting burner; E is a tube or pipe connected with the
gas service pipes; F is a three-way cock; G is a pipe connecting the three-way cock
with the grilling burner; and H is a similar pipe connecting the cock with the
roasting burner..
It is preferred to form corrugations projections or protuberances upon the radiating
surface as represented in the Figures, for the purpose of enabling the surface to be
more rapidly heated and for increasing the radiating effect. It is also preferred to
construct the radiating surface on the lower side of suitable fire-bricks although cast
iron may in some cases be employed, and to form it in two parts with a little space
between them in which the upper part of the grilling burner may lie when a bar
burner is used, as shewn in Figure 2.
The gas inlets to the burners are represented as being controlled by the three-way
cock F, and when this is used it is arranged in such a manner that in one position of
the handle the gas supply is cut off from both burners; in another position the gas is
admitted to the roasting burner only; and in a third position it is admitted to the
grilling burner only. Instead however of employing a three-way cock, two inde-
pendent taps may be employed on the pipes G and H, and these taps are connected or
interlocked in such a manner that when one of them is opened the other is simul-
taneously closed. In this case, at the intermediate position of both taps both the inlets
are closed, but when moved to the right one of the inlets is opened, whilst the other
is opened by a motion to the left; or, the two connected or interlock ed taps may be
employed to direct the gas supply to one or other of the burners as may be desired ;
and the gas may be shut off altogether by means of a tap on the service pipe E.
The construction and operation of the cocks and taps hereinbefore described is well
understood and we have not therefore represented the details of their construction in
the drawings

page_text: Having now particularly described and ascertained the nature of our said Inven-
tion and in what manner the same is to be performed, we declare that what we
claim is―
In a gas oven, the combination and arrangement of a roasting burner in the lower
part of the oven and a grilling burner and grilling arrangements in the upper part of
the oven, with suitable gas inlet pipes and control taps or cocks, the taps or cocks
being so arranged that the gas cannot be admitted simultaneously to both the roasting
and the grilling burners, substantially as hereinbefore described and as illustrated by
the accompanying drawings.
Dated this 11th day of May A D 1800.
WILLIAM E. HEYS,
Agent for the Applicants.