Year: 1888

page_text: 1, SAMUEL GIBSON RHODES Dentist, of 17 Springfield Place, Leeds, 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
The improvements in gas ovens according to my Invention are illustrated in the
accompanying sheet of drawings, Figure 1 being a transverse sectional elevational
view and Figure 2 a longitudinal sectional elevational view, the same letters of reference
being employed to denote corresponding parts in each view. A is the outside casing
of oven; B the inner casing; C flue space; D internal lining or jacketting of any
suitable non-conducting material to prevent radiation of heat; E gas tube and jets
forming burners; F an arrangement of metal tubes to allow of the introduction of
heated fresh air into the interior G of the oven. The air enters as indicated by the
arrow at f, and on the jets being ignited an induced current or inflow takes place
through the tubing disposed preferably as shewn between the burner tubing E and
bottom of oven, passing up the back and ends; the heated air making its exit into the
interior of the oven at the back near the top thereof.
In a gas oven constructed according to my Invention the space H below the gas
jet tubing E forms a supplementary oven (relatively to the oven-proper G) to allow
of cooking by means of the radiated heat confined within said space, which is also
furnished with an adjustable shelf or platform I which may be raised or lowered at
will by means of the jointed levers J, worked from the lever K, with spring catch k
taking into the notched quadrant. This last described arrangement of mechanism
dispenses with the necessity for loose shelves to be shifted by hand, and allows of
perfect command being had over and the utilisation of the temperature according to
the requirements in regard to the article to be cooked.
The improved gas oven according to my Invention is provided with the usual
doors L. It is furnished also with a flue or outlet M for the products of com-
bustion. N is a sliding ventilator to allow of the fumes being carried away from the
interior of oven into external flue communicating with outlet M.

page_text: I wish it to be understood that although in the drawings I have shewn the tubes F
as being of circular form in section: these may assume any other shape in transverse
section. For instance instead of tubes-proper, the passages F for the in-flow of air
to be heated may assume the form of a sheet space or of sheet spaces.
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:
First. The improved gas cooking Oven substantially as herein described and shewn
in the accompanying drawings.
Second. In a gas Oven the employment of tubes or passages for the utilisation of
heated fresh air substantially as and for the purposes herein set forth.
Third. In a gas Oven the adjustable shelf or platform I worked in the manner and
for the purposes substantially as herein set forth.
1000
JAMES STEVENSON,
Gray's Inn Chambers,
20, High Holborn, W.C.,
Agent for Applicant.