Improvements in Apparatus for Heating Ovens by Gas.
Year: 1893

page_text: Date of Application, 7th Nov., 1893-Accepted, 9th Dec., 1893.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Heating Ovens by Gas.
I, JOHAN LUDWIG WALDEMAR OLSEN, of Store Strandstræde, 10, Copenhagen,
in the Kingdom of Denmark, Manufacturer, 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 improvements in the Letters Patent of 6th June 1891
No. 9625, for improvements in an apparatus for heating ovens by gas. The
apparatus described in the above mentioned Patent, has the disadvantage that
fresh air is not conducted in the proper way and in sufficient quantity to the gas
flame. The object of my present invention is to avoid these difficulties.
The invention consists, in a gas channel combined with air channels above and
below the same, the ends of which channels have their tops and bottoms tapered
toward each other, and the sides flared or curved outward, whereby the air is
conducted directly to the points of combustion of the gas, so that the flame
cannot turn backward, as heretofore, on account of not having a sufficient supply
of air, but on the contrary, on account of a sufficient air supply at all times passes
through the oven.
In the accompanying drawing,
Figure 1 is a plan view of the gas burner.
Figure 2 is a vertical longitudinal sectional view through the burner and air
channels.
and
Figure 3 is a vertical transverse sectional view on the line x-x of Figure 2,
Figure 4 is a diagrammatical view of the front of the oven, showing the ends
of the gas and air channels, as a supplementary air inlet opening.
Similar letters of reference indicate corresponding parts.
The gas-pipe a and the air channels b and c have their ends flared laterally or
widened so as to give them a fan-shape, as is plainly shown in Figure 1, and at
the same time, the top and bottom of the burner thus produced and also of the
intermediate walls are tapered toward each other, as shown in Figure 2.
With this
As shown in Figure 3, the gas and air channels can be made for four
plates, d, e, f, g, having suitable ribs and flanges that form the side walls and
channels, but it is evident that they can be built or constructed in any other
manner. In Figure 4, supplementary air inlet openings are shown, which can be
closed by gates h swinging freely in the openings on pivots 4', h¹.
construction a sufficient quantity of air can at all times pass into the oven, and
when the pressure in the oven is greater than the exterior pressure, the air can
pass out of the oven through said openings. The gates are provided with sight
holes i, through which the burner can be observed. The fan-shaped gas and air
channels have the advantage that the air is conducted directly to the points of
combustion of the gas.
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
1. In an apparatus for heating ovens by means of gas, a burner composed of a
gas channel and air channels, said channels having their tops and bottoms tapered
toward each other and having the sides curved or flared outward to give the burner
a fan shape in plan view, whereby the air is conducted directly to the points of
combustion of the gas, substantially as set forth.
2. In an apparatus for heating ovens by means of gas, constructed with

page_text: supplementary air inlet openings, and gates mounted to swing freely in said
openings, thereby permitting the air to pass through said channel into the oven
and through said channels out of the oven, substantially as set forth.
Dated this 7th day of November 1893.
PHILLIPS & LEIGH,
22, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.