Improvements in and connected with Stewing or Cooking Vessels.
Year: 1890

page_text: Date of Application, 19th Aug., 1890-Accepted, 11th Oct., 1890
Improvements in and connected with Stewing or Cooking
Vessels.
I ALBERT JOHN DOTY of No. 319 West 112th Street New York City in the
County and State of New York, United States of America, Engineer, do hereby
declare the nature of my invention for Stew Pans and in what manner the same is
to be performed to be particularly described and ascertained in and by the following
statement—
My invention relates to stew pans such as are more particularly used for cooking
oysters but applicable also for all purposes of stew pans and consists of such a pan
mounted over a gas flame on cranked trunnions for dumping out the stew and at the
same time swinging the pan away from over the fire so as not to be subject to the
heat when not in use. It also consists of a closed jacket attached to the pan and
charged with a liquid substance to equalize the heat and prevent the scorching and
crusting of the stew on the pan at the margin of the surface of the stew which is
common in such cookers as are heated by direct action of the fire; it also consists of
the cock for turning the gas off and on connected with one of the trunnions of the
pan so as to be automatically opened by the turning of the pan to increase and reduce
the fire according as the pan is on or off the fire, and it also consists of a three way
cock and a separate lighting jet device as a better means of controlling the fire when
the pan is turned on and off than the simple one way cock and the main burner, all
as hereinafter fully described reference being made to the accompanying drawing in
which :--
Fig. 1 is a transverse section of the pan, and burner below for heating said pan and
a side elevation of the rest of the apparatus.
Fig. 2 is a side elevation of the whole apparatus as seen in a plane at right angles
to that of Fig. 1.
Fig. 3 is a section of the three way cock on line x, Fig. 1.
The pan a, is mounted on cranked trunnions b, supported in bearings c of a stand e,
over the ring burner tube d, and has a handle, for turning it to dump out the
contents and to shift it to a position out of range of the flame while not in use, it
being the function of the cranked arrangement to accomplish the latter purpose.
f represents a jacket which I apply to the under side of the pan and I charge the
same with oil, preferably, but I may employ any other liquid of high boiling
temperature and close the filling inlet to permit the pan to be dumped without loss
of the contents of the jacket, and thus provide such a dumping pan with an equalizer
of the heat which prevents the scorching and caking of the stew liquids on the pan
around the margins of the surface so common in the pans exposed directly to the fire
and which is very objectionable.
In charging the jacket I leave a little free space for room to allow the liquid to
expand as it must to some extent by heat, but it is not necessary to provide for steam
because with a liquid of high boiling temperature steam will not be generated in the
short time the pan is exposed to the flame in each operation, and because the pan is
removed from the flame and allowed to cool when not in use.
In the common arrangement of gas heating burners, the cock in the gas pipe that
supplies the gas to the burner has to be turned by hand to reduce the flame for
economizing gas while the cooking is suspended and it is often neglected and much
waste of gas results.
I propose to take advantage of my dumping pan dovice for automatically reducing
the gas supply and therefore arrange this cock g, with its axis in the axis of the
trunnion of the pan as shown, and connect it with one of said trunnions by a suitable
coupling h, to be thus automatically operated thereby to turn off the gas when the
pan is dumped and turn it on when the pan is returned over the fire, and to prevent
[Price 6d.]

page_text: the flame being wholly extinguished I will arrange it so that the cock will not quite
close the passage, but will allow a sufficient flow to maintain a small flame for
renewal of the maximum flame when the pan is returned to its position over the fire,
but as the large burner necessary to the maximum flame is not favourable for so
small a flame as is only necessary for renewal, I prefer to use a three way cock g, with
a lighting branch i, that is turned on when the other is turned off, thus making it
feasible to economize the gas to a greater extent because such a lighting jet- of only
one small flaine will be equally as serviceable for lighting as the most reduced flame
that can be maintained in the main burner, but which is at best very much larger than
the lighting jet.
By so connecting the cock with the pan it is positively operative in unison with
the operations of the pan without care and trouble, and ensures considerable economy
of gas.
represents the supply pipe for the gas which I have represented in the proper
form for connecting to a flexible pipe; is the branch leading to the neck m, of the
burner d.
It is to be understood that the burner tube d, has numerous burner issues as n, for
producing a ring of flame.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is :-
1st. The improved cooking device consisting of the stand having the journal
bearings, the cranked trunnions mounted therein, the stew pan mounted on the said
trunnions and the gas burner under the stew pans substantially as described.
2nd. The combination with a pivoted dumping stew pan, of a closed jacket charged
with a heat equalizing liquid, and retaining said liquid when dumped.
3rd. The combination of the pivoted dumping stew pan. the closed jacket charged
with a heat equalizing liquid, and the gas burner for heating the jacketed pan, said
jacket retaining the equalizing liquid when dumped.
4th. The combination of the pivoted dumping stew pan, the gas burning heater for
the pan, and the stop cock of the burner supply pipe coupled with the trunnion of
the stew pan and automatically operative thereby to control the fire.
5th. The combination of the pivoted dumping stew pan, the gas burning heater for
the pan, the auxiliary lighting jet, and the three way stop cock of the burner supply
pipe coupled with the trunnion of the stew pan and automatically operative thereby.
to shut off the heating burner and let on the lighting jet, and vice versa as the stew
pan is dumped and replaced.
Dated this 19th day of August. 1890
PHILIP M. JUSTICE,
55, Chancery Lane, London, Associate Agent.