Certain ImprovemENTS IN THE CONSTRUCTION OF PORTABLE COOKING OVENS, APPLICABLE TO CAMP AND FIELD AND OTHER SUCH LIKE PURPOSES
Year: 1879

page_text: LETTERS PATENT to John Murrell Timmis, of Birmingham, in the County of
Warwick, for the Invention of "Certain ImprovemENTS IN THE CONSTRUCTION
OF PORTABLE COOKING OVENS, APPLICABLE TO CAMP AND FIELD AND OTHER
SUCH LIKE PURPOSES."
.
PROVISIONAL SPECIFICATION left by the said John Murrell Timmis at the
Office of the Commissioners of Patents on the 26th June 1879.
JOHN MURRELL TIMMIS, of Birmingham, in the County of Warwick.
IMPROVEMENTS IN THE CONSTRUCTION OF PORTABLE COOKING OVENS, APPLICABLE
TO CAMP AND FIELD AND OTHER SUCH LIKE PURPOSES."
"
CERTAIN
My Invention relates to improvements in portable cooking ovens, chiefly adapted
to the ground, and employed for camp, field, and such like purposes, and consists of
the following arrangement of parts.
For the camp and field I employ one or more ovens or cooking chambers of any
form or size most suitable to my requirement, composed of iron, wrought, cast, or
other metal; these chambers rest or find their bearing upon an arched base or
pedestal, having upon the sides of the said pedestal flanges, in width sufficient to
form a solid bearing when upon the ground, the earth having a corresponding
recess to the arched base, and in this recess the fire is laid; this I designate the fire
hole. (I arrange a closed fire box and bars) at the one end of the ovens, and in con-
tinuity to the recess above named is a passage or closed chamber, the same in
width as the ovens; through this the air and heat travels to the upper surface of
the oven, imparting a general heat to the said ovens, the smoke being emitted
from an ordinary funnel directly above the arched base where the air entered.
The advantages derivable from this Invention are as follows:-
1. The simplicity in construction, and being more readily fixed without sinking
in the earth, not so liable to disarrangement by wind or rain as those now
employed.
2. Economy in the consumption of fuel, and the cooking effected in a more
expedious manner,
3. The recess or firehole being outside the tent (when applied to such purpose)
and the funnel also, no smoke or dirt can enter the tent as hitherto has been the
case.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Murrell Timmis in the Great Seal Patent Office on the 24th
December 1879.
" CERTAIN
JOHN MURRELL TIMMIS, of Birmingham, in the County of Warwick.
IMPROVEMENTS IN THE CONSTRUCTION OF PORTABLE COOKING OVENS, APPLICABLE
TO CAMP AND FIELD AND OTHER SUCH LIKE PURPOSES."
My Invention relates to improvements in portable cooking ovens chiefly adapted
to the ground, and employed for camp, field, and such like purposes, and consists
of the following arrangement of parts.
For the camp and field I employ one or more ovens or cooking chambers of any
forin or size most suitable to my requirement, composed of iron, wrought, cast, or
other metal; these chambers rest or find their bearing upon an arched base or
pedestal, having upon the sides of the said pedestal flanges in width sufficient to
form a solid bearing when upon the ground, the earth having a corresponding
recess to the arched base; and in this recess the fire is laid; this I designate the
fire hole. I arrange a closed fire box and bars at the one end of the ovens, and in
continuity to the recess above named is a passage or closed chamber, the same in
width as the ovens; through this the air and heat travels to the upper surface of
the oven, imparting a general heat to the said ovens, the smoke being emitted from
an ordinary funnel directly above the arched base where the air entered.
The advantages derivable from this Invention are as follows:-
1. The simplicity in construction, and being more readily fixed without sinking
in the earth, not so liable to disarrangement by wind or rain as those now
employed.
2. Economy in the consumption of fuel, and the cooking effected in a more
expeditious manner.
3. The recess or firehole being outside the tent (when applied to such purpose)
and the funnel also, no smoke or dirt can enter the tent as hitherto as been the
case.
And in order that this my said Invention may be properly understood I will
now proceed to describe the same with reference to the annexed Drawings.
This Invention relates, as before mentioned, to " Certain Improvements in the
Construction of Portable Cooking Ovens, Applicable to Camp and Field and other
such like Purposes.
Figure 1 on the accompanying Sheet of Drawings shews a front view in elevation;
Figure 2 is a longitudinal section in elevation; Figure 3, end elevation; Figure .4
and Figure 5, longitudinal section of parts detached; Figure 6, a plan view;
Figure 7, a front elevation; Figure 8, end view in elevation of same; Figure 9, a
longitudinal view; Figure 10, a cross section of same.
The same letters of reference indicate the same parts in the several Figures of
the Drawing.
"A" is the ground level; from "B" to "B" the same is intrenched; "A" is an
arched base or pedestal having upon each side the plates or flanges "b;" these find
their bearing upon the ground, while the conjoint plates "C" support the earth
in its formed position; "d," "d" are cooking chambers, and divisable for port-
ability only (see Figures 4, 5, the lower part approaching in form to the arched
base "A," and upon which they are fitted, having the hinged doors "e," "e," with
folding legs or stands "f" "f" thus forming tables when so required; at the end
of "d" is a space or closed chamber in continuity with the arched base "A;" this
chamber "g" extends to the upper part of the cooking chambers "d," "d"," and
to the funnel "h," which said funnel is temporarily affixed to "d" by means of
the form ""fitting into a corresponding recess "h2;" in the space above described
is a fire box and bars "" closed up when required by the hinged or jointed
door ";" in Figure 1 it is shewn closed, Figures 2 and 3 open; when "d" and
**

page_text: 〃
are arranged upon "A" in their respective positions they are secured by
means of the loose lid "j" and its angle edge "j" overlapping the same. Figure 6
shews this lid or cover removed from Figures 4 and 5.
It will be observed in this my said Invention when applied to camp or military
purposes, that I construct one portion of my apparatus, viz., (that part having the
funnel and firehole), outside the camp or tent, so that when fired at "K" it receives
a direct current or draught of air at "," carrying the heated air through the cham-
ber "g" at the end of "d" through the fire in the fire box "i" intensifying the
same, and passing uninterrupted through the upper chambers "g," "g," and finally
emited through the funnel "h" immediately above the fire hole ";" a general
heat is thus imparted to the said cooking chambers "d," "d¹."
Having now described and ascertained the nature of this my said Invention, and
the manner in which the same is or may be performed, I declare that what I
claim as new and desire to be secured to me by the hereinbefore in part recited
Letters Patent is, the new or improved combinations and arrangements of apparatus
for portable cooking ovens applicable to camp and field and other such like pur-
poses, substantially as hereinbefore described and shewn on the accompanying
Drawings or any mere modification thereof.
In witness whereof, I, the said John Murrell Timmis, have hereunto set my
hand and seal, this Twenty third day of December, in the year of our
Lord One thousand eight hundred and seventy nine.
Witness,
THOMAS KENDRICK.
JOHN MURRELL TIMMIS. (L.S.)