PORTABLE BAKING OVEN.
N. PETERS. Phutn-Limngmpher, whingmn. D. C4
NiTEn STATES PATENT OFFICE.
ARMAND CHAEPEE, or LE MANS, FRANCE.
PE-CIFICATION forming part of Letters Patent No. 336,550, dated February 23, 1886.
Application filed July '29, 1835. Serial No. 172,927. (No'modokl Patented in France February 9, 1885, NOJGILQOS.
To all whom it may concern.-
Be it known that I, ARMAND CHAPPE, of the city of Le Mans, France, have invented an Improved Portable Baking-Oven for Domestic and other Use, -of which the following is a full, clear, and exact description, and for which I have obtained a patent in France for fifteen years, dated February 9, 1885, and numbered 166,908.
This invention relates to a portable baking and cooking oven, applicable, also, for other purposes; and it has for its object to provide an improved oven for domestic use for baking bread and other food in an economical manner. By this means the use of bakers bread made with ilonr usually containing a large admixture of other matters having inferior nutritive qualities may be avoided, and home-made bread may be brought within the reach of any one possessing one of these ovens. These ovens are of inexpensive construction, and may be made ot' any'size, according to particular requirements.
Reference is to be had to the accompanying drawings, and to the letters and figures marked thereon, wherein I have represented an example of a portable oven for domestic use.
Figure lis a half-sectional front elevation; Fig. 2, a longitudinal vertical section, and Fig. 3 a sectional half-plan, ofthe oven.
The apparatus consists of a furnace with charging-door, 'fire-bars, and ash-pan. This furnace is constructed to consume any kind of fuel-such as wood, coal, peat, &c.-and is corrugated or fiuted internally to avoid cracks produced by sudden cooling. IVithin the furnace-chamber is placed the oven, constructed of a corrugated or fluted bottom plate, A, and a dome, B, also corrugated or tinted, and provided with a mouth or opening closed by a door, which latter parts may be corrugated or iiuted internally or externally. The corrugation or iiuting of these various surfaces serves in all cases, not only only to prevent breakage by sudden cooling, but also to increase the heating-surface, and, consequently, the temperature of the oven by increasing its internal surface. The dome B rests on the bottom A, which is itself supported above the nre by brackets C, projecting inward from ribs or corrugations on the sides of the fire-place. The bottom A is strengthened by cross-ribs D at the under side, and supports, by means of ribs on the upper surface, an upper or false bottom, E, upon which are laid the bricks forming the hearth of the oven. Aspace or hot-air charnber, F, is thus left between the bottom A and the false bottom E, the edges of which only meet the apexes of the internal ribs or corrugations of the dome, thus leaving channels all round the hearth, by which the hot air contained in the hot-air chamber i, coinprised between the plates A and E, can escape and rise into the interior or baking space ofthe oven.
In order to prevent the entry of smoke into the interior of the oven, the lower edge of the dome B firs within a rising flange or rim around the bottom A, so as to make ajoint.
' The dome B is furnished with a handle or ring, I, for lifting it in and out of its place in the oven.
The dome B is inclosed bywan outer dome, G, also liuted or corrugated'internally, and fits on and makes a tight joint with the lower part of the furnace-chamber. This outer dome has for its object to cause the dames and gases from the furnace to play against the inner dome, B, of the oven proper, and thus to utilize to the utmost the heat of the fire.l The dome G is connected to a chimney for carrying off the products of combustion, which chimney may have a damper for regulating the draft. At the base of this chimney there is a downwardly-projeeting circular ri or flange, H, which, by narrowing the space between the inner and outer domes, retards the exit of the gases and brings them into close contact with the oven.
The whole oven is mounted upon cast-iron legs or feet, so as to bring the mouth of the` oven to a convenient height.
I do not claim an oven having an immovable dome, such as is shown in Patent No. 39,042, or in French Patent No. 12,509, of 1844.
I claim- In an oven, the combination of the plate ICO A, having peripheral flange and upright ribsl, The foregoing specification of my improved with the upper plate, E, resting on said ribs, 1 portable baking-oven for domestic and other removable inner dome, B,whieh is supported use signed by me this 9th day of July, 1885. [o by the plate A, and surrounded by the flange ARMAND CHAPPE.
5 ofthesame, outer dome, G, chmney,and lower Witnesses:
shown and described.
furnace, all arranged substantially as herein RoBT. M. HooPER,