US212379A - Improvement in cooking-stoves - Google Patents

Description

Gr. H. HESVS.

.l Cooking-Stove. Ne. 212,379. Patented Feb. 18', 1879.

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UNITED STATES FFICE.

IMPROVEMENT IN COOKING-STOVES.

Specification forming part of Letters Patent No. 212,379, dated February 18,1879 application filed July 22, 1878.

.To all whom it may ooozcemf .Be it known that I, GEORGE H. Hess, ot the eityof Chicago and State of Illinois, have invented certain new and useful Improvements in Cooking-Stoves, of which the following, taken together with the accompanying drawescape-flue is located below the top of the re# pot, or in the lower part of the chamber, to draw orf the cooler portion of the smoke and hot air therein contained, leaving` the hotter portion to part with its'heat in cooking or heating before passing into the flue. Some of the devices herein described and claimed are, however, applicable to other stoves.

The objects and nature of my several irnprovements will appear in the further description herein given.

In the drawings, Figure l is a vertical median longitudinal section ot a cooking-stove having a smoke-chamber and other features as above brieiiy described, showing the general relation of its parts, and a water back-applied therein. Fig. 2 is a perspective view of a supporting-plate, by which the rire-pot is sustained and partly contned. Fig. 3 is a plan view of a fire-pot specially designed for burning wood in a stove of the description given; and Fig. 4 shows the wood-lire pot in its relation to the sustaining-plate, (separately shown in Fig. 3.)

A is the bottom plate, B the middle plate, and C the top plate, of a stove havin g a smokechamber, and, generally, of the character referred to above. In this stove, D is a warmingchamber, heated by several contiguous parts. E is the smoke-chamber, continuous with the space over the re-pot F, and discharging through a flue, J leading from its lower portion. l) is a cast plate, with its foot resting upon the plate B, and held by the flan ge a. P has a vertical and a horizontal part, the latter extending forward to the chamberwall and provided with and aperture, through which depends the tire-pot, sustained by the marginal flan ge a upon the latter. The plate P has also upon its horizontal portion a vertical marginal ange, P', which rises to the top plate @,and preferably conformsto the shape of the chamber-walls, in this case rounded at the ends. This vertical flange serves to protect the inner wall, fw', from the heat from the tire-pot, and also to stiften the part of the plate P that immediately supports said lire-pot. A considerable space surrounds the re-pot beneath the plate I), in which the air is much heated. Perforations b b are made in the tirepot near its top, for the admission ot' this air above the burning fuel, with the effect sometimes of promoting more perfect combustion.

The grate being suspended wholly below the tire-pot, it may be laterally vibrated to open a considerable space at either side thereof, and at the same time the whole is of such size that when centrally placed it may be tilted within the re-pot.

W, Fig. 1, represents, in transverse section, awater-back, consisting of sinuous pipe located behind the plate P and across the smoke-chamber E.- It may, however, be of any desired form and located elsewhere in the smoke-space below the level of the top of the fire-pot.

The effect of a water-back upon the interior temperature of any cook-stove to which it is applied is principally felt at the back lids wherever the water-back is placed.. In an ordinary cook-stove having a shallow iue, and consequently a rapid draft beneath the back lids, the eii'ect to lower the temperature is often very marked. On the other hand, when applied in a stove having the deep smoke-reservoir, in which the velocity of the smoke and air current is slight, the e'ect ot' a water-back upon the temperature at the lids above the reservoir is not appreciable, but is felt almost wholly at `the bottom. The reason is obvious: The smoke and heated air that passes in vcontact with the water-pipes and is cooled by them immediately takes its place at the bottom of the chamber, and that not thus cooled at the top. rlhe cool smoke in the reservoir is cooler, and, perhaps, its volume is greater, by reason of the waterback; but the smoke at the lids is not less hot because of it.

It will be desirable to so place the waterback in the stove that there need be no intermingling or crossing of currents of hot and cooled smoke and air in their respective courses to the topandbottom ofthe reservoir.

In the cooking-stove illustrated all the external vertical Walls are of sheet-iron. They are therefore very liable to be bruised and disgured. To afford them proper protection the Y middle plate, B, projects slightly, and the top plate, G, projects considerably, (say three to tive inches,) on all sides of the stove.

In a stove constructed on this principle the size of the stove proper, to accomplish a given result, is greatly less th an in one of ordinary construction. The need for top space for cookingvessels, Ste., however, remains the same, wherefore the extended top plate, herein described as protecting the sheet-iron walls, is useful, and is required to accommodate the vessels that may be advantageously employed on the stove.

In Fig. 3 is shown a form of iire-pot adapted to hold Wood instead of coal. It is oblong in shape, and extends backward through and bevond the vertical portion of plate P, as seen in Fig. 4. This fire-pot, like that for coal, is supported from a marginal flan ge, a. It also has vertical ian ges g on its outside, connected, preferably, by a transverse lange across tlie bottom, which rest against the plate P in front,

and prevent movement of the fire-pot back-V ward.

Plates P, adapted, respectively, to wood and coal re pots, are interchangeable in the same stove, being simply set in the foot-flanges a, and resting against the inner front wall of the stove. y

Having thus described my invention, what I claim, and desire to secure by Letters Patent, :is-

1. In a stove provided with an air-reservoir, E, the plate P, having the vertical and horizontal portions, as set forth, and an aperture for a rire-pot, arranged to separate the chamber E from the lateral space about the tire-pot, substantially as described.

2. The vertical Wall-protecting flan ge Pl on the margin of the horizontal portion ot' plate P, extending on three sides of the repot, substantially as shown and described.

3. The combination, in the stove described, ot' the plate P and the flange n on the middle stove-plate, B, whereby the plate P, resting against the front wall, is supported in place, substantially as set forth.

,4. In combination with the walls of a stove, the plate P, having a vertical and horizontal portion, to separate the hre-chamber from the smokeehamber E, and the horizontal portion provided with au orice to receive the rim of the iire-pot F, as set forth.

GEO. H. HESS.

Witnesses:

Jnssn' 00X, Jr., M. E. DAYTON.

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