US97066A - Richard eaton - Google Patents

Description

2 Sheets -S he et 1. EATON & MARKS.

Cooking Siove.

Patented Nov. 23; 1869.:

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. Cooking Stove.

Patented Nv. 23, 1869.

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NPETERS, FNOTO-LITHOGRLF'HER, WASHINGTON, D C,

Ettt ttt Wire,

RICHARD EATON, or LoNDoN, ENGLAND, AND JOSEPH MARKS, OF BOS- TON, MASSACHUSETTS,

Letters Patent No. 97.066, dated November 23,1869.

COOKIN G--S1OVE.

The Schedule referred to in these Letters Patent and making part of the same.

To all t) whom these presents shall come:

Be it known that we, RICHARD EATON, of London, England, temporarily residing in Canada, and JOSEPH Mums, of Boston, in'the county of Sutt'olk, aml State ot'lllassachusetts, have invented certain new and use-, ful Improvements in Air-Heating Apparatus, as well as Goolv'iug-Apparatus aml do.hereb declare t'het'ollowing to be a full, clear, and exact description thereof, due reference being bad tothc accompmiyingdrawings, making partot' this specification, and in which Figure l is a perspective rcjn'cscntation,

Figure 2, a vertical and longitudinal section, and

Figure 3, a vertical and transverse section of cool;- ing-stove containing our improvements.

Our present invention may in some respects be considered in the lightof an improvetnenu upon that for which Letters Patentot'the United States were granted to one of us, viz, RICHARD lia'rox, on the'15th day of May.1866, although ourpresentinvention possesses characteristics which entitle it to an individuality and to independent application.

The characteristic feature in the heatingapparatus, as shown in the above-incntioned Letters Patent, conf sists in the employment of aspiral channel, disposed within a drum or cylinder, extending upward from the top of the stove, and surroumlingand enclosing an airpipe, which is open 'at top, and whose lower end c0mmunicates with an air-passage made on or in the top plate of the stove, such air-passage being governed bya damper suitably situated, and communicating with air-ducts formed in each corner of the front of the stove, aml which open within the stove, near to its bottom plate.

One result of this construction of parts, is to cause, the-air which supports combustion to be heated on its way to the fire, first by heat radiated from the smoke and hot gases, as they ascend the spiral or convolute channel, and next by heat imparted to it, as it goes through the air-passage on top of the stove, and down the air-ducts at the trout.

Another result is, thatthe air taken to support combustion, is drawn directly and immediately from the upper part of the apartment, instead of from the lower part, thus securing a ventilation of the apartment at the most important point.

Having thus premised the description of. our latter invention, by illustrating the principal point of the former invention, as shown in Letters Patent above mentioned, we would say that the main object sought in making this last-mentioned invention or improvement, is to ohtainmore perfect control of the ventilation ot'- the apartment, as well as more perfect combustion of the gases and unconsumed products of combustion arising from the fuel in the firepotof the apparatus.

Another object we have had in view in conducting the experiments which have ended in our present invention, has been to produce aunitbrm or cquable temperature of the oven of a cooking-apparatus, in order that the baking-qualities may be equally good in any part of it, and we accomplish this by admitting to the lower part of the oven, as occasion requires, a portion of oxygen which passes through the stove, and is heated on its way to the fire, as before premised, such heated oxygen coursing about the interior of the oven, and escaping, in excess, from the upper part thereof, thus producing perfect ventilation ot' the same, the advantage of admitting the highlysheated oxygen to the lower part of the oven being, as will be readily umlcrstood, to overcome the ditt'erence in temperature between the top and bottom of such oven, the former 'of which being much the highest in stoves now genc ally constriu-tcd.

In the drawings, to which allusion has before been made as accompanying .this specification, and which illustrate our invention- A denotes the top plate of a stove 'B, its oven 0, its fire-pot ;D, its ash-chamber; E, the direct smokeescape title; F F and G being the indirectsmoke-escape flue, and H, the general smoke-escaping funnel of the stove; the damper for controlling the passage of smoke through the last-mentioned fines} being shown at I; thegeneral arrangement of these constituent parts being substantially the same as in the generality of stoves now mam'tt'actured.

1n carrying out our presentimprovements, we appl y to the upper part of the rear of the top plate of the stove, an upright cylinder, J, the upper part of this cylinder being provided with a-register, k, and with its lower and open end communicating freely with an auxiliary air-passage, L, extending down the rear end of the stove, outside of and below the flues F F' and G, before mentioned, the said air-passage Lextending to the front of the. stove, and opening into the ash-pit- I), as represented, it being understood, and \vill' be seen by referring to the drawings, that communication between the hot--air passage L, and the flues l l and G, before reaching the tire, is entirely out ofl'.

The ash-pit D is provided with a door, M, for convenience of removing ashes, while the hearth of the stove, which is shown at N, is provided with a cover, 0, for allowing removal ot'the sitter 1).

The cover 0 is to be removed while a tire is being built in the stove, or.when great draught is required, such cover at all other times being closed, and oxygen for supporting combustion of fuel afterward being admitted only through the cylinder J before mentioned.

I would remark that air-spaces R are furnished at the frontand rear of the fire-pot, to which heated air from the passage L is admitted, the upper open- ,ings of these, spaces being governed by valves S T, for the purpose of allowing of the circulation of heated air through them and the fire, or of shutting off such circulation through them, and permitting the entire amount of heated air to pass upward through the lire, thence over the top of the oven and mingling withthe unronsnmed gases or other products of combustion.

A second and smaller cylinder, U, closed at the top, is disposed within the cylinder J, the lower and open end of such cylinder U communicating with the tines l F or G. 4

The adoption 'of this last-mentioned cylinder U,-

afibrds an increased radiating-sm-face 'for heating the current of oxygen passing down the cylinder J.

The above constitutes the mechanical construction of a stove embodying the principles embraced in our present improvements, its operation being being as follows, it being supposed that the tire-pot 0 contains fuel in a good state of ignition The heatfrom sucl1.fucl, passing out of the stove, either by the dirct flue E, or the indirect fine l! E and G, necessarily creates a downward draught of oxygen through the cylinder J and passage L, thence upward into and through the fuel within the fire-pot, the current of oxygen being, in such passage, highly heated by means before stated, and mingling with the gases given off from the fuel, allow the latter to be consumed, aml produce a large sheet of flame, which, expanding over the top of the oven, greatly increases its temperature, the waste products of combustion from the'union of the gases and oxygen, which are of very small quantity, passing ofi"throngh the fines E, 1* F, or G, in manner as before stated.

The employment of the air-spaces Q, R, and their controlling-valves S and T, admits of a. perfect control of the union of the oxygen and gases, amladds in a great degree to the effective working of the apparatus.

The employment of our invention, as before described, owlng to the perfect combustion of gases given off from the tire, allows of the use of bituminous coals in cooking-stoves, which has never before, so far as our knowledge extends, been accomplished. For the As before observed, th employlncntof the cylinder J, constituting, asitdoes,theair-inlet ('n'draughtto the stove, serves alike as a means of perfect ventilation to an apartment, as well as of partially heating oxygen for aiding the comlmstionof gases from the tire. The value ofthe admission of hot oxygen to the lower part of the oven, will at once beapparcnt to any intelligent observer.

Having thus described the nature, operation, and advantages of our present inventi on,what we believe to be novel and original with ourselves, and desire to secure by Letters Patent ofthe United States, is as follows:

Claims.

\Vc claim 1. The employment,. in combination 'with the oven and the tire-pot of a cooking-zipparatns, or in combination with any heating-apparatus, a chamber or passage by means of which oxygen is heated by the escaping gases as they are passing from the fire to the smoke-escape flue, and supplied to the lire, essentially in manner and operating as before explained.

2. In combination with the cylinder J, hereinbefore mentioned, the employment of the auxiliary heatingdrum U, substantially as before described.

3. The arrangement of the spaces Q R, and their 'alves S T, under-the arrangement hcreinbclore described, whereby a passage of oxygen is regulated and controlled for the purposebciore explained.

4. A stove composed in general of the cylinder J and, as a prolongation thereof, the air-passage L, the interior cylinder U, and the spaces Q It, with their valves S T, when such constituent parts are combined with a fire-pot, oven, smoke discharge fines, aml other adjuncts of a stoveas now generally constructed.

RICHARD EATON. JOSEPH MAltKb. \Vitucsscs Fann. Gcn'ris, Emmxn H. Huwms.

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