US974280A - Stove. - Google Patents

Description

E. KENER, JR.

STOVB.

APPLIOATION FILED APB.. 20,1908.

Patented NOY.1,1910.

2 SHEETS-SHEET' 1.

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`UNITED STATES PATENT OFFICE.

EDWARD KENR, JR., 0F BUFFALO, NEW YORK, ASSIGNOR T0 BUFFALO CO-OPERATIVE STOVE COMPANY, OF BUFFALO, NEW YORK, A CORPORATION 0F NEW YORK.

STOVE.

Specicaton of Letters Patent.

Patented Nov. 1, 1910.

To ail whom 'it may concern:

Be it known that I, EDWARD KENER, J r., a citizen of the United States, residing at Bualo, in the county of Erie and State of New York, have invented a new and useful Improvement in Stoves, of which the following is a specification.

This invention relates more particularly to cooking ranges but the same is also applicable to other stoves, furnaces and heaters of various kinds.

It has special reference to stoves or heaters which' are provided with means for creating a down-draft through the fire box and grate in order to check the fire and also draw the dust into the flue-back or exit pipe.

The object of my invention is the provision of an improved downdraft device which is not liable to become clogged with soot and which does not cool the oven or otherwise impair the efficiency of the stove.

In the accompanying drawings consisting of 2 sheets: Figure 1 is a perspective view of a range embodying the invention. Fig. 2 is a longitudinal section thereof. Fig. 3 is a transverse section in line 3-3, Fig. 2. Fig. 4 is a fragmentary horizontal section in line ir-4, Fig. 2. Fig. 5 is a transverse vertical section in line 5-5, Fig. 4.

Similar letters of reference indicate corresponding parts throughout the several views.

A indicates the fire-box or chamber, B the grate, C the ash-pit and D the flue-back or box through which the products of combustion escape. This flue-back extends downwardly to a point below the level of the grate and communicates bythe usual passage cZ with the lower portion of the customary flue D1 which extends around the oven D2.

At that side of the stove at which the flueback is arranged, the ash pit is provided With a number of down-draft apertures or passages e preferably arranged immediately below the grate. These passages open into a substantially horizontal flue or housing F arranged on the outer side of the stove and leading to the lower portion of the flueback. This horizontal flue is closed at its front end, while its rear end is open and fitted against the contiguous side wall of the flue-back D and in communication with the latter at that point. At its inner side this flue F is preferably open and fitted against the rear wall of the stove so as to be closed at that side by the latter, the flue being secured in place by screws f or other suitable means, as shown in Fig. 4.

To the passages e is a plied a suitable damper g for shutting o or establishing communication between the ash pit and the flue-back. This damper is preferably of the sliding type and arranged within the iue F, as shown in Figs. 4 and 5. The operating rod or handle g1 of the damper extends through the closed front end of said fiue.

When it is desired to check the fire, the damper g is opened, as shown in the drawings, whereupon a descending or down-draft is created through the top-plate of the stove, the fire-chamber and the grate, and thence through the apertures e and the connectin flue F into the flue-back D, there being su icient leakage around the edges of the stove lids or covers to permit of this down-draft. It is well known that in stoves in which the fire is checked by admitting cold air above the fuel-bed, considerable ash is formed which interferes with the proper combustion of the fuel and causes Waste of the same. By checking the fire as above described, little or no ash is formed and the fire burns brightly notwithstanding that it is checked, thus completely consuming the gases and effecting a material saving in fuel. This improvement has the further advantage of rendering the stove more cleanly, as the down-draft has a tendency to draw the dust downward through the firechamber and thence through the passages e and flue F into the flue-back.

By arranging the dust and down-draft flue F in a substantially horizontal position and connecting it with the lower portion of the comparatively large flue-back or main exit flue D, as shown, no soot will accumulate in the dust .liuc and clog the passages e, for the reason that any soot dropping into the flue-back or detached from its Walls en'- ters the bottom portion of the oven flue D1 through the passage Z and is removed therefrom from time to time in a well known manner. ThisV horizontal arrangement of the flue F has the further advantage that it affords a short and direct passage for the draft from t-he ash pit to the bottom of the flluegback, thus obtaining a more satisfactory c ra t.

As shown, the oven-flue' D1 has no communication with the ash pit but is permanently disconnected therefrom. The relatively cool air in the ash pit therefore passes only through the external down-draft flue F when the damper g is opened, thus effectually preventing a reduction in the temperature of the oven under these conditions."

I-I indicates the usual plate applied to the front of the stove opposite the fire-chamber. This plate is preferably curved or bulged outward, and a descending hot-air space or iiue I is arranged between the same and the frontside of the fire-box, as shown in Fig 2. This hot-air flue is closed at its upperend z' and opens at its lower end into the top of the ash-pit. At or near its top, the plate H is provided with air-inletapertures y' which are controlled by a suitable damper or slide /fsl having a handle of ordinary construction for operating it. Upon opening this damper, the incoming cold air descends in the flue I where it becomes heated by contact with the hot front wall of the fire-chamber, and in this heated condition it ascends through the grate into the fire-chamber, thereby promoting combustion and completely consuming the fuel. In order to obtain astrong draft, the check-damper g is closed when the upper damper 701 is opened.

In addition to the upper damper k1, the plate II is preferably provided opposite the grate with a second slide damper f; for meet'- ing special draft conditions in some localities.

' Vhen a direct draft is desired for starting the fire quickly, this lower damper is opened, the same beingagain closed when the lire is well under way. This lower damper also permitsA a poker to be thrust through it into the lire-place, which latter is provided opposite the damper with an opening Z for this purpose.

I claim as my invention l. The combination of the fire chamber, the grate, the ash pit, an upright flue-back extending below the level of the grate, an oven, a Hue underneath the oven communicating with the flue-back but permanently disconnected from the ash pit, lsaid oven-flue being in communication with the re chamber, a substantially horizontal connecting flue communicating with the side of the ash pit and the side of the flue-back, said connect-ing flue being arranged on the outside of the stove, and means for controlling the passage of the dust and products of combustion through said connecting flue.

2. The combination of the re chamber, the grate, the flue-back extending below the level of the grate, the ash pit provided in its side adjacent to the flue-back with a downdraft passage, an oven, a flue underneath the oven communicating with the flue-back but permanently disconnected from the ash-pit, said oven-flue being in communication with the fire chamber, a substantially horizontal flue arranged on the outside of the stove and connecting the ash pit with the flue-back, said connecting flue being closed at its front end and communicating at its rear end with the side of the Hue-back and having an open, inner side fitted against the contiguous wall of the ash pit over said down-draft passage, and a damper applied to said passage within said connecting flue and having an operating device extending through the front end of said flue.

Vitness my hand this 16th *day of April, I

EDWARD KENER, JR.

Titnesses C. I?. GEYER, ANNA IIEIGIS.

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