US117696A - Improvement in base-burning stoves - Google Patents

Description

UNITED STATES PATENT OEEICE.

JAMES W. TEFFT, OF DES MOINES, IOWA, ASSIGNOR TO HIMSELF, HENRY LE BOSQUE'I, AND PERRY O. RUDE, OF SAME PLAGE.

IMPROVEMENT IN BASE-BURNING STOVES.

To all whom it may concern:

Be it known that I, JAMES W. TEEFT, of Des Moines, in the county of Polk and State of Iowa, have invented a new and useful Improvement in Apparatus for Consuming Smoke and Gas, of which the following is a specification, reference being had to the accompanying drawing.

The invention relates to that class of devices for heating purposes which is intended to consume, in the process of combustion, the gaseous' products thereof, and is intended to be applicable to all varieties of heaters7 being, however, in the present instance, shown as incorporated in a stove adapted to ordinary heating and cooking. The object of the invention is to consume the products of the combustion, and to thus derive the greatest possible amount of heat from all combustible matter used or evolved in such use, as well as to obviate the obstruction of pipes and flues by the deposits of smoke or gas. The object of the invention is eiected'by means of a depending draught-chamber or conduit, having its base open and in the fire-chamber, supplying the fuel therein with a current of air, which, in descending the conduit, creates a draught, carrying with the flames such of the products of combustion as may have escaped into the upper parts of the device. An upright draught-chamber, of generally similar construction to that above, is placed in the rear an d opposite to it, and supplies the products of combustion in the combustionchamber with a draught of air drawn from below. By these means the flames and products of combustion are subjected to two distinct currents of air. To prevent the too rapid consumption of fuel a magazine or reservoir is provided above the base of the Erst-mentioned draught-chamber, filling the entire capacity of the device below the plate through which the fuel is charged, the outside of which reservoir is acted upon by cold air on all sides.

Figure lis a vertical central section from front to rear of a device exhibiting the elements of the invention. Fig. 2 is afront elevation of same with portions of the front broken out. Fig. 3 is a side elevation of sainewith portions of the side broken out. Fig. 4 is a plan view of same, the top of the stove being removed. Fig. 5 is a perspective of the interior of the same through the line. Fig. 6 is a plan view of the base ofsamc. Fig. 7 is a perspective of the base of the air or draughtchamber when made detachable. Fig. 8 is a view of the top of the air or draught-chamber when made detachable.

A in the accompanying drawing is the feeddoor through which the feed is supplied. B are the grate-doors, having grated or mica fronts. 'I is a sliding damper. B is the oven-door. D are mica windows. The bed of the device has 011e liuc, O, provided in front with the flue-stopperD and connected with the stove-pipe E. It has also two horizontal conduits, one on each side of the flue, connecting with the vertical conduit S. Above the bed of the stove, and between the front wall of the conduit S, the sides of lining of the stove, and the lower portion ofthe front thereof, is the ash-pit, provided with a drawer, G. Above the central portion of the ash-pit is placed the tilting grate H, forming the horizontal base of the fire-chamber. The inclined grate I is of the same length as the bed-grate, and may be either open or blank. The top of the inclined grate is opposite, but slightly above, the upper edge of the sliding damper T, and is inclined at such angle as to induce a gradual movement of the fuel, while in process of combustion, from the front toward the back of the stove. The rear surface ofthe lower portion of the grate I touches the front edge of the bed-grate H, the combined superfices of these two grates forming the bottom and front of the fire-chamber, which is provided at each end with the lining V. The back ofthe lire-chamber extends to a point about opposite the top of the grate I, and inclines from rear to front. A plate, K, is set or cast vertically in the stove, and extends from side to side thereof,

forming the front wall of the conduit S, and placed so that its upper parts come nearly in contact with the corresponding parts of the back of the nre-chamber. The upper edge of plate X is provided with a cap or curved edge, L, the lip of which projects toward the front, extending over the top edge of the back ofthe fire-chamber, leaving, however, a proper space between the same and the under surface of said edge. The cap or upper part of plate X may be made detachable, as shown at Fig. S, in which case this part consists of a curved piece of sheet metal, having one side longer than the other, and is provided near each end with ears, which project from the coneavity of the cap so that the upper edge of the fixed portion of the plate X can pass between the cars c and the interior of the back or long portion of the cap, the front edge of which is provided with an opening extending its entire length, except small portions on each end, which serve to support the front of the cap, Fig. 8, thus affording an opening above the top of the back of the fire-chamber M. rlhe space between the rear surface of the back ofthe {ire-chamber and the front surface of the plate forms the vertical draugmt-chamberY or air-conduit F, and is provided with the apertures Z, as shown. The plates N and O extend from one sideof Ythe. Ystom to the. otherna-ndare secured,

at a proper distance from the front and rear thereof, in such position that their upper edges are properly separated; but as the platesextend downward they approach each other until they are but slightly separated at their lower edges, which are opposite the horizontal center of the back of the fire-chamber. The lower edge of the plate extends over and slightly to the rear of the lower edge of the plate, leaving an interval between said portions of the said plates. rIhe space between the plates N and O forms the draught-chamber or depending air-conduit P, which is provided with the apertures, as shown. rIhe plate N has a series of holes, properly separated from each other, above and below the junction ofthe covering-plate Q. The lower por` tion or base of the draughtehamber maybe made detachable, as shown at Fig. 7, and when thus constructed consists of a metal trough, closed at each end, and provided with ears fitting between small uprights b on the upper edge ofthe lining V. The base, Fig. 7, has also projections at each side near its ends, which fit upon the outside of the lou e: part of the fixed portions ofthe plates N and 0. One of the lower edges of the base extends over the other, in a manner similar to that above described, in case when the base is a part of the plates N and O. The covering-plate Q, provided with the sliding-doors A, is placed at a proper distance below the front part of the top ofthe stove, and inclines from rear to front, so that the aperture between the sliding doors A, when open, is directly opposite the door A,

the upper edge of the covering-plate Q being secured to the exterior surface ofthe plate N; the lower edge to the interior of the front of the stove below the bottom of the door A. rlhe reservoir R extends the entire length of the firechamber M, being that portion ofthe interior of the stove between the line of combustion below, the covering-plate Q above, the front surface ot' plate K in the rear, and the interior surface of the front of the stove above the line of combustion and below the front edge of the coveringpl ate Q, in front.

rIhe fuel being placed in the lire-chamber and the process of combustion commenced, the reservoir can be lled, thus affording to the action of the fire a surface of fuel equal to the horizon- Y above.

tal plane between the plate and grate. The depending draught-chamber l? conveys a horizontal sheet of cold (and, after the combustion progresses sufficiently to heat the plates N and O, of warm) air to the surface of the burning fue] at the point S, and across the entire breadth of the rechamber from one side to the other, this draught being supplied directly with air through the apertures E', and indirectly through those at t in the door A, thence throughthe holes t, thus carrying oil' and into the combustion any gases that may escape from the doors A into the space through the apertures x, which thus carries off any gases that may be confined in the upper part of the reservoir. At the same time the vertical draughtehamber F supplies the products of the combustion at the point T with a similar sheet of air to that above mentioned, this chamber being supplied with air through the apertures Z. The draught-chambers P and F thus feed the combustion and the gaseous products thereof with oxygen, renderin g the same inflammable and causing their consumption. After passing above the top of plate X the heated air is drawn downward through the vertical conduit S, thence forward through the conduits C around the same into the flue C, and thence into the pipe at its rear end.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. rIhe draught-chamber IJ extending into the re-ch amber M and provided with a slot, S', across its whole end or base, as and for the purposes described and shown.

2. rlhe combination of the draught-chambers P and F, when constructed and arranged substantially as shown and specified.

3. The apertures t in the draught-chamber I), arranged relatively to the apertures in the door A, as and for. the purposes shown and described.

4. The detachable base of draught-chamber l), as shown at Fig. 7, when provided with a slot across its whole base or end.

5. The reservoir R, lling the entire capacity of the device below the plate A' and in front of the plane of the front surface ofthe chamber I), and being of greater depth at its base than at its top, substantially as shown and described.

6. The combination ofthe chambers I) and F, constructed and operating as shown and described, with the reservoir It, substantially as shown and described.

In testimony that I claim the foregoing improvements in apparatus Jfor consuming smoke and gas, as above described, I have hereunto set my hand and seal this 15th day of April, 1871.

J. IV. TEFF'I. [L. s]

Witnesses:

R. O. CHRISTY, A. C. BrnwnLL.

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