US827963A - Heating stove or furnace. - Google Patents

Description

PATENTBD AUG. 7, 1906.-

R. L. COMMONS. HEATING STOVE 0R PURNACE.

l APPLIOATION FILED JUNE 2a. 1905.

/ wwf ROBERT L COMMONS, OF HARVEY, ILLINOIS.

v HEATING STOVE OR FURNACE.

Specification of Letters Patent.

Patented Aug. 7, 1906.

, Application filed June 23, 1905. Serial No. 266,598.

`To a/ZZ whom it may concern.:

Be it known that I, ROBERT L. COMMONS, a citizen of the United States, residing at Harvey, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Heating Stoves or Furnaces; and I do hereby declare that the fol- 'lowing is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part. of this specification.

This invention relates to improvements in heating stoves or furnaces and the invention consists in the matters hereinafter set forth, and more particularly pointed out in the appended claims.

Among the objects of the invention is to provide an exceedingly simple stove which can be economically manufactured and which possesses high heating efliciency.

In the drawings, Figure 1 is a .vertical section of a stove made in accordance with my y invention, taken on line 1 1 of Fig. 5. Fig. 2

is a topplan view thereof. Fig. 3 is a vertical section of the stove, taken on line 3 3 of Fig. 5. Fig. 4 is a transverse section taken on line 4 4 of Fig. 1. Fig. 5 is a transverse section taken on line 5 5 of Fig. 1. Fig. 6 is a top plan view, partially broken away, showing a modified form of the stove.

. As shown in the drawings, the main body of the stove consists of an outer shell A and an inner shell C. Within the lower part of the outer shell is formed a fire-pot A', provided with the usual grate A2, and A3 is a door closing the fire-pot. B designates the base of the stove, which incloses an ash-pan B', which is adapted to be Withdrawn from the side of the base.

In the construction shown in Fig. 1 the inner shell constitutes a combustion-chamber, which is closed at its top by an end wall c and is in open communication at its lower end with the fire-pot Aff. Between said inner and Outer shells are formed alternating smokeiiues D and air-passages E. Said alternating air-passages andsmoke-flues are separated by partitions a a, which extend from the lower end of the shell C to the top wall A4. of the stove. The smoke-fines are open at their lower ends to the fire-pot and communicate. at their upper ends with a central pipenipple A5, rising from the top of the stove through the medium of horizontal radiallydisposed conduits D Fig. 2, formed on the top wall of the stove. Preferably the smokeflues communicate at their upper ends with the interior of the shell C through openings d, so as to avoid a pocket or dead-gas space in the top of the inner shell and to promote combustion.

The air-passages E receive air through discharged from the upper ends thereof into the space surrounding the stove through yopenings e in the top wall of the stove. Preferably said air-passages E extend at their lower ends below the lower ends of the smokeceived through the inlet-openings e.' With this construction the cooler air near the iioor of the room containing the stove is drawn into the air-passages, thereby promoting the circulation of the air through said passages. Moreover, the extension of said passages into the fire-box in the manner described brings the said lower ends of the flues into intimate contact with the heat of the fire-box, thereby adding to the eiiiciency of the transmission of the heat to the rising air-currents. The walls of said air-passages between the shells are formed bythe partitions a a at their lateral sides and by the shells A' and C at their outer and inner sides, respectively. The alternate arrangement of the smoke-flues andA air-passages is an important feature of the construction, inasmuch as such constructiony brings the heated products of combustion in contact with three sides of the air-passages, through which the heat is transmitted to the air-currents rising upwardly through said passages.

Preferably the air-passages E are made smallest at their lower ends and gradually increase in `cross-sectional area toward their upper ends, while the smoke-fines D are reversely disposed, being made widest at their lower ends and narrowest at their upper ends. Such arrangement of the flues is clearly shown in Figs. 1 and 2 and will be understood from a comparison of Figs. 4 and 5, Fig. 5 illustrating the width of said passages at theirv lower ends and Fig. 4 illustrating the width thereof at their upper ends. Such variation .of the width of the smoke-lines and air-passages is effected by inclining the partitions toward and away from each other. The inclination of the side walls of the air-passages openings e at the lower ends thereof, and currents of air rise through the passages and are IOO IIO

from each other toward the upper ends oi the passages increases the width of the inner walls of said passages Jformed by said shell C, whereby the currents of air rising through the passages are brought in contact with gradually-increased extent of said inner walls, with the result of an increased transmission of heat to said rising air-currents. The construction described, while increasing the area of the inner walls of the passages against which the rising air-currents are brought into contact, has no effect to increase or diminish the area of the side walls of the passages constituted by said partitions a.

As herein shown, the stove is provided with three smoke-lues D and three air-passages E but the number thereof may be varied as desired. One of the air-passages E-to wit, that on the side of the stove adjacent to the door-is herein shown as made considerably wider than the other-two passages and is provided at its upper end with two dischargeopenings e', Fig.y 2. Said wide air-passage may also be provided at its lower end with two extensions located in the fire-box and communicating with the inlet air-openings e. This construction provides at the upper end of the stove a space to receive irons or other articles to be heated thereon. The door is located partially above the level of the lower end of the inner shell C, whereby that part of the shell infront of the upper part of the door constitutes a shield located between the upper-part of the door-opening and the fire-box. The space in front of said door-opening is separated from the wider air-passage by a horizontal partition d, Figs. l and'llf.A As a preferred construction the inner and outer shells and the partitions dividing the smokeiues and air-passages, as well as the top wall of the stove, are .made of an integral casting, the integral casting extending to the base of the stove and joined thereto by an offset joining-margin, as shown in Figs. 1 and 3. Baffle-bars d are shown as extending across the lower ends of the smoke-fines D to break up the currents of smoke upon entering said lues.

In Fig. 6 I have shown a modified form of the stove, wherein the fuel-opening A6 is formed in the top wall A4 of the stove and is closed by a suitable lid or cover A7. In this construction the pipe-nipple As is located at one side of the stove-top and communicates vwith the smoke-lues of the Jfurnace through conduits A9 A10, the rear one, A, of which opens directly into the pipe-nipple and the side ones, A10, of which extend laterally and rearwardly lto said nipple. Said conduits, as

well as, the pipe-nipple, are formed integral parts of the stove-top and operate in the same manner as do the conduits D of the previously-described construction to direct the smoke rising through the passages D to the pipe-nipple-A.

In some instances the stove herein shown may be used as the central furnace of a hotair heating system. In such use suitable airpipes may conduct the heated air from the passages E to the different rooms or apartments to be heated. For this purpose nipples are shown as rising from the stove-top around the discharge-openings e of said passages, to which the distributing-passages ymay be attached.

I claim as my inventionl. A stove comprising inner and outer shells between which are formed alternate, vertical smoke-fines and air-passages, a firebox formed in the lower part of the outer shell and communicatin@r with the lower ends `of the smoke-fines, and a pipe-nippleinto which the upper ends of the smoke-flues discharge, said air-passages receiving air at their lower ends through openings in the said outer shell and provided with dischargeopenings at their upper ends.

2. A stove comprising inner and outer shells between which are formed alternate, vertical smoke-lues and air-passages, a iirejbox formed in the lower part of the outer shell and communicating with the lower ends ,of the smoke-fines, and a pipe-nipple into which the upper ends of the smoke-rlues discharge, said air-passages receiving air at Etheir lower ends through openings in the said outer shell and provided with dischargesages being made narrow at their lower' ends and increasing in cross-sectional area toward their upper ends.

3. A stove comprising inner and outer yshells between which are Jformed alternate, lvertical smoke-fines and air-passages, a firebox formed in the lower part of the outer shell and communicating with the lower ends of the smoke-f lues, and a pipe-nipple into which the upper ends of the smoke-flues discharge, said air-passages receiving air at their lower ends through openings in the said outer shell and provided with dischargeopenings at their upper ends, said air-passages extending at their lower ends below the smoke-lues and into the iire-box.

4.- A stove comprising inner and outer shells `closed at their upper ends between which are Jformed alternate, vertical smokelues and air-passages, a fire-box Jformed in the lower end of the outer shell and communicating with the lower ends of the smokeflues, and a pipe-nipple into which the upper ends of the smoke-flues discharge, said airpassages receiving air at their lower ends through openings Jformed in said outer shell and provided with discharge-openings at their upper ends, said inner shell being provided near its upper ends with apertures vhich open into the upper ends of the smokeues.

5. A stove comprising inner and outer fopenings at their upper ends, said air-pas- IOO IIO

shells, a fire-box, tween and integral with said inner and outer shells and forming vertical said shells,the alternate assages constituting air-passages and smo e-lues, which latter communicate at their lower ends with said fire-box, and a pipe-nipple communicatin with the upper ends of said smoke-fines, sai air-passages receiving air at their lower ends through openings formed in said outer shell and provided with dischargeopenings at their upper ends.

6. A stove comprising inner and outer shells, a ire-box, partitions extending between and integral with said inner and outer shells and forming vertical passages between said shells, the alternate passages constituting air-passages and smoke-hues, which latter communicate at their lower ends with said fire-box, and a pipe-nipple communicating with the upper ends of said smoke-hues, said air-passages receiving air at their lower ends through openings formed in said outer shell and provided with discharge-openings at their upper ends, said partitions being inclined from the vertical in such manner that passages between partitions extending bel the air-passages are widest at their upper ends and the lower ends.

7. A stove comprising inner and outer shells between which are vertical smoke-lues and air-passages, a rebox formed in the lower part of the outer shell and communicating with the lower ends of the smol e-ilues, a pipe-nipple into which the upper ends of the smoke-lues discharge, said air-passages receiving air at their lower ends through openings in the said outer shell and provided with discharge-openin s at their upper ends, said air-passages eing made narrow at their lower ends and increasing in cross-sectional area toward their upper ends, and baffle-bars extending horizontally across the lower ends of said smoke-lues.

In testimony that I claim the foregoing as my invention I affix my signature, in presence'of two witnesses, this 17th day of June,

ROBERT L. COMIVIONS.

smoke-ilues are widest at their Witnesses:

WILLIAM L. HALL. G. R. N rLxINs.

provided alternate,

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