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Publication numberUS601590 A
Publication typeGrant
Publication dateMar 29, 1898
Filing dateAug 10, 1897
Publication numberUS 601590 A, US 601590A, US-A-601590, US601590 A, US601590A
InventorsWilliam W. Rossman
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Stove or furnace
US 601590 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

{No Model.) i



No. 601,590. Patented Mar. 29, 1898.

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SPECIFICATION forming part of Letters Patent N 0. 601,590, dated. March 29, 1898.

I Application filed August 10, 1897. Serial No. 647,722. (No model.)

.To ctZZ whom it may concern.-

Be it known that I, WILLIAM W. RossMAN, a citizen of the United States, residing at Detroit, in the county of Becker and State of Minnesota, have invented certain new and useful Improvements in Stoves or Furnaces; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, 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 stoves and furnaces, and has particular reference to that class of stoves and furnaces that are used to heat the room or space in which they are located, and has for-its object the provision of an increased air-heating surface for the purpose of bringing into contact with the heat of the stove or furnace the greatest possible amount of air.

The invention consists, essentially, of a number of tubes or pipes arranged inside of the fire-box and smoke-chambers of the stove or furnace, along the sides thereof, and extend from the bottom of the stove up through the fire-box and smoke-chambers and through the top of the stove and are adapted to take air from the bottom, heat it, and throw it out at the top.

The invention further consists in the novel construction and arrangement of the several parts of the device, as hereinafter described, illustrated in the drawings, and more particularly pointed out in the claims hereunto appended.

In the drawings, Figure l is a perspective view of a stove having my improvement applied thereto and having a port-ionof the casing of said stove broken away to show the tubing in the fire-box and smoke-chambers. Fig. 2 is a longitudinal sectional view of Fig. 1. Fig. 3 is a rear end sectional view of the device, showing the arrangement of the tubes. Fig. 4 shows different forms of pipes or tubes that I use in stoves for the purpose of increasing the air-heating surface.

Referring to the drawings by letter, A represents the body of the stove or furnace, and A the legs or supports therefor, as shown.

removed, and A is the main fuel-door to the fire-box.

The upper part of the stove or furnace is divided into two or more smoke chambers or passages R and S, made by the partitions or plates, R and S, as shown. The entrance to the chamber S is at the rear end of the stove, the smoke and flame passing thereinto from the fire-box, and the entrance into the smokechamber It being at the front part of the stove, the flame and smoke passing from the chamber S into the chamber R, from whence it is conducted through the outletflue or chimney.

S is a doorin the front part of the stove or furnace leading into the chamber S and is for the purpose of removing soot and ashes therefrom, and R is a door in the rear of the stove and leads into the chamber R and is for the purpose of cleaning said chamber. The passages between the fire-box and chamber S and between chamber S and chamber R are afforded by reason of the plates S and R being shorter than the interior of the stove. Instead of these plates being short, as described, they may be-the full length of the interior of the stove and provided with suitable openings, as is evident.

O O C O are a number of tubes extending through said stove or furnace from the bottom to the top thereof, passing through the fire-box and the two or more smoke-chambers S and R, as is evident. The lower ends of these tubes or pipes extend a short distance below the bottom of the stove and are slightly flared, as shown at C, to induce a freer passage of the air thereinto, as is evident. The upper ends of these tubes may be flush with the top of the heater or stove or they may project a slight distance above, as desired. The tubes 0 G C 0 instead of being the same size in the smoke-chambers as in the fire-box are larger, as shown at 0 By enlarging the tubes or conduits in the chambers R and S a greater amount of heating-surface for heating the air in its passage through said tubes or conduits is obtained, and the enlargement of the tubes or conduits also serves to greatly diminish the space for the passage of the products of combustion through said chambers, so that the passage of said products will be necessarily slow or retarded, whereby a more complete mingling, and therefore combustion, of the escaping gases will be had, and thus the air in its passage through the tubes or conduits will be delivered into the room in a more highly-heated condition. It will be observed that the outlets of the tubes or conduits are somewhat contracted, which admits of a more rapid flow of air into the room and its circulation therein.

The fire having been started in the fire-box, the tubes 0 O therein will become heated and the contained air will rise and flow from the upper ends of the tubes, thus drawing into the lower ends cool air, which in turn is heated and thrown out into the room of space. By reason of the tubes passing through the smoke-chambers the heat therein will be partially absorbed and thrown out into the room instead of escaping through the chimney. Instead of the enlargement of the tubes 0 I mayhave the enlargements C 0 one in each smoke-chamber, as is evident.

Having thus described my invention, what I claim is- 1. In a stove or heater of the character described, the combination with the fire-box and the chambers S and R, of air tubes or conduits leading from the outside, near the bottom of the stove or heater, and passing up f and R and having contracted outlets,whereby the cold air taken in at or near the bottom of the stove is delivered into the room rapidly and in a highly-heated condition, as set forth. In testimony whereof I affix my signature in presence of two witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2475120 *Jul 25, 1944Jul 5, 1949 Young
US2479940 *Sep 28, 1944Aug 23, 1949Riley Stoker CorpMultiple tube air heating furnace
US4974579 *Sep 28, 1989Dec 4, 1990Rheem Manufacturing CompanyInduced draft, fuel-fired furnace apparatus having an improved, high efficiency heat exchanger
US5042453 *Jul 27, 1990Aug 27, 1991Rheem Manufacturing CompanyCompact, high efficiency heat exchanger for a fuel-fired forced air heating furnace
US7044123 *Mar 11, 2003May 16, 2006Angelo RigamontiHighly efficient heat exchanger and combustion chamber assembly for boilers and heated air generators
US8844472Dec 22, 2009Sep 30, 2014Lochinvar, LlcFire tube heater
US20040069295 *Mar 11, 2003Apr 15, 2004Angelo RigamontiHighly efficient heat exchanger and combustion chamber assembly for boilers and heated air generators
Cooperative ClassificationF24B7/025