US495786A - Fireplace - Google Patents

Description

' (No Model.)

2 Sheets-Sheet 1.. W. R. DAWSON. FIREPLAGB.

Patented ApnlS, 1893.

(No Model.) 2 sheets-sheet 2.

W. R. DAWSON. PIREPLAUE.

No. 495,786. PatentedApr. 18, 1893.

Wfl/'61765366 Wwf? UNITED STATES PATENT OFFICE.

WILLIAM R. DAVSON, OF CHICAGO, ILLINOIS.

FIREPLACE.

SPECIFICATION forming part of Letters Patent No. 495,786, dated April 18, 1893.

Application led November l, 1892. Serial No. 450,603. (No model.)

.To all whom t may concern:

Be it known that I, WILLIAM R. DAwsoN, a citizen of the United States, residingat Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Fireplaces; andldo 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.

My invention relates to fire places, particularly to such as are adapted for the use of fuel gas, and consists in the various parts and arrangement of parts as hereinafter set forth whereby a column of air is carried over asurface heated by the flame and the heat of the latter is concentrated upon this surface by the use of a shield behind which the flame is thrown.

In the accompanying drawings, Figure 1 is a front elevation of my improved fire place. Fig. 2 is a -plan section on the line 2, 2, of Fig. l. Fig. 3 is a transverse vertical section on the line 3, 3, of Fig. l. Fig.` 4 is a plan sectionof a portion of the fire place on the level of the line 4, 4, of Fig. 3. Fig. 5 is a detail of the shield; and Fig. 6 shows details of the damper regulating device.

At A, the masonry of the fire place is sh own. It has no novel features but is built in the usual manner, with an opening for the re place proper.

A metal frame is shown at B, adapted to surround the opening in the masonry, and having a cross-bar B', joining its uprights and located a little above the floor. The frame B, serves -to support the other parts of the fire place. A sheet-metal casing, cornprising the wings c, c, is attached tothe sides of the frame and the reflector c', attached to the cross-bar B', and extending backwardly, and a fire-back C, ext-ending upwardly from the reflector c', between the wings c, c, and inclined forwardly and connected with crossbar b, extending between the uprights of the frame B, near their upper ends.

A gas burner D, consisting of a tube having a longitudinal slot along its upper side is located in the angle uniting the reflector c', and

I the wall G, to serve as an air llue.

lire-back C, and is fed by a gas pipe d, entering through the tire-back midway of the length of the burner. The gas pipe is provided with a shut-olf valve whose stem d', extends forwardly below the reector c', through the cross-bar B', and is provided at its outer end with a hand lever. The service pipe d, is provided with air openings between the valve and the burner so that the blue flame of a Bunsen burner is obtained. The front surface of the fire-back C, is covered with asbestus as shown at E, and the burner slot is so located that the sheet of flame from it impinges against the asbestos and is by it carried up a greater distance than it would otherwise reach.

A shield F, is located in front of and a short distance from the lire-back C, extending its entire width, and being fastened thereto by screws or bolts. This shield overlaps the top of the asbestus and the flame is carried up behind it. Space is left between the top of the shield and of the lire-back for the escape of the vapors from the flame.

A second casing, larger than, and inclosing that formed by the fire-back C, wings c, c, and reflector c', is also secured to the frame B. This casing consists of the wings g, g, extending backward] y from the uprights of the frame B, and reaching from their lower ends to the upper cross-bar of the frame; and of -the back wall G, connecting these wings, and being inclined forwardly toward the top, and attached to the upper cross-bar of the frame.

Space is left between the lire-back C, and This flue H, opens through the front of the fire place below the cross-bar B', and above the crossbar b. The air in the ilue being heated by contact with the hot tire-back, risesand as a result, a rapid circulation isset up. It is obvious that Vthe heating flue I-I, may be supplied with cool air from without the building if desired.

In the drawings, a hood h, is hung over the upper opening of the flue H. This is entirely optional and serves only to give finish to the dre-place. A simple fret work as isshown at h', covering the lower opening of the flue will serve as well.

A Ventilating flue I, is carried through the fire-back C, at a point behind the shield F,

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and through the back Wall G, to communicate with the chimney flue. This flue is closed by a damper J, which is connected by means of a link or rod j, with a crank arm L, fixed upon a spindle Z, journaled in a bracket K, projecting backwardly from the top of the frame B. The spindle Z, extends through the frame B, and carries at its outer end a lever M, whereby it is turned. Stop lugs le, k, are located upon the bracket K, to limit the movementof the crank arm L. The liue I, is not necessary to the proper action of the fire-place as a heater. The use of an air orBunsen burner supplemented by the action of the shield F, in carrying a new supply of oxygen to the flame makes the combustion complete, and there are no resulting odors. The line, however, secures in this lire-place all of the advantages of ventilation attaching to an ordinary open fire-place. y

An open or grated fender N, extends upwardly in front ofthe lower portion of the lireback C, so as to partially hide the burner D, and also to limit the direct radiation.

The functions of the shield F, are two-fold. Its less important office is to aid combustion by forming with the ireback a flue into which the flame is carried and where the rapidly ascending vapor creates a draft which draws in and mixes with the llame a new supply of oxygen; its principal oflice is to prolong or stretch out,as it were, the liame so as to covera greater expanse of the fire-back while at the same time, greatly hindering direct radiation and concentrating the heat upon the lire-back so that the airin passing through the flue H, is raised to a much higher temperature than could be secured without the use of such adevice.

I claim- 1. In agas-burning fire-place, the combination with an upwardly extending lire-back and with a burner lying across its lower portion and adapted to throw a flame over the surface of the fire-back, of a shield, F, located before the upper portion of and substantially parallel with the fire-hack and in close proximity thereto, whereby the llame will be lengthened and the heat concentrated upon the fire-back, and with a casing behind the fire-back and adapted to form therewith an air liue, substantially as described and for the purpose specified.

2. In a gas burning fire-place having an air heating flue located immediately behind the fire-back, the combination with the fire-back and with a burner adapted to throw a Iiame upwardly before it, of a shield F, located in front of the upper portion. of, substantially parallel with and in close proximity to the upper portion of the lire-back, whereby the flame is lengthened and the heat concentrated upon the tire-back, substantially as described and for the purpose specified.

3. In a gas burning lire-place, the combination with a lire-back adapted to form the front wall of an air heating flue, of a burner adaptedto spread a flame upwardly in front of the fire-back, a shield near to, and in front of the fire-back and adapted to extend the flame and concentrate the heat upon the tire back, a Ventilating flue extending through the ire back from behind the shield, and a damper for closing the Ventilating I'lue, substantially as described and for the purpose specified.

In testimony whereof I aftix my si gnature in presence of two witnesses.

WILLIAM R. DAWSON. iVitnesses:

DONALD MCINTYRE, FRANK P. ARMISTEAD.

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