US1681449A - Fireplace - Google Patents

Description

, 1,681,449 H. H. WALTERS I FIREPLACE Filed March 14, 1927 2 Sheets-Sheet 1 1 mic ag jTTOR/IE Patented Au 21, 192&

UNITED STATES HERBERT H. WALTERS, OFSYBACUSE NEW YORK.

FIREPLACE.

' Application mea amen 14, 1927. serial No. 115,240.

This invention relates to a hollow fireplace as a unita article of manufactureadapted to be inst lled in a recess in'a chimney to form an interior air chamber and an exterior combustion chamber and provided with one or more smoke pipes or conduits extending therethrou h to permit the passage of the products 0% combustion from the combustion chamber to the smoke flue without contact with the air in the air chamber'andalso provided with a cold air inlet'and a warm air outlet communicating with the air chamber whereby will be let to the interior of the room to The main object is to provide a fireplace of this character capable of being easily and quickly installed and substantially concealed within the chimney for utilizing the heat produced by the combustion of the fuel for maintainin a continuous circulation of warm air from t 1e exterior through the shell and to the interior of the room to be heated and at the same time to radiate the heat from the smoke pipes passing therethrough to the air in the Another object is\to, provide means tor opening and closing communication between the cold air inlet and the warm an outlet so that when no combustion is takin in the combustion chamber the communication between the inlet and outlet may be cut to prevent the entrance of cold air into the room.

Another object is to provide means for opening and closin communication between the smoke flue of .t e smoke and combustion chamber so that when the fire is out such communication may be closed to prevent the entrance of cold air from the chimney into the combustion chamberand thence into the room. Other objects and uses will be brought out in the followingdescriptiom In the drawings Figure 1 is a front elevation of a portion of a chimney and my improyed fireplace installed therein. f a

Figure 2 is a vertical sectional view taken in the plane of line 22, Figure 1.

Figure 3 is a horizontal sectional view taken in the plane of line 3.-3, Figure 2. I Figure 4 is an enlarged to plan of the upper portion of the detached replace showing the cold air entering said'chamber eated and delivered throu h the out-- e heated.

place a a part of the top wall broken away and untl erlying flues of the smoke conduits in seclon. I

Figure 5 is a sectional view taken in the plane of line 5-5, Figure 4. a

Figure 6 is atransverse vertical sectional view taken in the'plane ofline 66, Figure 5.

:In order that this invention may be clearly understood I have shown a portion of a chimney 1' as enlarged at 2-- and provided with a recess --3 in the enlarged portion for receiving the hollow fireplace prescntlv described, said chimney being provided with a suitable smoke flue 4- communicating with the recess through a downwardly flaring enlargement -5, the lower wall of; which is preferably made of concrete with a concave upper surface 6 at about the level of the top of the fire lace for deflecting any down draft current oi air containing more or less smoke content upwardly thereby reducing the liabilit of passage of thedown draft currents into t e open front side of the recess;

The chimney proper may be made wholly or in part of brick orv other suitable refractory material and is provided in its lower front side with an opening -7- communicating with the recess -3 and extending from the floor tiling as --8- tea level a I short distance below the top portion of the hollow fireplace.

The fireplace forming the subject matter of this invention consists in this instance, of a hollow sheet metal shell comprising a hollow u rifiht back portion -9, opposite upright 0 ow portions -10' projecting forwardly in in opposite upright edges of the back portion an a substantially horizontal hollow top portion -11- extendin forwardly from the upper end of the bac ortion -9- and between the upper ends of the i side portions -10--thereby,forming a combustion chamber 12 and an air chamber -13 which is continuous from top to bottom of the'back portion -9--, side portions The lower en of the hollow back portion '9 is provided with a horizontal rearward extension 14 having a cold air inlet "passage 15' thereb and a -grill plate -16 across the rear end of the passage -15.-

The to portion 11 extends forwardly beyond t e front faces of the side'portions 10 f nd is provided with a grill plate 7 -17 across the front face thereof to allow the warm air to pass into. the room in which the fireplace is located as it is heated in transit from the cold air inlet to the warm air outlet as 18 in the horizontal top ortion -11.

. T e brickwork of the chimney preferably extends across the back and opposite sides of the sheet metal fireplace and across the front faces of the sides -10- and also surrounds the top, bottom and sides of the forward end of the upper horizontal portion -11 and the horizontal rearward extension 14-- as shown more clearl in Figure 2 so that the only portions of tlie fireplace which are exposed are the grill plates 16 and 17- and the back and side portions 9 and 10- just at the rear of the front wall of the chimney in which the fuel opening -7 is formed.

The top and bottom walls of the upper horizontal portion 11- of the fireplace are provided with vertically alined apertures in which are ti htly fitted the lower and upper ends of suitable smoke conduits 19-- which extend across the adjacent portion of the air chamber for conducting the products of combustion from the combustion chamber --12- through the top portion -11-- and into the smoke flue 5 of the chimney, the joints between the smoke conduits and lower and upper walls of the to portion 11 being gas-tight to prevent t e passage of any part of the products of combustion from the com- 1 bustion chamber into the air chamber.

A deflector plate 20 is secured to the top wall of the horizontal portion 11- to extend u wardly and rearwardly over the upper en s of the smoke conduits 19- and thereby to assist in deflecting the products of combustion escaping throu h said smoke conduits into the smoke flue o the chimney, the rear edge of the deflector late terminating approximately in the vertlcal plane of the axes of said smoke conduits.

A damper 21 is hin ed at 22- to the top wall of the horizonta portion 11'to swing to and from a position across the upper ends of the smoke conduits -19 and into and out of engagement with the upper rear edge of the de ector plate -20 for opening an closing communication between said conduits andthe main smoke flue of the chimney and thereby to not only regulate the draft to the combustion chamber but also to prevent back draft from the main smoke flue -4-- through the smoke conduits -19- and into 7 the combustion chamber and thence out into the room through the fuel 0 ening Any suitable means may provided for operating the damper 21, said means conslsting, in this instance, of a crank arm 23-' secured to the dam er --21 near one end thereof and pivotal y connected to the rear end of a forwardly and rearwardly movable operating rod-24 which extends through an aperture -25 in the front grill plate 17- and is provided atits front end with a handle 26 by which it may be manipulated.

In the use of this hollow sheet metal fireplace it is desirable to provide means for preventing the passage of cold air from the inlet 15 through the air chamber and thence through the outlet 18 particularly when there is no fire in the combustion chamber and for this purpose is provided a pair of dampers -27 pivoted at -28 to the inner faces of the lower and upper walls of the horizontal portion -11 so as to extend toward each other between the smoke conduits 19 and front grill plate --17- so that when closed they extend substantially the entire distance between the lower and upper walls of said horizontal portion -1land from end to end thereof.

These dampers 27 are connected by links 29 to the rod 24 so that when the rod is pulled forwardly to open the damper -21- the dampers 27- will also be opened and reversely the losing of the damper 21 by the rod 4- will also close the dampers 27 thereby preventing back draft from the main flue 4 of the chimney into the combustion chamber and also preventing the passage of cold air from the outside of thev fire lace into the room in which the fireplace is ocated through the air chamber of said fireplace.

Operation.

The fuel to be burned is placed through the opening -7-into the combustion chamber 12 in an suitable manner and when igcited the ro ucts of combustion will impinge against t e inner walls of the back portion -9-- and side portions 10 and also against the lower side of the upper horizontal portion --11 and will then pass out through the smoke conduits 19 into the mam smoke flue of the chimney when the damper -21 is opened.

The air in the air chamber as 13 of the hollow sheet metal fireplace will then be heated by the products of combustion and will cause a circulation of the cold air from the inlet -15 upwardly through the chamber -9- and thence outwardly through the grill plate l7 into the room to be heated, it being understood that when combustion is taking place in the combustion chamber, the dampers -21-- and -27 will be 0 en.

The inner walls of the sheet metal eplace are co-extensive with. the area of the combustion chamber and thereb all of the heat developed in said combustion chamber will be transferred through the inner walls of the sheet metal shell to the air in the chamber 9 throughout the area of said walls thereby causing an upward circulation of the fill cold air in the bottom of the chamber -9- to pass upwardly and outwardly through the grill -17.

What I claim is 1. The combination with a chimney having a recess for receiving a fireplace and provided with a smoke flue leading from the top of the recess, of an open fireplace comprising a hollow metal shell having upright back and side portions and a substantially horizontal top portion, said shell having a cold air inlet near the bottom of the back portion and a warm air outlet in the front end of the horizontal top portion, smoke flues extending vertically through the horizontal top portion some distance from the front and rear ends thereof, a deflector plate secured to the top wall of the horizontal portion of the shell in front of the smoke fines and extending upwardly and rearwardly over the central portions of the smoke flues, a damper hinged to said top wall at the rear of the-smoke flues to swing forwardly and rearwardly into an out of engagement with the upper edge of the deflector plate, a damper in said horizontal top portion between the smoke flues and Warm air outlet, and means operable at will for simultaneously opening said dampers.

2. The combination with a chimney having horizontal portion of the shell in front of the smoke flues and extending upwardly and rearwardly over the central portions of the smoke fines, a damper hinged to said top wall at the rear of the smoke. flues to swing forwardly and rearwardly into and out of engagement with the upper edge of the deflector plate, a

damper composed of sections hinged to the lower and upper walls of the horizontal top portion to swing forwardly and rearwardly,

"and means for operating said dampers.

In witness whereof I have hereunto set my 7 hand, this 10 day of February,.1927.-

HER-BERT H. WALTERS.

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