US1400329A - Fireplace - Google Patents

Description

J. H. STITES.

FIREPLACE.

1 APPLICATION FILED MAR.8.1920. Y 1,400,329, Patented Dec. 13, 1921.

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FIREPLACE.

APPLICATION FILED MAR. a, 1920.

Patented Dec. 13, 192L 2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

JAMES HLSTITES, 0F IETROIT, MICHIGAN.

FIREPLACE.

lApplication iled March 8, 1920. Serial No. 364,147.

'0 aZZ whom t may concern:

Be it known that I, JAMES H. Srrrns, a citizen of the United 'Sta-tes, residing at Detroit, in the county of Vayne and State of Michigan7 have invented certain; new and useful Improvements in Fireplaces, of which the following is a specification. .Y

This invention relates to lire-places, and has for its object a prepared fire-place throat and smoke chamber lining which acts as a guide to a mason in building the nre-place. A great many masons are unskilled in properly building a iire-placesoas to get the correct proportions,drafts, etc. This lining acts as a pattern to build a lire-place along the lines of the best practice.

In the drawings,- f

Figure` l is a front elevation of a nre-place constructed in accordance ywith my invention.

Fig. 2 is a vertical section of the prepared lining on the line 2-2 of Fig. 3.

. Fig. 3 is a vertical section of the lining taken from front to back.'

Fig 4L is a similar view showing the damper open.

Fig. 5 is a vertical section of the lire-place with my improved lining in place.

It is not broadly new to provide fire-place linings which in a measure form a guide for the mason in working in the hre-place, but so far as I am aware, the arrangement and construction of my prepared lining is new. In building a fire-place the lire brick a are usually pitched forwardly slightly at the back of the fireplace to vform what is called the hre-back. It is set to incline forward for the purpose of causing the flames to turn forward and throw the heat out into the room. At the top of this fire-back the fireplace throat leading up into the chimney begins and ordinarily the damper is seated at this juncture. This fire-back top, which forms the smoke shelf, should always have a definite relation with respect to the top of the opening through the front of the fire'- place. The smoke shelf should be somewhat removed above the front of the fire-place to give the best results and prevent the smoke getting' out into the room. The smoke shelf serves to turn back any down draft in the chimney and prevents such down draft blowing the smoke of the re back into the room. Furthermore, the damper should have a definite setting above the top of the opening through the front of the fire-place Specification of Letters Patent.

PatentedDec. 13, 1921.

but of progressively smaller cross section from bottom to top to form the smoke chamber so as to give a suitable taper and concentration of the products of combustion between the large fire-place and the narrow flue up the chimney. This lining body designated Z) is adapted to seat on the top of the fire-back 0., and is provided with turned-out flanges which may be sealed into the rough brick work to form seats. In order to properly establish the relation of the top of the opening in the front of the fire-place with the smokeshelf, an apron c forms a continuation of the front wall of the lining body and depends from the lining body. This apron establishes thel point at which the opening through the front of the lire-place should have its top. Where an arched opening is used, as shown in Fig. l, the top of the arch does not go high enough to expose this apron.

At the top of the lining body the flue CZ of the chimney begins and can be provided with the usual flue tile e Along. the front of the lining body is an arched angular strip f which serves to seat the arch of the rough brick work g and act as a guide to the rough brick mason in laying in the arch. The finished brick It are put in later. The depending apron c tells the mason just where is to be located the fire-place opening. Of course, the rough brick mason is given the desired dimensions of the fire-place opening and he builds his lire-back and the throat of the lire-place leading up into the flue the proper height so that when the lining body is placed thereupon the bottom of the apron c will be just the required distance above the hearth y' to give the proper depth to the fireplace opening, and the lining will seat upon the fire-back and establish the proper position of the smoke shelf with respect to the fire-place opening.

To the sides at the points 7s (Fig. 2) and to the front at the points Z, is fastened the sheet metal strip m that forms the two ends in back of the damper casing. n represents the damper proper which is at 0 j ournaled in the ends of the damper casing. The angular arm p has its upper arm portion secured tothe damper n. The lower arm portion is connected by a link Q with the cam-following arm 7^ which straddles the damper stem s. This Valve stem is rotatably mounted in the front Wall of the lining body and in'the back Wall of the damper casing. The cam t is fastened to the Valve-operating stem s with spacing sleeves u on either side of the cam. When the cam is turned, as shown in `Fig. 3, the high part of the cam strikes the top of the cam-following arm 9 and Closes the damper, as shown in this figure. When the damper-operating stein is turned through half a` revolution the high' part of the cam strikes the lower part of the cam-following arm and opens the valve, as shown in Fig. 4.

This cam-following arm 71 is Caused to pivot Y on the top and bottom edge of thel end of the right hand sleeve u shown in Figs. 3 and 4.

This orrns an eleotive yet easily constructed'and equippedl Valve casing and damperoperating gear.

' Some of the parts of the lining could be made in the form of castings, and hence I doV not Want to be limited to sheet metal except when so specified in the claims.

1What I claim is:

1. A fire-place throat and smoke chamber lining comprising a main metal inclosure having dimensions at the bottom approximating the horizontal cross section of the fire-place back of the opening and tapering toward the top to approximate` the dimensions of the flue opening, a subordinate.' inclosure secured in the Vmain inclosure at the Jr'ront and bottom to form the re-plaoe throat, the remaindei1 of the main inelosure thereby forming the smoke chamber, and a damperA supportedin the subordinate inolosureto regulate the opening through the said throat. Y

2. A tire-place throat and smoke chamber lining comprising a mainV metal inolosure having .dimensions at the` bottom approximating the horizontal cross section of the tire-place back of the opening and tapering toward the top to approximate the dimensions of the flue opening, a subordinate inyclosure secured in the main Vinclosure at the Jiront andv bottom to form the lire-place throat, the remainder of the'main inolos'ure thereby forming the smoke fchamber, a damper supported in the subordinate in- Closure to regulate the opening through the said throat, and an apron extending down from the front of the main inclosure below the bottom thereotto define the top of the fire-place opening.` j

`In testimony whereof I aix my signature.

s I-I. STITES.

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