US16768A - Back plate for fireplaces and crates - Google Patents
Back plate for fireplaces and crates Download PDFInfo
- Publication number
- US16768A US16768A US16768DA US16768A US 16768 A US16768 A US 16768A US 16768D A US16768D A US 16768DA US 16768 A US16768 A US 16768A
- Authority
- US
- United States
- Prior art keywords
- back plate
- bars
- fireplaces
- crates
- chimney
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000779 smoke Substances 0.000 description 8
- 210000003800 Pharynx Anatomy 0.000 description 6
- 206010022000 Influenza Diseases 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 230000002349 favourable Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
Definitions
- My invention consists in arranging a grating, the bars of which are angular, in the throat of a chimney in such manner as to cause the smoke to pass through it, the peculiar form and arrangement of the bars being such as to arrest much of the heat, that would otherwise pass up the chimney, and radiate it into the room.
- This grating may be made of either wrought or cast-metal, but I prefer to make it of cast-iron, and of not less than an inch and a half in thickness, and it may be made with lugs to rest on the sides of the chimney.
- This grating should be so placed that it will incline forward at an angle of about 45; but it should rest on the lugs in such manner that it can turn on them, as on trunnions, to be thrown back, when necessary, for the purpose of cleaning the chimney, regulating the draft, etc.
- the bars of this grating are of uniform width and depth with parallel sides and flat backs, while the face of each of them is an angular ridge, formed by the junction of two planes at an, angle of about 90.
- the sides of the bar are perpendicular to its back; and the bars are so placed as to leave oblong spaces between their adjacent sides equal to about one-quarter of the width of the back of the bars except at each end, where they are joined.
- the face of the grating thus constructed, consists of a series of angular ridges and furrows, with a slot in the bottom of each furrow.
- This form and arrangement of the bars is such as to secure the most effectual interception of the heat at the entrance of the chimney, consistently with the most effectual radiation of that intercepted heat into the room.
- the area of the face of the grate is greatly increased by the ridges, yet, nevertheless, it occupies a position relative to the fire-place, and to the room, highly favorable to the radiation of the heat into the lower part of the room, where it is most required.
- the elongated openings between the bars also operate advantageously in distributing the smoke equally, over the whole surface of the bars, in its passage through the grating. These openings should equal about one-fifth of the area of the flue.
- This back plate will also perform the functions of a damper to regulate the draft, by varying the area of the opening of the throat. It is obvious that it can readily be adapted and applied to any form of chimney.
- the back-plate for fire-places and grates constructed with the series of angular ridges, furrows, and slots, in the manner and for the purposes herein described.
Description
UNITED STATES PATENT OFFICE.
FOUNTAIN E. PITTS,
OF NASHVILLE, TENNESSEE.
BACK PLATE FOR FIREPLACES AND GRATES.
Specification of Letters Patent No. 16,768, dated March 3, 1857.
To all whom it may concern Be it known that I, FOUNTAIN E. Prr'rs, of Nashville, in the county of Davidson and State of Tennessee, have invented a new and useful Back Plate for Fireplaces and Grates, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which make part of this specification, and in which Figure 1 represents a view in perspective of my improved back plate. Fig. 2, repre sents a section through the same at the line a; m of Fig. 1, and Fig. 3, represents a section at the line 00 00 of Fig. 1.
My invention consists in arranging a grating, the bars of which are angular, in the throat of a chimney in such manner as to cause the smoke to pass through it, the peculiar form and arrangement of the bars being such as to arrest much of the heat, that would otherwise pass up the chimney, and radiate it into the room. This grating may be made of either wrought or cast-metal, but I prefer to make it of cast-iron, and of not less than an inch and a half in thickness, and it may be made with lugs to rest on the sides of the chimney. This grating should be so placed that it will incline forward at an angle of about 45; but it should rest on the lugs in such manner that it can turn on them, as on trunnions, to be thrown back, when necessary, for the purpose of cleaning the chimney, regulating the draft, etc. The bars of this grating are of uniform width and depth with parallel sides and flat backs, while the face of each of them is an angular ridge, formed by the junction of two planes at an, angle of about 90. The sides of the bar are perpendicular to its back; and the bars are so placed as to leave oblong spaces between their adjacent sides equal to about one-quarter of the width of the back of the bars except at each end, where they are joined. The face of the grating, thus constructed, consists of a series of angular ridges and furrows, with a slot in the bottom of each furrow. This form and arrangement of the bars is such as to secure the most effectual interception of the heat at the entrance of the chimney, consistently with the most effectual radiation of that intercepted heat into the room. The broad converging surfaces of the grate-bars, over which the smoke has to pass before it can enter the chimney through the narrow slots, operates to strain, as it were, the heat out of the smoke.
The area of the face of the grate is greatly increased by the ridges, yet, nevertheless, it occupies a position relative to the fire-place, and to the room, highly favorable to the radiation of the heat into the lower part of the room, where it is most required. The elongated openings between the bars also operate advantageously in distributing the smoke equally, over the whole surface of the bars, in its passage through the grating. These openings should equal about one-fifth of the area of the flue. This back plate will also perform the functions of a damper to regulate the draft, by varying the area of the opening of the throat. It is obvious that it can readily be adapted and applied to any form of chimney.
I am aware that grated, reticulated and perforated plates (the last being described in the patent granted to Jacob Cohen April 15th, 1850) have heretofore been used in the throats of fire-places or flues of stoves; also, that a fire-back, composed of metallic plates, arranged like the slats of a window-blind, is described in the patent, for a cookingstove, granted to G. Smith and H. Brown May 15th, 1847. I claim none of these. I am also aware that it has been proposed to place a grate, with angular bars similar to mine, in the flues of cooking ranges. I do not claim the plate so placed. But
What I do claim as my invention and desire to secure by Letters Patent, is
The back-plate for fire-places and grates, constructed with the series of angular ridges, furrows, and slots, in the manner and for the purposes herein described.
In testimony whereof, I have hereunto subscribed my name.
FOUNTAIN E. PITTS.
In presence of- HENRY BALDWIN, J r., A. E. H. JoHNsoN.
Publications (1)
Publication Number | Publication Date |
---|---|
US16768A true US16768A (en) | 1857-03-03 |
Family
ID=2078678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16768D Expired - Lifetime US16768A (en) | Back plate for fireplaces and crates |
Country Status (1)
Country | Link |
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US (1) | US16768A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030120208A1 (en) * | 2001-11-08 | 2003-06-26 | Houser Russell A. | Rapid exchange catheter with stent deployment, therapeutic infusion, and lesion sampling features |
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0
- US US16768D patent/US16768A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030120208A1 (en) * | 2001-11-08 | 2003-06-26 | Houser Russell A. | Rapid exchange catheter with stent deployment, therapeutic infusion, and lesion sampling features |
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