US814949A

US814949A - Boiler-furnace.

Info

Publication number: US814949A
Application number: US17867203A
Authority: US
Inventors: Ellis F Edgar
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-10-27
Filing date: 1903-10-27
Publication date: 1906-03-13
Anticipated expiration: 1923-03-13

Description

N0.'s14 ,9 49.- PATENT'EDY-MARH, 1906.

'B.F.EDGAR. BOILER FURNACE.

APPLICATION FILED OCT. 27. 1903.

' 2 SHEETS-SHEET 1.

- I I w M 5 No. 814,949; PATENTED MAR. 13, 1906.

' E. F. EDGAR. k

BOILER FURNACE.

APPLICATION FILED OCT. 27. 1903.

2 SHEETS-SHEET 2,

v UNITED STATES PATENT OFFICE To all whom it may concern:

Be it known that I, ELLIS F. EDGAR, a citi-r zen of theUnited States, and a resident of Woodbrid e, in the county of Middlesex and State of nac'es, of which the following is a specification. Figure 1 is a front elevation of a boiler, part in full and'part in section, embodying my invention. Fi 2 is a detail of eight pockets.

' section view of one of the fire-bricks.

part-in section, embodying my invention.

with fire-brie liningremoved. Fig. is a i 4 is a back view of one of the fire-bricks, s W- ing dead-air space in same. Fig. .5 is a section view of a red-brick casing, showing fireclay lining attached to the'same; Fig. 6, a frontelevation of a boiler, part in full and I had inview the following-objects in designing this style of boiler-furnace, namely: an outside casin constructed air-tight, having pockets on t i e furnace side of the same for the reception of a fire-brick lining com-' posed of a special brick or block made and arranged in such a manner that the expansion and contraction of the same is provided for in every twelve inches each way, thereby preventing the bulging and crackingof the outside casing, causing leaks for the admission of a1r.

' 1 is the outside casing; 2, projection from casing forming pocket 3', fire-brick lining; .4, pocket shown in Fig. 2 with fire-brick re-- moved 5, threaded boss for securing anchorbolt; 6, anchor-bolt.

The outside casing 1v (shown in Fig. 1) is composed ofcast-iron, and the projections 2, forming the ockets, I prefer to have cast on, as shown in ig. 1, being cheaper and makes the casing stronger, although I might attach the pocket to the casing in some other form..

The outside'casing 1 (shown in Fig. 5) is comosed preferably, of red-clay bricks or blocks, but'might be made of cement or any suitable material capable of supportin the fire-brick linin 3, as it is intended that t 's'outside casing s all be protected from extreme heat by the-'firc-brick lining 3, which iscomposed of a" s ecial-made brick or block of a suitable firec ay mixture that will withstand the temperature of the furnace and protect the outside iss in Fig. 1, an the fire-clay lining 3 I would I =Speoification of Letters Patent. Application filed October 27,1903. SerialNo. 178,672-

ew Jersey, have invented certain, new and useful Improvements lIl Boiler-Fur- Batented march 13', 1,906)

make with a large percentage of sawdust or any'material that would be consumed while burning the fire-clay bricks or blocks. This would cause recesses forming dead-air spaces, which aid toward making said blocks a nonconductor of heat, thereby protecting the outside casing and preventing loss of heat by. radiation. These fire-clay blocks 3 are secured in the outside casing 1 in such a manner as to leave a slight clearance between the sides of the pocket and the brick to provide for the expansion when the brick becomes heated. There is also a clearance between these bricks or blocks 3 where they project beyond the pockets. (Shown more clearly ,in Fig. 5.)

"This clearance is made of such a size that when the bricks or blocks become heated the expansion will not be sufficient to make them press against each other, thereb bulging and cracking the-outide casing. en sawdust or other similar aterial is used to form air cells or recesses in blocks 3, I might on the face of these .blocks'for about two inches omit such material and make them solid, as the face of these blocks on the furnace'side would radiate the heat back to the tubes of the boiler better than if the blocks contained these air-' cells all the way to the surface on the furnace side. I do not confine myself to securing these blocks 3 to the outside casing by the pocket system only, as I might secure these blocks 3 to the outside casing by means of the anchor-bolt alone or in conjunction with other means. The point that is essential is to have them secured to the casing in such a way as to provide a space between said blocks.

Having described my invention, what I claim as new, and desire to secure by Letters -Patent, is-

1. In a boiler-furnacethecombination of an outer casing with projections on the furnace side and non-combustible blocks secured to. said casing protectin the same and ex- I tending over the face 0 said projections to protect them, said blocks being spaced apart to allow for expansion andcontraction all substantially asset forth.

' 2. In a boiler-furnace the combination of an outer casing rovide'd on the furnace side roo with pockets, 0 non-combustible blocks se cured in said pockets, said blocks extending over the edges of said pockets to protect the same and also being spaced apart to allow for expansion and contraction.

I 3. In a boiler-furnace, the combination of an outer casing, provided on the furnace side with projectione, of noncombustible blocks- Yorkfand .State of New York, this 26th day secured to sailcll projecsigiis inch a mange; of October, A. D. 1903.

as to protectt em sai' o'c eingprovi e with recesses to form in connection with the ELLIS EDGAR 5 a casing dead-air cells, the blocks being spaced .Witnesses:

apart to allow for-expansion and contraction. DAVID GRANT,

Signed at New York, in the county of New C. T. METOALFE.