US1473846A - Grate structure - Google Patents

Description

3 Sheets-Sheet 1 0 000 a o o 0 0 0 00 J. G. GIBSON, JR

GRATE STRUCTURE Filed Aug. 17 1921 00000000000 c o o o o u o o o o o w Nov. 13 1923.

Nov. 13, 1923. HAT/3,84%

J. G. GIBSON-JR GRATE STRUCTURE Nov. 13, E923. 11,473,846

J. G. GIBSON, JR

GRATE STRUCTURE Filed Aug. 17. 1921 3 Sheets-Sheet 5 Patented Nov. 13, 1923.

GEATE STRUCTURE.

Application filed August 17, 1921. serial No. 492,940.

To all whom 2'15 may concern:

Be it known that 1, JOHN G. GinsoN, Jr., a citizen of the United States, residing at Atlantic City, in the county of Atlantic and State of New Jersey, have invented certain new and useful lniproven'ients in Grate Structures, of which the following is a specification.

One object of my present invention is to provide an improved grate structure which can be used with advantage in conneotion with fu naces, boilers and heaters and which will be so constructed that it will supply air in an im roved and novel manner capable of effectingapractically coniplete combustion of the fuel.

Another object is to include in my invention an improved air cooled distributer capable of supplyii ig a desired amount of oxygen to ffect the combustion.

Another object is to so construct Iny iniproved structurethat the grate bar body can be supplied with water so as to keep said body o paratively cool and prevent the same from readilybu'rning out.

A further object is to so construct my improved structure tliat it can be manufactured and installed at a low cost and will be durable.

These objects, and other advantageous ends which will be described hereinafter, I attain in the following manner, reference being had to the accompanying drawings in which Figure 1 is a top plan View of a grate structure einbodying my invention,

Figure 2 is an enlarged section of said structure taken on the line 2 -2 of Figure 1,

F igure 3. is atop plan View of one of the air cooled distributing inenrbers which is made in accordance with 111) inv Figure '51- is an inverted plan \i said member,

Figure Fris an end elevation of said incinher,

Figure (a'is a sectional view of said. incinber taken on. the line 6 6 of Figure 3,

Figure 7 is a side elevation of said ineniber,

Figure is a section of said member talten on the line 8 8 of Figure 3,

Figure 9 is a top plan View showing the body of the grate cast in one piece and differing from the form of the grate body illustrated in Figure 1 in which the bar the body of the grate cast integral with a.

sectional boiler,

Figure 12 is a section taken on the line 12-'-l2 of. Figure 11, and

Figure 13 is an enlarged fragmentary section taken on the line 13-13 oi Figure 1.

Referring to the drawings and particularly to Figures 1 to 8 inclusive, 18 represents the bod of a grate which includes hollow supports 1 1 provided with openings 15 for attachment f pipes for admission of water for cooling purposes. The supports are arranged side by side, are preferably T-shaped at their ends, as indicated at 16, and are placed with their T-shaped ends abutting each other as shown in Figure 1.

In transrerse section as shown in Figure 2 the supports 14 are of less width at their tops 18 than at their bottoms 19 and ledges or shoulders 20 are produced between the tops 18 and bottoms 19; said ledges extending outwardly from the side surfaces 21 oi? the top parts of the supports to the side surfaces 22 which are below the top parts 21.

By constructing the grate bot 7 portion 13 as above described, a space 23 is provided between the opposed side surfaces 22 of adjacent supports 14: said space extending between the inner surfaces 24 of the e:\'- tensions. These spaces 23 are open at their top and bOftOiYl and it is within these spaces that I insert in improved air cooled distribut' bars 25 which are preferably made oi. cast metal. ilacb of the bars 25 as clearly shown in detail in Figures 3 to S inelusii'e hes a top plate portion 26 which is ed hori' fully and from. which (le 7 v two longitudinal flanges having their ends ]0lli(i so as toiorui a co? iiiuous skirt flange 27. The top plate poi ion 26 ex lielldb l:ii.&$!21llV beyond the outside oi the skirt flange 27" to proriitle a. lziteial flange 28 which is preferably in the same plane the lG-1l 1a1.l1li1" part of the top plate portion 26. Immediately below the lateral flange 28 is a shoulder 29, the outer surface 30 of which is located inwardly from the outer edge surface 81 of the lateral flange 28. The shoulder 29 has recesses 32 at distances apart which lead upwardly from the under surface 33 as clearly shown in Figure 7. The lateral flange 28 has notches or cut-out portions 34: at distances apart leading inwardly from the outer surface 31.

The plate portion 26 has rows of upright perforations 35 which lead outwardly from the chamber 36 formed bv the skirt flange 27 and inclined perforation 37 lead outwardly from the chamber 36 as clearly shown in Figures 2 and 6.

1 preferably construct the parts so that the distance between the bottom surface 33 of the shoulder 29 and the top surface of the plate portion 26 s substantially equal to the distance between the ledge and the top surface of the grate body 13 so that the plate portion 26 will fit flush within the space between the side surfaces 21 of the top of the adjacent; supports and between the surfaces 26L of the ends of the supports as clearly shown in Figures 1 and 2.

The skirt flange 27 is of less width and length than the space 23 and when the distributing bars are placed in position there will be a space lJQtWBGILtl'lG outer side and end surfaces of each skirt flange and the grate body; such space being shown at a: in

Figures 2 and 13.

ith the construction above described, when the bars are placed in position the shoulders will rest on the ledges 20 and the recesses32 will be in communication with the space :0 surrounding each skirt flange and the recesses will also be in communication with the channel space indicated at 3/ between the surfaces 30 and the side surfaces 21 of the supports 14- whichare immediately below the lateral flange 28, and since the notches extend from the top to the bottom of said lateral flanges, these notches will be in communication with the channel space 1 be tween the distributing members and the grate body. It will be noted further that the hannel space 7 entirely surrounds the shoulder and thus air can pass upward through the space a, then through the recesses 32 into the channel 1 and then upwardly through the notches to the fuel. Air can also pass upwardly through the chamber 36 and through the perforations and 37; the air which passes through the perforations 35 being directed in an approximately vertical direction while the air which passes through the perforations 37 will be deflected at a slantcver the'tops of the supports 14:. Thus the fuelabove the grate can be supplied with an abundance of oxygen and the distributing bars will be kept comparatively cool due to the fact that they are practically surrounded by air space, and any heat imparted to the distributing bars and to the grate body will be taken up by the air o that the air whendelivered into the fuel In Figures 9 and 10, I have shown a grate body 13 which is similar to the grate body 13 above described with the exception that the supports 14: are all cast in one piece. In all other respects the construction is similar to that above described inconnection with the grate'body l3 and I have given similar parts corresponding reference characters" with the exponent a.

In Figures 11 and 12-, I haveshown the supports Lt cast integral with the sections 38 of a boiler 39 and my improved distributing bars can bepositioned between the supports 14 in the same manner as above described in connection with Figures '1 to 8 inclusive. The similar parts are given corresponding reference characters with the exponent 0. Y

While I have described my invention 'as taking a-particular form, it willbe understood that the various parts of my invention may be chan "ed without: departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, 7

but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is 1. A grate structure including supports spaced from each other in a portion of their length and provided with ledges; a top plate positioned upon the ledges between the supports and provided with air passages, and a continuous skirt flange depending be tween the supports and spaced form air passages.

,2. A grate structure comprising supports provided with ledges; a top plate having vertical-and inclined airpassages; a lateral flange extending from the top plate and pro- 7 .vided with air passages; a skirt flange depending from the top plate and spaced from the supports to form air passages, and a shoulder on the skirtfia-nge resting on the ledges andhaving recesses formin air pas sagesj.

A grate structure comprising supports provided with ledges; a top plate havin vertical and inclined air passages; a lateral flange extending from the top plate and having notches .forming air passages; a skirt flange depending from the top plate and spaced from the supports'to form. air passages, and a-shoulder on the skirt flange resttherefrom to i ing on the ledges and having recesses forming air passages.

4:. A grate structure including supports spaced from each other and provided with ledges and a top plate positioned between the supports having a perforated center and notched edges forming air passages, and shoulders resting on the ledges with air passages between it and the ledges and an air passage, between the shoulder and the support, communicating with the last mentioned air passages and the notches.

5. A grate structure including supports spaced from each other in a portion of their length and provided with ledges; a top plate positioned between the supports, having a perforated center and notched edges to form air passages, and shoulders resting on the ledges and having recesses forming air passages, the shoulder being positioned to form an air passage communicating with the recesses and the notches, and a flange depending from the top plate between the supports to form an air passage leading to the recesses and an air passage to the perforations.

6. A grate structure including hollow supports having T-shaped ends abutting each other and provided with ledges; a top plate positioned upon the ledges between the sup ports and provided with air passages, and a continuous skirt flange depending from the plate between the supports to form air passages. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN G. GIBSON, JR. Witnesses:

Gno. D. CoNNoR, LEONARD P. PARSONS.

Images