US616133A - James neil - Google Patents

Description

JAMES NEIL, OF LONDON, ENGLAND.

FunNAcE-c.RATE.l

SPECIFICATION forming part of Letters Patent No. 616,133,

dated December 20, 1898.

Application filed January 28, 1897. Serial No. 621,040. (N0 model.)

To @ZZ whom it may concern:

Be it known that I, JAMES NEIL, a citizen of the Dominion of Canada, residing at London, in the county of Middlesex, England, have invented certain new and useful `Improvements in Furnace-Grates, of which the following is afull and complete speciiication, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention consists of an improvement in rocking and dumping grates, and the object thereof is to provide-improved grate-bars for grates of this class so as to secure better combustion and a greater steaming efficiency for boilers.

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which the separate parts of my improvement are designated by the same letters of reference in each of the views, and in which- Figure lis a plan view of a part of a double grate constructed according to my invention; Fig. 2, a section on the line 2 2 of FigA l; Fig. 3, a transverse section on the line 3 3 of Fig. 2, and Fig. 4 a transverse section of my improved grate-bar.

In the drawings forming part of this speciiication, reference being made to Figs. l and 2, I have shown two of my improved gratebars as employed in a double grate, and in the practice of my invention I provide a grate-bar which consists of two central vertical longitudinal webs A, two vertical side longitudinal webs a, and transverse webs a2, by which the central longitudinal and side longitudinal webs are connected. As shown in Fig. l, the transverse webs a2 are arranged at a slight inclination to the longitudinal vertical webs;

4o but this arrangement is not essential and may or may not be employed, and as thus constructed my improved grate-bar resembles in cross-section the form of a barrel, the central longitudinal webs A being much wider than the side longitudinal webs a and the transverse Webs d2 being elliptical in form. The

'side longitudinal webs d are provided on their outer surfaces with vertical ribs or projections as, and the lower' edges of said side longitudinal webs a are preferably provided with downwardly-directed notches or recesses d4. The central longitudinal webs A are also connected by transverse webs d5, any desired number of which may be employed, and the inner walls of the said central longitudinal webs A are corrugated or fluted, as shown at d6. The objectin thus forming the grate-bars is to provide perfect means for ventilation and for the free circulation of the air through and around the separate parts thereof and also to avoid the use of too much material, and the lower edges of the side longitudinal webs d need not necessarily be projected be low the edges of the transverse webs d2, as shown in Figs. 3 and 4.

In Figs. l, 2, and 3 I have also shown improved devices for supporting the grate-bars when said grate-bars are used in a double grate. These devices consist of parallel side bars B, which are supported in any desired manner, and the outer ends of the grate-bars are provided with trunnions b, which pass through said side bars and are revoluble therein. The inner ends of said grate-bars are supported by horizontal parallel central bars D, which are connected by cross-rods d, and mounted in circular notches or recesses formed in the upper sides of the bars D are spindles d2. The spindles d2 are provided centrally with disks or plates d3, which are secured thereto and which are adapted to turn between the bars D, andthe ends of the spindles d2 are provided with downwardly-directed projections d4, which are beveled on their inner edges, as shown at d5, and are also provided with transverse notches or recesses d6, as shown in Fig. 3. The said spindles d2 are also provided on their upper sides and at their ends with upwardly-directed lugs or projections CF, and the inner ends of the gratebars are provided with vertical notches or recesses d8, which open downwardly, as shown in Fig. 3, and at the upper sides thereof with transverse slots or openings di), which correspond with the lugs or projections d'7. In connecting the inner ends of the grate-bars with the spindles cl2 the ends of said spindles, which are angular in form, as shown in Fig.

3, are passed into the angular notches or recesses d8 in the ends IOO said grate-bars are compelled to turn with said spindles, and by turning one of said bars the corresponding spindle and the other bar will also be caused to turn, as will be readily understood.

The grate-bars may be turned or dumped by applying a crank, crank-lever, or other device to the outer ends of said bars in the usual manner, and any preferred means may be employed for this purpose.

I have not shown my improved grate-bar as applied to a single grate; but it will be understood that when my improved bar is thus used both ends thereof will be provided with trunnions l) in the usual manner, and said grate-bars may be turned or dumped, as hereinbeiore described.

The central longitudinal webs A may also be grooved or corrugated on their outer surfaces, and the side longitudinal webs a may be grooved or corrugated on their inner snrfaces, and other changes in and modiiications of the construction herein described may be made without departing from the spirit of my invention or sacrificing its advantages.

The object of forming the vertical ribs or projections aion the outer sides of the longitudinal side webs a and the notches or recesses a4 in the lower edges thereof and also in corrugating or iiuting the central longitudinal ribs A is also to assist in breaking up the clinkers, and thus facilitating the dumping of the bars and the passage of the ashes, clinkers, and other material therethrough, in addition to assisting in the ventilation thereof, and the disk or plate d3, secured to the spindle d, serves to clean the space between the central parallel supporting-bars D when the grate-bars are turned, and it will thus be seen that I accomplish the object of my invention by means of a device which is simple in construction and operation and which is also comparatively inexpensive.

I-Iaving fully described my invention, I claim as new and desire to secure by Letters Patent l. A dumping-grate, consisting of two sets of grate-bars, the outer ends of which are revolubl y supported in parallel side bars, and the inner ends of which are supported in parallel central bars, said parallel central bars being provided with a revoluble spindle with which the inner ends of the grate-bars are detachably connected, and said spindle being provided with a disk or plate which is mounted thereon,centrally thereof, and which is adapted to turn between said parallel central bars, substantially as shown and described.

2. A dumping-grate, comprising two parl allel side bars or supports, two central parallel side bars or supports, a spindle mounted in said central side bars or supports, and revoluble therein, and grate-bars, the outer ends of which are revolubly mounted in the side bars or supports, and the inner ends of which are detachably connected with, and revoluble with said spindle, said spindle being also provided centrally with a disk or plate which is adapted to turn between said central supporting-bars,` substantially as shown and described.

In testimony that I claim the foregoing as myinvention I have signed my name, in presence of theV subscribing witnesses, this 7th day of January, 1897.

JAMES NEIL.

.Witnesses JAs. ALEXANDER, JAS. CAMPBELL.

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