US940849A - Furnace-grate. - Google Patents

Description

W- H- BAUSH.

FURNAGE GRATE.

APPLICATION FILED 0012s. 1905.

940,849. 7 Patented N09. 23, 1909.

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W. H. BAUSH.

FURNACE GRATE.

APPLICATION FILED 0GT.28. 1905.

Patented Nov. 23. 1909.

2 SHEETSSHEETZ.

wILLIAM H. nansn, F srmnerinnn, MASSAOHUSETTS,ASSIGNOR To NEW ENGLAND To all whom concern:

I ROLLER GRATE COMPANY. OF SPRINGFIELD, MASSACHUSETTS, A CORPORATION.

Enemies-enema.

' Be itknown that I, WILLIAM H. BAUSH,

H 7 a. citizen of the United Statesof America,

residin at -Springfield, in the county of Hampc en and Stateof Massachusetts, have invented new and useful Improvements in "Furnace-Grates, ofwhich the following is a s ecification';

hls invention relates to rate construe non for furnaces and is particularly adapted'for use in such furnaces as are installed under steam boilers, the object of the invention being to provide. a furnace in which the surface of the grate consists ofremov- :able'toothedsections loosely mounted on the upper edge of'rocker-bars extending in parallelism transversely of the furnace, the eon-f :tru'ction of these removable sections and of said bars being such that when therockerbars are swung in one direction from-their [normal position,-the action of the "said removablesurface sections will be to only break 'up the clinkers'and shake down the firewhile movement of the rocker-bars in (ILL- 0 (da s A further object of the invention lies in the opposite direction'from the normal operates' to open wide spaces between said Seetionswh'ereby the material supported on the rate may be' dumped into the ashpit. rom this it will be seen that one of the distinguishing characteristics of the invention .lies in the provision of means whereby when the rocker-bars are swung in one direction {from the normal itwill be impossible ,to dump the fire; whereas, when the rockerbars; are "swungill the opposite direction from the normal anunusua'lly wide space is rovide'd between the'movable sections reerred to, whereby the'dumpingoperation lmay be greatly facilitated; thus the shaking and breaking .up'of 'the clinkers may be ing openings between the surface sections ofithe grate whichwill permit the dropping of'the fire, andthe-operiing through which this dumping is effected and which is-usually distributed equally on opposite sides-:of thG'TGmOVablB 'gratesection is, by means of this invention, located entirely on ones'ide.

a compact and efiicient mechanism for trans rriitting the oscillating movements to the rooke'r bars; other. objects of the invention residing-in the-generalconstruction and ar-- rangement of the parts of the structure as a whole, all-as will more fully appear 1n the I Specification of Iletterslatent. Patent d. 23 v 1909 Application filed pctober 28,-1905.' Serial No. 284,835.

omitted and the furnace walls being in section.. Fig. 2 is a sectional elevation of Fig. 1 taken on line 22' of this last named figure, the section, however, not rilnning through the rocker-bars. Fig. 3 is a sectional elevation of the grate showing. the

rocker-bars when. swung to one side of their 'normal position to impart the desired shaking action. Fig. t is a sectional'elevation like Fig. 3, but showing "the "rocker-bars swungin the opposite direction to the shaking position, whereby wide openings fare provided between the removable surface sections of the grate topermit the dumpingof the. latter;

tion adopted to maintain the upper surface of the removable section in a proper horizontal position while permitting their easy removal. Fi 6 shows a modification of the construction in that'the grate sectionand the rocker-barare cast in onepiece. Fig. 7 is atransverse section through Fig; 5 'on line 7'7, more fully illustrating the mode of applying the removable grate section to the rocker-bar. Fig. 8 shows, in front and side elevation, the shaking and dumping mechanism suspended from the lower front edge of the grate-frame, as shown in Figs. 2,3,and4. r I

Referring to the drawings, a indicates the furnace-wall; b the sides, and c the endmembers of a'jbox-like frame in which the grate is supported, the endand side members of this frame being secured together rectangularly as shown by means-of bolts (Z atthe Fig. 5 shows a rocker-bar in sectlonal end elevation with a r'en'iovable seccorners, thew end members extending, ,as

shown in-"tlotted-lincs, beyond the sides of the frame and entering thefurnace-wall to support the frame, all of which is common construction. 1

In the oppositesides of the frame-members 6 holes .7 are providedto receive the trunnions 9 cast 'on the ends of the-rockerbars h. These bars are carried in the frame in parallelism one with the other, and near one endthereof each is provided with a depending arm 7' on the lower end of which is a short arm m parallel with the rocker-bar;

.and loosely hung on these short arms is a tion theyserve to deflect the air up through the grate and facilitate the combustion of the fuel evenly over the grate surface.

By means of the bar 0 all the rocker-bars ma be moved in unison, and at the forward an rear end of the frame of the grate, a bar 79 carrying dead teeth 9 is fitted over an upstanding rib 1' on the end-frame 0. While these dead teeth are not absolutely essential elements of the grate construction, they are usually employed as it permits the movable elements of the grate surface to be located at such a distance from the end walls of the frame as to rendertheir operation andconstruction more convenient and eflicient.

As shown in the various drawings, the surface of the grate is made up of the toothed removable sections 8 which. are provided with depending lugs t constructed to fit astride of the'upper edge of the rocker-bars h, the sides of the latter, as shown in Figs. 1, 5, and: 7, being provided with channels 1) which are clearly shown in Fig. 7 and in which the lugs t have a sliding fit whereby the removable sections 8 are prevented from tipping or moving sidewise when placed on the rocker-bars. i

To stillfurther assure the maintenance of the proper position of the removable sections 8, bosses 'w may be cast on the lugs 25 transversely thereof to give a broaderbearing on the rocker-bars and prevent any twisting movement thereof relative to the rocker-bars.

- When the grate is shaken or dumped, the sections .9 are prevented from lateral displacement by extending the teeth 8 at each or one end of the sections in opposite'directions to bring them to a bearing against the similarly located teeth of the other contiguous sections, and-this contact serves to hold the sections against lateral displacement.

One of the essential features of this invention consists incasting the lugs 1. obliquely on the underside of the sections 8 relative to the plane of the grate surface, whereby the normal positionof the rockerbars hwill be inclined relative to the grate surface, as shown in Figs. 2, 3 and 4. And while it is most desirable that the sections 8 which make up the grate surface should be removably supported on the rocker-arm owing to the many conveniences and economies resulting from this construction, these parts may be cast in one piece as shown in bring up against the stop-pin 14.

Fig. 6, without impairing the efliciency of the shaking and dumping features of this grate construction which have been referred to above. a

To operate the grate-bars to shake up the fire or to dump the same, the following V -mechanism has been provided whereby the necessary swinging movementmay be imparted to therocker-bars.

- On the lower edge of the forward end of the grate-frame, a plate 3 is'bolted, reference being had to Fig. 8 particularly, in which this plate is shown in end and front elevation. It is provided with two downhangipg arms, as shown, between which is hung a shaft 4 carrying a broken gear fi'in mesh with a segmental gear 6 pivotally supportedon a stud .7 at the lower end of the longer of said arms of the plate 3. and below the shaft 4. On the body of this segmentalgear, a rectangular. pocket 8 is provided opening toward the ash-pit door into which a. shaker-bar 9 may be inserted whereby the segmental gear may be oscillated on its supporting stud 7 to rotate the broken gear 5 in opposite directions, the latter being provided with an arm 10 which, b this movement, may be swung back and orth and by means of the connecting-rod 12, pivotally supported on the arm 10 at one end and pivotally connected by a bolt 13 at'its opposite end to the bar 0 thus imparts to the rocker-bars oscillating movements. Near the lower end of the. long arm of the plate 3 is a stop-pin 14 so located relative to the segmental rack 6 as to arrest the swingin movement of the latter toward the ash-pit oor, at such a point as will locate the upper surfaces 'of the removable sec; tions s all in the same plane, which is a horizontal one.

Obviously, the weight of the rocker bars It being hung in a frame as they are by their upper corners and also the weight ofthe bar 0 has a tendency to cause the rocker-bars to swing downto. vertical position, and this will always cause the segment a1 gear to To effect the shaking of the grate, the bar 9 would be raised from the position shown in Fig. 2 to that shown in Fig. 3 and then swung back again thereby moving the sections 8 from their level position to that shown in Fig. '3 and back again whereby the fire will be lifted; and the clinkers'caught between the contiguous edges of the sections- 8 will be broken up-anddropped through-to the ash-pit.

lVhen it is desired to dum the grate, the

stop-pin 14 is removed andt e shaker-bar 9 swung upwardly, whereby, owing to the angular relation of'the surface of the sections a relative to' the rocker-bars h, the movement of these from the position shown in Fig. 2 to that shown in Fig. 4 opens so wide a space frame, a. series of rocker-bars between the sections 8 that the dumping of the grate is quickly effected. If thes crockerbar's occupied a rectangular position relati'veto the surface of the grate sections only one-half of the width of the spaces 16 shown in Fig. 4fwould be available for dumping,

and these would be located on the opposite the position; shown in Fig, 4 to dump the fire. Y

The grate sections 8 are, as shown in Fig. 5 particularly, provided with a vertically disposed web 17 the lower'portion of which constitutes the lugs t, 'sa1d web running transversely of the rocker-bar; and extending across this rib parallel with the rockerbar are the webs or arms 18 whose upper surface constitutes the grate surface.

In Figs. 3'and 4 the sections s are shownonly in outline, the teethlS being omitted.

vHaving thus described my invention, what Iclaim and desire to secure by Letters Patent cf the United States, is

1. In a shaking and dumping grate, a ivotally mounted therein and having depen ing portions .below the pivot of the same, said rocker-bars being arranged parallel to each other and inclined toward the front of the frame, each bar, being provided with de- "described.

.pressions v in the sides of the same, a series of individual grate-sections mounted on said. bars and having slotted lugs for engaging the .etlepressions in the bars, whereby the grate sections are preventedjfrom transverse displacement, and lugs on theends of said sections for preventing the longitudinal displacement of the grate sections with relation Y to the rocker-bars, a depending arm on the frame, a broken gear thereon, a segmentalv gear also on the depending arm and mesh ingwith the broken gear, a bar connecting 'the rocker-bars, a link connected to said bar and extending to and connected with the broken gear, means for rota-ting the segmental gear whereby the grate sections are placed so that their normal upper surfaces are inclined either toward or away from the front of the frame, asdescr'ibed.

2. A grate construction comprising a frame, rocker-bars hung therein, a connecting piece for said bars, a link for operating the bars, grate sections carried by the bars, an arm on the frame, a broken gear-thereon, an arm connected to the broken gear and connected to the link, a segmental gear also mounted on the arm and meshing with the broken gear, a removable pin on the arm carrying said gears and inthe path of the segmental gear whereby movement of the same in one direction is prevented, and means 'for effecting the rotation of the last mentioned gear whereby thegrate sections are placed in shaking and dumping positions, as

WILLIAM H. BAUSH.

Witnesses:

K. I. CLEMoNs,

M. H. CHAPIN.

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