US1105572A - Anthracite-burning grate for furnaces. - Google Patents

Description

W. MGCLAVE.

ANTHRACITE BURNING GRATE FOR FURNACES.

APPLICATION FILED MAR.21. 1913. 1,105,572. Patented July 28, 1914.

3 SHEETS-SHEET 1.

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W. MUCLAVE.

ANTHRACITE BURNING GRATE FOR PURNACES.

APPLICATION FILED MAR.21,1913.

Patented July 28, 1914.

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W. JMCCLAVE.

ANTHRACITE BURNING GRATB FOR FURNAOES.

APPLIGATION FILED MAR.21.1913.

1,1 05,572, Patented July 28,1914.

3 BHEBTS-SHEET 3.

THE NORRIS PETRS CD.. PHOTOLITH() WHINGTDN l is a detail section on an enlarged scale WILLIAM' MCCLAVE, OF SCRANTON, PENNSYIVVANIA-,MASSIGNOR` 'FO MOCLAVEBROOKS COMPANY, OF SCRANTON, PENNSYLVANIA', ACORPORATION 0F PENNSYLVANIA;

ANTHRACITE-BURNING GRAT FOR F'IJATAGES.`

Specification o`f Letters Patent;

Patented July 281, 1914.

Application filed March 2l, 1913. Serial No.` 7555939.`

To all'whom 'it may concern Be it known that LVILLIMI MCCLAVE, a'citizen of the United States, andresidenti of Scranton, in the county of Lackaivannaf andi State of Pennsylvania, have invented certain new and useful Improvements in Anthracite-Burning Gratos for Furnaces;` and I do hereby declare the following tolbe a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, and to the figures and letters of reference markedl thereon.

Many attempts have been made to produce a furnace grate for burning the finer gradesl of anthracite coal and the presentl invention is designed to overcome certainldefects foundl to exist in the grates heretofore constructed,- and to accomplish certain desirableobjects,v as will hereinafter appear, and incidental* both tothe manufacture of the grates and to the operation of the same.

Inthe accompanying draWings,-Fignre l is-a sectional view, in a vertical plane fromfront to rear, of a grate embodying the present improvements. Fig. 2 is a top plan view ofthe dumping sections andbearer bars for the same, shown in Fig. l, the caps being` omitted from two oft the sections. Fig'. 3 show-` ingone of the dumping sections. Fig. 4 is atop plan View of the fourlcap pieces shown in section in Fig. 3. Fig. 5 is an elevationi of a portion of one of the dumping sections. Fig. 6 is a detail section' of a portion ofthe l dumping' section on substantially the line l 6--6 ofFig'. 3, this View also showing one half of" one off the bearer bars.

Like letters of reference inthe several figures indicate the same parts.y

The grate of the present invention, like grates heretofore constructed., is composed of' l a series of pivoted sections journ'aled in bearer bars such as indicated in Figs. land 2 by the letter A, said' bearer bars being in turn supported from the setting and Walls* of the furnace. y

Each dumping section of the grate `of the present invention is made large as compared Withl sections ofl grate's as heretofore'con` structed and each section comprises a rigid frame formed by "a plurality of socketed bars i arranged parallel toeachotlierand longitudinally of the" axis on which" the section K turns, said ybars seing @cassetta attirait snes i cepti`on of relatively small caps, each independent of the practically uniforui admission 'o a maximum area of .ex'tendllig'sooketbtl liars fpieces B by suitable' endy pieces. Each end piece i's provided with a journal` adapted to talea bearing inthe bearer bars; The socltet'ed bars of' thesectionsare adapted forthe r'eothcis' kbut so constructed'and arranged as 'to rovide'fbr a yair througharea and also to provide smooth fuel bearing'surface'over which the tools and implements for manipulating the fuel on'tlie grate may be diiagged without liability of" catching. Owing to the individually small areas of each of the fuel bearing caps, the evils and diflculties heretofore encountered because of tlicgrowtli of the metal arepraetically eliminated. i

As shown in the drawings, cach ufl the out the Whole'grate dumping' sections embodies longitfudinallfv` B` connected by end and ilt'eri'netliatebrace pieces B2, the Wholeconstituting a rigdgridlor"framework which] may lie'proporlioned to Withsl'and all the strains to which the section ymay be subjected iiinse and at the saine time be made relatively light so as toecono- Lmize in the iveiglitof the material used, as well as to facilitate" tlie' handling and mauiplilation of tlie section. Each"A section preferably has four of the' socketed bars B and is tlicrcfbre of considerable width, in

actual practice preferably about eighteen inches, audzeach of the end'pieces B is providcd'with a jmirnaled projection 7) adapted to seat in bearings in the bearer bars A, all as will' be best umlerstood by reference to the left hand portion of Fig; 2, `Where -tivoof the sections are shoivnwitli the fuel bearing caps removed. v

Tlie sockets shown at C in Fig. 2` are elongated'longitudinally of theliars B and are adaptedfortlie reception of'flat. Shanks (l of fuel bearing' caps D, the caps being held til-miv in place by Wrought iron projections rl which-are bent over on the under side of the bars B in the Well understood manner. y Y

The flielbearingface of each of thecaps preferably rectangular, as shown in the enlarged view, Fig. 4 and at the right handside orang. e, and @mi Seesen is provides 'with relatively narrow slots i, or Iopenirigs for the passageof' air through the cabs to siiply theneeessarv eaygen for 'cantieristica 'il fuel bearing caps are separated from each other` by spaces which are preferably only as wide as the slots or openings before referred to, the whole area of the air openings in the fuel supporting surface being a relatively small percentage of the total area, but uniformly distributed in the same. As shown, the right hand cap in Figs. 3 and L and the two intermediate caps are provided with edge slots E directly facing the unbroken edges of the adjacent caps and with openings ld.. which do not extend to the edges of the caps in either direction. The left hand cap shown in the two figures mentioned constitutes one of the edge caps of the dumping section and inasmuch as it is not desirable to have edge slots extending into a free space, or into spaces between the caps in proximity to other edge slots, this cap is provided with openings E2 .in-

stead of edge slots corresponding to the slotsl E. @ne edge of each of the adjacent caps extending longitudinally of the dumping sections is provided with edge slots F best seen in Figs. 2 and a, from which construction it follows that each of the spaces between caps has opening into it edge slots through the caps on one side but in no space will there be found oppositely disposed edge slots, thus providing for a maximum fuell supporting surface with the admission openings for the air narrow and so distributed that no portion of the fuel resting on the surface will be prevented from receiving all of the oxygen necessary for complete Combustion. The narrow edge slots and openings prevent the escape of fuel before the same is reduced by combustion to fine ashes and the dumping sections provide a ready means whereby cinders and clinkers may be discharged.

It will be understood especially from an inspection of Figs. 3, 5 and 6 that the edge slots and intermediate elongated openings in each of the cap sections flare downwardly, whereby the lodgment of any ashes which will pass through the top of the slots and openings is effectually prevented.

The desired construction of fuel bearing surfaces for each of the dumping sections rremoves the fire sufliciently far from the bars of the section frames to prevent in- `jurious action of heat and combustion on said bars and the fuel bearing caps which are. subjected to the most injurious action of the fire are individually small, thus preventing distortion by the cumulative effect of the growth of the iron when in long connected sections and each of said caps may be readily removed and renewed should the same become broken or worn out in use.

rfhe particular shape of the edgesv of the outside caps of each section is better illustrated in Figs. l and 3 and is designed to prevent the eect of growth tending to cause the sections to become inclined by reason of their overlapping edges striking each other and also to prevent interference with the hoe or implements used in manipulating the fuel onl the grate. rflic particular shapes adopted, however, are not now novel having been embodied in patents heretofore granted to me, but are advantageous even where the injurious effect of growth of the metal is slight, as in the grate of the present invention, for the level position of the sections is assured and the escape of any unconsumed fuel between the sections is prevented because of the fact that the sections may be brought into suoli close proximity and one may slightly overlap the other without causing difficulties in eitherthe manufacture or the use of the grate.

The frame of each dumping section is preferably provided with a downwardly extending arm fl to which the links l and control rods d are pivotally connected as has heretofore been proposed in grates of his kind, but it will be understood that any suitable means may be provided for manipulating the dumping sections in accordance with known practice.

Having thus described my invention, what l claim and desire to secure by Letters Patent of the United States is,-

1. ln a grate for burning fine fuel, the combination with the bearer bars, of dumping sections journaled in the bearer bars and each embodying a plurality of socket-ed bars extending longitudinally of the axis of the section, each socketed bar having mounted therein a series of independent fuel bearing caps, said caps being rigidly supported in fixed relation to each other throughout the entiresection and each having therein a plurality of elongated air admission openings and a lplurality of elonlgated edge slots extending through the fuel bearing surface.

2. ln a grate for fine fuel, the combination with the bearer bars, of dumping sections journaled in said bearer bars and each section comprising a rigid frame formed by a plurality of longitudinally arranged socketed bars rigidly connected by end pieces carrying` the journals for the section, each of said socketed bars having mounted therein a series of independent rectangular fuel bearing` caps located above the frame and each held rigidly with relation to all of the other caps of the section, each cap having elongated downwardly flaring air admission openings therein and elongated downwardly flaring air admission edge slots, the edge slots of each section being arranged opposite an unbroken edge of the adjacent section.

3. ln a grate for burning fine fuel, the combination with the bearer bars, of dumping sections journaled in said bars, each section comprising a rigid frame formed by a series of longitudinally extending parallel bars each having4 a. series of elongated socle eteI therein and end pieces carrying journals en which the section is supported, each of said soeketed bars having rigidly mounted therein a series of substantially rectangular fuel bearing caps having' edge slots and elongated air admission openings, said sections being spaced apart a distance substantially equal t0 the Width of the slots and openings and said slots and, openings being distributed uniformly throughout the whole `grate area, whereby air is admitted uniformly t0 all lportions of the fuel carried by the grate.

il. In a grate for burning fine fuel, a pivoted dumping` section Comprising a rigid frame formed by a series of parallel bars each having a series of equally spaced elongated socket openings therein and a n1ultiplieity of fue] bearing- Caps having flattened `Shanks seating in said socket openings, each of said fuel bearingcaps being substantially rectangular on its fuel bearing' face and each having' elongated air admission openings extending through said face, the edges of each cap in proximity to the edge of an adjacent cap in the section being' provided with air admission slots, whereby the air entrance openings are uniformly distributed without material reduction in the fuel supporting surface and the cumulative ei'l'eet of edge growth in the sections is obviated.

WILLIAM MCCLAVE.

Witnesses:

ALEXANDER S. STEUART, THOMAS DURANT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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