US227872A - Foueths of his eight to claek d - Google Patents

Description

(Modgl.) 2 sheets-sheet 1.

W. A. PAGE. Lime-Kiln.

No. 227,872. Patented May 18 1880.

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Y W. A. PAGE.

Lime-Kiln.

No. 227,872. N Patented May 18.18780.

v brick.

v furnaces,

UNITED STATES WILLIAM A. PAGE, OF ROCHESTER,

FOURTHS OF HIS, RIGHT T() CLARK SOUTH CAROLINA.

NEW YORK, AssIGNoR 0E THREE- D.- PAGE, 0E LIMEsToNE SPRINGS,

SPECIFICATION forming part of Letters Patent No. 227,872, dated May 18, 1880.

Application iled May 24,

To all whom 'it may concern: i

Beit known that IWILLIAM` A. PAGE, of the city of Rochester, in the county of Monroe and,State of -N ew York, have invented a certain new and useful Improvement in Limekilns; and I do hereby declare that the 'fol-- lowing is a full, clear,'and exact description of the construction and operation of thesame, reference being had` to the accompanying drawings, in which- Figure 1 is aground plan of the lower portion of the kiln. Fig. 2 is a cross-section of the-same in line of A B in'Figs. 3 and '5. Fig. 3 is a vertical section in lineofO to Din Fig. 2, showing shape of cupola, and drawing apparatus. Fig. 4 is a perspective view of side elevation, showing a portion of an iron stack, steam apparatus, watertank, ash-pits, and furnace-doors. Fig. 5 is a vertical section, showing peculiar shape of cupola, division-wall, ash-pits, and and front view of draw-kettle. Fig.` 6 is a vertical section of derrick,"detached chains,` screen,` apron, buckets, andl driving wheel, &c. Fig. A7 is a perspective View 'of bucket on enlarged scale, showingv bolt n, lug b', attached to chain. Fig. 8 shows side view of top `wheel on enlarged scalewith a portion of chain and buckets. Fig. 9 shows top view of derrick attached to kiln, screen-sitter, .and sand-apron, portion of chains, and bucket onV their course downward. Fig. 10' is a barred spout (for sifting fine. stone and sand) on enlarged scale. Fig. 11 is an elevation. of weightt ed roller for opening the lid for the discharge of lime into car. Fig. 12 is a modification of same. Fig. 13 is a 'view of sand-apron, on enlarged scale, to carry olf dirt and small stone outside the kiln. I

My improvement relates to limekilns. .The invention consists in the construction and arrangement of parts hereinafter more fully described and definitely claimed. t

A represents the kiln, which may be built of stonea's usual',and the upper portion maybe iron-clad, as shown in Fig. 4, or withall stone, as 4showiin Fig. 5, and lined inside with recoal burning The upper portion of the cupola B is of ordinary form, but opposite the furnaces C C is of peculiar cmstruction.v Directly opposite, and between the furnaces, is a division-wall, D, starting at a point below the furnaces and extending upward some 'distance abo-ve the furnaces, as is shown in Figs. 2 and 5. At its topis a coping-block, a., wedge-shaped, as shown, to divide the charge and throw olf on both sides intovthe space beneath. The wail is perforated directly beneath the copingblock by a series of ue-passagemb b, and above Athese is a second series, the object bein g, if' the stone hangs to coping-block, torenable a poker to be inserted4 from the side holes `to punch the sto-ne olf. For this purpose the ends of the ues above the furnaces aremade enlarged to enable the pokers to be easily in'- sented and to strike the lime at different points.

The sides c c of the cupola opposite the division-wall D are carried'up vertically o'n a line with the top of theMcoping-block, and'v from this point upward the said sides of the cupola are made inclined till they meet the vertical sides above, 'as shown at c' c.; This angle is of such extent that the passages between the inclined sides and coping-block are equal in capacity tothe passages, the division-A wall,and the vertical sides c c of the cupola, by which means a free discharge oi' the calcinedstone is allowed downward, and no obstruction can occur. l

Division-walls have before been used in limekilns, but rising some inches below the upper side-of the furnace-arch instead of abovey it, andii-i such cases theirobject has been to furnish a bed for and hold up the stone while it is subjected to Atheaction of the fires, and while drawing below, as the stone would settle and obstruct the drawing action; but i-n my presentinvention I so arrange the lower end of the kilnV that perpetual drawing may be accomplished, and -therefore carry the wall D some distance above the arch ot' the furnaces, also enlarge the passage of the cupola each side of the wall, by which means the stone clears itselfand never becomes obstructed. This wall, by risingabove the furnaces, alsol breaks the through-draft o't' tle furnaces and detlectsit upward, where it will be most eiective in its action on the stone. n n in ash-pit are gratebearers set at right angles with the grates to support the same.

Figs. 3 and 5 represent the contracted or-angular throat of the cupola at the bottom, where the lime is discharged. It has a chute, a, which throws the material off into a car which rests on ways and is run into the mouth ofthe kiln.

` F is a-lid which is hung by hinges t i. By this means the lid is drawn upward. By means of weighted cord the lid will be opened, allowing the lime topass out freely into the car. By raising the weighted cord the lid F will drop into the offset in ch'ute a, and is held closed by means .of drop-latch d. By this means the lime may be conveniently drawn from cupola as fast as calcined instead of large charges, asn ordinary limekilns, thereby making the kiln aself-discharger. i

Figs. 2 and: 4 show a steam Aapparatus for ejecting steam into the furnaces and ash-pits by means of a series of pipesv leading from lboiler 'K into 'dues w w, as is shown. in Figs. 2

and 5.'. (See round holes kin ash-pit and furnaces.)

The boiler is set, as shown in Fig. 2, in the division-wall between the furnaces'. No direct heat is applied, as the furnace-walls -conduct heat quite suiiicient to generate steam, thereby using no eXtra heat.' This boiler K is supplied with Water .by an exteriorv tank, H, as shown in Fig. 4, water-pipes t' 'i leading from tank H to boiler K.

Steamlis not confined to a high pressure, but passes oif freely, only slightly' confined by stop-cocks for the purpose of conducting more lor less steam at different points, as may be re- .quiredfthe boiler K h-avingbranch pipes m .m conducting steam downward and leading through the kiln into the `furnaces and the v ash-pits. The pipes m m pass into furnaces through lines w fw and tothe rear side thereof` and near the body of lime. At this point the jets of steam are most effective in increasing the-draft by injection up through lthe fur-- naces, and also mingling with the burning coal at the point farthest from the ingress of the air. It assiststhe combustion by furnishing oxygen. It also absorbs sulphurous gases, and thereby prevents-them from being `absorbed by the lime, thus producing a better quality of lime.

.The pipes m m', which enter the ash-pit, open through the sides of the ash-pit 'and assist the combustion, also have the tendency to' prevent burning out of the grates.

The steam-pipes entering the furnaces may be arranged by the use of cocks to discharge more or less steam at pleasure, thereby injecting enough to assist combustion, or a greater quantity to deaden the fires when too hot.

L, Fig. 6, is a derrick, standing inl an inclined position and'resting against the top of the kiln.` l'M are two endless chains passing around a spokedwheel, N,.at the top and a geared wheel at the bottom. P .ower is applied to wheel NV in any desired lmanner to impart motion to the chains. v l

Q Q, are buckets attached at intervals to the chains and forming elevators to raise the stone from the ground and discharge it into the top ofthe kiln. 'Ihese buckets are constructed, asis shownin Fig. 7 on enlarged perspective scale, with two vright-angled lugs, o o, at the upper edge, also a horizontal shelf, I?, which forms the receptacle for the stone.` The bolt n enters the links of chain and through the shanks of bucket, serving as the pivots on which the bucket turns. Bolt 'n is riveted to the bucket and chain only ati intervals, same as the buckets, serving also as a rivet in holding the chain together and prevents the chain from spreading and keeps them in l their proper position. These bucketspass upwardl between two inclined timbersl provided with grooves to keep them in their proper place. S, Fig. 9, is a chute or spout to catch the stone as it falls'from the buckets and conveying'it to the cupola. 1

T is a screen located in-the chute S in an inclined position and serving to sift the dirt from the stone as it falls thereon and prevent- 'ing it from obstructing the draft of the kiln.

The bars t t run lengthwise of the screen, and the screen is so` located that they dirt sifted out will fall outside of the kiln, being conducted out by the inclined apron W.

Having thus described myinvention, I do not claim, broadly, a division-wall within the cupola nor a steam-boiler set in a kiln only for the purposefully described; but What I` claim herein as-new is- 1. In a limekiln, the combination o'f the difvision-wall D, projecting above the furnacearches and-provided with ues b b, and the. v enlarged passages c c of the cupola above the division-wall, as shown an'd described, and for the purpose-specified.

2. In a limekiln, the combination of the angular lid F, for-opening and closing the discharge-passage of the cupola, it strikingiri the offset a and lheld closed by latch d, and the windlass'Gand weighted cord g, for operating said lid, as' shown and described, and for the purpose specified., o

3. In a limekiln, the'waterand steam apparatus, consisting of the water-tank H, the connecting-pipes I I, the steam-boiler K, and the .steam-pipes m m, combined and arranged to operate as and for the purpose specified.

' l4. In a li'mekiln, the steam-pipes m m and fines w, the steam being conducted to the rear of the furnace-arch and entering in the space near the lire directly between the coal and IOO IIO

lime, also the steam being conducted through v pipes m' m into ash-pits and under the grate's, in the manner and for the purpose specified.

v5.,In-a'limekiln', the combination,- with-the derrick L, endless chains M M,and buckets Q Q, of the screen Tand apron W, as shown y and described, and for the purpose specified.-

.6. The combination, withthe Ichains M M, of the buckets Q constructed with the bolt n,

attached and riveted to the buckets and links of the chin andto hold the parts together,

asshown'and described, land for the purpose specified. 4 4

5v 7. The combination, with the endless chain and buckets and the top of the kiln, of the screen T, resting beneath the discharge-buckets and over the edge of the kiln, and sliding thestone into the kiln'es v`it falls fromy the `outside the kiln, as shownend described, and

for the purpose specified.

WILLIAM A. PAGE.

Witnesses:

THos. H. BOMAR, T. BOURNE.-

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