USRE12323E - Glass-furnace - Google Patents

Description

- REISSUED'FEB. 28, 1905. s. 0. RICHARDSON, J8.

GLASS FURNACE.

APPLIOATION FILED SEPT. 14. 1901" 4 SHEETS-SHEET 1 REISSUED FEB. 28, 19.05.

him-12,323.

s. 0. RICHARDSON, JR.

GLASS FURNACE. APPLIUATION FILED SEPT.14, 1904 QSHEETS SHEET 2.

No. 12,323. REISSUED FEB. 2 1905.

S. 0. RICHARDSON, JR. GLASS FURNACE.

APPLIG ATION FILED SEPT. 14, 1904.

4 SHEETS-SHEET 3.

S f/ flmww yw No. 12,323. I RRISSUED FEB. 28, 1905.

S. O. RICHARDSON, J11. v

GLASS FURNACE.

' APPLICATION FILED $31 114, 1904.

4 SHEETS-SHEET 4.

v JQMAM/QV ptlaa :j UNITEn ST rEs m ssued rebmar 2B, 1905.

PATENT GLASS-FURNNQE.

sracxnemrxon fo ing part of n med Letters Patent No. 12,323, dated February 28, 1905.

I Original Nu. 3756.402, dated April- 5, Application for reiasuafilod September Id, 1904. Serial No. 2Z4,479.

To it m/ iyconcern: Be it known that I, SoLo OSMOND RICHARD sou, Jr. acitizen of the United Statearesiding at Toledo, in the county of Lucas and State of Ohio;have invented certain new and useful Improvements in Glass-Furnaces, ofwhich the following is aispecification; j y

' -My invention; relates more part cularly to' furnaces for the manufacture of lead glass,- and is especially adapted for use with furnaces oftheregenerativetype.

' The ,oh'ect of my invention istoprovide a furnace for. the continuous manufacture of lead-glass in such amanner that the melting of the batch and the .planing of the melted glass ,will be'acc'omplished in a'closed pot'in such a manner that the glass during the, melting and planing stages will-not; be directly exposed to of the glass may be carried onconti luouslyl' As" is Well known in this'art, to attain the best results in the manufacture of certain kinds of glass, such as lead glass, it'is necessary that the glass shall not beexposed to the direct action of the meltingflames during the melting'and planing stages; otherwise the glass will be impure and of inferior quality. is therefore the present practice to manufacturesuch fine qualities of glass infcl osed pots, the

batch being put iii-the pot. melted,and planed and then the glass worked out of the pot until the pot is'emptied. whereupon the'pot is again recharged and a fresh batch melted, planed, and worked out, as before. Obviously this prevents a continuous operation; necessi tates mor'eor'less handling of the pot and the coolingof the glass as it is being worked out of the pot, and the disadvantage ofworking .the glass from a-continually-lowering leveL'a matter which is especially disadvantageous when working with glass by means of ma cl ines-,'which under such conditions have to be continually adjusted to the changing level of the metal.

Another object of my, invention is to so arrange the furnace that the metal may be continuously maintained at a desired level, and

r the pot will be so arranged that it will not be .i'ng-pot. the melting-flames," and yet themanufacture surrounded or damaged by the mass of metal in the working chamber.

. -,Ilfhese and such other objects as may hereinafter appear are attained by the devices shown a in the accompanying drawingsfiri which Figure 1 is a longitudinal section of a furnace embodying my invention. Fig. 2 isa'sectional plan view thereof on the line 2 2 of Fig. 1.-

'Fig. 315 a sectional detail on-theline 3 3 of 'Fig. 2 looking in the direction indicated by the arrowsr Fig. 4 is a sectional plan View of a modified arrangement, and Fig. 5 is'a longi- 'tudinal section on the line 5 5 of Fig. 4.

- Like letters of reference indicate like parts in the several-figurespfthe drawings.

Referring by' letter to the accompanying drawings, A is the b'ench'supporting the melt- B B are piers supporting l'alo'earns C, across which other I-beams Dare arranged initiamiliar manner, said'I be'ams Dsupport'ing the blocks E, whichfonmthe bottom of the working cham'ber or tank. 1 I y F is the crown over the settling-chamber G and working chamber Hf.

I is thecrown over the'flameway or furnacechamberJ'. '5' 4 K K indicate the regenerators-of anyfainiliar' type.

Lisa bridge-wall separating the 'sett-lingchamber from the working chamber. and provided with a passage Z between said chambers near the bottomof said wall.

h the working opening, the bottom of which is on a plane coincident'with or below the top of the bench A I M is the melting pot or r-etort, comprising a melting-chamber 'N, a planing-chamber 0,. and a metal-cond uit P.- Arranged trans versely of the pot M is a partition Q, providedfpret erably, at the lower edge thoreof'with a'pas sage-way The partition may be also providedabove the'metalrline with vents (1,

, if desired. The melting-chamber N is provided with affeed-opening n. I

To provide for expansion and contraction, the partition Q is preferably loosely mounted within the pot M, as more clearly shown in tling, and working chambers may be main:

sense the chambers and H'really'constitute working-opening. As the batchin the meltirig- 1 drawn from the bottom of the settling-cham tensest heat produced by the heat from the reto cor respond with the amou nt ofmetal worked Fig. 2, although such construction may not be essential.

[n the operation of my improved furnace the melting-chamliver N is charged with the batch, and the regeneratorsbeing put into operation the blasts of superheated air and gas pass alternately backward and forward through the flameway J and over the pot or retort WI. The batch protected by the pot from direct contact with the melting-flames melts within the chamber N, and the metaL flows through the passage 1 into the planingchamber 0, where the planing step in the process of the manufacture of the glass takes place as the metal rises within the planingchambcr 0 until it overflows the wall or dam o and thence passes through the metal-conduitP into the settling-chamber G and thence through the passage! under the bridge-wall L andinto the working chamber H, thus insuring that the metal in the working chamber is her, where the molten glass is purest. As the refined glass flows into the settling-chamher (i it passes away from the zone of ingener'ators, while at the same time sufficient heat'is radiated from the flameway J into the chambers (Jr and H to maintain the metal at a sufliciently high temperature, while at. the same time allowing it to cool to a workable temperature. lt'desirechthe metal in the settained at the desired temperature by any suit I able heating means While I haye'referre'd to the chamber (fr-as a settling-chambei" and .to-the chamber H as a working chamber, it will be understood that in alargerthe working chamber dividedby the partition L with its opening so as to hold back any surface impurities and insure thatonl y the purest of the glass will flow forward adjacent to the chamber N melts it is continuouslyrenewed through thefeed-opening 12-, so that there is a continuous flow of metal into the working chamber H, and by charging themelting-cham-- ber N from time to timein sufficient'quantities out through the working opening 71 the mass of metal in the working chamber H may be constantly maintained at the desired level. Should the melting proceed more rapidly than the metal is worked out, the working opening, lt'will ser e as -.a safety or overflow opening, so that the metal may not rise above the top of the bench and so all danger of damaging the pot by surrounding it with a mass-of melted metal avoided. W'ith an understanding of'the purpose of this feature of my construction, as aboveexplainechit will be seen that for this pu l'[)OS8'.tl18 top of the bench A is substantially above the plane ofthe bottom of the working opening even when it is; l

' the pot or retort; an

on the same plane therewith, for 'i n that event the metal-line will be exactly on a plane with the top of the bench, and so the meta-l cannot overflow the benchor rise around the sides of the walls of the. melting and planing cham-- bers. The pot is therebymounted abovethe metal-line. I

In Figs. 4 and 5 I have shown a modification in which a furnace is provided with six pots in oppositely-disposed batteries of three pots each, each battery being provided with its own regenerators, but the two batteries being preferably covered by a common arch I; This arch or crown I is preferably arranged, as shown, so as to extend part way over the settling and working chambers and joining the arch or'crown F. By this arrangement I insure simplicity and stability of construction and also insure ampleradiation from the heating-chamber into the settling and working chambers for maintaining the metal in said chambers at the desired tem peratu re. The metal from the two batteries of pets flows into arrunway R, whence it passes into a circular working chamber H, whichis provided with working openings it. Except for this rearrangement,whereby my invention is adapted to a larger furnace from which the glass be simultaneously worked by a large number of workmen, the devices shown, in Figs. 4 and '5 are substantially thesame-as previously described. v 1

I do. not claim, broadly, the idea of a continuouslysoperating glass-furnace; but-El do claim, broadly, the "arrangement shown for providing a continuously-operating furnace with closed pots providing closed, melting and planing chambers communicating' with a highly-heated comparatively large receiving chamber, whereby glass may be continuously manufactured without 'exposingit' to direct contact; with themelting-flames during the melting and-planing'stages.

- Although in theideal operation of myap paratus as above describ'ed theglasswill be 'completely reduced andplaned before leav ing the reducing pot=or retort,. it will :be ob vious to those skilled intheart that in the, ordinary operation of my apparatusthe planing stage, which requires many hours'; will not be'con'ipl eted within the pot, butthe ipitial, planing will take'place in lIlIGPOhH-fltl they final planing of the metal will oce'un-between d the working chamber H, However,"not bnlywill the results de'- siredbe substantially obtained insueh practi cal 'op'eration'of my apparatus, but such r'e-' s'ults'will to-a large extent follow regardless ofwhether the reducing compartment/or re-. tort is divided into a reducing and a' planing chamber so long as the apparatus provides for protectingthe'batch during reduction and for thesubsequent exposure of the resultant metal to'the diuectaction of aheatin-g medium in accordance with the process fully explained and claimed i. my United States Patent No.

Obviously many; modifications and changes in detail, may be made with out departi'ng from the spirit of my invention.v A i As used in this specification the term con tiuuously operating is intended to apply to any operation in which the pots.o r retorts maybe fed with fresh material from time to time, ifsodesired, at the same time that metal is being withdrawn from the potthrough the V d'iseharge-port'.

It will be noted thatthe'process shown and described herein fo'rmsthe subject-matter -of my Unite States Letters Patent'No. .766,77 1.

'1I'claim' 1.-;The combination with a in rnace of the class described, "provided with a receiving chamber, comprising a planing-tank and a working-chamber incommunication with'each other and incommun catlon with aheatmg medium, of a closed pot conip-rising a melting-chamber and a planing-chamber in communicationiwith'each other, said pot being also'provided with a feed-opening leadingfromthcouts'ideof the furnace into the melting;

chamber, and with a discharge-openingleading from the planingrchamber 'ofsaid pot to the working chamber ofsaid ,furnaoe.

ing-chamber and a working chamber, said working chamh'er being provided with a working opening, thecombination with-a bench arranged so that the; upper surface thereof shall be. substantially on a plane above the plane oi the bottom of said working opening, and a continuously-operating melting-pot nov mounted upon said bench and within said heating-chamber, saidpot being provided witha feed-openingjeading outside of said heating; chamber, ,andn witha discharge-opening com-" inunicating with said working chamber.

The combination with a glass-melting fiirhace, provided with a rec'eiving-ohamberand with means communicating with the intefrior of said receiving-chamber for r'naint'aihf ing the metal in a sufficientlylfluidcondition -therein,*of a closed melting-pot provided with ajp'artitiofii thereby said pot is divided into a gingiinfo said,meltingthamberrand witha dam 7 melting-chamber and a planing-chamber, said pot being-p'r vi'ded Witha -feed-opening leadfmfim'ainitainirig the metal in said pot at'a de siiied'he ight, andja'd-ischarge-opening for the i 55 :saidpot into said receiving-chamber, said p artition being provided with a iasisage-waybe; tween "passage of the metal over said dam and out of said meltingand planing chambers. The combination with a' -glass furnace d a receiving-chamber, of a closed melting-pot having a part io'n whereby idrmelti g'tpqbi e a chamber? and a iplaningchambenl'said -parti lvlded 1n meltingtion. being provided; with an opening commu- ;nica ting withhoth of said chambers, a feedv g a chamber. 2. Ina glass-furnace, provided withfa heatopening leading into said meltiug-cha'mber, a

"dam for maintai'ning the metal at a desired height lathe planing-chamber, said pot bemg provided with aninclosed passage-way.

arranged to corivey'thejoverfiow from the planing-chamber into said receiving-chamber,

and means, iii-communication with the intea nor of said receiving-chamber, for maintain ing the metal therein in a sufficiently fluid condition.";" I) V a 5. In a glass furuacea plurality of oppositely-dispo'sed,continuously-operating,closed mon runway, said pots being provided with .feed openings for continuously charging the melting-pots arranged todischarge into acom same fromfa point outside the heating-chamber of-said' furnace, means arranged exter nally of said pots for melting the contents thereof, and a working chamberyarranged to receive the metal from said run'wa'y.

.6. In a; -furnace'provided with a heating-- chamber, anda-hi'ghlyr'heated receiving-charm ber, a fclosed melting-pot located in said heating-chainber-and mounted above they metalline In said recelvmgmhamber, said pot being provided with a feed-opening communicating with the interior thereof, and with a discharge opening leading therefrom into saidreceiving- 7-. In a furnace provided with aiheatingchamber'and a-highly-hea'tedjreceiving-cham I her, a closed melting-pot located in said heating-chamber and, :mounted above the metalline in said receiving-chamber, said pot being provided with a feed=opening communicating with the interiorthereof, and with a closed massage-way leading therefrom into said re' ceiving-chamber I 8. The combination with'a furnace provided:

with a heating-chamber .and aworking chamher in free communication therewith, of a closed melting-pot mounted in said heating} chamber and above the metal-line; in said 112- ceiving-chamber'; said melting-pot being pro' vided with-a feed-opening and ,with a disk charge-opening for the passage of metal from the interior of said pot into said receivingchamber, and means for reducing the solid chamber,

vcontents of said melting-pot and for 'main tainingiahigh temperature in'said' receiving 5 9. In a glassfurnace, provided with a heatiug-chamber-and a working chamber, a closed meltingpot -Ilocated. in said heating-chamber and provided with a partition whereby'iit is dividedinto a melting-chamber and a plan ing-chamber, said partition having an opening whereby communication is, ;provided be- "tween said chambers, said poth'eing also provid ed, w-ith a feed-opening communicating with said melting-chamber and witha discharge-opening leading from the planingchamberv and communicating with the work-" ingcha'rnberdof the furnace, and means in communication with the interior of said workher in communication with each other, said comprising a working cham ber, 'of' a plurality ing chamber for maintainingthe metal in a sufficiently fluid condition in said working chamber. 1 y

10. In a furnace of the class describe-d, provided with a working chamber comprising a planing-tank, a closed melting-pot comprisinga melting-chamber and a planing-champot being also provided with a feed-opening leading from the outside of the furnace into the melting-chamber, and With a discharge-. opening leading from said pot to said planing-tank, and means in communication with the interior of said planing-tank for main tainingthe metal in a sufliciently ,fluid' condition in said tank.

11. The combination with a glass-furnace of closed melting-pots provided with feedopenings for charging the same from a point outside of said furnace,.means arranged externally of said pots for reducing the contents thereof, means for conveying the resultant metal to the working chamber, and means for maintaining the metal in a'suificiently fluid condition in said chamber.

12. The combinationwith a glass-furnace provided with a working chamber, ot'a closed pot means arranged externally of said pot for reducing the contents thereof, means for conveying the resultant metal to said working chamber, and means communicating with the interior of the working chamber, for maintaining the metal in said working chamber in a fluid condition at less than a reducing heat. p

13. In aglass-furnace, the combination With a Work-out chamber. of aseries of retorts arranged to feed thereinto, and having external feed in openings. a chamber surrounding the 4 retorts and means for passing the flame and gases through said chamber; substantially'as describe l. 1

14. A furnace-chamber, a series of retorts extending transversely of the sai neandhaving a feed-in opening at one end and an outlet-opening at the other end,'1 neans tor-passing the flame and gases through the furnacechamber and around the retorts and a Workout chamber arranged to receive the glass,

fromthe retorts; substantially as described SOLON OSMOND inert-messy, JR. \Vitnesses:

FREDERICK E. WOLF, J. H. W RIGHT.

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