US941866A

US941866A - Method of and apparatus for drawing continuous sheets of glass.

Info

Publication number: US941866A
Application number: US26057105A
Authority: US
Inventors: Emile Fourcault
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-05-15
Filing date: 1905-05-15
Publication date: 1909-11-30
Anticipated expiration: 1926-11-30

Description

P. YOURGAULT.

METHOD OF AND APPARATUS FOR DRAWING, CONTINUOUS SHEETS 0F GLASS.

APILIGATIOH FILED MAY 15 H205 941,866.

Patented Nov.- 30, 1909..

3 SHEETSSHE ET 1.

E. POURGAULT. METHOD OF AND APPARATUS FOR DRAWING CONTINUOUS SHEETS 0F GLASS.

APF'LIGATIOR FILED MAY IE, 1905.

Patented Nov. 30, 1909 3 SHEETS-SHEET 2.

LPQURQAULT METHOD OF AND APPARATUS FOR DRAWING CONTINUOUS SHEETS 0F GLASS.

APPLICATION FILED MAY 15, 1905 941,866. v Patented Nov. 30. 1909 3 SHEETS-$111131 3 Mazzeaee a, Zj pg f n x zflzwdafaui-cawz c KW 9 Z;

35 some.

cross sections 59 :1 piece I; of

55 The piece I) is l UNITED PATEI'ZQ iz EMILE FOURCAU-LT, 6F LGIDELINSART, BELG'IUK.

METHOD OF AND APPARATUS F93 DRAVIING: CONTINUOUS iiEETfi 9E ilfiefrlfi.

flpeeification of Letters Eatent.

Patented New. 3i}.

Application filerl May 15, 1905. Serial No.2$ .571.

To all whom it may concern:

Be it known-that l, EMILE FOURUAULT, engineer, subject of the King of Belgium, residing at Lodelinsert, Belgium, have invented certain new and useful improvements 10 No. 201,763 of April 6, 190%, relating to the manufacture oi sheets of glass by tlrew 111g, .1 have shown a refractory float having an opening ilieretlirough for supplying the glass Zlllll to facilitate the drawing operation. This float; is more or less dipped the molten glass for regulating the sup-. ply. By this process the sheets obtained often have Wrinkles or streaks on their surfaces. This defect is the result of improper mixture of the glass when drawn and e loci;

of homogeneity of the molten glass.

The method and. apparatus of the present invention has for its essential objece to pre vent the formation of Wrinkles or streaks by operating to work up the glass at the 3o-of the sheet during drawing.

. Inthe accompanying drawings: Figure .l is a. transverse sect-ion through the eppera- 11s.: embodying the features of the invenlion. Fl". 2 is :i longitudinal section of the fig. 3 is :1. plan YlQW. Fin. at is a cross sectional VlOW of the roller howing details of construction thereof anal the operation of the in the molten Fig.

0 a sectional elevation particularly showing one of .the rollers and the hollow metal lie shalt therefor. Fig. (i is a cross sectional vie w of the rollers and e (lingrmnmutic illustration of guide rollers to cooperate with the 'r'nvn sheet. Figs. {incl 8- are detail of the rollers showing addicooperating therewith. Fig. cross FIOCilOIl showing a. slight lllOlltll feel-ii gliies is inclosetl in e tank 0.; l u'l'ory material floats on the molten unrl is use-fl not only for retaining l impurities of the surface of the molten flHHS. but also for preventing too great rm Ion ol heat from its surface. (hill in its lower portion with e longish-amen aperture extending cools when In order to obtain e suitable consisteney of.

therethrough and cornxnuifiiceting With en enlargement of the some aperture at the ugper portion for a purpose "which Will he presently set forth. In this i oel 5 two roll ers (Z d of refractory mete are mount, (5d, the Stiltl rollers dipping into the molten These rollers are cert-led on hollow metallic sheftso 211ml (2 for cooling the same internally by ii. C-UJi of suitable liquid. On these shafts are fixer toothed wheels 2", f, preferably in the form of sprocket Wheels, which tlit'; connected through the medium of endless chain ells, not shown, with other toothed Wheels adapted LO- bit? rotated either mechanically or by hand to set up 21 rotation of the two shafts e, e oml the rollers (5, cl. By rotating the rollers d, d in either one of two directions, they will operate to draw along lass ivl ch adheres to th ir lower portions, ft-IKl. the coating will he thicker as the rollers are colder ent'l the "less more viscous. ln iither Words the COlilfil portions of the rollers will have o thielazeit' eotiting oi glass, or will telre up more of the glass. Theee rollere, operate practically as rotary pnmgs or lifting means for supplying the glass at the basis of the sheet drawn. It the eylinclers e and d are disposed at :1 suitable distance from each other, the coatings of glass thereon will come into contact and form a smell accumulation of semi-liquid glass between the rollers. The sheet iron. or belt. forffeerling the glass will he brought in between the rollers at the point Where the accumulation of senselieuicl glass is located and slowl draws o April 5, 1904, the hail; being conventionally shown by Fig. l es i5".

Figs. at and. 5 particularly illustrate how the glass passes around the rollers cl when these rollers are nearly in eontiiet anti rotated in the direction of the arrows g and g. The glass which passes around the rollers it leaves the bath of glass.

the glass at the base of the sheeh clravvn, it is only necessary to vary theepeerl of rotation and the diameter of the rolls. The

fluidity of the glass .rneyloe easily regulated thermore, if the speed of rotation of the rollers (Z and Z is such as to feed to the basis of the sheet it an amount 'of glass greater than can be carried up with the sheet, the excess of glass will run 011' or out at is at the ends of the rollers and return to the tank a, which will result in a horizontal movement and effect a lateral drawin ,whlch will further prevent the formation oi? streaks liable to be produced by a contraction of the molten sheet. 5 c

Fig. 6 illustrates the rollers as being spaced a greater distance and also extended deeper into the molten glass, and indicates that under such conditions a proper supply and a suitable consistency of the glass may be maintained between the rollers without liability'of a break of the glass subjected'to the drawing action. The asbestos coated rolls 7', j, asdisclosed by my patent and application hereinbeforementioned, are illustrated in cooperation with the rollers 03, d in Fig. 6.

Fig. 7 illustrates the rollers d and d'-rotated in opposite directions to show that the glass may be practically drawn under such conditions.

It will be understood that the rollers thus far described and directly engaging the molten glassand also similar rollers which will subsequently be referred to may be varied as to their dimensions and material. used in their construction.

. rollers.

In Fig. '7 metallic rolls Z Z are used with i the rollers d, d, the rolls Z Z operating to roll and cool the coating of glass on the roll d, d and reducing more or less the dimensions of the glass passingovcr the said The rolls Z, Z are tubular and are cooled by a circulation of water or other suitable cooling liquid theret-hrough. ,The direction of rotation of the rollers Z, Z is indicated by the arrows in Fig. 7 as being reverse to the rotation of the rollers (Z, a l, and if desired the rollers Z, Z may be grooved as Z Fig. 9, to form designs which may be impressed or printed on the'drawn sheet of glass, andby this means sheets of grooved glass maybe produced.

Fig. 8 shows rollers m, m similar to the rollers Z, Z located closer to the drawn sheet, and operating particularly to retain a greater quantity of lass at the base of the drawn sheet, the rol ers d, d in this instance rotating outwardly and the rollers m, m rotating inwardly. i

From the foregoing it will be understood that the method of drawing sheet glass in accordance with the prchcnt invention consists in preparing a mass of molten glass and conveying a portion of the molten mass to a sheet drawing point and continuously replenishing the supply of molten glass as the drawing operation proceeds. In addition to the operation of preparing and. drawing the I the molten glass, a float havin an I senses glass just eXipIained a portion of the sur race of \the ;molten mass is ,contin'uonsly moved away from the two facesof the sheet as drawn and also from the two ed es of the latter. This method is not depen out upon the precise mechanism shown in various forms, but maybe pursued with any analogous mechanism. r

The glass in accordance with the present apparatds and method is mechanically moved to a drawing point. By mechanically moving the glass it is meant'to be understood that means are employed other than the con taining receptacles, openings in the latter,

conduits and float blocks, for moving the glass to a point of drawing independent of gravitation alone or the tendency: of all liqaids to seek a level in connected receptacles.

Having thus described. is claimed, is:

1." In an apparatus for drawing a continuous sheet of glass, the combination of rollers for supplying less at the'basis ofthe sheet V to be drawn, t e'rollers being dipped into an opening therethrough in which the rollers are disposed, and means for operatin the rollers.

52. In an apparatus for rawing sheet glass, the combination of a'receptacle for molten glass, at float disposed inthe rece therethroug 1, and revolving means carried held in the opening ofthe latter;

the invention, what 3. In an apparatus for drawing "sheet glass, the combination with a receptacle 'for molten glass, a float depressed into the re- 'ceplaclc and into the molten glass therein;

and having an opening therein, and a pair of rollers-held'by the float and disposed longitudinally with respect to the latter.

a. An. apparatus for drawing sheetglass, comprising a receptacle for the molten glass, a bait for drawing the glass in sheet form therefrom, and revolving means extendin approximately throughout the width of the sheet drawn and from between which the sheet is drawn.

5; In an apparatus for drawing sheet glass, the comblnation with a receptacle for the molten glass, a bait for drawing the glassin sheet form therefrom, and revolvin devices approximately of the length 0. the width of the sheet to be drawn and from be tween which the sheet drawn.

6. In an apparatus for drawing sheet glass, the combination of a receptacle for molten glass, a. bait for drawing the glass in sheetform therefrom, of two revolnble bodies arranged in parallel relation and having a length approximately the same as the width of the sheet to oc' drawn and from between which the sheet is drawn by the bait.

7. In an apparatus for drawing {sheet glass, the combination of a receptacle for molten glass, a bait for drawingthe glass in point and continuously replenishing the moltenmass to the base of the sheet drawn.

23. In a machine for drawing sheet glass, the combination of a receptaolecontaining molten glass, means for drawing a sheet of glass therefrom, and means for simultaneously moving a portion of the molten glass in the receptacle to a drawing point and continuously replenishing the molten glass 10 at the base of the sheet drawn and to parts of the surface portion of the moltenlniass In testiniony whereof I have hereunto set my hand in presence of two subscribing witnesses. V

\ EMILE FOURCAULT. Witnesses:

ARTHUR REGNIEN, C. BASTIER.