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Патент USA US2115408

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April 26, 1938.‘
P, BROSSE
.
2,115,408
APPARATUS FOR THE MANUFACTURE OF COLORED GLASS
Filed 'June 19, 1954
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Filed June 19, 1934_
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April 26, 1938.
P. BROYSSE
2,115,408 '
APPARATUS FOR THE MANUFACTURE OF coLoREb GLASS ‘
Filed June 19, 1934
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ATTORNEYS ‘
2,115,408
Patented Apr. 26, 1938
UNITED STATES
PATENT * orFic
*
2,115,408
APPARATUS FOR THE
.
'
0F‘
COLORED GLASS
PierreBrossé, Paris, France, assignor-to‘ Société
'
Anonyme Holbrever, Paris, France
' Application June‘ 19, 1934, Serial No. 731,282
In France June 3, 1934
4 Claims.
This invention relates toga process allowing a
‘
(on. 49-45)
It is even possible, by means of ‘the process
continuous production of molten colored glass, according to the invention, with a‘ tank supplying
and particularly applicable to the automatic a plurality of feeders,of simultaneously produc
manufacture of glass in tank furnaces. ._ ing glasses of different colors by continuous oper
It is a further object of my invention to pro
Cl
ations, and also, if need be, white glass, by means
vide a device for carrying this saidpr'ocess into
practice.
.
.
of each of these said feeders respectively.
' My process further allows, even for productions
,
The process according to my'said invention
consists ‘in causing a batch of molten ‘glass pre
10 pared in a furnace to flow through one or more
of» glasses of different kinds by small quantities
of utilizing a single tank of large capacity and,
consequently, of preserving the advantage of a 10
distributing ducts, ‘adding the coloring matter to
the ‘glass between thefurnace and the outlet
very low cost price "over plants in which use is
and the ori?ce of the distributing duct, these
operations of adding the coloring matter and ren
dering the mixture homogeneous being affected
this allowing to prepare said‘ batch in better con"- ,
made, according to the ordinary processes," of
ori?ce of each distributing duct which is to'give separate tanks ‘of small “capacity'fo'r the produc
a colored glass, and in rendering the mixture of ition of different glasses by small quantities. Ac
coloring matter and glass homogeneous between ‘ cording to my invention, use is made, for all
the place where the coloring matter is introduced productions, of a single batch of white" glass,
20 in a continuous manner whilst the glass ?ows in
the distributing duct.
.
I am aware thatv a homogeneous'mixture has
already been obtained at the outlet of one or
more furnaces, by a discontinuous process which
25 essentially consists in intermittently pouring ‘the
constituents of the mixture into a vessel from
which this mixture is alsointermittently removed.
I am also‘aware of continuous processes for
rendering a glass homogeneous or purifying it,
30 or still for preparing striated glass as it flows
out of a furnace.
ditions than small separate batches, and avoids
the variations which are always possible from
one batch to another.
My process also preserves '20
’
all the advantages'of a continuous operation in all
cases.
'
Finally, as the tank always contains only a
single batch of white glass, this allows of avoid
ing the inconveniences—particularly the loss of
glass-which, of usual, always occur at the time
the composition is modi?ed, owing to the fact
that the residue of the preceding batch soils the
fresh
one.
i
'
"
"
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h
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' In a plant for carrying my said process into
practice, there is provided bétween‘th'e' tankv and
.
But, I do not know and dov not believe that
processes for the continuous preparation of
homogeneously colored glass by adding a coloring
35 matter to a stream of glass flowing out of a
furnace and subsequently rendering the mixture
homogeneous in an equally continuous way have
ever been known or used before my said invention.
This process has numerous and importantad
40 vantages over ‘those usually employed, which lat
ter generally consist in‘adding the coloring mat
the feeder or each of the feeders a ‘device through
which the glass'is ~distributed,‘this' said device‘
ensuring ?rst the incorporation of the coloring
matter into the white" glass,v (this said matter
being preferably used in the'form of a glass cone’ ,
taining‘ a large ‘proportion; of coloring matter),
and then the production of a homogeneous mix;
ture of theseelements.
V
'
'
‘
Other features and advantages of the invention
ter to the batch of white glass into‘the tank:
will appear from the description given 'he'reing.
after, with reference to the accompanying‘ draw
In the. ?rst place, it allows, whatever the ca-j
pacity of production of the plant may be, of pro
45 ducing a glass of a given color by quantities as
ings which illustrate an example of a plant for
carrying this process into practice _
‘ Fig. l is a vertical longitudinal section ' made 45
small as desired by continuous operations, and-of ' according to line I—I of Fig. 2.
rapidly passing from one color to another, where
as the above mentioned ordinary processes neces
sitatethe production of each kind of colored glass
50 by quantities equal to the charge contained in
the tank and, consequently, on the one hand,‘
Fig’. 2 15a horizontal section made according '‘
to line II—'-II of Fig.‘ 1.
1
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u
_
v
‘ Fig. 3 is a cross section made according to line
III-III of Fig. 2.
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‘
.'
important stocks are .thus constituted which re
main unused for a long time and, on the other
made according to line IV'—IV of Fig. 3.
hand, considerable time is often lost for ‘passing
batch of molten white glass'B is prepared.
The distribution of the glass is effected through
55 'fromone production to another.
‘ »
50..
‘
Fig. 4 is a section of a‘mixing stirrer and is
‘
_
This plant comprises a furnace F. in‘which a
a
'a,11s,sos -
one or more feeders D. of anysuitable type, hav- ' compel the mixture to iiowatav suitable speed, ‘
ing, for instance, ‘an outletl ori?ce 0 through
foravoidingthe too rapid flowing downstream
which the flow of, glass-is controlled by means of
of the coloring matter, on the one hand, and,on_ ‘
a needle VA.
the other hand, to cause this flow to take place
_
.
- '
'
According to ‘my invention, between the furnace
only at the lower‘ portion of the mixture, This
and the feeder there is interposed a device allow-7
' ingto mix’ with the Vjwhite glass the coloring
‘ matter rgiving'the desired that to: the glass when
it‘ issues iromthe feeder.
latter particularLv prevents the upper portionof .
the glass, which is the nrstto receive the ‘coloring,
matter, from‘ immediately ?owing away with this
, coloring matter, which,‘ would give a ‘,‘double" -
Fo’rvthat 'purpose,1the conduit connecting the glass, the upper portion of which would be colored 10_1
furnace to- the feeder, is appreciably longer than
in ordinary, plants, and comprises v‘a zone l;.in,
alone, or would at least be moreintensely colored
,
thanthelower portion.
a
>
which an orifice! is provided for the introduc-v = ‘0n the downstream» side of damper ll, th
15.
tion of the'colorlng matter supplied, for instance,
device comprises av zone I! in whichthe mixture > \ ‘
iromatank 3,"
becomes homogeneous, this homogeneity being ,7
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r This coloring matter preferably consists inv a ' facilitated by'heating to a suitable temperature,
' mixture of molten glass which 'serves‘as a carrier forinstancerby means of a burner.
and ofv a large'iproportion of the coloring matter wFinally,on the'downstream side 01' the zonelii,"
proper.
'
i,
A
I
,
,
,
0n the up side or the zone I, the glass outlet ‘_ damper it which. as the preceding ones,vcompels
>20 conduit
is providedvwith dampers l, I, adapted," bit to ?ow at-its'lower‘part only, whereupon'it is
on the one hand, to compel the batchoi ‘white discharged to the exterior," as usual, through
glass B to [?owv in this conduit throughitslower
25
part, _,and,_on' the other‘, hand,v by reducing the
cross section .01’ the passageway, to proportion
ally increase the speed of how, particularly ‘under
v the ‘damper I},
'
> owingftotms madame, the colorinsmat
s
the colored glass passes into the feeder under va
the
orifice’O.
,
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'
.
3
_
'
a
_
' 01' course, usevmight‘belm‘ade, on the down-
'
stream side of thezone I! of the device according
tov the, invention,» of» any suitable distributing
25
system other than the feeder D indicated solely _
by vway .Vof'» example.
fter is prevented from spreading upstream in the
YData will be given,by ‘way of example, concern-r '
'white glass, that islto say into the batch B which, 'ing a production-which has been ‘carried 'outsin 30
itawould’soil, 'so that vthis batch B can also be a furnace of the above described type; ‘it is more
used for. the manufacture ‘of’ glass of other tints, over Ito-be understood that none of‘ these ‘dataare
either ‘by’ introducing another-coloring matter
»,in the same deviceafter the, manufacture 9 in
i iprogresshasrbeenterminated-or, at anymoment, ‘
to be'considered as‘limitatlve, 'and‘that'it will be > a '
_ possible, without departing from the ‘scope ‘or ‘ "
my invention, to 'make therein" any, modi?cations
tnroughotner- feeders ‘supplied by the, furnace suited to. particular, conditions,» nature 1 of the 35;
through the
'01 similar. devices.
2, glass to be manufactured, characteristic features Y»
for instance shows two feeders each of which1is
‘of the
plant‘ employed, etc.
A
p
‘
>
'
'
provided with a devicefor. the introduction of,
The example underv consideration concerns the
the coloring matter, 'jso» that/‘both feeders are manufacture of lavender blue {glass ‘colored by
.capableoi' respectively‘producing two different means of cobalt oxide in the'proportion‘o'f ~1,6 gr.
'glasses‘at the same time. The machine might of
course be provided, with'any. suitable number 01'
' such
For,feeders.
the same ‘purpose, the ,- coloring
p 7 matter, is
oi‘ thisoxide per 100 kgs."of> glass. i "
'
'
'
The machine operates at-a‘ra-te'of' 32,5 strokes
per minute, and the article manufactured weighs
caused ,to;?ow downstream, with the glass to be
The coloringmatter employedis supersaturated
colored, at a relatively high speed.' Consequently,’ glass, containing a ‘proportion of. ‘cobalt oxide 40v the portion of the conduit in which the white glass times‘ greater thanlthat indicated above,v and '
receives this coloring matter is given a relatively this, coloring :mixture is ‘fed to? they‘vma‘chine
smallcross section'ffor instance'vby forming por- ‘ at a rate of'l60grams per minute; 1
.
greater-thickness on its bottom
55
‘.Inthis zone I of thedevicethegglassis
for instance by. faxburner‘,1_to a temperature at
which it is su?iciently ?uidinorder that the mix-,'
a.ing'cansuitablytalreplace.
'
a,
‘ The ‘speed of the white glass uponje‘ntering the ~
to
device is 01' 1,45- cm/min.,1and;by passing under
‘damper 5,,this speed is increased to‘ 5,50 cm/min.- , ‘ '
.. v ,In the portion of zone l,‘the cross section of
which is reduced bythe thicker portions ' I 0, lb, 575 1
' thespeed is of 5,30 cm/minqvand, on the down‘; , ~
V The mixture is alsostirred bylmeans; of'rrotaryr , stream side, at- the place where ‘the ‘mixture is
stirred by *.the stirrers, it‘ is » ‘reduced ‘to 3,90v
stirrers’] 6 provided ‘with ribs ta; rotating in re
verse directions, arranged in’ a winding vpath, and - cm/min. and keeps thisvaluein'zone "l5. ' ’ 1
in such a mannerthat‘passages onlyar'e a. The speed-of rotation of thestirrers 6 is of the
leftjbetween them andbetween each of’ them, and order 01*‘10 revolutions per minute. '
'
the walls 'poi'conduit I; thus.‘ the stirring is'ei'ib
On the-downstream side ‘of damper-i6, the
,ciently'exerted throughout the‘
of glass. 3,] speed is Reduced‘v ,to 1,90 cm/min}, ‘and, uponde
h a
to
In the example under consideration; each. oi’. , livery, that is: to say in'the front bowl of thefeedé
65 the stirrers 6 isactuated‘by a‘ motor ‘I, through
themedium'of a transmission ensuringfarsuite
> able gearingdown ratio; v. 'l‘hisjtransmissiongis'
er, it isOf’GIIOYcm/min.“
‘
'L
i‘
r,
,“
Finally, the mixture ‘is rendered homogeneous
by_heating'.it; by means of burners, to a‘ternpep,
veffected"through a chain‘ 8 and‘ toothed ,wheels, ature oi‘ the order of 1.400° C. in the zones-i ‘and
, 90,912, a'Cardan shaft“, and pinions II; .The ‘5:0f ‘theffdevice- 'I'he'burn'ers may‘beJOfany' '
70 stirred;v the transmission‘ and a, casing fl 2_;..en-,1 known type, and. similar to‘ I1, 18, and 19,- for
1 closing ‘the pinions ii are mountedon a portallli.
example“
>1
.
':
.v
-
w
~
"On thedownstr'eam'side' of the zonei inwhich
‘ the mixing of white-‘glass , and coloring matter
and the stirring of .thislmix’ture, are effected, as
‘up above statedia damper
Hells so arrangedjas to
1.»AYdevice for the continuous» manufacture
of ‘molten'homogeneous colored glass ‘from a _,
batch of molten glass; comprisinga tank where
>
,
2,115,408
in such batch is melted, delivery means spaced
from said tank and distributing such homoge
neous colored glass, a covered duct leading a
stream of this molten glass from said tank to
said delivery means and the combination of
means for adding coloring matter to the upper
surface of the glass stream at a predetermined
point in said duct, with means for stirring the
glass stream flowing in said duct, means for
10 heating said glass stream, said duct having dif
ferent cross sections at di?erent points along
its length so as to vary the stream vsection of
the'mixture of, glass and coloring matter in the
duct between the predetermined point at which
15 the coloring matter is added to the glass and
said delivery means.
2. A device for the continuous manufacture of
moltenhomogeneous colored glass from a. batch '
of. molten glass, comprising the combination, with
20 a tank wherein such batch is melted, delivery
means spaced from said tank and distributing
such homogeneous colored glass, and a duct lead
ing a stream of this molten glass from said tank
to said delivery means, of means for adding a
coloring matter to the upper surface of the glass
stream at a predetermined point in said duct,
the duct having a shallow portion at one point
along its length decreasing the depth of the
glass stream at the predetermined point where
30 the‘ coloring matter is added to said stream, and
means for stirring and heating the mixture of
glass and coloring matter between said pre
determined point where the coloring matter is
35
a
tributing such homogeneous colored glass. and =
a duct leading a stream oi.’ this molten glass from ' '
said tank to said delivery means, means Ior add
ing a coloring matter to the upper surface of ~
the glass stream at a predetermined, point in‘, '5, }
said duct, a plurality of dampers spaced apart '
in said‘duct and at least one being located upon
the downstream side of said predetermined point,
spaced projections also (arranged in the down
stream side of. said point within the duct, in
spaced relation to said dampers, and rotary
stirrers arranged in staggered relation in the
path of the glass stream on the downstream side
of at least one of said dampers, and means for‘,
heating the mixture of glass and coloring mat- 15' '
ter between the predetermined point where the
coloring matter is added to the glass stream-and
the. said delivery means.
’
4. A device for the continuous manufacture of
molten homogeneous colored glasses comprising 20
a container for holding a single batch ofvmolten
glass, a plurality of ducts extending radially ‘
from said batch and each leading o? a stream
01' the molten glass, delivery means at the outer ''
end of each duct capable of distributing the
streams of glass in the form of homogeneous‘
di?’erent colored glasses, means in‘ each duct for,
adding coloring matter at a predetermined point ‘
to the upper surface of the glass stream, means
beyond said point in each duct ‘for stirring and
means for simultaneously heating the glass, the ‘
duct having different cross sections at di?erent,
points along its length so as to vary'v the stream
added ‘to the glass and the said delivery means.
3. A devicefor the continuous manufacture of
molten homogeneous colored glass from a batch
section of the mixture of glass and coloring ‘
matter between the predetermined ‘point at which 35
of molten glass, comprising the combination,
‘delivery means.
with a tank wherein such batch is melted and
delivery means spaced from said tank and dis
the coloring matter is added to thelglass and the",
'
‘ PIERRE BROSSE.‘
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