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Odi.V 1, 1946.
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2,408,526-
GLASS SUPPORTING SKELETON MOLD
'Filed Jan_.l10, 1944
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2- sheets-sheet 1
Oct. 1, 1946.
G. z. MINTON
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2,408,526
`GLASS SUPPORTING-‘SKELETON MQLD
Filed Jan. 10, > 1944
2 Sheets-Sheet 2
2,408,526
Patented Oct. 1, 1946
~ 'UNITED - STATE s
-
PATENT OFFICE
2,408,526
y
GLASS y SUPPORTING sKELE'roN MoLD
to
„Gerald z. A Minton, Tarentum, Pa., assignor
Allegheny
Pittsburgh Plate vGlass Company,
v
County, Pa., a corporation of Pennsylvania
ApplicationV January `10, 1944, Serial No. 517,665
9 Claims. (Cl. 49-67)
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Thisinventíon relates Vto supporting structures
for vcarrying sheet glass, and it has particularv ‘I
relation to yportable frames for supporting sheet
glass in connection with heat treatment thereof
preparatory to bending, annealing, or other op'-'
erations.
Y
One object of the invention is to provide an
improved frame of light weight adapted to sup
port sheet glass .for bending, annealing, or other
Vtreatment incidental tothe heating thereof.
2
sides and ends with inwardly directed braces or
rods II running horizontallyfto the inner metal
molding frame I2 which is also polygonal. The
braces I'! 'are welded or'otherwise „rigidly secured,
at their opposite ends to the side and end portions
of the outer and inner frames Ill and I2. Metal'
straps' I4 vare rigidly secured along the sides'and
ends of the inner frame andV have vertically zdis
posedwires I5 mounted therein by means of set
10 screws I6, which are threaded through the straps
to engage thelower portions of the wires and to'
' Another object of the invention is to provide
clamp them rigidly in place. The wires 'are in
an improved type ofglass supporting frame in
which multiple supporting elements are of mini
such form at their upper ends as‘to include an
mum size and of such length as to space the sup
gularsections 2B.
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nection with heat treatment thereof.
curved can be supported thereon andthe wires
|As shown in Figs. 2 and 3 the wires I5 and Ilia
ported glass materially from the body of the frame 15 can be so adjusted in the straps I4 that the 'seo
to reduce strain` or other undesirable marks,Y . tions ZUand 20a definev acurvature to which sheet
which otherwise might appear in the glass in con~
glass 2| is to be bent, or the' sheet glass already
' "
In one form Yof the invention relatively light
horizontal frames are proposed to include very
small upright supports, such as wires. disposed
around the frame structure'and to be so adjust
able as to be capable of manipulation to various
positions and thereby conform to various curva
adjusted to conform to the curvature of the' glass'.v
. In either case.'the glass is-uniformly'supporte'd’
upon theangular sections 20 >and'Zt'Ia of the wires
at a plurality of points of relatively small area; " “
In order toprotect the glass from blemishes'or
injury whicrhvmight otherwise result from direct;
tures of glass to be bent, or to the curvature of 25 contact with the wires, a: cord or' strand 24 vof non-.
bent glass which is to be supported thereon.
Frames of this type are adaptedfto be'trans
ported by conveyors or otherwise into furnaces'
according to conventinal practice, for> example;
combustible material. such as asbestosisfwound
around the inner frame vI2 and is traineditoand
. from- the" angular sections -20 around each. of
which 'the cord is looped. The glass 'thus rests '
according to the disclosure in U. S. Patent No. 30 upon the incombustible material rather than idi
2,021,180, issued to H. J. Galey on November 19,
rectly upon the supporting :wire sections'. The
1935. Since the frames are light and the wires'
' ends of the cord can bey fastened suitably to the
' are very small the points of support on the glass
are reduced to a minimum. It has been found
inner frame* I2, as indicated rat 26.
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v It is to be noted that the upright wires'lß'iare>
that the open light construction ofthe improved 35 ` interchangeable and that these Vwires can .bere-y
frames permits thev employment of lower tem
peratures than those required in similar proc
essing sheet glass when transported upon more
bulky constructions.` Likewise, as compared to
the heavy or bulky type of` frame previously 40 ‘
known, 'the improved frame herein described in
sures more uniformity in heating and cooling the
glass, as Well as minimum undesirable distortion
arranged in the straps I4 to-define, within reason
able limits, whatever type of curvature it is de,-v
sired to develop for supporting the> glass .while it
is being bent or otherwise treated. It is to be
understood that each supporting section ofthe
wire can be in the form of an angular extension
defining' an inverted L-shapeï (Figs. 2 and13). or
a similarly located section 20h can be in the form
or warping and the elimination of areas of high'
45 of an extension defining a '1f-shape (Fig. 5)'.1
strain.
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In the drawings: ~
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Likewise, the asbestos cords'24 andïzáb can be
looped about the extensions one or more tinies'as'
Fig. 1 is a planof a glass supporting frame;
indicated in these ñgures.
.
;_.
Fig. 2 is a vertical section taken substantially
If desired the >upright wires I5a can be formed
along the line II-II of Fig. 1 and including sheet
with'intermediate sections BIJ of horseshoe shape
glass supported upon the frame; Fig. 3 is aver V50 to 'provide for relatively slight linear adjust-_
tical section similar to Fig. 2 and illustrating
ments thereof. By employingïa suitable tool. such
another arrangement of' elements ofthe frame;
as pliers, any of the wires can be manipulatedfto
Fig. 4 is a fragmentary perspective on a larger
alter its overall length» The difference in length
scale of a portion of a wire support and ¿oord
_can be effected by bending the horseshoe vsection
55
looped thereon; Fig; 5 is a fragmentary verticalv
3_0 without materially changingthe shape or .po
section similar to Fig. 3 and illustrating a dif
sition of the wire. « VAll of these wires I5 *shown in
ferent form of support for the glass; and Fig, 6
the various figures are interchangeable regard~
is a diagrammatic perspective of another form of>
less of whether they have .straight shank por
glass supporting frame.
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tions or are provided withthe bendable horser-`
_Ing practicing- the Ainvention an outer metal ,60
frame ÁI 0, polygonal-in form, is provided along its
sho'e sections 3B.
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2,408,526
3
Referring to Fig. 6, an outer frame section H0
is rigidly connected by means of braces HI to
an inner frame section H2, and straps H4 ad
justably support upright wires H5 on the inner
frame, all of these elements corresponding sub
stantially to the elements Ii), H, I2, I4, and l5,
already described, with the exception that op
posite ends of the inner frame section H2 are
provided with upwardly curved sections H3 cor
responding substantially to the shape of a bent
sheet of glass i2! supported thereon. The Wires
H5 can be formed with intermediate sections
|30 of horseshoe shape corresponding to the sec
tions 3D.
Frame supports ofl theY typeA described above
are adapted to be transported into a conventional
furnace in which the glass is to be heated pre»
paratory to bending it or for other purposes in
connection with which heat treatment is in
volved. Furnaces of this typer are Well known,
an example of which is shown in the Galey pat
ent referred to above.
Although illustrative forms of the invention
have been shown and described in. detail it will
be apparent to those skilled in the art that the
invention is not so limited, but that various
changes can be made therein without departing
from the spirit of the invention or fromthe
scope of the appended claims.
I claim:
1. In an openvvork structure for supporting a
sheet of glass incidental to heat treatment there
of, a polygonal frame normally disposed i-n a
horizontal position,` and a plurality of upright
Wires secured upon the sides and endsl of the
frame in spaced relation to one another, said
4
interchangeably clamped in the straps by said
means, said Wires having upper angular sections
deñning a curved contour adapted to support
curved sheet glass conforming to the curvature
deñned by said sections.
5. A glass supporting structure comprising a
polygonal frame normally disposed in a hori
zontal position, a plurality of straps secured
around the sides'and ends of the frame and in
10 cluding clamping means, a plurality of upright
interchangeable wires interchangeably clamped
at their lower end portions inthe straps by said
means, said wires having upper angular sections
defining a curved contour and adapted to support
curved. sheet glass> conforming to the curvature
defined- by said sections, and non-combustible
cord material trained around the frame and ex
tending continuously to and from the angular
sections in looped relation about the latter to
20 insulate the supported glass from direct contact
with the wires.
6. Av glass supporting structure comprising an
outer polygonal frame» and inner polygonal frame,
‘both normally disposed in a horizontal position,
25 horizontal braces rigidly connecting the outer
and inner frames to form a unitary structure, a
plurality oi straps secured around the sides and
ends of the inner frame and including clamping
means, a plurality of upright Wires disposed
30 about the sides and ends of the inner frame and
clamped by said means in said straps, said Wires
having upper angular sections deiining a curved
contour and adapted to support sheet glass con
forming to the curvature deñned by said sections,
and non-combustible cord material trained alter
nately and continuously around the frame and
Wires having spaced upper angular extensions
around the angular extensions to insulate the
deñning as a groupy a curved contour correspond
supported. glass from direct contact with the
ing substantially to the marginal shape of the
Wires.
_
t
sheet of glass and adapted to support a sheet of 40
7. A glass supporting structure comprising a
glass conforming to the curvature defined by said
polygonal frame normaliy disposed in a horizontal
extensions`
position,v and a plurality of upright wires secured
2.-A glass supporting structure comprising a
upon the sides and ends of the frame in spaced
polygonal frame normally disposed in a horizontal
relation to one another, said wires having upper
position, and a plurality of upright wires- secured
angular extensions defining as a vgroup a curved
upon the sides and ends of the frame in spaced
contour and adapted to support a sheet of glass
relation to one another, said Wires having spaced
conforming to the curvature deiined by said ex
upper angular extensions deñning a curved con
tensions, said wires also having sections bent
tour and adapted to support a sheet of glass
from and back to the longitudinal Wire axes to
conforming to the curvature deñned by said eX
permit alteration of the overall length of the
tensions, and. non-combustible cord material
Wires.
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trained alternately and continuously around the
8.. A glass supporting structure comprising a
frame and around thel angular extensions to in
polygonal frame normally disposed in a horizontal
sulate the supported glass from. direct Contact
position, a plurality of upright wiresl secured upon
with the wires.
55 the sides and ends of the frame in spaced rela
3. A glass supporting structure comprising an
tion to one another, said wires having upper
outer polygonal frame and inner polygonal frame,
angular extensions defining as a groupa curved
both normally disposed in a horizontal position,
contour and adapted to support a sheet of glass
horizontal braces rigidly connecting the outer
conforming to the curvature defined by said ex
and inner frames to form a unitary structure, a 60 tensions, said Wires also having lateraily offset
plurality of straps secured around the sides and
portions of substantially horseshoe shape to per
ends of the inner frame and including clamping
mit alteration of overall length of the Wires.
means, and a plurality of upright Wires disposed
9. A glass supporting structure comprising an
about the sides and ends of the inner frame and
inner polygonal frame, an outer polygonal frame
clamped by said means in said straps, said wires
normally disposed in a horizontal position and
having spaced upper angular sections deñning a
substantially surrounding the inner frame, 0p
curved contour and adapted to support sheet
posite end portions of the inner frame being
glass conforming to the curvature defined by said
curved upwardly, a plurality of upright wires
sections.
having lower end portions secured upon the sides
4. A glass supporting structure comprising a
and ends of the inner frame, said Wires having
polygonal frame normally disposed in a hori
upper end portions de_ñning a predetermined
zontal position, a plurality of straps secured
contour conforming to the contour of a curved
around the sides and ends of the frame and in
sheet of glass to be supported thereon.
cluding clamping means, a plurality of upright
interchangeable Wires having lower end portions 75
GERALD Z, MINTQN.
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