Odi.V 1, 1946. l u v G, z, MlNToN ì ' 2,408,526- GLASS SUPPORTING SKELETON MOLD 'Filed Jan_.l10, 1944 ,wt L___ fw-f ____________`__ , 2- sheets-sheet 1 Oct. 1, 1946. G. z. MINTON I 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) l . 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. Y g" " A ~ " “ . .. 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. ' ‘~ 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. ' ' In the drawings: ~ ' ‘ ‘ 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. l Y ~ 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. ' " ‘ ~' _ ` , A f „ f g 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. ' ~ 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.