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US3896201A
Expired / Lapsed
US
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Method of processing raw materials for the manufacture of glass
Assignee: Saint Gobain Industries SA
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Filing: 1972-08-14
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Granted: 1975-07-22
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Expires: 1992-08-14
Abstract
Abstract A method of processing the raw materials of glass for fusion which comprises depositing upon a belt conveyor the mixed and moistened raw materials in particles of the usual sizes used in glass fusion, pressing the moist raw materials into a ribbon of approximately uniform thickness capable of breaking under its own weight when unsupported, and transporting the fragments of the ribbon formed at the end of the conveyor through a hot, drying atmosphere.
Inventors
- 👤 Marcel Mabru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:56
CPC Classifications
C; C03; C03B; C03B1/00; C03B1/02; C03C; C03C1/00; C03C1/02; C03C1/026
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
A METHOD OF PROCESSING VITRIFIABLE POWDERY RAW MATERIAL FOR THE MANUFACTURE OF GLASS BY FUSION WHICH COMPRISES: A. MIXING AND MOISTENING WITH WATER THE RAW MATERIALS, B. DEPOSITING AND SUPPORTING THE MIXED AND MOISTENED RAW MATERIALS ON A MOVING SUPPORT, C. PRESSING THE MIXED AND MOISTENED RAW MATERIAL WHILE ON SAID SUPPORT INTO A RIBBON OF APPROXIMATELY UNIFORM THICKNESS TO A DEGREE THAT THE RIBBON WILL BREAK UNDER ITS OWN WEIGHT WHEN UNSUPPORTED, D. TRANSPORTING THE RIBBON OFF OF SAID SUPPORT TO AN USUPPORTED CONDITION TO CAUSE THE RIBBON TO BREAK INTO FRAGMENTS UNDER ITS OWN WEIGHT, AND E. DRYING THE RESULTANT FRAGMENTS FOR SUBSEQUENT USE IN A FUSION FURANCE FOR THE MANUFACTURE OF GLASS.
Claim 2
Independent Claim
115 words
A METHOD OF PROCESSING VITRIFIABLE POWDERY RAW MATERIAL FOR THE MANUFACTURE OF GLASS BY FUSION WHICH COMPRISES: A. MIXING AND MOISTENING WITH WATER THE RAW MATERIALS, B. DEPOSITING AND SUPPORTING THE MIXED AND MOISTENED RAW MATERIALS ON A MOVING SUPPORT, C. PRESSING THE MIXED AND MOISTENED RAW MATERIAL WHILE ON SAID SUPPORT INTO A RIBBON OF APPROXIMATELY UNIFORM THICKNESS TO A DEGREE THAT THE RIBBON WILL BREAK UNDER ITS OWN WEIGHT WHEN UNSUPPORTED, D. TRANSPORTING THE RIBBON OFF OF SAID SUPPORT TO AN USUPPORTED CONDITION TO CAUSE THE RIBBON TO BREAK INTO FRAGMENTS UNDER ITS OWN WEIGHT, AND E. DRYING THE RESULTANT FRAGMENTS FOR SUBSEQUENT USE IN A FUSION FURANCE FOR THE MANUFACTURE OF GLASS.
Claim 3
Independent Claim
97 words
A method of processing vitrifiable powdery raw materials for the manufacture of glass which comprises: a. mixing and moistening with water the raw materials, b. depositing and supporting the mixed and moistened raw materials on a moving support, c. pressing the mixed and moistened raw materials while on said support into a ribbon of substantially uniform thickness, d. transporting and subdividing the ribbon off of said support to an unsupported condition to cause the ribbon to break into fragments and e. drying the resultant fragments for subsequent use in a fusion furnace for the manufacture of glass.
Claim 4
Independent Claim
97 words
A method of processing vitrifiable powdery raw materials for the manufacture of glass which comprises: a. mixing and moistening with water the raw materials, b. depositing and supporting the mixed and moistened raw materials on a moving support, c. pressing the mixed and moistened raw materials while on said support into a ribbon of substantially uniform thickness, d. transporting and subdividing the ribbon off of said support to an unsupported condition to cause the ribbon to break into fragments and e. drying the resultant fragments for subsequent use in a fusion furnace for the manufacture of glass.
Claim 5
Dependent Claim
27 words
A method according to claim 2 in which the subdivision comprises the steps of incising the ribbon through less than its thickness and separating the incised parts.
Claim 6
Dependent Claim
70 words
A method according to claim 2 in which the moisture content of the mixed raw materials is between about 5 and about 16%, and compressed from a shapeless mass to a thickness between about 4 to 12 mm to form a ribbon capable of breaking under its own weight when unsupported, and projecting the ribbon beyond the support to allow the ribbon to be subdivided under the influence of gravity.
Claim 7
Dependent Claim
34 words
A method according to claim 4 in which the subdivisions are deposited upon a second moving support, and are conveyed through a drying oven of progressively increasing temperature from ambient temperature to about 400*C.
Claim 8
Dependent Claim
48 words
A method according to claim 2 in which the pressing of the mixed and moistened raw materials comprises passing the raw material between a pressure roller and the support and wherein the peripheral speed of the pressure roller is substantially identical to the speed of the moving support.
Claim 9
Dependent Claim
47 words
A method according to claim 2 in which the pressing of the mixed and moistened raw materials comprises passing the raw material between a pressure roller and the support and wherein the peripheral speed of the pressure roller is superior to the speed of the moving support.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |