US3709673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Edge-roll machine in float glass apparatus
Assignee: PPG Industries Inc
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Filing: 1970-11-25
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Granted: 1973-01-09
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Expires: 1990-11-25
Abstract
Abstract A roll for contacting the upper surface of float glass during its production is supported upon a shaft having, near the roll, a bearing in contact with water-cooled members. The shaft, unlike those in similar edge-roll machines, need not be made of costly material resistant to high temperatures, because it is internally water-cooled and its coolant water is used to cool internally the edge roll. Because of the small distance between the bearing and the roll, wobbling of the roll with respect to the ribbon of glass is minimal. Though the edge roll of the instant invention is applicable for use in one-way stretch of float glass to produce thin float glass, it is especially useful in a process that uses edge rolls that militate against the necking down of float glass in the production of extra-thin float glass (about 2.5 millimeters or less) in a ''''two-way-stretch'''' or an ''''assisted-direct-stretch'''' process.
Inventors
- 👤 H Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:36
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/04; C03B18/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
152 words
In apparatus for supporting an edge roll within a float-bath structure in the float process for manufacturing flat glass, the combination comprising, a first tubular and internally fluid-cooled member of heatresistant material, said member being adapted at a first end thereof to support an edge roll and at a second and opposite end thereof to be turned, an edge roll supported by said first member, a second tubular and internally fluid-cooled mEmber, said second member being in the form of a sleeve surrounding said first member and providing a fluid-cooled bearing therefor, a plurality of bushings of lubricious, heat-resisting material spaced from one another at locations along and about the periphery of said first tubular member, at least one of said bushings being located within said float-bath structure and spaced from the center of said edge roll by a distance of about 1 to 18 inches, and means supporting said second member.
Claim 2
Dependent Claim
152 words
In apparatus for supporting an edge roll within a float-bath structure in the float process for manufacturing flat glass, the combination comprising, a first tubular and internally fluid-cooled member of heatresistant material, said member being adapted at a first end thereof to support an edge roll and at a second and opposite end thereof to be turned, an edge roll supported by said first member, a second tubular and internally fluid-cooled mEmber, said second member being in the form of a sleeve surrounding said first member and providing a fluid-cooled bearing therefor, a plurality of bushings of lubricious, heat-resisting material spaced from one another at locations along and about the periphery of said first tubular member, at least one of said bushings being located within said float-bath structure and spaced from the center of said edge roll by a distance of about 1 to 18 inches, and means supporting said second member.
Claim 3
Dependent Claim
34 words
A combination as defined in claim 1, characterized in that a heat-shield means is affixed to said second tubular member in an end thereof corresponding to said first end of said first tubular member.
Claim 4
Dependent Claim
44 words
A combination as defined in claim 2, further characterized in that said means supporting said second member comprise a carriage having caster means and a table pivotally connected thereto, and means for adjusting the pivotal position of said table with respect to said carriage.
Claim 5
Dependent Claim
29 words
A combination as defined in claim 3, characterized in that said means for adjusting the pivotal position of said table with respect to said carriage comprises a scissors-jack means.
Claim 6
Dependent Claim
25 words
A combination as defined in claim 3, further characterized in that said combination comprises motor means on said table operatively connected to said first member.
Claim 7
Dependent Claim
28 words
A combination as defined in claim 1, further characterized in that said combination comprises coolant-fluid supply means operatively connected to said first member and to said second member.
Claim 8
Dependent Claim
34 words
A combination as defined in claim 6, characterized in that a heat-shield means is affixed to said second tubular member in an end thereof corresponding to said first end of said first tubular member.
Claim 9
Dependent Claim
43 words
A combination as defined in claim 6, characterized in that said means supporting said second member comprises a carriage having caster means and a table pivotally connected thereto, and means for adjusting the pivotal position of said table with respect to said carriage.
Claim 10
Dependent Claim
34 words
A combination as defined in claim 8 characterized in that a heat-shield means is affixed to said second tubular member in an end thereof corresponding to said first end of said first tubular member.
Claim 11
Dependent Claim
28 words
Apparatus as defined in claim 8, characterized in that said means for adjusting the pivotal position of said table with respect to said carriage comprises a scissors-jack means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |