US3717290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of glass sheets having predetermined outline shapes
Assignee: PPG Industries Inc
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Filing: 1971-09-17
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Granted: 1973-02-20
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Expires: 1991-09-17
Abstract
Abstract Glass sheets are scored and broken out in sequence on a conveyor line which includes a loading station for receiving rectangular sheets of glass of one predetermined outline size from a first storage means or pallet or from a second storage pallet containing glass of a different predetermined size. Just beyond the loading station are serially arranged first and second scoring stations and beyond these are located serially arranged first and second glass breakout stations. The first scoring and breakout stations are arranged to score to a first outline pattern and breakout, respectively, glass from the first pallet while the second scoring and breakout stations are arranged to score to a second outline pattern and breakout, respectively, glass received from the second pallet. This arrangement permits very rapid changeover from one pattern to another; pattern changes and maintenance can be effected on one set of stations, e.g., the ''''first'''' scoring and breakout stations while the other set of stations remains in operation.
Inventors
- 👤 W Bentley
- 👤 J Kellar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:56
CPC Classifications
C; C03; C03B; C03B33/00; C03B33/02; C03B33/04; Y; Y10; Y10T; Y10T225/00; Y10T225/10; Y10T225/12; Y10T225/30; Y10T225/307; Y10T225/321; Y10T225/325; Y10T225/329
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
163 words
In the method of scoring and severing glass sheets to predetermined outline shapes wherein first and second scoring stations are provided along a conveyor line for scoring glass sheets to first or second outline patterns with first and second glass breakout stations being provided on said conveyor line downstream of said first and second scoring stations to effect severing or breakout of glass sheets scored at saiD first or second scoring stations respectively, the steps of sequentially scoring a plurality of sheets at the first scoring station while advancing said sheets in step-by-step fashion through said second scoring station while the latter is held inoperative and sequentially severing the sheets along their score lines at the first glass breakout station, and, after a desired number of glass sheets have been scored and severed at said first scoring and breakout stations, commencing to score glass sheets at said second scoring station and to effect breakout of said scored sheets at said second breakout station.
Claim 2
Dependent Claim
163 words
In the method of scoring and severing glass sheets to predetermined outline shapes wherein first and second scoring stations are provided along a conveyor line for scoring glass sheets to first or second outline patterns with first and second glass breakout stations being provided on said conveyor line downstream of said first and second scoring stations to effect severing or breakout of glass sheets scored at saiD first or second scoring stations respectively, the steps of sequentially scoring a plurality of sheets at the first scoring station while advancing said sheets in step-by-step fashion through said second scoring station while the latter is held inoperative and sequentially severing the sheets along their score lines at the first glass breakout station, and, after a desired number of glass sheets have been scored and severed at said first scoring and breakout stations, commencing to score glass sheets at said second scoring station and to effect breakout of said scored sheets at said second breakout station.
Claim 3
Dependent Claim
163 words
In the method of scoring and severing glass sheets to predetermined outline shapes wherein first and second scoring stations are provided along a conveyor line for scoring glass sheets to first or second outline patterns with first and second glass breakout stations being provided on said conveyor line downstream of said first and second scoring stations to effect severing or breakout of glass sheets scored at saiD first or second scoring stations respectively, the steps of sequentially scoring a plurality of sheets at the first scoring station while advancing said sheets in step-by-step fashion through said second scoring station while the latter is held inoperative and sequentially severing the sheets along their score lines at the first glass breakout station, and, after a desired number of glass sheets have been scored and severed at said first scoring and breakout stations, commencing to score glass sheets at said second scoring station and to effect breakout of said scored sheets at said second breakout station.
Claim 4
Dependent Claim
163 words
In the method of scoring and severing glass sheets to predetermined outline shapes wherein first and second scoring stations are provided along a conveyor line for scoring glass sheets to first or second outline patterns with first and second glass breakout stations being provided on said conveyor line downstream of said first and second scoring stations to effect severing or breakout of glass sheets scored at saiD first or second scoring stations respectively, the steps of sequentially scoring a plurality of sheets at the first scoring station while advancing said sheets in step-by-step fashion through said second scoring station while the latter is held inoperative and sequentially severing the sheets along their score lines at the first glass breakout station, and, after a desired number of glass sheets have been scored and severed at said first scoring and breakout stations, commencing to score glass sheets at said second scoring station and to effect breakout of said scored sheets at said second breakout station.
Claim 5
Dependent Claim
58 words
A method as defined in claim 1 wherein said second breakout station is held inoperative after commencement of scoring at said second scoring station until the last sheet scored at said first scoring station has passes therethrough, said second scoring station being held inoperative until the last glass sheet scored at said first scoring station has passed therethrough.
Claim 6
Dependent Claim
70 words
The method as defined in claim 2 including subsequently progressively rendering said second scoring and breakout stations inoperative and commencing operation of said first scoring and breakout stations, wherein operation of said second breakout station continues until the last glass scored at said second scoring station has passed therethrough with the first breakout station remaining inoperative until the first sheet scored at the first scoring station has been received therein.
Claim 7
Dependent Claim
30 words
The method of claim 1 wherein the glass sheets utilized for scoring and severing at said first and second scoring and breakout stations are of predetermined first and second dimensions.
Claim 8
Dependent Claim
94 words
The method of claim 2 wherein a glass loading station is provided in advance of the first scoring station with loading apparatus for transferring glass of either a first or a second predetermined size from first or second glass storage positions respectively to said conveyor line, and wherein the first scoring station continues to score glass until the first sheet originating from said second glass storage position has been received therein with said first scoring station then being rendered inoperative to avoid scoring glass from said second storage position to said first outline pattern.
Claim 9
Dependent Claim
95 words
The method of claim 3 wherein a glass loading station is provided in advance of the first scoring station with loading apparatus for transferring glass of either a first or a second predetermined size from first or second glass storage positions respectively to said conveyor line, and wherein the first scoring station remains inoperative until the last sheet received from the second storage position has passed therethrough, the first and second breakout stations being operated substantially simultaneously after the first sheet from the first sheet storage position has been received in the first breakout station.
Claim 10
Dependent Claim
164 words
Apparatus for scoring and severing glass sheets to predetermined outline shapes comprising; a conveyor line, first and second scoring stations disposed along said conveyor for scoring glass sheets to first and second outline patterns respectively, and first and second glass breakout stations provided on said conveyor line downstream of said first and second stations to effect breakout of glass sheets scored at said first and second scoring stations respectively, means to sequentially score a plurality of glass sheets at said first scoring station while said second scoring station is held inoperative, and means to sequentially sever said sheets along their score lines at said first glass breakout station while said second breakout station is held inoperative, and means effective to cause discontinuance of scoring and severing of said glass sheets at said first scoring and breakout stations and to effect commencement of scoring of glass sheets at said second scoring station and to effect breakout of said scored sheets at said second breakout station.
Claim 11
Dependent Claim
164 words
Apparatus for scoring and severing glass sheets to predetermined outline shapes comprising; a conveyor line, first and second scoring stations disposed along said conveyor for scoring glass sheets to first and second outline patterns respectively, and first and second glass breakout stations provided on said conveyor line downstream of said first and second stations to effect breakout of glass sheets scored at said first and second scoring stations respectively, means to sequentially score a plurality of glass sheets at said first scoring station while said second scoring station is held inoperative, and means to sequentially sever said sheets along their score lines at said first glass breakout station while said second breakout station is held inoperative, and means effective to cause discontinuance of scoring and severing of said glass sheets at said first scoring and breakout stations and to effect commencement of scoring of glass sheets at said second scoring station and to effect breakout of said scored sheets at said second breakout station.
Claim 12
Dependent Claim
60 words
Apparatus as defined in claim 7 including means to hold said second breakout sTation inoperative after commencement of scoring at said second scoring station until the last sheet scored at said first scoring station has passed therethrough, and means effective to hold said second scoring station inoperative until the last sheet scored at said first scoring station has passed therethrough.
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |