Patent US3750727A successfully refreshed from Google Patents.
US3750727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Small wood sawmill
Assignee: Individual
•
Filing: 1971-09-07
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Granted: 1973-08-07
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Expires: 1991-09-07
Abstract
Abstract A method and apparatus for converting small-diameter logs into dimensional lumber in which defects and imperfections such as knots and rot are removed by severing and removing full-diameter sections containing said defects. The remaining clear wood is cut into suitable lengths for dimensional lumber and sawn into boards of desired proportions.
Inventors
- 👤 L Ord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:01
CPC Classifications
B; B27; B27B; B27B1/00; B27G; B27G1/00; B65; B65H; B65H1/00; B65H1/08; B65H1/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
127 words
A method of producing dimensional lumber from small diameter logs which comprises the steps of: 1. feeding said logs to a cut-off saw and severing imperfections from said log by the removal of full-diameter sections containing said imperfections from the log; 2. conveying said sectioned logs to a second cut-off saw for severing said sections into log lengths corresponding to desired board lengths; 3. conveying said log sections cut to length to a saw for the forming of at least one flat face on the said log; 4. rotating said log on a conveyor with the flat face down; 5. conveying said log with the flat face down to a gang saw for cutting said log into a plurality of product boards of the aforesaid desired lengths.
Claim 2
Independent Claim
127 words
A method of producing dimensional lumber from small diameter logs which comprises the steps of: 1. feeding said logs to a cut-off saw and severing imperfections from said log by the removal of full-diameter sections containing said imperfections from the log; 2. conveying said sectioned logs to a second cut-off saw for severing said sections into log lengths corresponding to desired board lengths; 3. conveying said log sections cut to length to a saw for the forming of at least one flat face on the said log; 4. rotating said log on a conveyor with the flat face down; 5. conveying said log with the flat face down to a gang saw for cutting said log into a plurality of product boards of the aforesaid desired lengths.
Claim 3
Dependent Claim
21 words
conveying said sectioned logs to a second cut-off saw for severing said sections into log lengths corresponding to desired board lengths;
Claim 4
Dependent Claim
21 words
conveying said sectioned logs to a second cut-off saw for severing said sections into log lengths corresponding to desired board lengths;
Claim 5
Dependent Claim
23 words
conveying said log sections cut to length to a saw for the forming of at least one flat face on the said log;
Claim 6
Dependent Claim
23 words
conveying said log sections cut to length to a saw for the forming of at least one flat face on the said log;
Claim 7
Dependent Claim
11 words
rotating said log on a conveyor with the flat face down;
Claim 8
Dependent Claim
11 words
rotating said log on a conveyor with the flat face down;
Claim 9
Dependent Claim
27 words
conveying said log with the flat face down to a gang saw for cutting said log into a plurality of product boards of the aforesaid desired lengths.
Claim 10
Dependent Claim
27 words
conveying said log with the flat face down to a gang saw for cutting said log into a plurality of product boards of the aforesaid desired lengths.
References Cited (Backward Citations)
US2652864A
Cited
US3650307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |