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Patent US3584666A successfully refreshed from Google Patents.
US3584666A
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US
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Apparatus for detection of obstruction between log and roller bar on veneer lathe assembly
Assignee: Potlatch Forests Inc
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Filing: 1969-09-22
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Granted: 1971-06-15
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Expires: 1989-09-22
Abstract
Abstract A detection system is included ii the control circuit for sensing the current flowing to a roller bar drive motor on a veneer lathe assembly. The detection system causes the roller bar to be moved away from the log when the current load exceeds a prescribed value indicating that an obstruction is wedged between the roller bar and the log being peeled.
Inventors
- 👤 Marvin M Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:36
CPC Classifications
B; B27; B27L; B27L5/00; B27L5/02; B27L5/025
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
135 words
In a veneer lathe assembly having: a. a carriage frame with a veneer knife mounted thereon for peeling logs mounted between rotating lathe spindles to form wood veneer; b. a roller bar rotatably and reciprocably mounted on the carriage frame; c. a motor mounted on the carriage frame for rotating the roller bar; d. a drive means mounted on the carriage frame for reciprocating the roller to and from the log adjacent to the veneer knife; e. a control means for controlling the motor and drive means; and f. wherein the control means includes the improvement of a detection means operatively connected to the motor for sensing the load on the motor and for sensing when the load increases above a prescribed value indicating that an obstruction exists between the roller bar and the log.
Claim 2
Dependent Claim
135 words
In a veneer lathe assembly having: a. a carriage frame with a veneer knife mounted thereon for peeling logs mounted between rotating lathe spindles to form wood veneer; b. a roller bar rotatably and reciprocably mounted on the carriage frame; c. a motor mounted on the carriage frame for rotating the roller bar; d. a drive means mounted on the carriage frame for reciprocating the roller to and from the log adjacent to the veneer knife; e. a control means for controlling the motor and drive means; and f. wherein the control means includes the improvement of a detection means operatively connected to the motor for sensing the load on the motor and for sensing when the load increases above a prescribed value indicating that an obstruction exists between the roller bar and the log.
Claim 3
Dependent Claim
44 words
In a veneer lathe assembly as defined in claim 1 wherein the detection means operates the illuminating device when the load on the motor exceeds the prescribed value to indicate to an operator that an obstruction exists between the roller bar and the log.
Claim 4
Dependent Claim
50 words
In a veneer lathe assembly as defined in claim 2 wherein the motor is an electrical motor and wherein the detection means includes a current relay that is sensitive to the electRical current to the motor and is operated when the electrical current to the motor exceeds the prescribed value.
Claim 5
Dependent Claim
37 words
In a veneer lathe assembly as defined in claim 1 wherein the control means operates the drive means to reciprocate the roller bar from the log when the load on the motor increases above the prescribed value.
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |