Patent US4221247A successfully refreshed from Google Patents.
US4221247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Veneer lathe
Assignee: Meinan Machinery Works Inc
•
Filing: 1977-12-16
•
Granted: 1980-09-09
•
Expires: 1997-12-16
Abstract
Abstract An improved veneer lathe which cuts off a sheet of veneer from a log supported rotatably by applying a torque directly to the outer periphery of the log. An external force for cutting the log is fed from the vicinity of a knife included in the lathe. The log core is not subjected to a load attributable to a cutting resistance so that even logs of a poor quality are usable for turning veneer sheets therefrom, enhancing the yield of plywood production.
Inventors
- 👤 Hasegawa Katsuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:32
CPC Classifications
B; B27; B27L; B27L5/00; B27L5/02; B27L5/025
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
168 words
A veneer lathe comprising: means for supporting a log rotatably about its axis; a drive roller disposed in a facing relation to the log; a knife oriented in tangential relation to the log; a plurality of edge members mounted on the drive roller in at least one row around its periphery, said edge members being engageable with the log to rotate it when the drive roller is rotated; pressure means disposed around said drive roller on at least one side of said row of said edge members to face the log surface slightly ahead of the edge of said knife; and means for feeding the drive roller, the knife, and the pressure means toward the log, and means for rotating the drive roller, such that said edge members on the drive roller come into piercing engagement with the log surface to rotate the log slightly ahead of the knife edge, said feeding means being adapted to continue the feed in accordance with the decrease in the log diameter.
Claim 2
Dependent Claim
168 words
A veneer lathe comprising: means for supporting a log rotatably about its axis; a drive roller disposed in a facing relation to the log; a knife oriented in tangential relation to the log; a plurality of edge members mounted on the drive roller in at least one row around its periphery, said edge members being engageable with the log to rotate it when the drive roller is rotated; pressure means disposed around said drive roller on at least one side of said row of said edge members to face the log surface slightly ahead of the edge of said knife; and means for feeding the drive roller, the knife, and the pressure means toward the log, and means for rotating the drive roller, such that said edge members on the drive roller come into piercing engagement with the log surface to rotate the log slightly ahead of the knife edge, said feeding means being adapted to continue the feed in accordance with the decrease in the log diameter.
Claim 3
Dependent Claim
40 words
A veneer lathe as claimed in claim 1, wherein said log supporting means includes means which is operatively connected with a drive source and drives the log for rotation with a torque smaller than that necessary for cutting the log.
Claim 4
Dependent Claim
17 words
A veneer lathe as claimed in claim 2, wherein said log driving means includes a friction clutch.
Claim 5
Dependent Claim
19 words
A veneer lathe as claimed in claim 3, wherein said friction clutch includes means for adjusting its frictional force.
Claim 6
Dependent Claim
57 words
A veneer lathe as claimed in any of claims 2, 3 or 4, wherein the log under non-cutting conditions is driven by said log driving means at a peripheral speed which is higher than the peripheral speed of said drive roller under loaded cutting conditions, said drive roller being driven by drive means having an overrunning clutch.
Claim 7
Dependent Claim
30 words
A veneer lathe as claimed in claim 5, wherein said veneer lathe further comprises an auxiliary drive roller contacting the outer periphery of the log and applying rotational power thereto.
Claim 8
Dependent Claim
29 words
A veneer lathe as claimed in claim 6, wherein said auxiliary drive roller is positioned substantially on the opposite side of said drive roller with respect to the log.
Claim 9
Dependent Claim
37 words
A veneer lathe as claimed in claim 1 wherein additional edge members are carried on the outer periphery of said drive roller and are spaced from said one row of edge members axially of said drive roller.
Claim 10
Dependent Claim
46 words
A veneer lathe as claimed in claim 8, wherein said edge members are arranged also circumferentially of said drive roller to form a plurality of disc-shaped portions on said drive roller and a plurality of annular recesses alternating with said disc-shaped portions on said drive roller.
Claim 11
Dependent Claim
23 words
A veneer lathe as claimed in claim 9, wherein said edge members extend radially outwardly from the outer periphery of said drive roller.
Claim 12
Dependent Claim
36 words
A veneer lathe as claimed in claim 9, wherein said edge members are inclined at common angles forwardly with respect to direction of rotation of said drive roller from the radial direction of said drive roller.
Claim 13
Dependent Claim
59 words
A veneer lathe as claimed in any of claims 9, 10 or 11, wherein said drive roller is located in a position in which said edge members on said drive roller cut into both part of the log which is about to be cut by said knife and part of a veneer sheet just cut off from the log.
Claim 14
Dependent Claim
20 words
A veneer lathe as claimed in claim 1, wherein said pressure means is smaller in height than said edge members.
Claim 15
Dependent Claim
39 words
A veneer lathe as claimed in any of claims 9, 10, 11, 12 or 13, wherein means 11 received in said recesses to compress in a discharging direction part of a veneer sheet just cut off from the log.
Claim 16
Dependent Claim
37 words
A veneer lathe as claimed in any of claims 8, 9, 10, or 11, wherein said veneer lathe further comprises an auxiliary drive roller for contacting the outer periphery of the log and applying rotational power thereto.
Claim 17
Dependent Claim
29 words
A veneer lathe as claimed in claim 15, wherein said auxiliary drive roller is positioned substantially on the opposite side of said drive roller with respect to the log.
Claim 18
Dependent Claim
33 words
A veneer lathe according to claim 1, wherein said drive roller is disposed to bring its edge members into piercing engagement with both the log surface and the veneer sheet being cut therefrom.
Claim 19
Dependent Claim
53 words
A veneer lathe according to claim 1, further comprising a guide member disposed around the drive roller on at least one side of the edge member row for disengaging the cut-off veneer sheet from the piercing edge members, said pressure means and said guide member means being out of interference with each other.
Claim 20
Dependent Claim
32 words
A veneer lathe according to claim 1, further including resisting means disposed between said guide member and said pressure means for resisting the log rotation to compress the cut-off veneer sheet lengthwise.
Claim 21
Dependent Claim
17 words
A veneer lathe according to claim 1, wherein said drive roller is provided with an over-running clutch.
Claim 22
Dependent Claim
163 words
A veneer lathe comprising: means for supporting a log rotatably about its axis; at least one drive roller disposed in a facing relation to the log and having a plurality of edge members mounted on the drive roller in at least one row around its periphery, said edge members being engageable with the log to rotate it when the drive roller is rotated; a knife oriented in tangential relation to the log; pressure means disposed on one side of said drive roller to face the log for pressing the same slightly ahead of the knife edge; means for feeding the drive roller, the knife, and the pressure means toward the log, and means for rotating the drive roller, such that said edge members on the drive roller come into piercing engagement with the log surface to rotate the log slightly ahead of the knife edge, said feeding means being adapted to continue the feed in accordance with the decrease in the log diameter.
Claim 23
Dependent Claim
163 words
A veneer lathe comprising: means for supporting a log rotatably about its axis; at least one drive roller disposed in a facing relation to the log and having a plurality of edge members mounted on the drive roller in at least one row around its periphery, said edge members being engageable with the log to rotate it when the drive roller is rotated; a knife oriented in tangential relation to the log; pressure means disposed on one side of said drive roller to face the log for pressing the same slightly ahead of the knife edge; means for feeding the drive roller, the knife, and the pressure means toward the log, and means for rotating the drive roller, such that said edge members on the drive roller come into piercing engagement with the log surface to rotate the log slightly ahead of the knife edge, said feeding means being adapted to continue the feed in accordance with the decrease in the log diameter.
References Cited (Backward Citations)
US153365A
Cited
US435480A
Cited
US463888A
Cited
US525613A
Cited
US1641452A
Cited
US633548A
Cited
US3480053A
Cited
US4061169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-09 | 1984-03-10 | 1984-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-09 | 1988-03-10 | 1988-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-09 | 1992-03-10 | 1992-09-09 | $7700.00 | Window Closed / Lapsed |