US4711279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for shaving the sides of tree trunks
Assignee: Gebr LINCK MASCHINENFABRIK und EISENGIESSEREI "GATTERLINCK" A CORP OF GERMANY
•
Filing: 1985-04-25
•
Granted: 1987-12-08
•
Expires: 2005-04-25
Abstract
Abstract Two circular saws are arranged with their rotary axes parallel to each other and driven in opposite rotational directions. The flight circles of the two saws overlap each other. The cutting edges each extend, without touching, into the gaps of the respective other saw. The saws are driven in forced synchronism.
Inventors
- 👤 Alfred Reuter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:24
CPC Classifications
B; B27; B27B; B27B31/00; B27B31/08; B23; B23D; B23D45/00; B23D45/10; B23D45/105; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B27B1/00; B27B7/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
214 words
Apparatus for cutting wood logs for the production of sideboards and chips comprising: means for displacing wood logs, an upstream log cutter including a pair of upstream side cutters for cutting opposite first sides of a log as the log is displaced, and a downstream log cutter arranged downstream of said upstream log cutter and including a pair of downstream side cutters for cutting opposite second sides of the log. each of said upstream and downstream side cutters comprising two cooperating rotary tools rotatable about parallel axes, said axes oriented at acute angles relative to vertical, each of said tools including: a knife head carrying a plurality of circumferentially spaced cutting edges, a first circular saw blade mounted coaxially at an end of said knife head and including a plurality of circumferentially spaced cutting edges, and a second circular saw blade spaced coaxially from said first saw blade and including a plurality of circumferentially spaced cutting edges, said two knife heads of each said side cutter having their cutting edges circumferentially offset and in intermeshing relationship, said two first saw blades of each side cutter having their cutting edges circumferentially offset and in intermeshing relationship, said two second saw blades of each side cutter having their cutting edges circumferentially offset and in intermeshing relationship.
Claim 2
Dependent Claim
214 words
Apparatus for cutting wood logs for the production of sideboards and chips comprising: means for displacing wood logs, an upstream log cutter including a pair of upstream side cutters for cutting opposite first sides of a log as the log is displaced, and a downstream log cutter arranged downstream of said upstream log cutter and including a pair of downstream side cutters for cutting opposite second sides of the log. each of said upstream and downstream side cutters comprising two cooperating rotary tools rotatable about parallel axes, said axes oriented at acute angles relative to vertical, each of said tools including: a knife head carrying a plurality of circumferentially spaced cutting edges, a first circular saw blade mounted coaxially at an end of said knife head and including a plurality of circumferentially spaced cutting edges, and a second circular saw blade spaced coaxially from said first saw blade and including a plurality of circumferentially spaced cutting edges, said two knife heads of each said side cutter having their cutting edges circumferentially offset and in intermeshing relationship, said two first saw blades of each side cutter having their cutting edges circumferentially offset and in intermeshing relationship, said two second saw blades of each side cutter having their cutting edges circumferentially offset and in intermeshing relationship.
Claim 3
Dependent Claim
14 words
Apparatus according to claim 1, wherein each of said acute angles is 45 degrees.
Claim 4
Dependent Claim
49 words
Apparatus according to claim 1 including a first drive motor rotatably connected to all four tools of said upstream log cutter by means of positive non-slip gearing, and a second drive motor rotatably connected to all four tools of said downstream log cutter by means of positive non-skip gearing.
Claim 5
Dependent Claim
72 words
Apparatus according to claim 2, wherein each said gearing comprises toothed gears coaxially arranged on said tools, and a pair of belts carrying teeth on each side and connected to said toothed gears such that said knife head, first saw blade, and second saw blade of each tool rotate in an opposite direction with respect to said knife head, said first saw blade, and second saw blade of a cooperating said tool.
Claim 6
Dependent Claim
92 words
Apparatus according to claim 1, wherein said first and second saw blades of each said tool are arranged to cut a sideboard from the log, and further including a first set of guide rolls arranged to engage and support said first sides of the log, and a second set of guide rolls arranged to engage and support said second sides of the log, said first and second sets of guide rolls disposed downstream of said downstream log cutter, said first and second sets of guide rolls being alternately retractable from the log.
References Cited (Backward Citations)
US3487866A
Cited
US3457978A
Cited
DE1905744A1
Cited
US3934630A
Cited
DE2928949A1
Cited
US4327789A
Cited
US4239069A
Cited
DE2947190A1
Cited
US4300604A
Cited
DE3222824A1
Cited
DE3209747A1
Cited
US4561477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |