US3903771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for edging and resawing lumber
Assignee: Albany International Industries Inc
•
Filing: 1972-01-21
•
Granted: 1975-09-09
•
Expires: 1992-01-21
Abstract
Abstract A battery of vertical band saws is adjustable to vary the spacing between bands and is used to both edge and resaw material. A preparation table upstream from the saws receives material from a recirculating conveyor or from a head rig, orients the material in the most desirable position for cutting and transfers the material endwise to an infeed table. The infeed table has toothed conveyor rolls for feeding the material positively into the saws, an overhead pneumatic roll for engaging the top of the material while edging and driven side press rolls for pressing the material against a line bar when resawing. Downstream from the saws an edge picker table has a pair of longitudinal separating plates normally aligned with the two outside saws for separating edge trimmings from the material to be processed into lumber. The plates are withdrawn from alignment with the saws when resawing. A sweep table receives material from the edge picker table and includes sweep fingers which sweep across the table for transferring material sideways to the recirculating conveyor and pivot downwardly to permit transfer of material endwise from such table.
Inventors
- 👤 Rene Fritz
- 👤 Rene Eugene Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:12
CPC Classifications
B; B27; B27B; B27B31/00; B27B31/08; B27B15/00; B27B15/08; B27B25/00; B27B25/02; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2074; Y10T83/2077; Y10T83/2092; Y10T83/2096; Y10T83/2098; Y10T83/2192; Y10T83/22; Y10T83/525; Y10T83/538; Y10T83/647; Y10T83/6584; Y10T83/6587
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
173 words
An edger-resaw apparatus for processing logs into lumber comprising in combination: a saw section including multiple vertical band saws, means for changing the transverse spacing between said saws so that boards of different thicknesses can be produced by said saws and for repositioning said saws so that less than all of said saws can be used during a sawing cycle and so that said saws can be used for both edging and resawing material, an infeed section including means for orienting and feeding elongated material in a straight path longitudinally through said saw section, an outfeed section for receiving cut material from said saw section including means for separating edge trimmings from said cut material and means for directing said cut material selectively in at least two different directions downstream of said saw section, and recirculating means for receiving cut material including boards from said outfeed section directed in one of said two directions and recirculating said cut material including boards back to said infeed section for further processing through said saw section.
Claim 2
Dependent Claim
173 words
An edger-resaw apparatus for processing logs into lumber comprising in combination: a saw section including multiple vertical band saws, means for changing the transverse spacing between said saws so that boards of different thicknesses can be produced by said saws and for repositioning said saws so that less than all of said saws can be used during a sawing cycle and so that said saws can be used for both edging and resawing material, an infeed section including means for orienting and feeding elongated material in a straight path longitudinally through said saw section, an outfeed section for receiving cut material from said saw section including means for separating edge trimmings from said cut material and means for directing said cut material selectively in at least two different directions downstream of said saw section, and recirculating means for receiving cut material including boards from said outfeed section directed in one of said two directions and recirculating said cut material including boards back to said infeed section for further processing through said saw section.
Claim 3
Dependent Claim
43 words
Apparatus according to claim 1 wherein there are at least two said saws positionable first in cutting positions for edging a log or board conveyed through said saw section and positionable secondly for reducing the edged log or board into multiple smaller boards.
Claim 4
Dependent Claim
70 words
Apparatus according to claim 1 including control means for controlling the positioning of said saws, said control means including means for superimposing on a log or board or image thereof a series of equally spaced-apart parallel lines with a first one of said lines being aligned with the saw line of one of said saws for estimating the number of saw cuts obtainable from a given log, cant or board.
Claim 5
Dependent Claim
68 words
Apparatus according to claim 3 wherein said lines are consecutively numbered and spaced to indicate directly the number of cuts obtainable from a log or board and wherein said control means includes a control panel with a series of depressible numbered buttons with numbers corresponding to said numbered lines, said buttons when depressed being operable to determine the optimum settings for said saws during the next cutting cycle.
Claim 6
Dependent Claim
71 words
Apparatus according to claim 1 wherein said infeed section includes infeed conveyor table means, line bar means extending longitudinally of said table means into said saw section, retractable side pressing means selectively movable against one side of said material to press said material against said line bar means in said saw section, and retractable overhead pressing means selectively engageable with a top surface portion of said material adjacent said saw section.
Claim 7
Dependent Claim
41 words
Apparatus according to claim 5 wherein said outfeed section comprises a second conveyor table means extending downstream from said saws and a second retractable overhead pressing means selectively engageable with a top surface portion of said material adjacent said saw section.
Claim 8
Dependent Claim
54 words
Apparatus according to claim 1 wherein said outfeed section includes a first outfeed section adjacent said saws for separating lumber edgings from the usable lumber portion of said material and a second outfeed section downstream from said first section for selectively conveying said usable lumber portion in either one of at least two directions.
Claim 9
Dependent Claim
110 words
Apparatus according to claim 5 wherein said infeed section includes preparation table means upstream from said conveyor table means, said preparation table means including side transfer means movable vertically between positions above and below the upper level of said preparation table means for transferring material sideways onto said preparation table means from either side of said table means and into variable transverse positions thereon, flipper means for turning said material clockwise and counterclockwise about its longitudinal axis on said preparation table mean, and straightedge means in longitudinal alignment with said line bar means, and means for transferring material lengthwise from said preparation table means onto said infeed conveyor table means.
Claim 10
Dependent Claim
102 words
Apparatus according to claim 1 wherein said outfeed section includes an outfeed conveyor table downstream from said saws, said outfeed conveyor table including separating means for separating cut portions of material severed by said saws and conveying the separate portions in different directions downstream from said saws said separating meanS being aligned longitudinally with at least one of said saws, and moving means for maintaining alignment of said separating means with its aligned saw upon movement of said saw, and means operable independently of said moving means for selectively moving said separating means to an inoperative position with respect to said saws.
Claim 11
Dependent Claim
68 words
Apparatus according to claim 9 wherein said separating means includes a pair of transversely spaced-apart and longitudinally extending upright separating plates, a first one of said plates being aligned with one of said saws and a second one of said plates being aligned with another one of said saws, said independently operable means being operable to move said plates in opposite directions out of alignment with said saws.
Claim 12
Dependent Claim
85 words
Apparatus according to claim 9 wherein said separating means includes a plurality of longitudinally aligned sweep fingers mounted by said outfeed conveyor table, said moving means being operable to shift said table to maintain longitudinal alignment of said fingers with one of said saws, said independently operable means being operable to pivot said fingers downwardly below the upper level of said conveyor table and including additional means for moving said fingers together in either direction across said conveyor table to sweep material from said table.
Claim 13
Dependent Claim
85 words
Apparatus according to claim 10 wherein said separating means includes a plurality of longitudinally aligned sweep fingers mounted by said outfeed conveyor table, said moving means being operable to shift said table to maintain longitudinal alignment of said fingers with one of said saws, said independently operable means being operable to pivot said fingers downwardly below the upper level of said conveyor table and including additional means for moving said fingers together in either direction across said conveyor table to sweep material from said table.
References Cited (Backward Citations)
US1487649A
Cited
US1920584A
Cited
US2077119A
Cited
US3139125A
Cited
US3304971A
Cited
US3368597A
Cited
US3401785A
Cited
US3693675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |