US4067370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic plank planing machine
Assignee: Individual
•
Filing: 1976-10-18
•
Granted: 1978-01-10
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Expires: 1996-10-18
Abstract
Abstract An automatic plank planing machine, and more particularly a planing machine wherein two feeding rollers are vertically movable to compensate for warp in planks to be planed in order to provide an accurate and smooth planing operation.
Inventors
- 👤 Chen-Wan Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:54
CPC Classifications
B; B27; B27C; B27C1/00; B27C1/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
201 words
An automatic lumber planing machine comprising: a machine body; a planing table mounted on said machine body and having follower roller troughs defined therein; two movable roller housings, each movably mounted on said planing table to be disposed thereabove; conveyor rollers mounted on each of said roller housings; a follower roller mounted in each of said planing table follower roller troughs; adjustable set screws connecting said housings to said machine body; spring means mounted on said machine body and connected to each said housings; a stationary member secured to said machine body between said two roller housings; a horizontal rod mounted on each of said movable housings; two bars each having opposite ends and each being pivotally connected to said stationary member, each bar having a balance weight on one end thereof with the other end of said each bar being forced upwardly against said horizontal rod by said weight so that each roller housing can be moved upwardly to allow said conveyor roller to follow a natural warp of a plank being put through the planing machine, whereby the frictional driving engagement of said rollers with the plank will not exert sufficient pressure on that plant to deform the same.
Claim 2
Dependent Claim
201 words
An automatic lumber planing machine comprising: a machine body; a planing table mounted on said machine body and having follower roller troughs defined therein; two movable roller housings, each movably mounted on said planing table to be disposed thereabove; conveyor rollers mounted on each of said roller housings; a follower roller mounted in each of said planing table follower roller troughs; adjustable set screws connecting said housings to said machine body; spring means mounted on said machine body and connected to each said housings; a stationary member secured to said machine body between said two roller housings; a horizontal rod mounted on each of said movable housings; two bars each having opposite ends and each being pivotally connected to said stationary member, each bar having a balance weight on one end thereof with the other end of said each bar being forced upwardly against said horizontal rod by said weight so that each roller housing can be moved upwardly to allow said conveyor roller to follow a natural warp of a plank being put through the planing machine, whereby the frictional driving engagement of said rollers with the plank will not exert sufficient pressure on that plant to deform the same.
Claim 3
Dependent Claim
102 words
The automatic lumber planing machine of claim 1, further including a drive means mounted on the machine body and having a sprocket chain attached thereto, said sprocket chain being attached to one of said conveyor rollers to drive said roller in rotary motion, a sprocket gear on the other conveyor roller, and a second sprocket chain attaching said one conveyor roller to said other conveyor roller sprocket gear so that as said first conveyor roller is rotationally driven by said drive means said other conveyor roller is driven in the same direction and at the same speed by said second sprocket chain.
Claim 4
Dependent Claim
76 words
The automatic lumber planing machine of claim 2, further including a roller shaft in each of said roller housings, an arm having one end thereof pivotally secured to said stationary member and the other end thereof secured to one of said roller shafts, and a plurality of connecting bars each pivotally attached at each end to a roller housing to prevent movement of said roller housing left or right of the axis of said planing table.
Claim 5
Dependent Claim
46 words
The automatic lumber planing machine of claim 3, further including a handwheel attached to each movable roller housing, and a rod connecting each handwheel to a corresponding roller so that movement of said handwheel causes movement of said conveyor roller via movement of said roller housing.
Claim 6
Dependent Claim
45 words
The automatic lumber planing machine of claim 4, further including a pressure plate assembly and a connecting rod connecting said pressure plate assembly to one of said handwheels so that movement of said handwheel is transmitted to said pressure plate assembly via said connecting rod.
Claim 7
Dependent Claim
51 words
The automatic lumber planing machine of claim 5, wherein said pressure plate assembly includes a base and a plurality of pressure plates connected to said base, each pressure plate having a cushioning member thereon with said cushioning members each including cushioning material located between said each pressure plate and said base.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |