US3661329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means and method for producing wood chips
Assignee: Beloit Corp
•
Filing: 1970-07-09
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Granted: 1972-05-09
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Expires: 1990-07-09
Abstract
Abstract Rotary chipper for producing chips for pulp making is constructed to cause impact of chips from rotary disc cutter at angle such as to cause breakup of cards but minimizing production of pins and fines.
Inventors
- 👤 William C Smith
- 👤 Wilfred Farnworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:29
CPC Classifications
B; B27; B27L; B27L11/00; B27L11/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
29 words
A chipper as set forth in claim 1 including means mounting said impact means to permit adjustment of the angle of said impact surface relative to said predetermined path.
Claim 2
Dependent Claim
34 words
A chipper as set forth in claim 1, said impact means comprising a plate having a substantially planar impact surface portion and a merging concave surface for receiving chips from said planar surface portion.
Claim 3
Dependent Claim
25 words
A chipper as set forth in claim 1 wherein said impact surface extends at an angle of about fifteen degrees to said predetermined chip path.
Claim 4
Independent Claim
96 words
A method of preparing wood chips for the making of pulp which comprises: feeding a piece of wood to a rotary disc chipper so as to slice lengths of predetermined amount from the end of said piece and crosswise of the grain thereof, causing the lengths so cut to impinge upon a first surface inclined at an angle of between 5 and 35* to the path of travel of said chips as they emerge from said disc, and thereafter retarding the speed of said chips before permitting further impact of said chips upon a further surface.
Claim 5
Dependent Claim
32 words
The method of claim 5 wherein the chips are passed from said first surface onto a concavely curved surface so as to reduce the velocity of said chips and minimize breakage thereof.
Claim 6
Independent Claim
86 words
A method of preparing wood chips for the making of pulp which comprises: feeding a piece of wood generally perpendicularly to a high speed rotary disc chipper so as to Slice crosswise of the grain chips of predetermined length from the end of said piece, and causing the chips so cut to impinge upon a surface inclined at an acute angle of less than about 35* to the path of travel of said chips as they emerge from said disc, thereby minimizing breakage of said chips.
Claim 7
Dependent Claim
18 words
A method as set forth in claim 7 wherein said acute angle is between about 5* and 35*.
Claim 8
Dependent Claim
14 words
A method as set forth in claim 7 wherein said acute angle is 15*.
Claim 9
Dependent Claim
14 words
The wood chipper of claim 1 wherein said conveying means comprises pneumatic conveyor means.
Claim 10
Dependent Claim
32 words
The wood chipper of claim 7 wherein said pneumatic conveyor means creates a stream of air having a direction component parallel to said path for carrying the chips away from said chipper.
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |