Patent US3661192A successfully refreshed from Google Patents.
US3661192A
Expired / Lapsed
US
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Peripheral chipper for round log sections
Assignee: Nicholson Manufacturing Co
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Filing: 1969-12-08
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Granted: 1972-05-09
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Expires: 1989-12-08
Abstract
Abstract A rotating chipping drum carrying a spiral row of bits is mounted in a hollow body with a portion of its periphery exposed to a chipping chamber for holding log sections to be chipped. The rotative axis of the chipping drum may be inclined to urge a log section toward one end of the chipping chamber. Each bit includes side plate portions arranged at dihedral angles to a central plate portion and is clamped between bit-holding blocks with the bit cutting edge projecting beyond the periphery of the chipping drum.
Inventors
- 👤 Thomas W Nicholson
- 👤 Ray B Jorgensen
- 👤 Stanley Donald Vanek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:19
CPC Classifications
B; B27; B27L; B27L11/00; B27L11/002; B27L11/005; B27L11/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
137 words
A peripheral chipper comprising a hollow body having therein a chipping chamber, a rotary chipping drum including a plurality of bits arranged in a spiral row around the periphery of said chipping drum and having cutting edges projecting generally tangentially from the periphery of said drum, and means mounting said chipping drum below said chipping chamber for rotation with a portion of its periphery exposed to said chipping chamber for engagement by a log section in said chamber, said chipping chamber including a wall toward which the upper portion of the periphery of said drum moves including an upper substantially vertical portion extending downward from the upper edge of said chipping chamber and a fixed lower portion converging from said substantially vertical upper portion at an acute angle to the adjacent portion of said chipping drum periphery.
Claim 2
Dependent Claim
137 words
A peripheral chipper comprising a hollow body having therein a chipping chamber, a rotary chipping drum including a plurality of bits arranged in a spiral row around the periphery of said chipping drum and having cutting edges projecting generally tangentially from the periphery of said drum, and means mounting said chipping drum below said chipping chamber for rotation with a portion of its periphery exposed to said chipping chamber for engagement by a log section in said chamber, said chipping chamber including a wall toward which the upper portion of the periphery of said drum moves including an upper substantially vertical portion extending downward from the upper edge of said chipping chamber and a fixed lower portion converging from said substantially vertical upper portion at an acute angle to the adjacent portion of said chipping drum periphery.
Claim 3
Dependent Claim
63 words
The chipper defined in claim 1, in which the drum mounting means mounts the chipping drum with the upper side of its periphery inclined for urging a log section in the chipping chamber toward the lower portion of the drum periphery upper side, and the lower end wall of the chipping chamber is substantially perpendicular to the upper side of the drum periphery.
Claim 4
Dependent Claim
24 words
The chipper defined in claim 1, and chip-removing means disposed within the chipping drum and extending through substantially the entire length of the drum.
Claim 5
Dependent Claim
84 words
The chipper defined in claim 1, in which the periphery of the chipping drum has in it apertures arranged in a spiral row, each adapted to receive a single cutter bit, each bit is a bent plate, and a pair of bit-holding blocks for each bit including an inner block and an outer block between which a bit is clamped, said inner block being permanently secured in an aperture of the chipping drum and said outer block being removably secured to said inner block.
Claim 6
Dependent Claim
33 words
The chipper defined in claim 1, and a notched anvil mounted adjacent to the periphery of the chipping drum on the chipping chamber wall convergent with an adjacent portion of the drum periphery.
Claim 7
Dependent Claim
33 words
The chipper defined in claim 3, in which the chip-removing means includes a deflector plate inclined axially of the chipping drum for scooping the chips endwise out of the drum during its rotation.
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 |