US3715873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Harvesting and ensilage cutting apparatus
Assignee: Individual
•
Filing: 1971-11-23
•
Granted: 1973-02-13
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Expires: 1991-11-23
Abstract
Abstract Harvesting and ensilage cutting apparatus, comprising a chopper rotor in a housing with a front inlet opening, a pair of cooperating feed rolls mounted for counterrotation about substantially vertical axes closely in advance of said front inlet opening, stalk cutting means below said pair of feed rolls and a pair of forwardly extending guide means for guiding row crop toward said pair of feed rolls.
Inventors
- 👤 P Zweegers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:54
CPC Classifications
A; A01; A01F; A01F29/00; A01F29/09; A01F29/095; A01D; A01D43/00; A01D43/08; A01D43/081; A01D43/082; A01D45/00; A01D45/02; A01D57/00; A01F29/02; A01F29/10
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
108 words
Harvesting and ensilage cutting apparatus comprising a chopper rotor in a housing with a front inlet opening, a pair of cooperating feed rolls mounted for counter-rotation about substantially vertical axes closely in advance of said front inlet opening, stalk cutting means below said pair of feed rolls and a pair of forwardly extending guide means for guiding row crop toward said pair of feed rolls in which said stalk cutting means comprise a counter knife and an annular series of knives mounted against the lower end of each of the two feed rolls for cooperation of each of said knives with said counter knife in a shearing action.
Claim 2
Dependent Claim
108 words
Harvesting and ensilage cutting apparatus comprising a chopper rotor in a housing with a front inlet opening, a pair of cooperating feed rolls mounted for counter-rotation about substantially vertical axes closely in advance of said front inlet opening, stalk cutting means below said pair of feed rolls and a pair of forwardly extending guide means for guiding row crop toward said pair of feed rolls in which said stalk cutting means comprise a counter knife and an annular series of knives mounted against the lower end of each of the two feed rolls for cooperation of each of said knives with said counter knife in a shearing action.
Claim 3
Dependent Claim
108 words
Harvesting and ensilage cutting apparatus comprising a chopper rotor in a housing with a front inlet opening, a pair of cooperating feed rolls mounted for counter-rotation about substantially vertical axes closely in advance of said front inlet opening, stalk cutting means below said pair of feed rolls and a pair of forwardly extending guide means for guiding row crop toward said pair of feed rolls in which said stalk cutting means comprise a counter knife and an annular series of knives mounted against the lower end of each of the two feed rolls for cooperation of each of said knives with said counter knife in a shearing action.
Claim 4
Dependent Claim
108 words
Harvesting and ensilage cutting apparatus comprising a chopper rotor in a housing with a front inlet opening, a pair of cooperating feed rolls mounted for counter-rotation about substantially vertical axes closely in advance of said front inlet opening, stalk cutting means below said pair of feed rolls and a pair of forwardly extending guide means for guiding row crop toward said pair of feed rolls in which said stalk cutting means comprise a counter knife and an annular series of knives mounted against the lower end of each of the two feed rolls for cooperation of each of said knives with said counter knife in a shearing action.
Claim 5
Dependent Claim
52 words
Apparatus according to claim 1, in which said knives cooperate with the counter knife which is stationary and mounted transversely under the pair of feed rolls, the knives of the two rolls intermeshing without touching each other, such that the counter knife cooperates in alternation with knives of the two feed rolls.
Claim 6
Dependent Claim
29 words
Apparatus according to claim 2, in which the cutting edge of the counter knife is disposed substantially in the plane containing the axis of the pair of feed rolLs.
Claim 7
Dependent Claim
32 words
Apparatus according to claim 1, in which a short duct forms a substantially closed passage between the periphery of the pair of feed rolls and the inlet opening of the chopper housing.
Claim 8
Dependent Claim
28 words
Apparatus according to claim 4, in which a separate, quickly replaceable counter knife is mounted along the rear edge of one of the side walls of said duct.
Claim 9
Dependent Claim
23 words
Apparatus according to claim 5, in which said last mentioned counter knife extends through a slot in the lower wall of said duct.
Claim 10
Dependent Claim
29 words
Apparatus according to claim 5, in which a clamping piece holds said last mentioned counter knife in a longitudinal slot of the associated side wall of the inlet duct.
Claim 11
Dependent Claim
26 words
Apparatus according to claim 5, in which the last mentioned counter knife comprises a hardened steel strip and is bent along at least one longitudinal line.
Claim 12
Dependent Claim
33 words
Apparatus according to claim 8, in which the cross section of the last mentioned counter knife is symmetrical such that two parallel longitudinal side edges can alternately be used as a cutting edge.
Claim 13
Dependent Claim
50 words
Apparatus according to claim 9, in which the operative part of the last mentioned counter knife extends along the side wall of the inlet duct and the remaining part of the counter knife is enclosed between the clamping piece and the slot in the side wall of the inlet duct.
Claim 14
Dependent Claim
30 words
Apparatus according to claim 4, in which the rear edge of one of the upstanding side walls of said duct serves as a counter knife for the chopper rotor knives.
Claim 15
Dependent Claim
22 words
Apparatus according to claim 1, in which the outlet of the chopper rotor is connected to a flexible ribbed thermoplastic discharge tube.
Claim 16
Dependent Claim
49 words
Apparatus according to claim 3, in which the outer portions of the cutting circle of the knives at the lower edges of the feed rolls are shielded by said pair of guide means which extend forwardly from behind the feed rolls along the outer edges of the feed rolls.
Claim 17
Dependent Claim
59 words
Apparatus according to claim 1, in which said guide means include guide arms of channel section, the upper flange of each channel section guide arm having an inner edge which is curved at its rearward end, said curved end being slightly spaced from the associated feed roll for shielding the knives at the lower edge of each feed roll.
Claim 18
Dependent Claim
60 words
Apparatus according to claim 1, in which said guide means include guide arms, rearwardly and inwardly inclined tines being mounted at one end on said guide arms, the free ends of the tines on the respective guide arms being spaced from one another at the centerline between said guide arms, and the tines being resiliently secured to said guide arms.
Claim 19
Dependent Claim
35 words
Apparatus according to claim 1, in which said guide means include guide arms, movable extensions mounted on said guide arms adapted to be moved rearwardly by the stalks passing between said pair of guide arms.
Claim 20
Dependent Claim
31 words
Apparatus according to claim 16, wherein a plurality of vertical shafts are mounted on each said guide arm, and outwardly extending tines being mounted for free rotation on each said shaft.
Claim 21
Dependent Claim
26 words
Apparatus according to claim 1, in which a plurality of longitudinally extending ribs are mounted along the circumference of each of the pair of feed rolls.
Claim 22
Dependent Claim
48 words
Apparatus according to claim 18 wherein a peripheral flange is mounted at the lower end of each feed roll, and a forwardly inclined strip is mounted in the corner between the front surface of each said rib and said flange at the lower end of each feed roll.
Claim 23
Dependent Claim
28 words
Apparatus according to claim 18, in which said ribs are mounted to the periphery of each feed roll so as to be displaceable in a substantially radial direction.
Claim 24
Dependent Claim
22 words
Apparatus according to claim 20, in which the cross section of each said rib is V-shaped with their open ends facing inwardly.
Claim 25
Dependent Claim
13 words
Apparatus according to claim 20, in which the ribs are outwardly spring biased.
Claim 26
Dependent Claim
30 words
Apparatus according to claim 20, in which the rear edge of each rib, viewed in the direction of rotation of the associated feed roll, is pivotably connected with said roll.
Claim 27
Dependent Claim
49 words
Apparatus acCording to claim 20, in which the periphery of each feed roll is provided with a series of longitudinally extending slots in which the radially displaceable ribs are so mounted that they close the associated slot in any assumed position of the rib with respect to the roll.
Claim 28
Dependent Claim
44 words
Apparatus according to claim 24, in which the front leg of the V-shaped cross section of each rib, viewed in the direction of rotation, is bent with a radius of curvature, the center of which substantially coincides with the pivot axis of the rib.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |