US3916913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vine crop harvester pinch off roller with inserts
Assignee: FMC Corp
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Filing: 1974-03-21
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Granted: 1975-11-04
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Expires: 1994-03-21
Abstract
Abstract One of the snapping rolls of a once over cucumber harvester has a steel hub formed with axial undercut grooves and inserts cut from A-size V-belt material projecting from the grooves. The preferred inserts are formed of extended urethane material but they can also be formed of V-belt material having layers of reinforcement in the rubber core matrix and wrapped with fabric.
Inventors
- 👤 Olin L Looker
- 👤 Robert A Johnson
- 👤 Frank F Scribner
- 👤 Larry L Slates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:36
CPC Classifications
A; A01; A01D; A01D33/00; A01D33/02; A01D45/00; A01D45/008
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
In a harvester for vine crops such as cucumbers, said harvester having a mobile frame, conveyor means for picking up a mass of vines and attached crop and delivering the mass to the nip of a pair of elongated contra-rotating cylindrical snapping rolls for pinching the crop off the vines as the vines are pulled through the rollers; the improvement wherein one of said snapping rolls is formed with a plurality of axially extending, undercut grooves, the contours of which lie in an isoscles trapezoid, and elongated axially extending, vine pull augmenting, trapezoidal section insert strips complementary to and mounted in said grooves, said strips each comprising a body of elastomeric, homogenously wear resistant material, said grooves and inserts having relative radial dimensions such that said inserts project past the periphery of said one snapping roller by a distance of about 3/32 inches.
Claim 2
Dependent Claim
143 words
In a harvester for vine crops such as cucumbers, said harvester having a mobile frame, conveyor means for picking up a mass of vines and attached crop and delivering the mass to the nip of a pair of elongated contra-rotating cylindrical snapping rolls for pinching the crop off the vines as the vines are pulled through the rollers; the improvement wherein one of said snapping rolls is formed with a plurality of axially extending, undercut grooves, the contours of which lie in an isoscles trapezoid, and elongated axially extending, vine pull augmenting, trapezoidal section insert strips complementary to and mounted in said grooves, said strips each comprising a body of elastomeric, homogenously wear resistant material, said grooves and inserts having relative radial dimensions such that said inserts project past the periphery of said one snapping roller by a distance of about 3/32 inches.
Claim 3
Dependent Claim
22 words
The harvester roll of claim 1, wherein said inserts are about 1/2 inch wide at their base and about 5/16 inch thick.
Claim 4
Dependent Claim
18 words
The harvester roll of claim 1, wherein said inserts are formed of an extruded, flexible elastomeric urethane material.
Claim 5
Dependent Claim
19 words
The harvester roll of claim 3, wherein said inserts have a Shore durometer of about 85 on scale A.
Claim 6
Dependent Claim
23 words
The harvester roll of claim 3, wherein the other of said snapping rolls is a steel roll having a cover of rubberlike material.
Claim 7
Dependent Claim
28 words
The harvester roll of claim 1, wherein said inserts are formed of vulcanized V-belt material having a rubber core that is substantially filled with layers of reinforcing material.
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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |