US3599725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Row-type agricultural apparatus for thinning, hoeing or spraying of plants
Assignee: Individual
•
Filing: 1969-06-19
•
Granted: 1971-08-17
•
Expires: 1989-06-19
Abstract
Abstract Control for a row cultivator having a selectively activatable cultivating tool for operation along specified portions of a row by activation of a rotary magnet with the magnet control including a rotary cylindrical control member driven through friction drive means by a ground-engaging means at a rate proportional to the speed of movement of the cultivator along the row with the control cylinder having conductive and nonconductive surfaces of varying length at different axial positions along the cylinder engageable with a contact for controlling the length of cultivation for a given revolution of the cylinder.
Inventors
- 👤 Arnold Gego
- 👤 Heinrich Gugenhan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:04
CPC Classifications
A; A01; A01B; A01B41/00; A01B41/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
199 words
In a row-type agricultural machine having working implements selectively operable for working on discrete portions of a working stretch of a row of plants and having selectively operable electrical means connected therewith for selectively deactivating the implements to create a protected nonworked zone, the improvement comprising a control means including a source of electrical energy, a rotary cylindrical control roller formed with an external cylindrical surface including first and second circumferential control portions overlapping in the axial direction and corresponding to the protected nonworked stretch and the working stretch, drive means for drivingly rotating said control roller, switch support means mounted adjacent the periphery of said control roller means for adjusting the axial position of said switch support means with respect to said control roller, switch means mounted on said switch support means adjacent the control roller, electrical circuit means connecting said source of electrical energy to said switch means and to said selectively operable electrical means with said switch means being closed when adjacent said first circumferential control portion for activating said selectively operable electrical means to deactivate said working implements but being open when adjacent said second circumferential control portion for permitting activation of said working implements.
Claim 2
Dependent Claim
199 words
In a row-type agricultural machine having working implements selectively operable for working on discrete portions of a working stretch of a row of plants and having selectively operable electrical means connected therewith for selectively deactivating the implements to create a protected nonworked zone, the improvement comprising a control means including a source of electrical energy, a rotary cylindrical control roller formed with an external cylindrical surface including first and second circumferential control portions overlapping in the axial direction and corresponding to the protected nonworked stretch and the working stretch, drive means for drivingly rotating said control roller, switch support means mounted adjacent the periphery of said control roller means for adjusting the axial position of said switch support means with respect to said control roller, switch means mounted on said switch support means adjacent the control roller, electrical circuit means connecting said source of electrical energy to said switch means and to said selectively operable electrical means with said switch means being closed when adjacent said first circumferential control portion for activating said selectively operable electrical means to deactivate said working implements but being open when adjacent said second circumferential control portion for permitting activation of said working implements.
Claim 3
Dependent Claim
59 words
The invention of claim 1 wherein the ratio of the peripheral extents of the control portions of said control rollers as peripherally measured along circumferential arcs lying in a common plane spaced a given distance from the end of said control roller varies in accordance with the axial distance of said plane from the end of the control roller.
Claim 4
Dependent Claim
106 words
The invention of claim 2 additionally including plant detecting means, a selectively actuable stop means mounted adjacent said control roller for engaging and stopping said control roller and holding said control roller in an angular position in which said switch means is opened to permit activation of said working implements, and stop deactivating means connected to said plant detecting means for deactivating said stop means in response to the detection of a plant to release the rotary control roller to consequently subsequently deactivate said working implements upon rotation of the control roller into a position in which said first circumferential control portion is adjacent said switch.
Claim 5
Dependent Claim
102 words
The invention of claim 3 additionally including a stop surface on the periphery of said control roller, wherein said stop means comprises a pivoted lever member pivotally mounted adjacent the periphery of said roller and having a free end portion, spring means biassing said free end portion of said pivoted lever member into holding engagement with said stop surface to hold said control roller against rotation, wherein said deactivating means for said stop device comprises an electromagnet mounted adjacent said stop lever member for withdrawing said stop lever member from holding engagement with its associated stop surface upon actuation of said electromagnet.
Claim 6
Dependent Claim
30 words
The invention of claim 1 wherein said drive means for drivingly rotating said control roller includes a friction coupling capable of slippage upon resistance of said control roller to rotation.
Claim 7
Dependent Claim
46 words
The invention of claim 5 wherein said drive means for drivingly rotating said control roller additionally includes a pneumatic tire at substantially atmospheric pressure on its interior anD drive means connecting said tire to said friction coupling for driving said friction coupling and said control roller.
Claim 8
Dependent Claim
54 words
The invention of claim 4 wherein said plant-detecting means includes an electric feeler member positioned a selected distance in advance of the working implements along the direction of travel of the apparatus, electrical conduit means connecting said feeler to said electromagnet for energizing the electromagnet upon contact of the feeler member with a plant.
Claim 9
Dependent Claim
54 words
Apparatus according to claim 1, wherein the first circumferential control portion is formed of an electrically conductive surface and the second circumferential control portion is formed of an electrically nonconductive surface, the switching means including a sliding contact engaging with the circumference of the control roller so as to sequentially engage said control portions.
Claim 10
Dependent Claim
29 words
Apparatus according to claim 8, wherein each control roller consists of dielectric material and is covered with a metal layer in the region of the first circumferential control portion.
Claim 11
Dependent Claim
50 words
Apparatus according to claim 1, wherein the first circumferential control portion is formed of an electrically conductive surface and the second circumferential control portion is formed of an electrically nonconductive surface the switching means being formed by an electromagnetic induction coil arranged closely adjacent the circumference of the control roller.
Claim 12
Dependent Claim
53 words
Apparatus according to claim 1, wherein the first circumferential control portion is formed of an electrically conductive surface and the second circumferential control portion is formed of an electrically nonconductive surface, the switching means consisting of a terminal switch arranged closely adjacent the circumference of the control roller and comprising a reed contact.
Claim 13
Dependent Claim
61 words
Apparatus according to claim 1, wherein the circumferential surface of the control roller is a relief surface having a depression in the area of the first control portion and an elevation in the area of the second control portion, the switching means being formed of a microcontact which has an actuating lever engaging with the circumferential surface of the control roller.
Claim 14
Dependent Claim
50 words
Apparatus according to claim 1, wherein the control roller comprises a hollow cylindrical shell having a cutout part representing the first circumferential control portion, while its remaining part forms the second circumferential control portion, the switching means including a reflex switch arranged closely adjacent the circumference of the control roller.
Claim 15
Dependent Claim
61 words
Apparatus according to claim 1, wherein the control roller comprises a hollow cylindrical shell having a cutout part representing the first circumferential control portion, while its remaining part forms the second circumferential control portion, the switching means including a source of light arranged at the outside and a photoelectric cell arranged at the inside of the shell of the control roller.
Claim 16
Dependent Claim
53 words
Apparatus according to claim 1, wherein the control roller comprises a hollow cylindrical shell having a cutout part representing the first circumferential control portion, while its remaining part forms the second circumferential control portion, the switching means including pneumatic switching means having a nozzle terminating closely adjacent the circumference of the control roller.
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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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |