Patent US3638406A successfully refreshed from Google Patents.
US3638406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Field chopping machine attachable to a tractor
Assignee: Individual
•
Filing: 1968-07-24
•
Granted: 1972-02-01
•
Expires: 1988-07-24
Abstract
Abstract A field chopping machine including a chaff-cutting device provided with feeding, pressing, cutting implements, and a pickup or receiving apparatus, said device and apparatus being of substantially the same width and attached to a tractor, oriented in the longitudinal axis thereof and disposed laterally adjacent the rear wheel of the tractor; the pickup apparatus comprises a tandem cutting assembly which is separable, horizontally arranged in operating position and upwardly pivotable to a travel position; the tractor drive means is coupled to the field chopper such as to enable attaching a wagon thereto and to operate the field chopper off the tractor drive, the total width of tractor and field chopper during travel being no more than 2.73 yards, thereby meeting public road traffic regulations for vehicles with hitched-on equipment.
Inventors
- 👤 Lorenz Scherer
- 👤 Heinrich Bellan
- 👤 Rudolf Wohrle
- 👤 Alfred Eggenmuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:18
CPC Classifications
A; A01; A01D; A01D43/00; A01D43/08; A01D43/088; A01D67/00; A01D67/005; Y; Y10; Y10S; Y10S56/00; Y10S56/09
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
267 words
Field chopping machine having at least one chopper attachable to a tractor to which a wagon is connected by pulling means including a traction pole, said chopper having an attachment frame which projects laterally over the tractor and supports a chaff-cutting device having pickup device, including means on the attachment frame for connecting same to the tractor such as to leave the pulling means freely accessible at all times, and means associated with the frame and the tractor for fastening the wagon to the tractor such as to assure maximal maneuverablility of the traction pole, the attachment frame comprising a crossbar, including means for positioning the pickup device horizontally when in operating position, means for pivoting the pickup device upwardly to a transport position, and means for locking same therein, telescopic means for lengthening the crossbar such as to form support means for lateral attachment of the field chopper to a tractor having a traction jaw, the crossbar extending from the frame to a point beyond the center of the tractor, clutch bolts mounted on the crossbar, lower guide rods, connected to the clutch bolts, and upward guide rod, and means for coupling the upper guide rod to the crossbar, wherein the means for coupling the upper guide rod comprise two braces fastened to the crossbar in an upright position to the tractor extending approximately to the traction jaw, a bow freely pivotably mounted on the braces and having a bearing eye slidably and lockably mounted thereon, said bearing eye capable of being connected to a point of attachment of the upper guide rod to the tractor.
Claim 2
Dependent Claim
267 words
Field chopping machine having at least one chopper attachable to a tractor to which a wagon is connected by pulling means including a traction pole, said chopper having an attachment frame which projects laterally over the tractor and supports a chaff-cutting device having pickup device, including means on the attachment frame for connecting same to the tractor such as to leave the pulling means freely accessible at all times, and means associated with the frame and the tractor for fastening the wagon to the tractor such as to assure maximal maneuverablility of the traction pole, the attachment frame comprising a crossbar, including means for positioning the pickup device horizontally when in operating position, means for pivoting the pickup device upwardly to a transport position, and means for locking same therein, telescopic means for lengthening the crossbar such as to form support means for lateral attachment of the field chopper to a tractor having a traction jaw, the crossbar extending from the frame to a point beyond the center of the tractor, clutch bolts mounted on the crossbar, lower guide rods, connected to the clutch bolts, and upward guide rod, and means for coupling the upper guide rod to the crossbar, wherein the means for coupling the upper guide rod comprise two braces fastened to the crossbar in an upright position to the tractor extending approximately to the traction jaw, a bow freely pivotably mounted on the braces and having a bearing eye slidably and lockably mounted thereon, said bearing eye capable of being connected to a point of attachment of the upper guide rod to the tractor.
Claim 3
Dependent Claim
124 words
Field chopper according to claim 1, wherein the pickup device and the chaff-cutting device form with feeding, pressing and cutting organs, a narrow, elongated structural unit, arranged in the longitudinal axis of the tractor, the pickup device and the chaff-cutting device being of about the same width and arranged laterally near the rear wheel of the tractor, the pickup device including a removable row cutting mechanism being arranged in front of the chaff-cutting device and projecting thereover, all organs of the row cutting mechanism and the chaff-cutter being positioned between two sidewalls forming a unit, the side walls being connected with each other at a distance which equals approximately the width of the organs and forming together a self-supporting frame for the field chopper.
Claim 4
Dependent Claim
48 words
Field chopper according to claim 1 wherein the sides of the bow facing the crossbar extend in a substantially horizontal direction, the sides facing the point of attachment on the tractor extend in a substantially vertical direction, and the last-mentioned sides being provided with a plurality of perforations.
Claim 5
Dependent Claim
52 words
Field chopper according to claim 1, wherein the center lines of the lower guide rods and the braces in a lowered position intersect at a point which is located behind the pivot points of the lower guide rods, the position and the distance of the point from the pivot points being selectable.
Claim 6
Dependent Claim
96 words
Field chopper according to claim 2, wherein the chaff-cutting device and the pickup device form a harvesting mechanism which is detachably connected to the attachment frame, and including a first supporting wheel mounted on the attachment frame for supporting the harvesting mechanism, the pickup device comprising a guide sprocket wheel freely slidable in chain-tension direction under the tension of a spring, and a stop provided near the guide sprocket wheel at a distance which is smaller than a circle described by catch hooks around the center of the guide sprocket wheel when the spring is untensioned.
Claim 7
Dependent Claim
37 words
Field chopper according to claim 5, wherein the harvesting mechanism comprises a drive shaft positioned ahead of the cluTch bolts, and further including a miter gear having a universal shaft connecting pin disposed behind the clutch bolts.
Claim 8
Dependent Claim
45 words
Field chopper according to claim 6, wherein the miter gear comprises a drive shaft which is disposed in an approximately parallel staggered position relative to the drive shaft of the harvesting mechanism, the two drive shafts being connected by a first pair of spur wheels.
Claim 9
Dependent Claim
28 words
Field chopper according to claim 7, wherein the drive shaft of the miter gear is connected to the drive shaft of the harvesting mechanism through a universal-joint shaft.
Claim 10
Dependent Claim
24 words
Field chopper according to claim 6, wherein the miter gear includes an intermediate gear in the form of a second pair of spur wheels.
Claim 11
Dependent Claim
39 words
Field chopper according to claim 1, including a three point linkage comprising said lower guide rods and the upper guide rod, the attachment frame being connectable to said linkage and the attachment frame being disposed above the traction pole.
Claim 12
Dependent Claim
41 words
Field chopper according to claim 10, including an arm mounted to said crossbar, in an oblique downward direction outside of the rear wheel of the tractor, and drive-transmission means and connecting means for a harvesting mechanism being provided on said arm.
Claim 13
Dependent Claim
36 words
Field chopper according to claim 11, wherein the crossbar comprises coupling bolts for arranging the attachment frame below the traction pole, said clutch bolts constructed and adapted for arranging the attachment frame above the traction pole.
Claim 14
Dependent Claim
99 words
Field chopper according to claim 5, wherein there is provided on the harvesting mechanism in front of its center of gravity in the range of an extension of the tractor rear-wheel axle, a second supporting wheel which is pivotable by means of a hydraulic working cylinder, with the pressure side of the lifting cylinder of the tractor power lifter being connected with the working cylinder on the harvesting mechanism, so that pressure oil, whose pressure is generated by the weight of the lifted mechanism, may be transmitted at a selected moment from the lifting cylinder to the working cylinder.
Claim 15
Dependent Claim
44 words
Field chopper according to claim 5, including means for connecting the front end of the harvesting mechanism to lifting rods of a tractor mower, and means for adjusting the position and length of the connecting means between the lifting rods and the harvesting mechanism.
References Cited (Backward Citations)
US1815274A
Cited
DE609620C
Cited
US2442520A
Cited
US2595336A
Cited
CH330726A
Cited
US3095045A
Cited
US3229451A
Cited
US3304698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |