Patent US4241793A successfully refreshed from Google Patents.
US4241793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary hoe scratcher
Assignee: Individual
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Filing: 1979-01-22
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Granted: 1980-12-30
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Expires: 1999-01-22
Abstract
Abstract A set of four rotary hoes are evenly spaced apart laterally so that the distance between the tracks is two inches and the distance between the outside hoes is six inches. The assembly is pivoted about the center to ride over uneven ground. The front and back hoe are removable so that the other two hoes, which are widest apart, may be operated as a rotating shield. The mounting is attached to the tool bar of a tractor and spring biased downward.
Inventors
- 👤 Murrell G. Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:06
CPC Classifications
A; A01; A01B; A01B39/00; A01B39/08; A01B21/00; A01B21/02; A01B21/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
286 words
On an agricultural draft vehicle having a. a direction of draft, b. a horizontal tool bar normal to the direction of draft, and c. a plurality of rotary hoes, each including (i) an axle, (ii) a hub journalled to the axle, and (iii) a plurality of tines in a plane radiating from the hub forming a diameter; the improved structure for mounting the rotary hoes to the tool bar comprising: d. a central carriage, e. a central axle bolt having one of said axles on each end thereof extending through the carriage, f. a pair of ears extending upward from the carriage straddling g. a hoe shank connected to said tool bar, h. at least one shank bolt connecting the ears to the shank, j. a forward stub arm extending forward from the central carriage, k. a rear stub arm extending rearwardly from the central carriage, m. a forward arm bolted to the forward stub arm, n. a forward axle bolt with (i) one of said axles on one end thereof, and (ii) the other end bolted to said forward arm, o. a rear arm bolted to the rear stub arm, p. a rear axle bolt with (i) one of said axles on one end thereof, and (ii) the other end bolted to said rear arm, q. so that (i) the distance of the front axle bolt to the central axle bolt is the same as the distance of the rear axle bolt to the central axle bolt, (ii) which distance is less than the diameter of the rotary hoes, and (iii) the plane of the tines of each of the four hoes is spaced an equal amount from the plane of the next nearest hoe.
Claim 2
Dependent Claim
286 words
On an agricultural draft vehicle having a. a direction of draft, b. a horizontal tool bar normal to the direction of draft, and c. a plurality of rotary hoes, each including (i) an axle, (ii) a hub journalled to the axle, and (iii) a plurality of tines in a plane radiating from the hub forming a diameter; the improved structure for mounting the rotary hoes to the tool bar comprising: d. a central carriage, e. a central axle bolt having one of said axles on each end thereof extending through the carriage, f. a pair of ears extending upward from the carriage straddling g. a hoe shank connected to said tool bar, h. at least one shank bolt connecting the ears to the shank, j. a forward stub arm extending forward from the central carriage, k. a rear stub arm extending rearwardly from the central carriage, m. a forward arm bolted to the forward stub arm, n. a forward axle bolt with (i) one of said axles on one end thereof, and (ii) the other end bolted to said forward arm, o. a rear arm bolted to the rear stub arm, p. a rear axle bolt with (i) one of said axles on one end thereof, and (ii) the other end bolted to said rear arm, q. so that (i) the distance of the front axle bolt to the central axle bolt is the same as the distance of the rear axle bolt to the central axle bolt, (ii) which distance is less than the diameter of the rotary hoes, and (iii) the plane of the tines of each of the four hoes is spaced an equal amount from the plane of the next nearest hoe.
Claim 3
Dependent Claim
111 words
The invention as defined in claim 1 further comprising: r. a clamp attached adjustably along the length of the tool bar, s. a bar shank in the clamp at a vertically adjustable position, t. a sleeve pivoted to the bottom of the bar shank, u. a horizontal bar aligned with the direction of draft telescoped in the sleeve, v. set means on the sleeve for setting the horizontal bar in a preset position, w. spring means connected from the back of the horizontal bar to near the top of the bar shank for biasing the horizontal bar, and x. said hoe shank rigidly fixed to the back of the horizontal bar.
Claim 4
Dependent Claim
193 words
On an agricultural draft vehicle having a. a direction of draft, b. a horizontal tool bar normal to the direction of draft, and c. a plurality of rotary hoes, each including (i) an axle, (ii) a hub journalled to the axle, and (iii) a plurality of tines in a plane radiating from the hub forming a diameter; the improved structure for mounting the rotary hoes to the tool bar comprising: d. a clamp attached horizontally adjustably along the length of the tool bar, e. a bar shank in the clamp at a vertically adjustable position, f. a sleeve pivoted to the bottom of the bar shank, g. a horizontal bar aligned with the direction of draft telescoped in the sleeve, h. set means on the sleeve for setting the horizontal bar in a preset position, j. spring means connected from the back of the horizontal bar to near the top of the bar shank for biasing the horizontal bar, k. a hoe shank rigidly fixed to the back of the hoizontal bar, and m. a central carriage attached to the bottom of the hoe shank, said rotary hoes attached to the central carriage.
Claim 5
Dependent Claim
193 words
On an agricultural draft vehicle having a. a direction of draft, b. a horizontal tool bar normal to the direction of draft, and c. a plurality of rotary hoes, each including (i) an axle, (ii) a hub journalled to the axle, and (iii) a plurality of tines in a plane radiating from the hub forming a diameter; the improved structure for mounting the rotary hoes to the tool bar comprising: d. a clamp attached horizontally adjustably along the length of the tool bar, e. a bar shank in the clamp at a vertically adjustable position, f. a sleeve pivoted to the bottom of the bar shank, g. a horizontal bar aligned with the direction of draft telescoped in the sleeve, h. set means on the sleeve for setting the horizontal bar in a preset position, j. spring means connected from the back of the horizontal bar to near the top of the bar shank for biasing the horizontal bar, k. a hoe shank rigidly fixed to the back of the hoizontal bar, and m. a central carriage attached to the bottom of the hoe shank, said rotary hoes attached to the central carriage.
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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) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |