US3692121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinge locking means for a foldable auxiliary tool frame
Assignee: Midland Manufacturing Co Inc
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Filing: 1970-11-02
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Granted: 1972-09-19
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Expires: 1990-11-02
Abstract
Abstract An earth working implement comprising a main frame which may carry earth working tools, together with foldable extendable side gangs of working tools. The invention is particularly directed to means to raise, lower, and lock the wing gangs in positive manner when in the working position. The invention embodies mechanism which permits the raising, lowering, locking and unlocking to be accomplished by a single motor such for instance, as a fluid pressure cylinder. The apparatus may be tractor drawn and the controls for the various cylinders may be located in easy reach of the tractor operator.
Inventors
- 👤 William D Kenney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:30
CPC Classifications
A; A01; A01B; A01B21/00; A01B21/08; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1075; Y10T292/1082
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
284 words
In apparatus for working the soil which includes tools which must be held down when in working position, a. a translatable main supporting frame, b. a tool carrying frame pivotally connected to the main frame for movement from a position with the tools thereon in earth engaging working position to a raised, inoperative position, c. means for locking the tool carrying frame in operating position and for moving the same to raised position comprising, 1. a locking arm pivoted adjacent one end to said main frame at a position out of alignment with the axis of the pivotal connection for said tool carrying frame, 2. power means operatively connected to said main frame and adjacent the other end of said locking arm to rock it about its pivot, 3. a locking lug carried by the tool carrying frame and located, when the tool carrying frame is in working position, out of alignment with the axes of the pivot points of said locking arm and said connection for the tool carrying frame, 4. a member on the locking arm intermediate the ends thereof disposed to engage said locking lug when the tool carrying frame is in said working position, thereby to lock the tool carrying frame against upward pivoting, and d. means to connect said power means to the tool carrying frame for raising and lowering the same including a lost motion connection between the power means and the tool carrying frame, whereby with the tool carrying frame in operating, locked position, pivotal movement of the locking arm removes said member thereon out of the path of movement of the locking lug prior to pivoting the tool carrying frame toward raised position, and vice versa.
Claim 2
Dependent Claim
284 words
In apparatus for working the soil which includes tools which must be held down when in working position, a. a translatable main supporting frame, b. a tool carrying frame pivotally connected to the main frame for movement from a position with the tools thereon in earth engaging working position to a raised, inoperative position, c. means for locking the tool carrying frame in operating position and for moving the same to raised position comprising, 1. a locking arm pivoted adjacent one end to said main frame at a position out of alignment with the axis of the pivotal connection for said tool carrying frame, 2. power means operatively connected to said main frame and adjacent the other end of said locking arm to rock it about its pivot, 3. a locking lug carried by the tool carrying frame and located, when the tool carrying frame is in working position, out of alignment with the axes of the pivot points of said locking arm and said connection for the tool carrying frame, 4. a member on the locking arm intermediate the ends thereof disposed to engage said locking lug when the tool carrying frame is in said working position, thereby to lock the tool carrying frame against upward pivoting, and d. means to connect said power means to the tool carrying frame for raising and lowering the same including a lost motion connection between the power means and the tool carrying frame, whereby with the tool carrying frame in operating, locked position, pivotal movement of the locking arm removes said member thereon out of the path of movement of the locking lug prior to pivoting the tool carrying frame toward raised position, and vice versa.
Claim 3
Dependent Claim
23 words
power means operatively connected to said main frame and adjacent the other end of said locking arm to rock it about its pivot,
Claim 4
Dependent Claim
23 words
power means operatively connected to said main frame and adjacent the other end of said locking arm to rock it about its pivot,
Claim 5
Dependent Claim
28 words
Apparatus as defined in claim 1 in which the member on the locking arm is adjustable toward and from said lug, thereby to vary the operating clearances therebetween.
Claim 6
Dependent Claim
105 words
Apparatus as defined in claim 1 in which there is a pair of said locking arms which straddle the adjacent pivoted end of the tool carrying frame, said lost motion connection including a link pivoted at one of its ends to the ends of the locking arms remote from their pivotal connection to the frame, a cross pin in the other end of the link, and an elongated slotted connection on the tool carrying frame in which said pin slides during the locking and unlocking movement of the locking arms and in one end of which it bottoms during raising of the tool carrying frame.
Claim 7
Dependent Claim
42 words
a locking lug carried by the tool carrying frame and located, when the tool carrying frame is in working position, out of alignment with the axes of the pivot points of said locking arm and said connection for the tool carrying frame,
Claim 8
Dependent Claim
42 words
a locking lug carried by the tool carrying frame and located, when the tool carrying frame is in working position, out of alignment with the axes of the pivot points of said locking arm and said connection for the tool carrying frame,
Claim 9
Dependent Claim
112 words
a member on the locking arm intermediate the ends thereof disposed to engage said locking lug when the tool carrying frame is in said working position, thereby to lock the tool carrying frame against upward pivoting, and d. means to connect said power means to the tool carrying frame for raising and lowering the same including a lost motion connection between the power means and the tool carrying frame, whereby with the tool carrying frame in operating, locked position, pivotal movement of the locking arm removes said member thereon out of the path of movement of the locking lug prior to pivoting the tool carrying frame toward raised position, and vice versa.
Claim 10
Dependent Claim
112 words
a member on the locking arm intermediate the ends thereof disposed to engage said locking lug when the tool carrying frame is in said working position, thereby to lock the tool carrying frame against upward pivoting, and d. means to connect said power means to the tool carrying frame for raising and lowering the same including a lost motion connection between the power means and the tool carrying frame, whereby with the tool carrying frame in operating, locked position, pivotal movement of the locking arm removes said member thereon out of the path of movement of the locking lug prior to pivoting the tool carrying frame toward raised position, and vice versa.
Claim 11
Dependent Claim
249 words
For use in raising, lowering and positively locking in lowered, generally horizontal, working position a tool frame carrying earth working tools, which tool frame is pivoted adjacent its inner end to a main frame, a. a pair of locking arms pivotally mounted on the main frame at a point out of axial alignment with the axis of the pivotal mount of the tool frame to the main frame, said arms having upper portions straddling the tool frame adjacent its pivoted end and extending above the top of the same when the tool frame is in lowered, locked position, b. at least one outstanding locking lug operatively connected to the tool frame and positioned below and outwardly of the pivotal connection of the tool frame to the main frame, c. means on at least one of the locking arms engaging said outstanding lug when the apparatus is in lowered, locked position, thereby preventing the tool frame from pivoting upwardly, d. means operatively connected to the main frame and to the non-pivoted ends of said locking arms for pivoting them from locked toward unlocked position, and e. means operatively connecting the said locking arms to said tool carrying frame and effective, upon initial pivotal movement of the arms toward unlocking position, to move said lug engaging means out of the path of movement of said outstanding lug and upon continued subsequent pivotal movement of the arms operatively to engage the tool frame and pivot it upwardly to a raised, inoperative position.
Claim 12
Dependent Claim
249 words
For use in raising, lowering and positively locking in lowered, generally horizontal, working position a tool frame carrying earth working tools, which tool frame is pivoted adjacent its inner end to a main frame, a. a pair of locking arms pivotally mounted on the main frame at a point out of axial alignment with the axis of the pivotal mount of the tool frame to the main frame, said arms having upper portions straddling the tool frame adjacent its pivoted end and extending above the top of the same when the tool frame is in lowered, locked position, b. at least one outstanding locking lug operatively connected to the tool frame and positioned below and outwardly of the pivotal connection of the tool frame to the main frame, c. means on at least one of the locking arms engaging said outstanding lug when the apparatus is in lowered, locked position, thereby preventing the tool frame from pivoting upwardly, d. means operatively connected to the main frame and to the non-pivoted ends of said locking arms for pivoting them from locked toward unlocked position, and e. means operatively connecting the said locking arms to said tool carrying frame and effective, upon initial pivotal movement of the arms toward unlocking position, to move said lug engaging means out of the path of movement of said outstanding lug and upon continued subsequent pivotal movement of the arms operatively to engage the tool frame and pivot it upwardly to a raised, inoperative position.
Claim 13
Dependent Claim
65 words
Apparatus as defined in claim 4 in which the means operatively connecting the locking arms to the tool frame comprises a lost motion connection between the locking arms and the tool frame constructed and arranged to permit initial pivotal movement of the locking arms to move the lug engaging means out of the path of movement of the lug prior to raising the tool frame.
References Cited (Backward Citations)
US1404544A
Cited
US2260080A
Cited
US2719682A
Cited
US2972385A
Cited
US3568777A
Cited
US3650333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |