US3635494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dial hitch lock for swingable trailer tongue
Assignee: NEW IDEA CORP
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Filing: 1970-02-05
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Granted: 1972-01-18
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Expires: 1990-02-05
Abstract
Abstract A locking device for the tongue of a harvester which is pivoted at its rear end to a draft frame of the harvester for swinging movement about a vertical axis. The frame having an arcuate flange struck from the axis and overlying the tongue and having horizontal angularly spaced holes therein, a spring-loaded bolt on the tongue connected to an operating lever having a roller at one end engaging a bolt-mounting flange on the tongue to provide a fulcrum for the bolt. The lever is attached at its other end to a rope which leads to the operator''s station for easy reach by the operator. The bolt is movable by the lever to withdraw from any of the openings in the flange and is spring urged into the opening selected after the operator has angled the tongue with respect to the harvester as desired.
Inventors
- 👤 Reynold Barkstrom
- 👤 Peter J Peacock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:06
CPC Classifications
A; A01; A01D; A01D67/00; A01D67/005
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
166 words
In a dial hitch for an implement comprising a fore and aft extending draft frame, a generally horizontal tongue having a rear end pivotally connected on a vertical axis to said draft frame, said draft frame having an arcuate element concentric with said axis with a plurality of angularly spaced transverse openings therein, a bolt extending longitudinally of the tongue in said position locating the bolt in alignment with respective openings in accordance with corresponding laterally displaced positions of the tongue, means biasing the bolt into respective openings, lever means pivotally connected on a vertical axis to the bolt, and means providing a fulcrum on the tongue affording a reaction point for the lever at one side of the bolt, said lever operable in a substantially horizontal plane and said lever being of L-section having horizontal and vertical legs, a roller rotatably mounted on said horizontal leg for engagement with the fulcrum, said vertical leg having means providing attachment for the lever to operating means therefor.
Claim 2
Dependent Claim
166 words
In a dial hitch for an implement comprising a fore and aft extending draft frame, a generally horizontal tongue having a rear end pivotally connected on a vertical axis to said draft frame, said draft frame having an arcuate element concentric with said axis with a plurality of angularly spaced transverse openings therein, a bolt extending longitudinally of the tongue in said position locating the bolt in alignment with respective openings in accordance with corresponding laterally displaced positions of the tongue, means biasing the bolt into respective openings, lever means pivotally connected on a vertical axis to the bolt, and means providing a fulcrum on the tongue affording a reaction point for the lever at one side of the bolt, said lever operable in a substantially horizontal plane and said lever being of L-section having horizontal and vertical legs, a roller rotatably mounted on said horizontal leg for engagement with the fulcrum, said vertical leg having means providing attachment for the lever to operating means therefor.
Claim 3
Dependent Claim
85 words
The invention according to claim 1 and said mounting means for the bolt comprising a pair of lugs on top of the tongue spaced lengthwise of the bolt and having aligned horizontal apertures receiving the bolt therethrough, and said lever positioned in front of the lug remote from said arcuate element and having a roller at one end engaging the adjacent side of the lug and extending outwardly of the tongue transversely thereof at the other end to provide a handhold for manual operation thereof.
Claim 4
Dependent Claim
44 words
The invention according to claim 2 and said horizontal leg having a diagonal edge opposing the adjacent flange to accommodate movement of the lever in a direction disengaging the roller from the flange to facilitate up-and-down movement of the lever to rotate the bolt.
Claim 5
Dependent Claim
28 words
The invention according to claim 3 and said flange adjacent to said lever having a flat vertical surface opposing said diagonal edge and defining a tool-admitting space therewith.
Claim 6
Dependent Claim
18 words
The invention according to claim 4 and said horizontal leg being flat and seating tangentially on the bolt.
Claim 7
Dependent Claim
27 words
The invention according to claim 4 and a spring sleeved on the bolt and between the flange adjacent the lever and an opposed abutment on the bolt.
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |