Frontal connection apparatus for tractors

Details Frontal connection apparatus for tractors Frontal connection apparatus for tractors

1989-04-24

1990-02-13

Johnson, Richard J.

Earth working

Mounting for pushed tool at end of motor vehicle

172439, 172611, A01B 59048, A01B 63108

Patent

active

048998311

ABSTRACT:
Improved tractor frontal three-point connection apparatus with lower links attached to the front bolster at a pivot axis behind the front panelling of the tractor housing and pivotable to positions behind such panelling, the lower links having rear extensions acted on by lower ends of substantially vertical hydraulic cylinders to pivot the lower links to a substantially vertical orientation, thereby facilitating movement of lower links to inoperative positions over the front axles. Preferred embodiments include a tubular rock shaft rotatably mounted on the front bolster and having rearwardly extending cylinder-attachment lugs, opposite ends removably receiving journals of the lower links, and pocket members at each end receiving and interacting with the rear extensions of the lower links.

REFERENCES:
patent: 2608924 (1952-09-01), Bywater et al.
patent: 2919754 (1960-01-01), Walberg
patent: 2970654 (1961-02-01), Todd
patent: 2998734 (1961-09-01), Bunting
patent: 3800447 (1974-04-01), Harvey
patent: 4519623 (1985-05-01), Orthman
patent: 4659102 (1987-04-01), Stuhrmann et al.
patent: 4715770 (1987-12-01), Kryscyk
patent: 4778195 (1988-10-01), Vacon

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