Draw bar for a motor grader

Details Draw bar for a motor grader Draw bar for a motor grader

1976-02-27

1977-12-27

Stouffer, Richard T.

Earth working

Scraper between front and rear ground supports of vehicle

52731, E02F 376

Patent

active

040649474

ABSTRACT:
Motor graders have a longitudinal main frame which carries a circle mounting bar that pivots on a horizontal axis at a connecting end and that has a carrying portion remote from its connecting end. A circle rotates on a vertical axis on the mounting bar carrying portion, and a grader blade is mounted on the circle. The present improved circle mounting bar is a box-like beam with internal vertical webs, and the beam increases in width from its connecting end toward a carrying portion of box-like cross section which is a separate part integrally welded to the beam. The shape of the beam in plan is intermediate between an isosceles triangle with its apex at the connecting end and a parabola with its apex at said end so as to give optimum uniformity of stress, throughout the length of the mounting bar, to both vertical and lateral forces.

REFERENCES:
patent: 1320072 (1919-10-01), Long
patent: 2128881 (1938-08-01), Iverson
patent: 2497778 (1950-02-01), Lado
patent: 2498044 (1950-02-01), Le Tourneau
patent: 2646633 (1953-07-01), Jahn
patent: 3101819 (1963-08-01), Shinn
patent: 3421589 (1969-01-01), Rivinius
patent: 3470967 (1969-10-01), Page et al.
patent: 3548955 (1970-12-01), Hart
patent: 3694990 (1972-10-01), Pamer
patent: 3722864 (1973-03-01), Borer et al.

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