Adjustable hydraulic control system for a motor grader

Details Adjustable hydraulic control system for a motor grader Adjustable hydraulic control system for a motor grader

1974-10-15

1976-06-29

Scott, Samuel

Machine element or mechanism

Control lever and linkage systems

Multiple controlling elements for single controlled element

74512, G05G 1100

Patent

active

039657710

ABSTRACT:
An apparatus for selectively changing the neutral position of one or more control levers such as those found on the control console of a motor grader is disclosed. The apparatus comprises a bearing having a longitudinal axis; means for eccentrically mounting the bearing about a central axis which is spaced apart from and parallel to the longitudinal axis, the means for mounting the bearing permitting the bearing to revolve about the central axis; and means for selectively retaining the bearing in a plurality of desired radial positions relative to the central axis, an end of the control lever is secured to the bearing to permit the control lever to pivot about the longitudinal axis. A connecting rod has a first end pivotally connected to the control lever and a second end connected to a device which is to be activated by the control lever. The first end of the connecting rod pivots about an axis which is coincident with the central axis. The control lever moves the connecting rod to activate the device when the control lever is pivoted about the longitudinal axis while the bearing remains stationary. To change the neutral position of the control lever, the control lever is pivoted about the central axis as the bearing is revolving about the central axis.

REFERENCES:
patent: 2903904 (1959-09-01), Mackie
patent: 2985031 (1961-05-01), Bennett
patent: 3282123 (1966-11-01), Klingaman
patent: 3354789 (1967-11-01), Schenkelberger
patent: 3710644 (1973-01-01), Downing

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