Shift lever assembly
AssigneeDeere & Company
InventorEugen Sonns
Life of this patent
Estimating the term…
Abstract
This invention relates to a shift lever assembly for changing the speed of a power take-off shaft of a tractor. The assembly comprises a movable rod positioned between two different speed positions having a neutral position therebetween. The rod has abutment means secured to it which cooperates with knotched plates so that the rod can be moved in a linear direction between the speed positions only when it is rotated while in the neutral position.
Claims12
A shift lever assembly for changing the speed of a rotatable shaft, comprising:
- (a) a first plate containing a slot having at least three pairs of notches formed thereon, two pairs of said notches corresponding to two speed positions and said third pair of notches corresponding to a neutral position which is located between said two speed positions;
- (b) a second plate containing a slot with a recess formed thereon corresponding to said neutral position;
- (c) a movable rod attached to said rotatable shaft and passing through said slots formed in said first and second plates;
- (d) a knob attached to said rod having stop means engageable with said notches of said first plate to position said rod in said speed positions and said neutral position;
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- (e) abutment means for preventing said rod from moving directly from one speed position to the next until said rod is rotated while in the neutral position.
A shift lever assembly for changing the speed of a power take-off shaft of a tractor, comprising:
- (a) a first plate containing a linear slot having a pair of notches corresponding to each speed position and to a neutral position, said neutral position located between said speed positions;
- (b) a second plate aligned adjacent to said first plate containing a linear slot with a circular recess located at said neutral position;
- (c) a movable spring-loaded rod attached to said power take-off shaft and passing through said slots formed in said first and second plates;
- (d) a knob attached to said rod having stop means engageable in said notches of said first plate to position said rod in said speed positions and in said neutral position;
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- (e) an abutment member fixed to said rod and engageable in said circular recess of said second plate for preventing said rod from moving directly from one speed position to a second speed position until said rod is rotated while in the neutral position.
A shift lever assembly for changing the speed of a power take-off shaft of a tractor, comprising:
- (a) a first plate containing a linear slot having at least three pairs of notches formed therein and having two pairs of projections located adjacent to the middle pair of notches, said middle pair of notches corresponding to a neutral position and said other two pairs of notches corresponding to two speed positions;
- (b) a second plate vertically aligned to said first plate containing a linear slot with a circular recess located at said neutral position;
- (c) a movable rod spring-loaded downward which passes through said slots formed in said first and second plates;
- (d) linkage means for connecting a first end of said rod to said power take-off shaft;
- (e) a knob attached to a second end of said rod having stop means engageable in said notches of said first plate to position said rod in said speed positions and in said neutral position;
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- (f) an abutment member fixed to said rod below said second plate an engageable in said circular recess of said second plate when said rod is moved to said neutral position, said abutment member preventing said rod from being moved directlyy from one speed position to the second speed position until said rod is rotated while in the neutral position.
Dependencies are inferred from the claim text.