Shift mechanism for mechanical transmissions
AssigneeInternational Harvester Company
InventorJosef F. Prokop
Life of this patent
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Abstract
A single control lever [pivotally] with an internal junction actuating a latch [progressively] by progressive pivoting in a first and a second plane. When it is desired to change from one to another of two transmission gear set levers, the latch is pivoted from a gap contained therein through a fixed gate into a gap contained in the other transmission gear set lever. The shift being possible only when the two gaps and the gate define a common plane.
Claims8
A shift mechanism for a mechanical transmission having several gear sets comprising:
- a support shaft means,
- a latch means,
- a lever means having a junction therein for actuating said latch means [progressively] by progressive pivoting in a first and second plane, and being journalled by said support shaft means,
- an outer lever means adapted to be connected to said transmission having a gap means capable of accommodating said latch and being journalled by said support shaft means;
- an inner lever means adapted to be connected to said transmission having a gap means capable of accommodating said latch and being journalled by said support shaft means;
- and
- a single gate means having a gap means capable of passing said latch means and a base fixed to said support shaft means whereby when said gaps are orientated in the neutral position of said second plane, said latch is movable in an up and down manner therein to engage a transmission gear set means[, and] upon said lever means [is moved] pivoting about said junction in said second plane.
A shift control assembly for a transmission having a single control handle comprising:
- a support shaft means;
- a latch means;
- a control handle means including;
- a dog-leg base means journalled by said supporting shaft means and pivotally mounting said latch means, a bellcrank lever means pivotally mounted on said dog-leg base means actuating said latch means, and a deadmans means;
- an outer lever means adapted to be connected to said transmission having a gap means capable of accommodating said latch, and a base journalled by said support shaft means;
- an inner lever means adapted to be connected to said transmission having a gap means capable of accommodating said latch, and a base journalled by said support shaft means and
- a gate means having a gap means capable of passing said latch and a base fixed to said support shaft means whereby for said latch to pass through said gate all of said gaps must form a common plane.
Dependencies are inferred from the claim text.