Fuel injection pump timing mechanism

Claim 2

In a fuel pump construction, the combination of: a driven shaft having means thereof for actuating a fuel pump for an internal combustion engine; a driving shaft adapted to be driven by an engine proportionally to engine speed; said shafts having aligned, toothed ends in close adjacency, the lead of the teeth on said ends being dissimilar; a toothed coupling interconnecting said ends and axially movable thereon and rotatable with said shafts; a collar rotatably receiving said coupling and restraining said coupling against axial movement; means, including a manually and selectively operable actuator, for axially adjusting the position of said collar and for holding said collar in a desired position of adjustment; a housing containing said shafts, coupling and collar; means whereby access to said actuator may be achieved from the exterior of said housing; a groove in the radially outer surface of said collar; and said adjusting and holding means comprises an element journalled in said housing adjacent said collar with a projection extending into said groove, said projection being offset from the axis of rotation of said element.

Claim 3

The fuel pump construction of claim 1 wherein said element includes an enlarged head exteriorly of said housing, said actuator comprises a tool receiving formation in said head, and means for retaining said element assembled to said housing.

Claim 4

In a fuel pump construction, the combination of: a driven shaft having means thereof for actuating a fuel pump for an internal combustion engine; a driving shaft adapted to be driven by an engine proportionally to engine speed; said shafts having aligned, toothed ends in close adjacency, the lead of the teeth on said ends being dissimilar; a toothed coupling interconnecting said ends and axially movable thereon and rotatable with said shafts; a collar rotatably receiving said coupling and restraining said coupling against axial movement; means, including a manually and selectively operable actuator, for axially adjusting the position of said collar and for holding said collar in a desired position of adjustment; a housing containing said shafts, coupling and collar; means whereby access to said actuator may be achieved from the exterior of said housing; said collar including finger receiving means in its radially outer surface and said adjusting and holding means comprising a rotatable element; a movable yoke having opposed fingers in said finger receiving means and splined to said element to pivot therewith; a tool receiving formation in said element; and means for locking said element against rotation.

Claim 5

In a fuel pump construction, the combination of: a driven shaft having means thereof for actuating a fuel pump for an internal combustion engine; a driving shaft adapted to be driven by an engine proportionally to engine speed; said shafts having aligned, toothed ends in close adjacency, the lead of the teeth on said ends being dissimilar; a toothed coupling interconnecting said ends and axially movable thereon and rotatable with said shafts; a collar rotatably receiving said coupling and restraining said coupling against axial movement; means, including a manually and selectively operable actuator, for axially adjusting the position of said collar and for holding said collar in a desired position of adjustment; a housing containing said shafts, coupling and collar; means whereby access to said actuator may be achieved from the exterior of said housing; said collar including finger receiving means in its radially outer surface and said adjusting and holding means comprising a rotatable element; a movable yoke having opposed fingers in said finger receiving means and splined to said element to pivot therewith; a tool receiving formation in said element; and means for locking said element against rotation.

Claim 6

In a fuel pump construction, the combination of: a driven shaft having means thereof for actuating a fuel pump for an internal combustion engine; a driving shaft adapted to be driven by an engine proportionally to engine speed; said shafts having aligned, toothed ends in close adjacency, the lead of the teeth on said ends being dissimilar; a toothed coupling interconnecting said ends and axially movable thereon and rotatable with said shafts; a collar rotatably receiving said coupling and restraining said coupling against axial movement; means, including a manually and selectively operable actuator, for axially adjusting the position of said collar and for holding said collar in a desired position of adjustment; a housing containing said shafts, coupling and collar; means whereby access to said actuator may be achieved from the exterior of said housing; said collar including finger receiving means in its radially outer surface and said adjusting and holding means comprising a movable yoke having opposed fingers in said finger receiving means, said yoke being axially movable, said adjusting and holding means further comprising a threaded shaft parallel to said driving and driven shafts and within said housing and mounting said yoke, and a tool receiving formation on said threaded shaft; and said access achieving means comprising an opening in said housing aligned with the axis of said threaded shaft and a removable plug for said opening, said plug receiving an end of said threaded shaft to hold the same within said housing.

Claim 7

In a fuel pump construction, the combination of: a driven shaft having means thereof for actuating a fuel pump for an internal combustion engine; a driving shaft adapted to be driven by an engine proportionally to engine speed; said shafts having aligned, toothed ends in close adjacency, the lead of the teeth on said ends being dissimilar; a toothed coupling interconnecting said ends and axially movable thereon and rotatable with said shafts; a collar rotatably receiving said coupling and restraining said coupling against axial movement; means, including a manually and selectively operable actuator, for axially adjusting the position of said collar and for holding said collar in a desired position of adjustment; a housing containing said shafts, coupling and collar; means whereby access to said actuator may be achieved from the exterior of said housing; said collar including finger receiving means in its radially outer surface and said adjusting and holding means comprising a movable yoke having opposed fingers in said finger receiving means, said yoke being axially movable, said adjusting and holding means further comprising a threaded shaft parallel to said driving and driven shafts and within said housing and mounting said yoke, and a tool receiving formation on said threaded shaft; and said access achieving means comprising an opening in said housing aligned with the axis of said threaded shaft and a removable plug for said opening, said plug receiving an end of said threaded shaft to hold the same within said housing.