Crank mechanism

Details Crank mechanism Crank mechanism

1974-09-17

1976-04-20

Sprague, Kenneth W.

Machine element or mechanism

Mechanical movements

Rotary to or from reciprocating or oscillating

74 25, 74579R, B21B 4502

Patent

active

039510034

ABSTRACT:
A crank mechanism for imparting reciprocal lineal movement to a member through forward and reverse strokes, and providing dwell periods for the member at each end of its stroke. The crank mechanism comprises a rotatable crank shaft for rotatably driving an eccentrically mounted crank pin which imparts reciprocal movement to a member via a connecting rod. A cam is provided for altering the throw between the axes of the crank pin and crank shaft at each end of the stroke of the member to provide dwell periods for the member in such positions.

REFERENCES:
patent: 2687649 (1954-08-01), Seragnoli
patent: 2767588 (1956-10-01), Drury

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