Machine element or mechanism – Mechanical movements – Rotary to intermittent unidirectional motion
Patent
1981-03-16
1984-04-17
Staab, Lawrence J.
Machine element or mechanism
Mechanical movements
Rotary to intermittent unidirectional motion
74837, 74571R, F16H 2904
Patent
active
044427263
ABSTRACT:
An improved processing apparatus for adjustable stroke rotary indexing is provided. The apparatus comprises a rotatable input shaft, an intermediate shaft drivably and mechanically coupled to the input shaft, an output shaft coupled to the input shaft by a one-way clutch, and means for selectively adjusting the angular stroke of the output shaft. The mechanical coupling between the input and intermediate shafts comprises a planar four-link mechanism configured to operate in crank-rocker fashion such that continuous rotary input motion will produce angular rocking motion in the intermediate shaft. The limit positions of the oscillating shaft are a function of the length of the crank in the planar four-link crank-rocker coupling. The crank comprises a first crank member mounted on the input shaft and a second crank member rotatably mounted with respect to and lockably engagable with the first member. A method and means are provided for adjusting the angular stroke by altering the length of the crank through adjusting the angular displacement between the first and second crank members.
REFERENCES:
patent: 250404 (1881-12-01), Syverson
patent: 3213697 (1965-10-01), Hartmann et al.
Burroughs Corporation
Chung Edmund M.
Peterson Kevin R.
Rasmussen David G.
Staab Lawrence J.
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