Advancing material of indeterminate length – By intermittent material-mover – Unicyclic mover
Patent
1976-10-04
1978-05-16
Stoner, Jr., Bruce H.
Advancing material of indeterminate length
By intermittent material-mover
Unicyclic mover
83223, 83229, 192 45, 226139, 226148, 226156, 226199, B65H 1722, B65H 1744
Patent
active
040894517
ABSTRACT:
A strip feeder particularly for punch dies comprises drive and idler rollers engageable with opposite faces of the strip being fed, a spring-loaded member displaceable in a first direction during the foward stroke upon receiving an impact and returned by the spring during the return stroke, a first one-way clutch effective to decouple the drive roller from the displaceable member during the forward stroke and to couple same during the return stroke, and a second one-way clutch effective to couple the idler roller to the fixed frame during the forward stroke and to decouple same during the return stroke. The described one-way clutch comprises a first member having an external annular surface and a second member including an internal bore for rotably receiving the latter. The second member further includes a cylindrical cavity terminating at its inner end in a small opening communicating with the bore, the axis of the cavity being at an acute angle with respect to a line tangent to the bore at the center of the opening. A displaceable wedging element is disposed within the cavity and has a nose projectable through the opening, the wedging element being biassed by a spring to permit relative rotation between the two members in one direction but to block same in the opposite direction.
REFERENCES:
patent: 503984 (1893-08-01), Palmer et al.
patent: 2633193 (1953-03-01), Thompson
patent: 2732797 (1956-01-01), Cooper et al.
patent: 3511426 (1970-05-01), Whitmore et al.
patent: 3974953 (1976-08-01), Klose
Barish Benjamin H.
Stoner Jr. Bruce H.
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