Drive connection for a reciprocating a connecting rod from a drive shaft through an eccentric cam
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United States of America Patent
Stats
-
Mar 1, 1988
Grant Date -
N/A
app pub date -
Mar 23, 1987
filing date -
Mar 22, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drive connection for reciprocating a connecting rod from a drive shaft through an eccentric cam to manipulate a harness frame of a textile loom from one shedding position to another. The drive connection includes a pawl mounted on an eccentric cam and movable into and out of engagement in recesses in an annular drive ring only when the eccentric cam is in predetermined dwell positions. The pawl is controlled by a locking element against any change of position after it is engaged and it is continually biased in the direction of engagement. An actuating lever mounted on the connecting rod actuates the locking element to cause disengagement of the pawl from the drive ring recess. The actuating lever is controlled by an operating member that operates according to a predetermined program, and the actuating lever is prevented from actuation by blocking members that are spaced to allow actuation only at a dwell position.
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Cited Art Landscape
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