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US 4,282,778 AGranted
Multi-stage Geneva mechanism
AssigneeThe Regents of the University of California
InventorsAn T. Yang, Lih M. Hsia
Life of this patent
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Abstract
A multi-stage Geneva mechanism comprises first and second Geneva mechanisms and a constant speed ratio drive, such as a gear train, interconnected between the Geneva mechanisms. An adjustment mechanism is connected to the gear train to selectively adjust the phase angle between a crank and wheel of the second stage Geneva mechanism, on the output side of the system. Selective change of such phase angle enables the operator to fine-tune the indexing time to accommodate more precisely the requirements of an automated production line.
Claims9
A multi-stage Geneva mechanism comprising
- a first Geneva mechanism including a first crank having a first drive member engageable with a slotted first wheel to intermittently rotate said first wheel,
- a second Geneva mechanism including a second crank having a second drive member engageable with a slotted second wheel to intermittently rotate said second wheel,
- constant speed ratio drive means, interconnected between said first wheel and said second crank, for rotating said second crank one revolution in response to partial rotation of said first wheel, and
- means for selectively adjusting the phase angle between said second crank and said second wheel, said phase angle being defined as the included angle between a first line intersecting the axes of rotation of said second crank and said second wheel and a second line intersecting the axis of rotation of said second crank and the drive member thereof.
1 more element
Dependencies are inferred from the claim text.