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US 4,766,935 AGranted
Positive dobby
AssigneeMurata Kikai Kabushiki Kaisha
InventorsTadashi Tanaka, Noboru Sekitani
Life of this patent
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Abstract
A positive dobby in which a pair of cam plates for moving each heald frame positively vertically are provided separately on the first cam shaft and on the second cam shaft parallel to the first cam shaft, whereby the dobby is constituted without enlarging the pitch between the cam plates corresponding to each heald frame.
Claims7
A positive dobby comprising:
- a driving shaft;
- a first cam shaft being supported axially in parallel to the driving shaft;
- a second cam shaft being provided on brackets which are pivotable about the first cam shaft;
- a pair of cam plates mounted on the first and second cam shafts rotatably with respect to the cam shafts;
- cam levers adapted to move pivotally about the driving shaft following the paired cam plates;
- and
- jack levers integrally combined with the cam levers.
4 more elements
Dependencies are inferred from the claim text.