Sewing – Stitch forming – Feeding work material
Patent
1988-03-21
1989-06-06
Falik, Andrew M.
Sewing
Stitch forming
Feeding work material
11212111, 112308, 271251, D05B 2100, D05B 2714
Patent
active
048361194
ABSTRACT:
Method and apparatus for controlling the position of a sheet member (e.g., fabric) slidingly supported on a work surface, utilizing a drive train consisting of one or more drive wheels frictionally engaging a spherical ball captively supported within a housing. The drive wheels are preferrably located in spaced, mutually orthogonal relation proximate the great circle of the spherical ball. The spherical ball rests on and frictionally engages the fabric-to-be-positioned. Rotation of one of the drive wheels causes the spherical ball to rotate which, in turn, moves the fabric in a direction dependent on the location and orientation of said one drive wheel. The inventor can be implemented as an active feedback system utilizing the above-described apparatus together with position detectors and a controller.
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Barrett David S.
Siraco Frank J.
Falik Andrew M.
The Charles Stark Draper Laboratory Inc.
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