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US 4,730,566 AGranted
Automatic pocket label stitcher
AssigneePorter Sewing Machines, Inc.
InventorsThomas G. Brophy, Michael R. Porter
Life of this patent
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Abstract
In a sewing machine, a clamp-type work feeder includes an articulated, rotatable, telescoping tube carriage which can move in either direction parallel to the lower arm and rotate about the axis of the cylindrical end of the lower arm in accordance with a stored stitch program. A cylinder actuated clamp mechanism pivotally attached to the carriage allows simple work insertion and full peripheral stitching without unduly obstructing the operator's view or access to the stitching area.
Claims14
An automatic sewing machine, comprising
- parallel upper and lower arms with cooperating upper and lower stitch forming mechanisms including at least one work penetrating reciprocating needle carried by the upper arm,
- said lower arm terminating in an end having an upper cylindrical surface with a needle hole for receiving said reciprocating needle, the remainder of said lower arm end being of radial extent less than or equal to that of said cylindrical surface,
- a cylindrical work carrying sleeve slidably received over the end of said lower arm coaxial with said cylindrical surface thereof, said sleeve having a sewing window formed therein encompassing said needle hole,
- X-Y drive means for imparting to said sleeve translational motion along the axis thereof and rotational motion about the axis thereof in accordance with electronic commands, and
- clamp means connected for rotation and translation with said sleeve for releasably clamping the work to said window,
- whereby the work can be stitched inside the window as desired by controlling said X-Y drive means with a predetermined stitch program.
3 more elements
Dependencies are inferred from the claim text.