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US 4,286,531 AGranted
Sewing apparatus
AssigneeEdward A. Shaw
InventorNormand Molloy
Life of this patent
Estimating the term…
Abstract
An apparatus for use in automatically sewing articles along a symmetrical, open-ended path. The articles can be sewn from either end of the path. The apparatus employs a cam means which corresponds to the open-ended path and control means, including a selector valve for automatically driving the cam means in either direction.
Claims9
An apparatus for use in substantially automatically sewing articles along a symmetrical, open-ended path comprising means for mounting each article on a support;
- means for moving the support to sew along the path from either end of the path to the other end, said support moving means including a first platform mounted for movement along a straight line, a second platform mounted for movement, on the first platform, along a straight line which is perpendicular to the first line, the support fixed to the second platform;
- first and second fluid operated devices to move the first and second platforms respectively in both directions in their straight line movement;
- and a hydraulic selector valve to sequentially control the operation of the first and second fluid operated devices.
Dependencies are inferred from the claim text.