Means for turning jigs on sewing machines
AssigneeAMF Incorporated
InventorMichael N. Bennison
Life of this patent
Estimating the term…
Abstract
In a sewing machine adapted to stitch a garment panel held in or on a jig which is to be passed through the machine and turned in its own plane at a corner thereof, means are provided for detecting the approach of the corner and auxiliary means operative to assist in the turning of the jig at the corner.
Claims6
In a sewing machine for use in association with a template having means defining a guide surface corresponding to a desired stitching profile, said sewing machine comprising a stationary quide element for engagement with said guide surface of the template and means for moving the template under the needle of the sewing machine with the guide surface running past said guide element, an improvement comprising means for detecting curvature in a portion of said guide surface in advance of its engagement with said guide element and means operative on detection by said detecting means of curvature of predetermined magnitude to exert a turning force on said template so as to assist in moving the curved portion of said guide surface past the guide element.
Dependencies are inferred from the claim text.