One-step buttonhole mechanism for sewing machine

Details One-step buttonhole mechanism for sewing machine One-step buttonhole mechanism for sewing machine

D - Textiles, Paper

05

B

112/3

D05B 3/06 (2006.01)

Patent

CA 1049851

ONE-STEP BUTTONHOLE MECHANISM FOR SEWING MACHINE ABSTRACT OF THE DISCLOSURE A device in a domestic sewing machine for auto- matically sewing a buttonhole pattern in four successive stages comprising, in order, lock stitches at one end, stitches to one side, lock stitches at the other end, and finally stitches at the other side. Only a single manual step, that of presetting an adjustable element to program the desired length of the buttonhole, is required of the operator to con- dition the machine. The device includes a set of cams for con- trolling needle amplitude, lateral position or base line, and direction and rate of feed. The cams are rotationally driven by a pair of ratchet wheels in timed relation to the formation of stitches. Means are provided to alternately establish and interrupt the drive to the ratchet wheels,and therefore the cams, at certain times in the sequence to effect appropriate changes in the sewing pattern.

271443

Affiliated with

Also associated with

Rating

One-step buttonhole mechanism for sewing machine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with One-step buttonhole mechanism for sewing machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and One-step buttonhole mechanism for sewing machine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-268979