Electrical automatic pattern stitching sewing machine

Sewing – Work manipulating – Guides

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

D05B 302

Patent

active

042991803

ABSTRACT:
The needle-shifting zig-zag unit and the work feeding unit are moved to different positions, when necessary, for successive stitches, to form a stitching pattern. Each unit is powered by the main rotating drive shaft of the sewing machine. However, each unit is provided with a respective stepper motor. Each stepper motor changes the setting of an adjuster in a reciprocating-motion generator driven by the main drive shaft. When one of these adjusters is in a constant setting, its respective reciprocating-motion generator continually generates reciprocating motion of constant corresponding amplitude, for an unlimited time, so long as the drive shaft rotates. The needle-penetration coordinates for the stitching pattern are established by continually changing the amplitude of the reciprocations performed by the two reciprocating-motion generators. A static memory is read out, in synchronism with sewing, to furnish information commanding the stepper motors to move the amplitude adjusters of the reciprocating-motion generators from one amplitude setting to another, very quickly, to in this way establish all the successive needle-penetration coordinates for even complex stitching patterns.

REFERENCES:
patent: 4145982 (1979-02-01), Kume et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Electrical automatic pattern stitching 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 Electrical automatic pattern stitching sewing machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical automatic pattern stitching sewing machine will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2358022

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.