Resources Contact Us Home
Electronic pattern control for a sewing machine

Image Number 7 for United States Patent #4141305.

A logic circuit generates in succession the stitch-control data for the successive stitches of a selected stitch pattern. The logic circuit does not store simultaneously all the stitch-control data for all the stitches of all the selectable stitch patterns, in the way done by conventional addressable random-access stitch-pattern memories. Instead, the logic circuit assumes successive states, in response to successive machine-synchronized pulses. In each state it generates, in the sense of bringing into existence for the first time, stitch-control data for the next stitch to be produced, this stitch-control data being derived from data related to a preceding stitch, e.g., the stitch-control data for the preceding stitch. The number of logic elements needed is low compared to that needed for a random-access stitch-pattern memory of the type storing all the stitch-control data for all the stitches of all the selectable patterns.

  Recently Added Patents
Visual indicator of online backup
Device and method for superimposing patterns on images in real time, particularly for guidance by location
Pyridazine compounds for controlling invertebrate pests
Pressure-sensitive adhesive composition having an improved release behavior
Single well reservoir characterization apparatus and methods
Telecommunications system and method
Biaxially oriented film which could be thermally laminated with paper and other substrates
  Randomly Featured Patents
Manufacturing methods and uses for micro pipe systems
Method and apparatus for injecting fuel into the cylinders of an engine having an injection input valve for each cylinder
Thermoplastic composition for setting bandages and a solventless process for the manufacture thereof
Power supply
Pressure sensing latch for a round baler
Fishing reel
Pressure relief valve
Energy drag chain
Treatment of neurological disorders by dsRNA administration
Backflow preventer for an injection molding machine