Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Servo device for a multineedle sewing machine with engageable and disengageable needle bars










Image Number 5 for United States Patent #4815404.

A servo device for a multineedle sewing machine which includes two needle bars; driving and steop devices for said needle bars; devices for engaging and disengaging the two needle bars relative to the driving and stop devices; a feed-length adjustment device associated with at least one feed dog for the transport of the material being sewn; an adjustable thread tensioning device for the needle threads; devices for locking each needle bar selectively in its highest position; a positioning drive for the multineedle sewing machine; and a device including a position indicator attached to an arm shaft of the multineedle sewing machine, for adjusting the speed of rotation and positioning of the needle bars in predetermined positions. The servo device comprises a control system including a pair of electrical switches which respectively correspond to the needle bars, for controlling the engagement and disengagement of the needle bars relative to the driving and stop devices; a first setting device associated with the control system, for selectively interrupting the transport by the feed dog of the material being sewn; and a second setting device associated with the control system, for temporarily increasing a thread tensioning force exerted on the needle thread by the thread tensioning device.








 
 
  Recently Added Patents
Associating objects in databases by rate-based tagging
Probiotic Bifidobacterium strains
Distylium plant named `PIIDIST-I`
Bus controller for handling split transactions
Precoding codebooks for MIMO communication systems
Method for determining a corrected variance representative of the condition of reception of signals representative of symbols
Method and devices for handling access privileges
  Randomly Featured Patents
eDRAM memory cell structure and method of fabricating
Method and apparatus for transporting data using label switching
Wedging tool
Market information machine
Image processing apparatus and method thereof
Method for preventing malaria
Sensor provided with adjusting function
Reorder system for use with an electronic printing press
Pickup truck tailgate trimpiece
Recessed light fixture