Device for the interruption of the embroidery needle movement on embroidery- or sewing machines

An embroidery machine, comprising

• a main drive shaft,
• a plurality of needle bars adapted for the working of different types and colors of threads respectively with an automatic change of the needle bars which are operatively driven respectively from time to time by said main drive shaft,
• a guide rod arranged parallel to said needle bars,
• a drive carriage is movably guided on said guide rod,
• means for connecting said drive carriage to said main drive shaft, comprising a crank and pivotally connecting rod connected to each other and to said drive shaft and said drive carriage, respectively,
• a contact member movably guided on said guide rod,
• switch pawl means for coupling said drive carriage to said contact member,
• a common needle bar block, means for mounting the latter displaceably transversely to an embroidery movement,
• said needle bars are mounted moveably adjacent and parallel to one another in said common needle bar block,
• a driver secured to each needle bar, respectively,
• said needle bars being adapted to be operatively coupable selectively to said drive carriage via said drivers in an embroidery position,
• a roller mounted on said driver of each of said needle bars, respectively,
• said contact member is formed with fork-shaped recess,
• said roller is insertable in said fork-shaped recess of said contact member, respectively,
• a stationary guide curve disposed at both sides of an upper dead-point position of said contact member, respectively,
• said rollers of the needle bars which are disposed outside of the embroidery position engage said guide curve,
• the distance of each said guide curve increases from a table of the embroidery machine with increasing distance from said contact member.