Abstract: A relatively great number of embroidering locations with the appropriate embroidering implements are arranged in at least one row. The embroidering implements are capable of being coupled to and uncoupled from the embroidering implement drive of the embroidering machine according to a predetermined repetition and color-change program by electromagnetic actuation devices. Therefore, according to the invention, a so-called group-switching of the embroidering locations, respectively of their electromagnets, is performed such that groups of a few embroidering locations, respectively their electromagnetic actuation devices, form switching groups or units. The electromagnetic actuation devices of each switching unit are connected in parallel at their input sides. An input conductor common to the switching unit connects them to the embroidering location control device.

Abstract: A freely rotatably mounted roll body couplingly engageable with a brake shaft comprises an exchangeable thread brake liner. The rotatable roll body carrying the thread brake liner in a groove is exchangeably mounted between stationary guide discs which extend radially beyond the roll body on both sides and form a radial continuation of walls of the roll body, laterally defining a thread groove with their radially protruding portions and between which the roll body is exchangeably arranged.

Abstract: A relatively great number of embroidering locations with the appropriate embroidering implements are arranged in at least one row. The embroidering implements are capable of being coupled to and uncoupled from the embroidering implement drive of the embroidering machine according to a predetermined repetition and color-change program by electromagnetic actuation devices. The pattern and machine-function control of the embroidering machine is performed via a data carrier whose reading and evaluation unit controls a pattern and machine-function control device. Data for the repetition and color-change program are also placed on this data carrier for pattern and machine-function control. Suitable further data are also placed on this data carrier for actuating a switch associated with the reading and evaluation unit for transmitting the repetition and color-change program to an embroidering location control device connected to the electromagnetic actuation devices of the embroidering implements.

Abstract: The needle of an individual embroidery location of a multitude or row of linearly arranged embroidery locations in an embroidery machine is mounted at an axially displaceably guided needle carrier. According to a programmed control and by means of a related switching lever the needle can be individually coupled to or decoupled from an oscillating drive rail which is common to all the needles of the row. A thread guiding roller which is journaled for free rotation at a roller supporting lever and associated with a related one of the needles supplies a thread to the related needle. Simultaneously with the coupling or decoupling of the needle to the oscillating drive rail the roller supporting lever is pivoted between an operative position and an inoperative position in which the thread guiding roller is respectively coupled to or decoupled from a braking member which is common to all embroidery locations.

Abstract: A positioning device for a mechanical switching lever arrangement in an embroidery machine comprises an electromagnetic device which serves for displacing a pawl lever between a first end position and an intermediate position. The pawl lever serves for actuating a switching lever arrangement. The positioning device further comprises a mechanical amplifier device for displacing the pawl lever between the aforementioned intermediate position and a second end position. At its free end region the pawl lever carries a permanent magnet which continuously adheres to the electromagnet when the same is deenergized. The mechanical amplifier device, which cooperates with the pawl lever, comprises an externally actuatable switching lever arrangement. By pivoting this switching lever arrangement the pawl lever can be displaced from its intermediate position to the second end position and vice versa.

Abstract: At an embroidery machine there are mounted and displaceably guided two rows of embroidering implement rods which can be connected so as to be operatively coupled or decoupled in accordance with a desired program to a related one of two operatively associated oscillating drive rails. The embroidering implement rods which are related to the same embroidery location or position and which are, for instance, arranged in superimposed relation, can be simultaneously coupled to or decoupled from the operatively associated drive rail by means of a common switching lever. This switching lever can be actuated either directly or manually by means of adjustment levers and automatically by means of an electromagnetic device. This individual switching of all implements of an embroidery location enables easily adjusting any desired combination of working and inactive embroidery locations.