A crank-type drive device for a loom including a crank hub non-rotatably attached to a drive shaft, a holder non-rotatably attached to the crank hub, an eccentric shaft supported by the holder, and a connecting member rotatably supported by the holder via the eccentric shaft and a bearing and connected to a drive target member of a loom. The crank hub includes a plate-shaped attaching part which an attached surface of the holder is attached thereto and has an attaching surface in contact with the attached surface, and a fixing mechanism for fixing the crank hub to the drive shaft, the drive shaft being inserted and fitted in the fixing mechanism. The crank hub is configured so that the fixing mechanism is positioned on the attaching surface-side of the attaching part in a plate thickness direction.

A crank-type drive device for a loom including a crank hub non-rotatably attached to a drive shaft, a holder non-rotatably attached to the crank hub, an eccentric shaft supported by the holder, and a connecting member rotatably supported by the holder via the eccentric shaft and a bearing and connected to a drive target member of a loom. The crank hub includes a plate-shaped attaching part which an attached surface of the holder is attached thereto and has an attaching surface in contact with the attached surface, and a fixing mechanism for fixing the crank hub to the drive shaft, the drive shaft being inserted and fitted in the fixing mechanism. The crank hub is configured so that the fixing mechanism is positioned on the attaching surface-side of the attaching part in a plate thickness direction.

The disclosure concerns a shed-forming device including a jacquard device in which the heddles, are connected to a pull-back element, for exerting a downward force on the heddle, wherein for each heddle, a yarn tensioning element is provided to change the yarn tension in at least one associated warp thread, and where a control or steering unit is provided for steering or controlling the yarn tension in at least one associated warp thread, separately for each heddle, in order to bring the total downward force on the heddle to a specific value or vary this according to a specific profile.

The disclosure concerns a shed-forming device including a jacquard device in which the heddles, are connected to a pull-back element, for exerting a downward force on the heddle, wherein for each heddle, a yarn tensioning element is provided to change the yarn tension in at least one associated warp thread, and where a control or steering unit is provided for steering or controlling the yarn tension in at least one associated warp thread, separately for each heddle, in order to bring the total downward force on the heddle to a specific value or vary this according to a specific profile.

Disclosed is a weaving method with which the yarn tension of several part groups with at least one warp thread per part group is controlled or adjusted separately, in order to follow a respective reference yarn tension profile during weaving, where, for at least one part group, the reference yarn tension profile is changed during weaving, where the reference yarn tension profile is determined and changed separately for at least two part groups, and where each reference yarn tension profile is selected from a collection of different reference yarn tension profiles. Also disclosed is a weaving machine provided with yarn tensioning elements, a storage unit in which said collection is provided, and a control or steering unit in order, in cooperation with the yarn tensioning elements, to adjust or control the yarn tension in separate warp threads using the indicated weaving method.

Disclosed is a weaving method with which the yarn tension of several part groups with at least one warp thread per part group is controlled or adjusted separately, in order to follow a respective reference yarn tension profile during weaving, where, for at least one part group, the reference yarn tension profile is changed during weaving, where the reference yarn tension profile is determined and changed separately for at least two part groups, and where each reference yarn tension profile is selected from a collection of different reference yarn tension profiles. Also disclosed is a weaving machine provided with yarn tensioning elements, a storage unit in which said collection is provided, and a control or steering unit in order, in cooperation with the yarn tensioning elements, to adjust or control the yarn tension in separate warp threads using the indicated weaving method.

A crank-type drive device for a loom including a crank hub non-rotatably attached to a drive shaft, a holder non-rotatably attached to the crank hub, an eccentric shaft supported by the holder, and a connecting member rotatable supported by the holder via the eccentric shaft and a bearing and connected to a drive target member of a loom. The crank hub includes a plate-shaped attaching part which an attached surface of the holder is attached thereto and has an attaching surface in contact with the attached surface, and a fixing mechanism for fixing the crank hub to the drive shaft, the drive shaft being inserted and fitted in the fixing mechanism. The crank hub is configured so that the fixing mechanism is positioned on the attaching surface-side of the attaching part in a plate thickness direction.

A crank-type drive device for a loom including a crank hub non-rotatably attached to a drive shaft, a holder non-rotatably attached to the crank hub, an eccentric shaft supported by the holder, and a connecting member rotatable supported by the holder via the eccentric shaft and a bearing and connected to a drive target member of a loom. The crank hub includes a plate-shaped attaching part which an attached surface of the holder is attached thereto and has an attaching surface in contact with the attached surface, and a fixing mechanism for fixing the crank hub to the drive shaft, the drive shaft being inserted and fitted in the fixing mechanism. The crank hub is configured so that the fixing mechanism is positioned on the attaching surface-side of the attaching part in a plate thickness direction.

Disclosed is a weaving method with which the yarn tension of several part groups with at least one warp thread per part group is controlled or adjusted separately, in order to follow a respective reference yarn tension profile during weaving, where, for at least one part group, the reference yarn tension profile is changed during weaving, where the reference yarn tension profile is determined and changed separately for at least two part groups, and where each reference yarn tension profile is selected from a collection of different reference yarn tension profiles. Also disclosed is a weaving machine provided with yarn tensioning elements, a storage unit in which said collection is provided, and a control or steering unit in order, in cooperation with the yarn tensioning elements, to adjust or control the yarn tension in separate warp threads using the indicated weaving method.

Disclosed is a weaving method with which the yarn tension of several part groups with at least one warp thread per part group is controlled or adjusted separately, in order to follow a respective reference yarn tension profile during weaving, where, for at least one part group, the reference yarn tension profile is changed during weaving, where the reference yarn tension profile is determined and changed separately for at least two part groups, and where each reference yarn tension profile is selected from a collection of different reference yarn tension profiles. Also disclosed is a weaving machine provided with yarn tensioning elements, a storage unit in which said collection is provided, and a control or steering unit in order, in cooperation with the yarn tensioning elements, to adjust or control the yarn tension in separate warp threads using the indicated weaving method.