Method for controlling a motion characteristic of a sley shaft for driving a reed

A method for controlling a motion characteristic of a sley shaft for driving a reed in a weaving loom having a main loom drive shaft, a cam drive including a drive cam disk operated by said main loom drive shaft and a cam follower connected to said sley shaft and cooperating with said cam disk, said method comprising the following steps:

• (a) driving said sley shaft through said cam drive,
• (b) first accelerating said sley shaft from a zero velocity to a reed return maximum velocity for moving said reed into a rear rest position opposite a beat-up position,
• (c) first decelerating said sley shaft to a first rotation reversal point where said reed reaches said rear rest position,
• (d) providing a reed rest period for a weft thread insertion when said reed is in said rear rest position,
• (e) second accelerating said sley shaft in an opposite beat-up direction to a beat-up velocity maximum, and
• (f) second discontinuously decelerating said sley shaft in at least a first deceleration phase (1A) and a second deceleration phase (2A), wherein said first deceleration phase (1A) extends between a first angular position where said beat-up velocity maximum is reached and a second angular position where said reed is entraining an inserted weft thread or a group of weft threads for beat-up, and wherein said second deceleration phase (2A) extends from said entraining of said weft thread or group of weft threads to beat-up of said weft thread or group of weft threads at a beat-up line along a fabric.