Device and a method for sensing breakage or end of warp yarn for a fabric weaving loom

A device for sensing a breakage of or an end of a warp yarn on a circular weaving machine (CWM), said device comprising:

• a yarn-end detection means configured to detect the breakage of or the end of said warp yarn, and a notification means to notify a loom operator of the breakage of or the end of the warp yarn, said yarn-end detection means comprising a first element provided with a cavity/opening corresponding to a drop wire that corresponds to the warp yarn, said drop wire passing through said cavity/opening, and said drop wire having a loop or an eye for passage of said warp yarn, said drop wire being held in its normal operating position due to tension in said warp yarn,
• said drop wire including a motion restrictor element;
• a second element having a hole provided for said drop wire, through which said drop wire passes;
• a first sensing element is affixed to said first element;
• a second sensing element is affixed to said second element;
• and
• wherein said first element is rotatable at its ends, and wherein, subsequent to the falling of said drop wire from its normal operating position due to substantial loss of tension in said warp yarn, the fall of said drop wire is halted by said motion restrictor element being obstructed by the cavity/opening, whereby said first element rotates to establish a contact between said first and second sensing elements, and in the case where said contact remains in place for longer than a predetermined period, a notification signal is sent to the loom operator indicating malfunction of said loom.