A leno device for use in weaving machines. The leno device having a first lifting shaft, a second lifting shaft and a half shaft. The shafts are connected with each other via a linkage mechanism having several transmission units Each transmission unit having a connecting bar and two guide rods. In order to prevent fingers and or the hand of the operator from being pinched between the connecting bar and one of the levers, the leno device has a separate cover part for each transmission unit. The cover part may be fastened to one of the lifting shafts or to one of the guide rods of the transmission unit, or to the connecting bar. The cover part prevents an operator from being able to reach between the connecting bar and the guide rods in warp thread direction.