Abstract: In an anti-skid device for motor vehicles, having a plurality of chain strands (10) distributed over the periphery of a holder (4), which holder can be set into a rotational motion, the holder exhibits a hub (6) having a ring collar (11). The ring collar (11) is surrounded by the ring bar (ring web) (18) of a friction wheel (7). Two plates (14, 15) of a pair of clamping plates are pressed by screw connections (16) against the side faces of the ring collar (11) and of the ring bar. The lower plate (15) is provided with slots (18) through which the ends of end links (20) of the chain strands (10) protrude into chambers (19) disposed in the ring bar (8) of the friction wheel. The anchorage of the end 1 inks (20) in the chambers (19) is here served by bolts (21).

Abstract: In an anti-skid device for vehicle wheels the tread network is formed by components (5) made of rubber or plastic and chain strand sections (3,4) mutually connecting the latter. The components (5) consists of longitudinal pieces (10 and 11) substantially aligned with the chain strand sections (3,4) arranged in the region of the shoulders of a tire fitted onto a vehicle wheel and X-shaped distance elements (12) retaining said longitudinal pieces at a mutual distance. The longitudinal pieces (10,11) are equipped with spikes (7) in the region of projections (6) of high relief construction.