The cross chain type anti-skid devices are of less than wheel encircling dimensions and are secured to the wheel independently of each other. Such devices may be used singly upon the wheel.
(1) Note. For chain arrangement, see this class, subclass 217 and indented subclasses, and 239.
(2) Note. See Class 59, Chain, Staple, and Horseshoe Making, appropriate subclasses.