Show haud overshoes oe s on those who traverse muddy roads will be interested in a recently patented device for preventing overshoes from being pulled off by deep mud it la Is in the shape of two metal grippers that clump clamp the overshoe ioe to tile the shoe itself for it a high alioe there la 19 A a hook that Is attached to tile the top ot of the shoe arid and extends down to hold bold tile gripping jaws the jaws are ara movable so that too much wear will not be brought to bear on ono one spot scientific american |