Electric fence insulator cap

A fence post cap for installation on the top of a U-post, said U-post having legs which diverge from a central flat bight portion to outwardly extending flanges in a plane parallel to said central bight portion, said bight portion having longitudinally spaced outwardly extending fastening lugs, said cap comprising:

• a tubular body having an oblong cross-section with its wall symmetrical about a longer and a shorter axis at right angles to each other;
• a sloped top closing one end of said tubular body;
• two opposed pairs of adjacent longitudinally extending parallel ribs projecting inwardly from said wall parallel to said shorter axis with one rib of each pair being on each side of said shorter axis, the ribs of each pair being spaced apart a distance sufficient to receive a fastening lug therebetween;
• stepped ledges extending inwardly from said wall symmetrically arranged on both sides of said shorter and longer axes and parallel to said longer axis;
• whereby said cap can be driven onto said U-post by impacting said top, at least one of said ribs then contacting the flat bight portion of said post and each of said post flanges then contacting one of said stepped ledges for guiding said cap, and said cap then being retained on said post by the coaction of the cap wall against the ends of said flanges or the coaction of at least one of the ribs acting on the bight portion and the stepped ledges acting on the flanges of said U-post.