Protective wear sleeve having tapered lock and retainer

A joint coupling comprising:

• a female member,
• a male member,
• said male member having an external portion and a portion that is adapted to being received in said female member, said male member portion that is adapted to be received including a rearward disc end portion, an annular groove portion, a forward tapered portion and a retainer,
• wherein when said male member is hammered into position inside said female member, said retainer is biased outwards against said female member,
• whereby once said male member is set in said female member, said male member will remain in said female member without relative rotational or axial movement between said male member and said female member.

An apparatus for mounting a cutting tool used in mining, road working or earth moving comprising:

• a bit holder including a cavity bore having a rearward cylindrical portion,
• a protective wear sleeve for reducing wear between the cutting tool and said bit holder, said protective wear sleeve having a portion that is adapted to being received in said bit holder, said wear sleeve portion that is adapted to be received including a rearward disc end portion, an annular groove portion, a forward tapered portion and a retainer,
• wherein when said protective wear sleeve is hammered into position inside said bit holder, said retainer is biased outwards against said rearward cylindrical portion,
• whereby once said protective wear sleeve is set in said bit holder by axial blows with a hammer, said protective wear sleeve will remain in said bit holder without relative rotational or axial movement between said protective wear sleeve and said bit holder.

An apparatus for mounting a cutting tool used in mining, road working or earth moving comprising:

• a bit holder including a cavity bore having a forward tapered portion and a rearward cylindrical portion,
• a protective wear sleeve for reducing wear between the cutting tool and said bit holder, said protective wear sleeve having a portion that is adapted to being received in said bit holder, said wear sleeve portion that is adapted to be received including a rearward disc end portion, an annular groove portion, a retainer and a forward tapered portion,
• wherein when said protective wear sleeve is hammered into position inside said bit holder, said retainer is biased outwards against said rearward cylindrical portion,
• whereby once said protective wear sleeve is set in said bit holder by axial blows with a hammer, said protective wear sleeve will remain in said bit holder without relative rotational or axial movement between said protective wear sleeve and said bit holder.