Earth-working tool head

A head for a powered earth-working tool having a prime mover for rotating a shaft for driving the head, comprising:

• a housing having an opening for receiving the shaft;
• spindle means mounted in said housing;
• first and second separate elongated earth-working members mounted to swing from said spindle means for trenching, each having a first elongated portion extending from the vicinity of said housing and a second elongated portion angularly disposed with respect to said first portion and having a twisted orientation with respect to said first portion;
• and
• linkage means in said housing operatively connected to the shaft and to said members to swing said first and second members in a pendulum-like oscillation from said spindle means out of phase with one another.

A head for a powered earth-working tool having a prime mover for rotating a shaft for driving the head, comprising:

• a housing having an opening for receiving the shaft;
• spindle means mounted in said housing;
• first and second elongated earth-working members mounted to swing from said spindle means for sod cutting and lifting, each having a first elongated portion extending from the vicinity of said housing and a second elongated portion extending inwardly substantially perpendicularly to said first portion and substantially parallel to said spindle means, said inwardly extending portions being separated at their inner ends;
• and
• linkage means in said housing operatively connected to the shaft and to said members to swing each of said members in a pendulum-like oscillation from said spindle means.

A powered earth-working tool for operation by a standing operator, comprising:

• a housing having an opening;
• a prime mover outside said housing;
• a shaft operatively connected to said prime mover for rotation by said prime mover extending into said opening;
• spindle means mounted in said housing;
• first and second elongated earth-working members mounted to swing from said spindle means for sod cutting and lifting, each having a first elongated portion extending from the vicinity of said housing and a second elongated portion extending inwardly substantially perpendicularly to said first portion and substantially parallel to said spindle means, said inwardly extending portions being separated at their inner ends;
• and
• linkage means in said housing operatively connected to said shaft and to said members to swing each of said members in a pendulum-like oscillation from said spindle means.

A powered earth-working tool for operation by a standing operator, comprising:

• a housing having an opening;
• a prime mover outside said housing;
• a shaft operatively connected to said prime mover for rotation by said prime mover extending into said opening;
• spindle means mounted in said housing;
• first and second separate elongated earth-working members mounted to swing from said spindle means for trenching, each having a first elongated portion extending from the vicinity of said housing and a second elongated portion angularly disposed with respect to said first portion and having a twisted orientation with respect to said first portion;
• and
• linkage means in said housing operatively connected to said shaft and to said members to swing said first and second members in a pendulum-like oscillation from said spindle means out of phase with one another.