Vermeer Manufacturing Company, Inc.

Mark Unzicker

Mark R Cooper

An excavating apparatus having a prime mover with a longitudinal centerline and a main frame with an engine, a ground drive system and an excavation boom operatively attached thereto wherein the excavation boom has a first end and a second end. The first end of the boom is operatively pivotally attached to the main frame along a main frame pivot axis. The main frame pivot axis is transverse to the longitudinal centerline of the prime mover. A head shaft operatively rotatably attached to the second end of the boom and is operatively pivotally attached to the second end of the boom. Also, the excavation drum is mounted onto the head shaft in a manner that the excavation drum cooperates with the excavation chain and a fixed cutter pattern of the excavation chain to stay in consistent alignment with the fixed cutter pattern of the excavation drum.

Excavation apparatus

An excavating apparatus having a prime mover with a longitudinal centerline and a main frame () with an engine, a ground drive system and an excavation boom operatively attached thereto wherein the excavation boom has a sub-frame () with a first end and a second end. The first end of the sub-frame () is operatively pivotally attached to the main frame () along a main frame pivot axis (). The main frame pivot axis is transverse to the longitudinal centerline of the prime mover. A head shaft () operatively rotatably attached to the second end of the sub-frame () along a head shaft axis () and the head shaft axis () is transverse to the longitudinal centerline of the prime mover. An excavating drum () is operatively attached to the head shaft () for rotation about the head shaft axis (). The head shaft () is operatively pivotally attached to the second end of the sub-frame () along an axis () which is fixed with or parallel to a line () which is fixed with respect to the main frame pivot axis () and which is substantially perpendicular to the main frame pivot axis () whereby the position of the head shaft axis () can be adjusted with respect to the position of the main frame pivot axis () from a position parallel to the main frame pivot axis () to positions not parallel to the main frame pivot axis (). Also, the excavation drum () is mounted onto the head shaft () in a manner that the excavation drum () cooperates with the excavation chain () and a fixed cutter pattern of the excavation chain () to stay in consistent alignment with the fixed cutter pattern of the excavation drum ().

An excavating apparatus having a prime mover with a longitudinal centerline and a main frame with an engine, a ground drive system and an excavation boom operatively attached thereto wherein the excavation boom has a first end and a second end. The first end of the boom is operatively pivotally attached to the main frame along a main frame pivot axis. The main frame pivot axis is transverse to the longitudinal centerline of the prime mover. A head shaft operatively rotatably attached to the second end of said boom and is operatively pivotally attached to the second end of said boom. Also, the excavation drum is mounted onto the head shaft in a manner that the excavation drum cooperates with the excavation chain and a fixed cutter pattern of the excavation chain to stay in consistent alignment with the fixed cutter pattern of the excavation drum.

An excavating apparatus having a prime mover with a longitudinal centerline and a main frame with an engine, a ground drive system and an excavation boom operatively attached thereto wherein the excavation boom has a sub-frame with a first end and a second end. The first end of the sub-frame is operatively pivotally attached to the main frame along a main frame pivot axis. The main frame pivot axis is transverse to the longitudinal centerline of said prime mover. A head shaft operatively rotatably attached to the second end of said sub-frame along a head shaft axis and the head shaft axis is transverse to the longitudinal centerline of the prime mover. An excavating drum is operatively attached to the head shaft for rotation about said head shaft axis. The head shaft is operatively pivotally attached to the second end of said sub-frame along an axis which is fixed with or parallel to a line which is fixed with respect to said main frame pivot axis and which is substantially perpendicular to said main frame pivot axis whereby the position of the head shaft axis can be adjusted with respect to the position of the main frame pivot axis from a position parallel to said main frame pivot axis to positions not parallel to said main frame pivot axis. Also, the excavation drum is mounted onto the head shaft in a manner that the excavation drum cooperates with the excavation chain and a fixed cutter pattern of the excavation chain to stay in consistent alignment with the fixed cutter pattern of the excavation drum.

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Edmond, OK, United States of America

Mark Unzicker