Hand-held apparatus for machining of cylinder head valve guide holes
AssigneeParts Manufacturing Company
InventorsJoseph Ordogh, Frank Ordogh
Life of this patent
Estimating the term…
Abstract
A cradle for a hand-held tool for machining of cylinder head valve guide holes. The tooling has a pilot portion. A collar has a passage for the tooling and is shaped to engage a least worn portion of a valve seat associated with the valve guide hole around the circumference thereof without engaging more worn portions of the valve seat. The cradle comprises a bracket which has a passage for the tooling without passage of the collar so that the bracket can bear on the collar. Force is applied to the bracket to hold the collar in engagement with the valve seat.
Claims20
A cradle for a hand-held tool for machining of cylinder head valve guide holes wherein the tool includes tooling having a pilot portion and a collar means having a tooling passage and which is shaped to engage a least worn portion of a valve seat associated with the valve guide hole around the circumference thereof without engaging more worn portions of the valve seat, the cradle comprising a bracket having aperture means sized for passage of the tooling without passage of the collar means so that the bracket may bear on the collar means, means for applying force to said bracket to hold the collar means in engagement with the valve seat, and means for mounting the cradle to the tool.
Hand-held apparatus for machining of cylinder head valve guide holes comprising a power tool including means for attaching thereto tooling having a pilot portion and receivable in a valve guide hole for machining thereof, collar means having passage means for the tooling and which has a shape to engage a least worn portion of a valve seat associated with the valve guide hole around a circumference thereof without engaging more worn portions of the valve seat, and means for holding said collar means in engagement with the valve seat during machining of the guide hole, said holding means comprising a bracket having aperture means sized for passage of the tooling without passing said collar means and with said bracket disposed between said tool and said collar means for bearing on said collar means, and means for applying force to said bracket to bear on said collar means to hold said collar means in engagement with the valve seat whereby to align, in combination with the tooling pilot portion, the tooling in the valve guide hole.
A method for aligning tooling having a pilot portion for machining of a cylinder head valve guide hole by a hand-held tool, the method comprising the steps of:
- a. applying to the tooling a collar which has a shape to engage a least worn portion of a valve seat associated with the value guide hole around a circumference thereof without engaging more worn portions of the valve seat;
- b. providing a bracket in a position to bear on the collar;
- c. inserting the tooling into the valve guide hole while operating the tool;
- and
- d. applying force to the bracket to hold the collar in engagement with the valve seat whereby to align, in combination with the tooling pilot portion, the tooling in the valve guide hole.
Dependencies are inferred from the claim text.