US Patent: 4,154,555 - Multiple Boring Head


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US Patent: 4,154,555

Multiple Boring Head

Patentee:

Frank C. Skrentner (exact or similar names) - Bloomfield Hills, Oakland County, MI

USPTO Classifications:

29/27C, 408/150, 408/158, 408/25, 408/26

Tool Categories:

metalworking machines : drilling and boring : boring heads

Assignees:

F. Jos. Lamb Co. - Warren, Macomb County, MI

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Apr. 03, 1978
Granted:	May 15, 1979

Patent Pictures:

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Description:

Abstract:

A machine tool having a boring bar carrying cutting tools and mounted for rotative adjustment on a rotary driven spindle with its axis offset from the axis of the spindle. An additional cutting tool is mounted for radial adjustment on the spindle individually of the boring bar. The tools on the boring bar and the cutting tool on the spindle are adjusted radially by means of a helically splined nut engaged with a similarly splined shaft which is rotated relative to the spindle in response to axial displacement of the shaft.