Title: Guide means for boring bars

Abstract: A boring bar has a free end that extends beyond the boring tool and has a guide roller rotatably mounted on the free end about an axis which is parallel to and offset from the boring bar axis. A guide bushing is supported in concentric alignment with the free end of the boring bar and rollably engages the guide roller at a point whose radius with respect to the boring bar axis extends in the same direction as the boring tool. The boring bar is preferably necked down between its supported end and the boring tool to facilitate deflection of the boring bar in response to pressure applied to the free end thereof by the guide roller and guide bushing.

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Inventors: Janiszewski, Kasimir (Franklin, WI, US)

Application Number: 505393
Filing Date: 1974-09-12
Publication_date: 1976-09-21
Assignee:
Primary Class(es): 82/1.4 408/82, 408/241B
Other Classes:
US Patent Ref:

2152954	Apr, 1939	Campbell	408/78.
2234039	Mar, 1941	Busjaeger	408/159.
2257609	Sep, 1941	Kollath	408/202.
2395751	Feb, 1946	Newcomer	408/241.
2643554	Jun, 1953	Sperisen	408/241.
2747948	May, 1956	Jergens	408/82.
3795160	Mar, 1974	Janiszewski	82/1.
3935764	Feb, 1976	Janiszewski	82/1.

Other Refs: 903,3951,283,076

Dec, 1953	DT
Nov, 1968	DT

Primary Examiner: Simpson, Othell M.
Assistant Examiner: Briggs, W. R.
Attorney: Fuller; Henry C.