Title: Boring bar or the like

Abstract: A cutting tooth is carried on the outer end portion of a shaft which is eccentrically mounted within a power-rotated boring bar and which may be selectively turned within the bar to enable the tooth to be adjusted between an inactive retracted position and an active cutting position. By sliding the shaft in one direction, serrated rings mounted on the outer end portion of the shaft and within the outer end portion of the bar may be uncoupled to permit turning of the shaft. When the shaft is slid in the opposite direction, the rings are recoupled to establish a torsionally stiff rotational drive to the tooth by way of the outer end portions of the bar and the shaft. Turning of the shaft to adjust the tooth to its cutting position also effects outward adjustment of support pads for maintaining the outer end portion of the bar in a stable radial position during the boring operation.

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Inventors: Koblesky, Robert T. (Rockford, IL, US)

Application Number: 544318
Filing Date: 1975-01-27
Publication_date: 1976-06-08
Assignee: The Ingersoll Milling Machine Company (Rockford, IL)
Primary Class(es): 408/83 82/172, 279/6, 408/150
Other Classes:
US Patent Ref:

2195026	Mar, 1940	Eden	408/82.
2693965	Nov, 1954	Brine, Jr.	279/6.
3038386	Jun, 1962	Parske et al.	90/11.
3700345	Oct, 1972	Schubert	408/150.

Other Refs:
Primary Examiner: Simpson, Othell M.
Assistant Examiner: Bilinsky, Z. R.
Attorney: Wolfe, Hubbard, Leydig, Voit & Osann, Ltd.