Title: No dialing boring head, sizing blocks for standard sizes, shims and spacers with blocks for intermediate sizes, optional pin holes for quick change

Abstract: An improved boring head assembly that is designed for being easily and accurately adjusted to different standard sizes of boring diameters so that it can be accomplished by persons without having a great deal of skill; the device consisting of a spindle for insertion into a chuck of a machine, and an adaptor adjustably mountable on the end of the spindle so to be axially offset a particular amount which is accomplished by means of specifically dimensioned blocks interchangeably placed therebetween, the adaptor serving to hold a boring bar which on its end retains a flying cutter.

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Inventors: Chetirko, John (Flushing, NY, US)

Application Number: 572463
Filing Date: 1975-04-28
Publication_date: 1976-11-30
Assignee:
Primary Class(es): 408/116 82/158, 408/186
Other Classes:
US Patent Ref:

2028134	Jan, 1936	Brubaker	82/34.
2472040	May, 1949	Brookfield	279/6.
3408885	Nov, 1968	Mendenhall	82/36.
3625624	Dec, 1971	Fitzsimmons	408/116.
3731565	May, 1973	Bankhurst	82/36.

Other Refs: 2,010,35022,586

Nov, 1971	DT
Oct, 1911	UK

Primary Examiner: Simpson, Othell M.
Assistant Examiner: Briggs, W. R.
Attorney: Miller; Richard L.