Dwell assembly back spotface

Details Dwell assembly back spotface Dwell assembly back spotface

1982-08-06

1984-03-06

Briggs, William R.

Cutting by use of rotating axially moving tool

With stopping upon completion of prescribed operation

408129, 408141, B23B 3900

Patent

active

044351097

ABSTRACT:
A dwell assembly back spotface for use with a reverse feed drill to provide an accurate depth of cut together with cutter dwell to insure a clean hole.

REFERENCES:
patent: 1219537 (1917-03-01), Dalton
patent: 3487729 (1970-01-01), Juhasz et al.
patent: 3762827 (1973-10-01), Ziegelmeyer
patent: 3767313 (1973-10-01), Bohoroquez et al.
patent: 4273481 (1981-06-01), Corley et al.

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