Wenderoth, Lind & Ponack
Throw away insert
 An improved throw away insert is disclosed which can break chips satisfactorily in cutting by use of a large part of the cutting edge. It is provided with a large chip breaker projection and a plurality of small chip breaker projections disposed between each nose portion and the large projection. 
Sumitomo Electric Industries, Ltd.
Y B B
Y10T B23B B23B
additional additional inventional
Yoshikatsu
Mori