Firma Botek Praezisions-bohrtechnik Schur & Co.

Gotthold Schur

Lothar Herrmann

A boring device adapted for deep well drilling wherein a cutting plate is fixed in operative position in a recess of a boring head by means of a clamping bolt. The cutting plate is reversible and its position in the boring head is adapted to be adjusted in a substantially radial direction. The cutting plate has a serrated surface and the bottom of the recess has a matingly serrated surface which when contacting each other enhance the clamping action of the clamping bolt.

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Riederich, Germany

Gotthold Schur