Henry P Muller

US Patent:

40474534, Sep 13, 1977

Filed:

Mar 10, 1976

Appl. No.:

5/665676

Inventors:

Henry J. Muller - Stamford CT

Assignee:

Pitney-Bowes, Inc. - Stamford CT

International Classification:

B23B 2924

US Classification:

74813R

Abstract:

An indexing attachment is disclosed that is adapted for use with a Van Norman dividing head. The Van Norman dividing head has a rotatable chuck for indexing a workpiece at six minute intervals. The inventive attachment is placed upon the dividing plate of the head and increases the indexing capability of the dividing head, such that 1 minute intervals of rotation are obtained. The attachment comprises a disc having a cylindrical stem extending from a mid-portion thereof. The stem is placed in any one of several holes disposed in the dividing plate. The disc of the attachment contains apertures arranged in a spiral pattern on its face. The apertures receive the retractable pin of the indexing arm of the head, in place of the holes of the dividing plate. The spiral pattern of the apertures of the attachment subdivide the interval spacing between successive holes of the dividing plate.