Slug retainer

Details Slug retainer Slug retainer

1986-07-03

1987-06-30

Briggs, William R.

Cutting by use of rotating axially moving tool

With product handling or receiving means

B23B 5104

Patent

active

046767010

ABSTRACT:
Cutting teeth around the lower edge of an inverted cup-like cutter cut a circular kerf resulting in a circular slug being cut from the material being worked on. The proximal end of a retainer is fixed centrally of the cutter and the distal end projects beyond the plane of the teeth so the resilient tab means on the distal end can be deflected inwardly towards the longitudinal axis of the retainer as the retainer passes through a pilot hole in the material. The tabs engage the underside of the material when the retainer has been passed through the pilot hole and enable removal of the slug through the hole cut by the cutter.

REFERENCES:
patent: 485715 (1892-11-01), Smith
patent: 2601434 (1952-06-01), Du Bois
patent: 2800812 (1957-07-01), Mueller et al.
patent: 2941427 (1960-06-01), Ver Nooy
patent: 3349792 (1967-10-01), Larkin
patent: 3922107 (1975-11-01), Fowler
patent: 4057357 (1977-11-01), Daghe et al.
patent: 4279551 (1981-07-01), Wilterding

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