Blind rivet and improved method of blind riveting

Details Blind rivet and improved method of blind riveting Blind rivet and improved method of blind riveting

1976-06-29

1977-08-30

Larson, Lowell A.

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

85 77, B21J 1534, F16B 2100

Patent

active

040445917

ABSTRACT:
For use in pull-through blind riveting a plurality of tubular rivets is received on a reusable mandrel having a head and a stem, each rivet having a recess in its tail end which can accommodate a ring of metal separated by the mandrel head from the internal wall of the rivet set in a previous rivet-setting operation. Dimensions of the mandrel and its rivets insure that a complete ring rather than a crescent-shaped fragment is removed from the rivet being set, and this ring is caused to be retained in the recess of the next rivet to be set by the mandrel. In practicing the novel method, the separated ring of rivet metal is retained on the mandrel stem until the mandrel head is pulled through the ring in setting the next rivet.

REFERENCES:
patent: 3038626 (1962-06-01), Simmons
patent: 3136204 (1964-06-01), Reynolds
patent: 3489056 (1970-01-01), Blakeley

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