Fastening using air hammer

Details Fastening using air hammer Fastening using air hammer

1979-05-18

1981-03-24

McQuade, John

Elongated-member-driving apparatus

With interlock means

227 55, 227112, 227117, 227136, B25C 700

Patent

active

042575486

ABSTRACT:
A plurality of two-piece fasteners are connected together by frangible plastic and are automatically fed past moveable wall portions to an area where they are in operative position to be acted upon by impacting pistons. A first inner and a second, outer, concentric pistons are provided, the second piston driving the outer component of the two-piece fastener through metal sheets to be connected together, and the first piston driving the inner fastener component. A common actuating piston may be provided for driving the first and second pistons, with the magazine for the fasteners connected up to the low pressure side of the common piston. It is not possible to fire the impacting device until a handle thereof has been rotated against spring pressure and the bottom thereof is in contact with the work.

REFERENCES:
patent: 2445674 (1948-07-01), Kendall
patent: 2707277 (1955-05-01), Aldrich
patent: 3056965 (1962-10-01), Rogers
patent: 3233523 (1966-02-01), Passaggio
patent: 3672029 (1972-06-01), Butriss
patent: 3724738 (1973-04-01), Hurst
patent: 3979039 (1976-09-01), David
patent: 4089099 (1978-05-01), Nivet

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