Fastener installation apparatus

Details Fastener installation apparatus Fastener installation apparatus

1988-04-04

1989-03-28

Jones, David

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

7245317, 72440, B21J 1534

Patent

active

048153109

ABSTRACT:
A hand-held pneumatically-powered breakstem rivet placing tool comprises a pulling head (12) driven by a pneumatic piston and cylinder device (13). The drive is transmitted by way of a chain (15), one end (45) of which is secured to the body (11) of the tool and the other end (49) of which is secured to the piston rod (35) of the pneumatic device. Between its two ends the chain forms a loop which passes over a roller (52) which is connected to the pulling head (12) by way of a link mechanism (54, 58). When the pneumatic device (13) is actuated, the movable end (49) of the chain is pulled down, thus pulling the roller (52) and driving the head (12) to place a rivet. The roller (52) is carried on the top of a plunger (56) which is continuously urged upwards by air pressure in the cylinder (63) in which it slides, thereby to return the mechanism to its original position after a rivet has been placed.

REFERENCES:
patent: 1337379 (1920-04-01), Zawada
patent: 2737066 (1956-03-01), Riemenschneider
patent: 3047182 (1962-07-01), Batten
patent: 3374656 (1968-03-01), Di Maio
patent: 3657915 (1972-04-01), Lee
patent: 3981177 (1976-09-01), Di Maio et al.
patent: 4088004 (1978-05-01), Di Maio et al.

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