Automatic fastener assembling apparatus

Details Automatic fastener assembling apparatus Automatic fastener assembling apparatus

1987-07-13

1989-04-11

Yost, Frank T.

Elongated-member-driving apparatus

With interlock means

227 15, A41H 3704

Patent

active

048198528

ABSTRACT:
In an automatic fastener assembling apparatus, a device for actuating a drive to initiate the lowering of a punch includes a pivotable actuating lever having at its front end portion a lower sloping edge and at its rear end portion a projection the front end portion being normally urged upwardly by an extension spring. A safety cover is connected to the lever by a leaf spring normally defining with the sloping edge a triangular space. At the first stage of double-stage stepping of a foot pedal, the front end portion of the lever is lowered against the bias of the extension spring until the safety cover rests on a die. At the second stage, the front end portion is further lowered against the bias of both the extension and leaf springs to reduce the triangular space, thus causing the projection to depress a plunger of a microswitch for the drive.

REFERENCES:
patent: 3292837 (1966-12-01), Heil et al.
patent: 4485541 (1984-12-01), Seki
patent: 4598468 (1986-07-01), Yoshieda
patent: 4606487 (1986-08-01), Douri

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