Riveting motor tool

Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path

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72449, B21D 3100

Patent

active

045412669

ABSTRACT:
A riveting motor tool for use in fastening a pop rivet in which a fastening shank of the rivet having an enlarged end is inserted into a flanged sleeve body and the fastening shank is grasped to be torn off for forming a splayed portion at a free end of the sleeve. The tool grasps the fastening shank and is withdrawn by a slide shaft that is reciprocated by a rotary drive. Springs urge the shaft in the opposite direction. The rotary drive has teeth spaced apart from each other a distance greater than the stroke of the shaft, that engage with a lug on the shaft having arcuate recesses on each side of the lug for reception of the teeth, the rotary drive being reversible to engage the lug from either side. The shaft is hollow and torn off portions of the shank move lengthwise through the shaft out the rear end of the shaft which is disposed in a receptacle for receiving and retaining these torn off portions.

REFERENCES:
patent: 1803307 (1931-04-01), Wodack
patent: 2406949 (1946-09-01), Huck
patent: 3033410 (1962-05-01), Hanneman
patent: 3321033 (1967-05-01), Benuska
patent: 3822595 (1974-07-01), Elflein
patent: 3933025 (1976-01-01), Briles
patent: 4137747 (1979-02-01), Clarke et al.
patent: 4218911 (1980-08-01), Johnston
Henery T. Brown, "Mechanical Movements", 1893, pp. 24, 25, No. 81.

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