Adapter for power tool installation of tangless helically coiled

Details Adapter for power tool installation of tangless helically coiled Adapter for power tool installation of tangless helically coiled

1984-02-21

1985-07-16

Jones, Jr., James L.

Metal working

Means to assemble or disassemble

By rotation of work part

81443, B25B 2308

Patent

active

045287376

ABSTRACT:
A power-driven insertion tool for a helically coiled wire insert of the type used for tapped holes in parent material that is generally softer than a fastener being screwed into the tapped hole, whereby a mandrel having a threaded lead portion and a pivotal pawl inserted in a groove below the threaded portion so that the pawl engages a recess of the insert, in order that the insert may be screwed into the tapped hole. A sleeve, concentric to the threaded mandrel, maintains the insert's helix angle for a smooth transition into the tapped hole. An adjusting nut adjusts the depth to which an insert may be installed and whereby a free spinning bearing contacts the parent material and automatically reverses the torque of the tool.

REFERENCES:
patent: 1676755 (1928-07-01), Doherty
patent: 2390524 (1945-12-01), Eckener
patent: 2392843 (1946-01-01), Eckener
patent: 2832129 (1958-04-01), Forster

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