Hardware installation tool

Details Hardware installation tool Hardware installation tool

1992-02-27

1993-06-08

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Machine including plural tools

Plural, simultaneously operational tools

408 53, 408 79, 408112, B23B 4500

Patent

active

052173313

ABSTRACT:
An in line drilling device for boring holes an equal distance from one another in wood, plastic or metal, comprising a set of geared together shafts equipped with drilling bits. The bit holder shafts are guided by bearings housed in a frame biased upwardly by springs. The fully compressed springs act to limit the extent of projection of the drill bits into a workpiece.

REFERENCES:
patent: 2506202 (1950-05-01), Folkerth, Jr.
patent: 2918833 (1959-12-01), Stewart et al.
patent: 3389729 (1968-06-01), Macala
patent: 4728230 (1988-03-01), Blum
patent: 4917549 (1990-04-01), Geernaert
patent: 5085543 (1992-02-01), Click

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