Drilling and counterboring apparatus and method for toe fastenin

Woodworking – Process – Mechanical cutting or shaping

Patent

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Details

29 33R, 144 3R, 144 93R, 144134R, 144367, 408 26, 409199, B27M 108, B27C 100

Patent

active

046037195

ABSTRACT:
A method and apparatus for forming a counterbore and a bore in a workpiece for toe fastening of the piece to a second member is disclosed. The apparatus includes a router mounted with its cutting bit transverse to the workpiece so that the bit may be progressively urged into the workpiece surface to produce a shallow counterbore. Additionally, a drillbit is mounted so that it can be urged from the edge of the workpiece in an opposite direction toward the counterbore to produce a fastener receiving bore which communicates with the counterbore. The router and drill are mounted on a common carriage, and in one embodiment the carriage is pivoted, while in another it is slid, in opposite directions to produce the counterbore and bore. A method of forming the bore and counterbore is also disclosed.

REFERENCES:
patent: 1335544 (1920-03-01), Anders
patent: 1602658 (1926-10-01), Germain
patent: 3496974 (1970-02-01), Munsil et al.
patent: 3675312 (1972-07-01), Herman

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