Alignment bushing

Details Alignment bushing Alignment bushing

1975-11-03

1978-12-26

Simpson, Othell M.

Cutting by use of rotating axially moving tool

Miscellaneous

Drill guide

B23B 3900, B23B 4700, B23G 100

Patent

active

041313852

ABSTRACT:
An alignment bushing for twist drills or the like includes a uniform cylindrical guide member having a bore therethrough which guides the drill to the workpiece, and a holder for securing the guide member to a jig plate adjacent the workpiece, the guide member being removable from and reversibly positionable in the holder. After the inner diameter of the guide member has become worn at one end due to repeated use, the guide member may be removed from the holder and reversibly repositioned therein for subsequent twist drill aligning usage. The holder may be selectively positioned along the length of the guide member readily to adapt the bushing to variable spacing occurring between different jig plates and workpieces.

REFERENCES:
patent: 2744424 (1956-05-01), Fisher
patent: 2857790 (1958-10-01), Lee
patent: 2942500 (1960-06-01), Conner
patent: 3097891 (1963-07-01), Brideau

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