Door hardware preparation jig

Details Door hardware preparation jig Door hardware preparation jig

1988-01-11

1989-03-21

Weidenfeld, Gil

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

Work-gripping clamp

408 3, 408115R, 33197, B23B 4100

Patent

active

048138266

ABSTRACT:
A jig for use with routers and other augering equipment for cutting the proper openings in a door for the installation of mortise locks. The jig formed in a U-shaped configuration is placed over the edge of the door at a proper height from the door sill or from the heading of the door frame and through a pivotal end plate adjustably positions itself on the door regardless of the contour of the encased edge of the door.

REFERENCES:
patent: 2519468 (1950-08-01), Hengst
patent: 2843167 (1958-07-01), Rushton
patent: 3212366 (1965-10-01), Russell et al.
patent: 4306823 (1981-12-01), Nashlund

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