Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Adjustable – tool-guiding jig
Patent
1982-09-13
1984-05-15
Briggs, William R.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Adjustable, tool-guiding jig
408 72R, 408 97, B23B 4728
Patent
active
044485727
ABSTRACT:
A method of joining the mitred ends of two picture frame mouldings includes drilling a precisely positioned hole in the end face of each moulding and positioning a dowel in the holes prior to gluing the end faces together whereby the dowel serves to correctly relatively position the faces. Apparatus for facilitating correct positioning of the dowel holes comprises a frame moulding guiding member slidably mounted in a groove formed in a horizontal base plate. A guiding bush for a drill is provided on a vertically displaceable slide. The two edges of the guiding member nearest the slide are at 90.degree. to each other and 45.degree. to the axis of the bush. In use a frame moulding is clamped against one edge of the guiding member with the guide and slide members appropriately positioned and the end face of the moulding is drilled through the bush. The other moulding to be joined is clamped against the other edge of guiding member and similarly drilled.
REFERENCES:
patent: 100731 (1870-03-01), Crane
patent: 3464296 (1969-07-01), Harper
patent: 3557641 (1971-01-01), Schwandt
patent: 3695318 (1972-10-01), Maury
patent: 4158523 (1979-06-01), Schotzko
patent: 4174917 (1979-11-01), Brower
patent: 4332514 (1982-06-01), Dergo
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