Cutting – Processes – With reorientation of tool between cuts
Patent
1983-07-29
1985-05-28
Yost, Frank T.
Cutting
Processes
With reorientation of tool between cuts
83 36, 83463, 834771, 834861, 83574, 83743, 269 91, 269100, B27B 904
Patent
active
045192804
ABSTRACT:
A device for making miter cuts in workpieces includes a saw guide pivoted to either a bottom surface B or a top surface A of a board. The saw guide includes two plates spaced above the board surfaces by a pivot assembly and a swing assembly. Almost any commercially available circular power saw may be accommodated by placing the saw base on the plates, positioning the saw blade within alignment slots in the assemblies, and adjusting rails on the plates against the saw base. A keeper on one of the rails prevents the saw from jumping out of the saw guide. When the rails are properly adjusted, the circular saw blade will travel along a saw line between the plates from alignment slot to alignment slot. The top surface A of the board has a straight edged backup adjacent a planar work area. 90.degree. and 45.degree. stops on the top surface reliably and accurately position the saw line normal to or at a 45.degree. angle to the straight edge and aligned with 90.degree. and 45.degree. slots in the backup. Angled miter cuts are also made on the top surface by positioning the saw guide in the 90.degree. stops, and aligning the side of the workpiece held by C-clamps through holes in the board between the 90.degree. slot in the backup and a selected angle mark so that the workpiece side forms a desired angle with the saw line. The bottom surface of the board has a reference line and bottom angle marks. A workpiece side is aligned with the reference line, and an edge of the swing assembly is aligned with the selected bottom angle mark so that the saw line is at a desired angle to the reference line and workpiece.
REFERENCES:
patent: 102487 (1870-05-01), Canfield
patent: 979039 (1910-12-01), Shawver
patent: 1463564 (1923-07-01), Taylor
patent: 2595322 (1952-05-01), Avery
patent: 2770265 (1956-11-01), Pollock
patent: 2803271 (1957-08-01), Shaw
patent: 2804104 (1957-08-01), Sasso
patent: 3901498 (1975-08-01), Novak
patent: 4292870 (1981-10-01), Mericle
patent: 4320678 (1982-03-01), Volk
Coffee Wendell
Smith Montgomery W.
Yost Frank T.
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