Metal tools and implements – making – Saw-making or furbishing device or machine – Sharpening and gumming
Patent
1975-12-29
1977-08-09
Smith, Al Lawrence
Metal tools and implements, making
Saw-making or furbishing device or machine
Sharpening and gumming
76 42, 51100P, 51216H, B23D 6312
Patent
active
040403130
ABSTRACT:
A grinding machine for sharpening circular saw blade teeth. The machine includes an arbor for supporting a circular saw blade at a pre-selected position relative to a grinding disc. The grinding disc is mounted to a parallelogram linkage that has a tracing pin fixed thereto. Movement of the tracing pin over the surface of a sawtooth-shaped template causes corresponding movement of the grinding disc against a selected sawtooth. Also included is a tooth indexing mechanism whereby precise spacing of the circular saw teeth is obtained. This is accomplished by a tooth spacing pattern mounted to the arbor and by an indexing pawl that facilitates rotation of the arbor in precise increments equal to desired spacing for the teeth of the blade being operated on. The arbor is pivotably mounted relative to the grinding disc to enable bevel grinding of the tooth surfaces.
REFERENCES:
patent: 2129031 (1938-09-01), Ross
patent: 2477135 (1949-07-01), Marker, Jr. et al.
patent: 2517873 (1950-08-01), Harrell
patent: 2610452 (1952-09-01), Hill
patent: 3109327 (1963-11-01), McConnell
patent: 3149591 (1964-09-01), Aiki et al.
patent: 3952616 (1976-04-01), Varley
Smith Al Lawrence
Smith James G.
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