Metal tools and implements – making – Saw-making or furbishing device or machine – Sharpening and gumming
Patent
1993-09-28
1995-06-13
Watts, Douglas D.
Metal tools and implements, making
Saw-making or furbishing device or machine
Sharpening and gumming
76 31, B23D 6310
Patent
active
054232341
ABSTRACT:
A guide which can be mounted to the teeth of a saw blade, for guiding a file used to sharpen the blade's teeth. The file guide comprises two spaced-apart, substantially parallel arms adapted to receive a saw blade therebetween. Each of the substantially parallel arms has a main arm portion and a secondary arm portion connected to one another by a preferably pivoted elbow portion. The file guide further comprises a guide member adapted to straddle the saw blade, and a tooth engaging member connected to, and disposed between, the secondary arm portions. The substantially parallel arms, guide member and tooth engaging member are arranged with respect to one another, such that the guide firmly engages a saw blade when the tooth engaging member and the guide member are brought against the teeth of the saw blade, with the saw blade being received between the substantially parallel arms. Preferably, rollers are mounted on the guide member, which rollers guide a file inserted therebetween. In addition, the file guide preferably also comprises mechanisms for adjusting the filing angle and depth, as well as the angular orientation of the main arm portions with respect to the secondary arm portions to compensate for the tooth spacing of different saw blades.
REFERENCES:
patent: 735100 (1903-08-01), Hormby
patent: 827623 (1906-07-01), Finger
patent: 1806222 (1931-05-01), Ross
patent: 2755559 (1956-07-01), Pearce
patent: 2813438 (1957-11-01), Paradis
patent: 3766807 (1973-10-01), Combs
patent: 4228702 (1980-10-01), Stewart et al.
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