Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1985-05-17
1986-09-02
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51285, B24B 900
Patent
active
046087826
ABSTRACT:
Apparatus for forming a sharpened edge on a razor blade or the like includes structure for passing a blade element on which it is desired to form a sharpened edge along a path, and abrading structure mounted adjacent the path for forming a primary sharpened edge on the blade element. a secondary sharpened edge forming stage includes secondary edge forming apparaus mounted for rotation adjacent the path, the secondary edge forming apparatus having a helical abrading land formed thereon for forming spaced recesses in at least one of the facets that define the primary edge along the length of the sharpened primary edge. The blade element is advanced along the sharpening path and the secondary edge forming apparatus is rotated in synchronism with the advance of the blade element to abrade a series of spaced recesses along the primary sharpened cutting edge, those recesses providing secondary sharpened cutting edge portions spaced at regular intervals along the primary sharpened cutting edge and the primary and secondary sharpened cutting edge portions forming an essentially continuous undulating sharpened cutting edge in a razor blade or the like.
REFERENCES:
patent: 1579577 (1926-04-01), Thompson
patent: 2043998 (1936-06-01), Hadjopoulos
patent: 2697951 (1954-12-01), Muller
patent: 3654701 (1972-04-01), Hastings, Sr.
patent: 3872588 (1975-03-01), Bogaty
patent: 3897629 (1975-08-01), Liedtke
patent: 4094066 (1978-06-01), Daniel, Jr.
patent: 4265055 (1981-05-01), Cartwright et al.
Rachuba Maurina
Schmidt Frederick R.
The Gillette Company
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