Severing by tearing or breaking – Methods – With preliminary weakening
Patent
1973-11-02
1976-01-27
Meister, J. M.
Severing by tearing or breaking
Methods
With preliminary weakening
225 5, 225 965, B26F 300
Patent
active
039347737
ABSTRACT:
A method of breaking a rod of brittle material, such as a glass optical fiber, so as to yield a mirrorlike surface across the entire rod end is described. This is achieved by establishing a decreasing tensile stress across the cross section of the rod which, at all points, is greater than zero but less than the threshold stress at which a mist zone forms. This is conveniently achieved by simultaneously applying longitudinal tension to the rod and bending it. A convenient hand tool for breaking optical fibers is also described.
REFERENCES:
patent: 1309354 (1919-07-01), Dallmeyer et al.
patent: 1585896 (1926-05-01), Danner
patent: 3138308 (1964-06-01), Oakley
patent: 3718268 (1973-02-01), Insolio
Philosophical Magazine, 14 pp. 731-743, 1966, "On the Shape and Size of the Fracture Zones on Glass Fracture Surfaces" by J. W. Johnson and D. G. Holloway.
Chinnock Edwin Leroy
Gloge Detlef Christoph
Smith Peter William
Bell Telephone Laboratories Incorporated
Meister J. M.
O'Konski Thomas C.
Sherman Sylvan
Wisner Wilford L.
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