Method of and apparatus for damage-free scoring of refractory ma

Details Method of and apparatus for damage-free scoring of refractory ma Method of and apparatus for damage-free scoring of refractory ma

1981-08-03

1983-12-13

Yost, Frank T.

Severing by tearing or breaking

Methods

With preliminary weakening

83880, 83886, 225 96, C03B 3302, B26D 308, B26F 300

Patent

active

044201060

ABSTRACT:
A damage-free score, e.g., a subsurface score, in a moving refractory piece, e.g., glass, is initiated by imparting vibrations to a damage-free scoring wheel. The damage-free score is increased in depth by the continual impartation of the vibrations during the damage-free scoring of the piece.

REFERENCES:
patent: 3122953 (1964-03-01), Atkeson
patent: 3244337 (1966-04-01), Curtze et al.
patent: 3532260 (1970-10-01), Augustin et al.
patent: 3865293 (1975-02-01), Ernsberger et al.
patent: 3865673 (1975-02-01), DeTorre
patent: 3979243 (1976-09-01), DeTorre
patent: 4027562 (1977-06-01), Bonaddio
patent: 4057184 (1977-11-01), Michalik
patent: 4102227 (1978-07-01), Simko
patent: 4137803 (1979-02-01), Goldinger
patent: 4213550 (1980-07-01), Bonaddio
"Analysis of Brittle Tensile Fracture of Glasses by Ultrasonics", by Frank Kerkhof, Physical Institute of the University of Freiberg, Germany, Apr. 1960.

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