Apparatus for and method of initiating a damage-free score

Details Apparatus for and method of initiating a damage-free score Apparatus for and method of initiating a damage-free score

1981-10-02

1984-01-24

Yost, Frank T.

Severing by tearing or breaking

Methods

With preliminary weakening

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

Patent

active

044271433

ABSTRACT:
Damage-free scores are initiated by engaging a scoring wheel to the surface of a refractory piece with the plane of rotation of the scoring wheel forming an oblique angle to the desired path of damage-free scoring. An aligning force generated by the interaction of the scoring wheel and the refractory piece during relative movement along the desired scoring path pivots the scoring wheel into alignment with the desired path of scoring, which pivoting creates a zone of surface damage which serves to initiate a damage-free score. Facilities are provided to urge the scoring wheel out of alignment with the desired path of scoring, with a magnitude of force less than the aligning force, such that the scoring wheel automatically returns to a pivotally offset initiating position when it is disengaged from the surface of the refractory piece.

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patent: 4102227 (1978-07-01), Simko
patent: 4137803 (1979-02-01), Goldinger
patent: 4213550 (1980-07-01), Bonaddio

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