Apparatus for breaking brittle rods or fibers

Details Apparatus for breaking brittle rods or fibers Apparatus for breaking brittle rods or fibers

1975-10-24

1977-06-07

Gilden, Leon

Severing by tearing or breaking

Breaking or tearing apparatus

Movable breaking tool

81 51R, 81420, 225106, B26F 300

Patent

active

040278140

ABSTRACT:
Particular apparatuses implement 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. A decreasing tensile stress is achieved 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, by simultaneously applying longitudinal tension to the rod and bending it in a tool that laterally moves a section of the fiber while holding sections to either side in friction-type clamps. A convenient hand tool for breaking optical fibers uses pivoting clamps which serve to increase tensile stress as bending is increased. Scoring is done before or after the above-mentioned tool operations.

REFERENCES:
patent: 188262 (1877-03-01), Russell
patent: 475261 (1892-05-01), Winton
patent: 1309354 (1919-07-01), Dallmeyer et al.
patent: 2212599 (1940-08-01), Hall
patent: 2779382 (1957-01-01), Anello

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