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Fiber optic scribe and cleave tool and method
| Details |
Inventors: Margolin, Mark; Margolin, David;
Assignee: East-West Precision, Inc. (Chicago, IL)
Primary Examiner: Yost; Frank T.
Assistant Examiner:
Attorney, Agent or Firm: McCaleb, Lucas & Brugman
A method for breaking or severing a rod of brittle fiber material, such as glass optical fiber, to produce a mirror end surface thereon, normal to its longitudinal axis and free of imperfection, is described wherein a linear section of the fiber, usually stripped of its outer protective coating or cladding, is supported and held at and between spaced zones and sequentially subjected to gradually increasing axial tension while its exterior surface is scored by a rotatable cutter or scoring wheel moving in and along a plane normal to the longitudinal axis of said section to effect its separation or cleavage along said plane. An adjustment system to accommodate different sizes and types of fiber optic materials is provided for regulating the axial tension imposed on said section, the angle of attack and scoring pressure exerted by the cutter wheel, the distance of the plane of severance relative to the mounting zone for an optical fiber connector fitting and the holding or radial gripping force exerted on the fiber. The sequential steps of tensioning and scribing or scoring the fiber also are selectively reversable. A manually actuatable tool for accomplishing the foregoing events is also described wherein the program of holding, tensioning, scoring and cleaving of the fiber is carried out independently of manually applied tool operating force. |
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DETAILED DESCRIPTION The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. Manually operable tool means for scribing and cleaving optic fibers of circular cross section, comprising: a pair of spaced holding means for holding and supporting a linear section of optic fiber therebetween, means for selectively tensioning said fiber section along its longitudinal axis without bending or otherwise disturbing its linear state, and freely rotatably mounted scribing wheel means movable in and along a plane perpendicular to said longitudinal axis and operable to engageably roll over the exterior contour of said section to scribe the same along an arcuate path lying in said plane. 2. The combination of claim 1, and means for selectively programming the operational sequence of said holding, tensioning and scribing means. 3. The combination of claim 2, wherein said programming means comprises cam means operatively responsive to movement of said scribing means toward said fiber section for causing operation of said tensioning means to tension and cleave said section in pre-selected relation to the scribing operation of said scribing means. 4. The combination of claim 1, and means for selectively determining the axial force applied to said fiber by said tensioning means. 5. The combination of claim 1, wherein said spaced holding means include at least one pair of cooperative gripper means adapted to radially grip the exterior of said fiber, and means for adjustably regulating the radial force exerted by said gripper means. 6. The combination of claim 1, wherein said scribing means is mounted for rectilinear reciprocating movement toward and away from said fiber section and for movement in directions generally transverse to its axis of reciprocating movement during the scribing operation. 7. The combination of claim 6, and means for adjusting and regulating the attack angle and scoring pressure at which said scribing means engages and scribes said fiber section
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