GB2144070A - Optical fibre cable preparation tool - Google Patents
Optical fibre cable preparation tool Download PDFInfo
- Publication number
- GB2144070A GB2144070A GB08317557A GB8317557A GB2144070A GB 2144070 A GB2144070 A GB 2144070A GB 08317557 A GB08317557 A GB 08317557A GB 8317557 A GB8317557 A GB 8317557A GB 2144070 A GB2144070 A GB 2144070A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cutter
- cable
- tool
- sheath
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B27/00—Hand cutting tools not provided for in the preceding groups, e.g. finger rings for cutting string, devices for cutting by means of wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D21/00—Machines or devices for shearing or cutting tubes
- B23D21/06—Hand-operated tube-cutters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/245—Removing protective coverings of light guides before coupling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
Abstract
A positioning barrel C rotatably supports a cutter A which, when the whole tool is passed onto a fibre optic cable for preparation purposes, is closed onto the protective cable sheath when an adjusting screw E is rotated. The screw E is rotated until resistance is felt, the cutter is then rotated by a key D causing the sheath to be cut evenly, the screw is retightened followed by further rotation of the cutter. Tightening of the screw and rotation of the cutter is continued until the sheath is almost fully parted which coincides with the cutter being in the fully closed position. The parted and unwanted section of the sheath may then be eased away from the cable assembly and withdrawn by careful manipulation of the whole tool. <IMAGE>
Description
SPECIFICATION
Optical fibre cable preparation tool
Figure (1) shows a full size cross section through the assembly.
The purpose of the tool is to allow the careful removal of the tubular protection sheath from around the optical fibre core of telecommunication cable.
Cutter (A), connecting shaft (B) and rotation key (D), form one effective cutter assembly which freely rotates in positioning barrel (C).
For operation, the whole assembly is pushed over the exposed cable protection sheath and down to the strip back position under the wire braiding. The cutter adjusting screw (E) is rotated clockwise until resistance is felt-indicating cutter penetration. The cutter assembly is then rotated to facilitate even cutting. The adjustable screw is retightened followed by further rotation of the cutter assembly.
The above process of tightening and cutting is continued until the protection sheath is almost fully parted at the cutting point. This position coincides with the cutter attaining its fully closed state, thus preventing over penetration (see Fig. 2).
Slight bending movements accompanying tool withdrawal facilitate parting of the sheath with the spent portion being discarded through the hollow shaft (B).
Items B, C, D, and E are manufactured from (so 970 PT. 1 1972080 M 40).
The cutter item A is manufactured from (BS 4659 BD3 KE. 970) tool steel hardened and tempered to 55/60 Rockwell C.
1. A multipart, hollow-section hand tool with rotating cutter for the purpose of removing the layer or layers of protective sheathing from fibre optic telecommunication cable as part of the process of making connection with a connection device for the purpose of rendering the cable operational.
2. A handtool according to claim 1, in which the depth of annular cut into the protective sheathing may be controlled by the dimensions of the radially fully compressed tool steel cutter. These dimensions are predetermined by jig controlled precision machining of the cutter.
3. A handtool according to claim 1, in which the depth of annular cut into the protective sheathing may be controlled by means of two adjustable locknuts which are fitted to cutter adjusting screw E as indicated in drawing Fig. 1. The locknuts predetermine the length of travel of the cutter adjusting screw which in turn fixes the maximum radial compression of the precision machined tool steel cutter.
4. A handtool according to claim 1, and claims 2 or 3 in which the piece of spent sheathing is held captive by the tool after cutting thus permitting recovery of the same piece of spent sheathing by means of a steady pull on the complete handtool which in turn exposes the optical fibre component of the cable assembly ready for further connection processing.
5. A handtool substantially as described in which support bushes may be inserted into connecting shaft B directly behind the cutter
A for the purpose of supporting cable assemblies of differing diameters to afford a high level of accuracy to the depth of cut described in previous claims.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (5)
1. A multipart, hollow-section hand tool with rotating cutter for the purpose of removing the layer or layers of protective sheathing from fibre optic telecommunication cable as part of the process of making connection with a connection device for the purpose of rendering the cable operational.
2. A handtool according to claim 1, in which the depth of annular cut into the protective sheathing may be controlled by the dimensions of the radially fully compressed tool steel cutter. These dimensions are predetermined by jig controlled precision machining of the cutter.
3. A handtool according to claim 1, in which the depth of annular cut into the protective sheathing may be controlled by means of two adjustable locknuts which are fitted to cutter adjusting screw E as indicated in drawing Fig. 1. The locknuts predetermine the length of travel of the cutter adjusting screw which in turn fixes the maximum radial compression of the precision machined tool steel cutter.
4. A handtool according to claim 1, and claims 2 or 3 in which the piece of spent sheathing is held captive by the tool after cutting thus permitting recovery of the same piece of spent sheathing by means of a steady pull on the complete handtool which in turn exposes the optical fibre component of the cable assembly ready for further connection processing.
5. A handtool substantially as described in which support bushes may be inserted into connecting shaft B directly behind the cutter
A for the purpose of supporting cable assemblies of differing diameters to afford a high level of accuracy to the depth of cut described in previous claims.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08317557A GB2144070A (en) | 1983-06-28 | 1983-06-28 | Optical fibre cable preparation tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08317557A GB2144070A (en) | 1983-06-28 | 1983-06-28 | Optical fibre cable preparation tool |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8317557D0 GB8317557D0 (en) | 1983-08-03 |
GB2144070A true GB2144070A (en) | 1985-02-27 |
Family
ID=10544935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08317557A Withdrawn GB2144070A (en) | 1983-06-28 | 1983-06-28 | Optical fibre cable preparation tool |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2144070A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0256710A2 (en) * | 1986-08-04 | 1988-02-24 | Amphenol Corporation | Fiber optic cable preparation tool and method of preparing fiber optic cable for termination with a fiber optic connector |
EP0279145A1 (en) * | 1987-02-11 | 1988-08-24 | HILTI Aktiengesellschaft | Scissors for cutting tubular webbings |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1146168A (en) * | 1966-11-21 | 1969-03-19 | John King | An improved wire-stripping tool |
GB1238342A (en) * | 1968-03-27 | 1971-07-07 | ||
US4059893A (en) * | 1976-07-19 | 1977-11-29 | Solury Thomas F | Coaxial cable cutting tool |
GB1551842A (en) * | 1977-10-31 | 1979-09-05 | Gen Electric Co Ltd | Cable stripping tool |
GB2052177A (en) * | 1979-05-21 | 1981-01-21 | Matra | Process and apparatus for stripping insulated wires |
US4426778A (en) * | 1981-12-14 | 1984-01-24 | Avco Corporation | Device for stripping wire and cable |
-
1983
- 1983-06-28 GB GB08317557A patent/GB2144070A/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1146168A (en) * | 1966-11-21 | 1969-03-19 | John King | An improved wire-stripping tool |
GB1238342A (en) * | 1968-03-27 | 1971-07-07 | ||
US4059893A (en) * | 1976-07-19 | 1977-11-29 | Solury Thomas F | Coaxial cable cutting tool |
GB1551842A (en) * | 1977-10-31 | 1979-09-05 | Gen Electric Co Ltd | Cable stripping tool |
GB2052177A (en) * | 1979-05-21 | 1981-01-21 | Matra | Process and apparatus for stripping insulated wires |
US4426778A (en) * | 1981-12-14 | 1984-01-24 | Avco Corporation | Device for stripping wire and cable |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0256710A2 (en) * | 1986-08-04 | 1988-02-24 | Amphenol Corporation | Fiber optic cable preparation tool and method of preparing fiber optic cable for termination with a fiber optic connector |
EP0256710A3 (en) * | 1986-08-04 | 1988-07-06 | Amphenol Corporation | Fiber optic cable preparation tool and method of preparing fiber optic cable for termination with a fiber optic connector |
EP0279145A1 (en) * | 1987-02-11 | 1988-08-24 | HILTI Aktiengesellschaft | Scissors for cutting tubular webbings |
CH671918A5 (en) * | 1987-02-11 | 1989-10-13 | Hilti Ag |
Also Published As
Publication number | Publication date |
---|---|
GB8317557D0 (en) | 1983-08-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |