GB2177788A - Electric lighting devices having flexible supports - Google Patents

Electric lighting devices having flexible supports Download PDF

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Publication number
GB2177788A
GB2177788A GB08518349A GB8518349A GB2177788A GB 2177788 A GB2177788 A GB 2177788A GB 08518349 A GB08518349 A GB 08518349A GB 8518349 A GB8518349 A GB 8518349A GB 2177788 A GB2177788 A GB 2177788A
Authority
GB
United Kingdom
Prior art keywords
sheath
lamp holder
connector
electric lighting
lamp
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Withdrawn
Application number
GB08518349A
Other versions
GB8518349D0 (en
Inventor
Michael Alan Roy Atkins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB08518349A priority Critical patent/GB2177788A/en
Publication of GB8518349D0 publication Critical patent/GB8518349D0/en
Publication of GB2177788A publication Critical patent/GB2177788A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/32—Flexible tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/06—Bases for movable standing lamps; Fixing standards to the bases

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)

Abstract

An electric lighting device consists of a copper sheath cable containing conductor wires and supporting a lamp fitting at one end, the tube being capable of being bent into various shapes. <IMAGE>

Description

SPECIFICATION Electric lighting devices This invention relates to electric lighting devices.
According to the invention the device comprises a seamless copper sheath containing insulated conductor wires, an electric lamp holder and a connector between the sheath and the lamp holder.
The sheath with its wires may be a mineral ("MICC") cable manufactured by BICC Limited and sold under the Trade Mark "Pyrotenax" and consisting of copper conductors embedded in a densely compacted mineral insulant and contained in a seamless copper sheath which can be bent into various shapes without detriment to its electrical properties and mechanical strength. It is also completely non-flammable and impervious to heat and fire.
The sheath has sufficient rigidity to support the lamp socket and lamp and a lamp shade without additional support although the sheath may be for example 25 to 75 cms in length and 8 to 12 mm (e.g. 10 mm) outside diameter.
The sheath may be twisted or knotted into circular or other shapes between its ends.
The sheath may be coated with metal, paint or plastics sheath, e.g. electroplated.
The connector will be small enough at one end for connection to the sheath and large enough at its other end for connection to the lamp holder. The connector is preferably a spun copper shell having a length of constant diameter at its small end, the remainder being tapered with its large end secured to the lamp holder. It may be soldered at its small end to the sheath and soldered at its large end to the holder.
The lamp holder may be a conventional type of holder e.g. small bayonet cap, standard bayonet cap, small Edison screw or standard Edison screw.
After electrical connections are made the connector may be filled with insulating material e.g. "Ciba Geigy" Epoxy Resin type CY1301 with catalyst type Hy 1300.
The connection of the sheath, at its end opposite to the lamp holder, may be by a screw-on pot seal.
The invention may be applied to a table lamp or may be applied to wall, ceiling and pendant mounted devices.
The invention will be further described by way of example with reference to the accompanying diagrammatic drawings wherein: Figure 1 is an "exploded" view of a device made in accordance with the invention; Figure 2 is an assembled view thereof; Figure 3 and 4 show attachment to a base; and Figure 5 shows one possible configuration of the sheath.
A seamless copper sheath 10 contains two copper conductor wires 11 insulated by a mineral insulating material in the sheath.
A spn copper connector shell 13 has one part of constant diameter forming a small end and the other part tapering to provide a large end.
Flexible conductors 15 are attached to the wires 11 by solder 16. The conductors 15 are covered by heat resisting insulating sleeves 17.
A standard brass lamp holder 18 includes a nut 20 and tubular copper shroud 21.
The small end of the connector 13 is soldered to the sheath 10 at 24. The large end is soldered to the nut 20 at 25 and the nut 20 is soldered to the shroud 21 at 26.
A base 28 may be made of wood, metal, ceramic or plastics. The wires 11 are connected to a three core flexible lead 30 which will be connected at its other end to a normal three pin plug.
The connection is effected by a "MICC" screw-on crimp seal 31 and compression type electrical connectors 32.
The base may be filled with sand and cement or other filler 33 for stability and fire proofing.
The earth wire is soldered at 34.
Fig. 5 shows a table lamp in which the sheath 10 is bent into two circular shapes.
The sheath 10 is self supporting so that no other supporting standard is required.
1. An electric lighting device comprising a seamless copper sheath containing insulated conductor wires which sheath can be bent into various shapes, an electric lamp holder at one end of the sheath and a connector between the sheath and the lamp holder, said connector being smaller at one end than the other, the small end being attached to the correspondingly small diameter sheath and the large end being of a size suitable for connection to the lamp holder the sheath with its contents having sufficient rigidity to support the lamp holder and a lamp without additional support.
2. An electric lighting device according to claim 1 wherein the sheath contains the conductor embedded in a compacted mineral insulant.
3. An electric lighting device as claimed in claim 1 or 2 wherein the connectors is a spun copper shell having a length of constant of diameter at its small end where it is soldered to the sheath.
4. An electric lighting device as claimed in claim 1, 2 or 3 wherein the connector is filled with a resinous insulating material.
5. An electric lighting device as claimed in any of the preceding claims wherein the end of the sheath opposite to the lamp holder
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (7)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Electric lighting devices This invention relates to electric lighting devices. According to the invention the device comprises a seamless copper sheath containing insulated conductor wires, an electric lamp holder and a connector between the sheath and the lamp holder. The sheath with its wires may be a mineral ("MICC") cable manufactured by BICC Limited and sold under the Trade Mark "Pyrotenax" and consisting of copper conductors embedded in a densely compacted mineral insulant and contained in a seamless copper sheath which can be bent into various shapes without detriment to its electrical properties and mechanical strength. It is also completely non-flammable and impervious to heat and fire. The sheath has sufficient rigidity to support the lamp socket and lamp and a lamp shade without additional support although the sheath may be for example 25 to 75 cms in length and 8 to 12 mm (e.g. 10 mm) outside diameter. The sheath may be twisted or knotted into circular or other shapes between its ends. The sheath may be coated with metal, paint or plastics sheath, e.g. electroplated. The connector will be small enough at one end for connection to the sheath and large enough at its other end for connection to the lamp holder. The connector is preferably a spun copper shell having a length of constant diameter at its small end, the remainder being tapered with its large end secured to the lamp holder. It may be soldered at its small end to the sheath and soldered at its large end to the holder. The lamp holder may be a conventional type of holder e.g. small bayonet cap, standard bayonet cap, small Edison screw or standard Edison screw. After electrical connections are made the connector may be filled with insulating material e.g. "Ciba Geigy" Epoxy Resin type CY1301 with catalyst type Hy 1300. The connection of the sheath, at its end opposite to the lamp holder, may be by a screw-on pot seal. The invention may be applied to a table lamp or may be applied to wall, ceiling and pendant mounted devices. The invention will be further described by way of example with reference to the accompanying diagrammatic drawings wherein: Figure 1 is an "exploded" view of a device made in accordance with the invention; Figure 2 is an assembled view thereof; Figure 3 and 4 show attachment to a base; and Figure 5 shows one possible configuration of the sheath. A seamless copper sheath 10 contains two copper conductor wires 11 insulated by a mineral insulating material in the sheath. A spn copper connector shell 13 has one part of constant diameter forming a small end and the other part tapering to provide a large end. Flexible conductors 15 are attached to the wires 11 by solder 16. The conductors 15 are covered by heat resisting insulating sleeves 17. A standard brass lamp holder 18 includes a nut 20 and tubular copper shroud 21. The small end of the connector 13 is soldered to the sheath 10 at 24. The large end is soldered to the nut 20 at 25 and the nut 20 is soldered to the shroud 21 at 26. A base 28 may be made of wood, metal, ceramic or plastics. The wires 11 are connected to a three core flexible lead 30 which will be connected at its other end to a normal three pin plug. The connection is effected by a "MICC" screw-on crimp seal 31 and compression type electrical connectors 32. The base may be filled with sand and cement or other filler 33 for stability and fire proofing. The earth wire is soldered at 34. Fig. 5 shows a table lamp in which the sheath 10 is bent into two circular shapes. The sheath 10 is self supporting so that no other supporting standard is required. CLAIMS
1. An electric lighting device comprising a seamless copper sheath containing insulated conductor wires which sheath can be bent into various shapes, an electric lamp holder at one end of the sheath and a connector between the sheath and the lamp holder, said connector being smaller at one end than the other, the small end being attached to the correspondingly small diameter sheath and the large end being of a size suitable for connection to the lamp holder the sheath with its contents having sufficient rigidity to support the lamp holder and a lamp without additional support.
2. An electric lighting device according to claim 1 wherein the sheath contains the conductor embedded in a compacted mineral insulant.
3. An electric lighting device as claimed in claim 1 or 2 wherein the connectors is a spun copper shell having a length of constant of diameter at its small end where it is soldered to the sheath.
4. An electric lighting device as claimed in claim 1, 2 or 3 wherein the connector is filled with a resinous insulating material.
5. An electric lighting device as claimed in any of the preceding claims wherein the end of the sheath opposite to the lamp holder having a base through which the sheath protrudes and which contains a screw-on crimp seal which connects the conductors to an electrical cable.
6. An electric lighting device as claimed in claim 5 wherein the base is filled with a fire proofing filler.
7. An electric lighting device substantially as described herein with reference to any one of the examples shown in the accompanying drawings.
GB08518349A 1985-07-20 1985-07-20 Electric lighting devices having flexible supports Withdrawn GB2177788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08518349A GB2177788A (en) 1985-07-20 1985-07-20 Electric lighting devices having flexible supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08518349A GB2177788A (en) 1985-07-20 1985-07-20 Electric lighting devices having flexible supports

Publications (2)

Publication Number Publication Date
GB8518349D0 GB8518349D0 (en) 1985-08-29
GB2177788A true GB2177788A (en) 1987-01-28

Family

ID=10582582

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08518349A Withdrawn GB2177788A (en) 1985-07-20 1985-07-20 Electric lighting devices having flexible supports

Country Status (1)

Country Link
GB (1) GB2177788A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4889303A (en) * 1988-06-24 1989-12-26 Wolf Mitchell E Flexible arm retainer device
US5010803A (en) * 1988-11-08 1991-04-30 Donnell Kenneth D Microphone mount
DE9213441U1 (en) * 1992-10-06 1993-02-11 Blumensaat, Jürgen von der, Dipl.-Ing., 2000 Hamburg Holder for lamp body

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB318370A (en) * 1928-08-16 1929-09-05 Harry Akroyd Improvements in or relating to portable stands for electric lamps
US4238816A (en) * 1977-08-18 1980-12-09 Mario Merlo Lamp for the maintenance, servicing and repairing of motorvehicles
GB2113818A (en) * 1981-12-30 1983-08-10 Anthony Roland Grice Flexible arm light fittings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB318370A (en) * 1928-08-16 1929-09-05 Harry Akroyd Improvements in or relating to portable stands for electric lamps
US4238816A (en) * 1977-08-18 1980-12-09 Mario Merlo Lamp for the maintenance, servicing and repairing of motorvehicles
GB2113818A (en) * 1981-12-30 1983-08-10 Anthony Roland Grice Flexible arm light fittings

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4889303A (en) * 1988-06-24 1989-12-26 Wolf Mitchell E Flexible arm retainer device
US5010803A (en) * 1988-11-08 1991-04-30 Donnell Kenneth D Microphone mount
DE9213441U1 (en) * 1992-10-06 1993-02-11 Blumensaat, Jürgen von der, Dipl.-Ing., 2000 Hamburg Holder for lamp body

Also Published As

Publication number Publication date
GB8518349D0 (en) 1985-08-29

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)