US831724A - Method of fixing incandescent lamps. - Google Patents

Method of fixing incandescent lamps. Download PDF

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Publication number
US831724A
US831724A US28774005A US1905287740A US831724A US 831724 A US831724 A US 831724A US 28774005 A US28774005 A US 28774005A US 1905287740 A US1905287740 A US 1905287740A US 831724 A US831724 A US 831724A
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United States
Prior art keywords
fixing
mounting
incandescent lamps
piece
socket
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Expired - Lifetime
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US28774005A
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Josef Levin
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    • 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
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases

Definitions

  • Incandescent lamps were hitherto attached or fixed to the carriers and feed-arms in such a manner that they were screwed to a threaded socket-piece thereof by means of their threaded end or mounting. Now, seeing that the incandescent lamp with its end or mountin is likewise connected with a screw-threa it often happens that when unscrewing the inc andescent lamp the said end or mounting is also unscrewed, which should at all events be prevented, owing to the feed-wires being attached to the latter.
  • the invention consists in the feature that after the end or mounting a of the lamp is screwed onto the threaded socket-piece b a counter-nut ais screwed onto the same socket-piece in such a manner that the latter forms a sort of abutment, preventing the unscrewing of the end or mounting.
  • the lamp proper, cl can, owing to the above arrangement, at all times be unscrewed without any danger of the end or mounting c becoming detached.
  • the attachment and securing of the lamp is in every case and under all circumstances extremely simple, easy, and convenient, since the nut a can 'without any trouble be screwed from below onto the socket-piece and the bowl, shade, cap, or cup 6 or the like does not in any Way hinder the attachment; but the nut a at the same time afl'ords greater security from short-circuits, which were apt to occur frequently, owing to the baring of the wires, whlch rested against metallic parts and had friction with them as the end or mounting of the lamp was turned.
  • the nut a may be made of insulating material.
  • a socket-piece having its lower portion threaded, said soclret-piece being provided with a shoulder, a n'lounting threaded on the socket-piece and adapted to act in conjunction with the shoulder thereof,

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Connecting Device With Holders (AREA)

Description

6 AU 9 1 5 2 T P E S D L T N E ml A P v No. 831,724.
J.LEVI N. METHOD OF FIXING INGANDESGENT LAMPS.
APPLICATION FILED NOV.16,1905.
TYNTTE STATES ATENT GFFIQIEQ JOSEF LEVIN, OF MUNICH, GERMANY.
Specification of Letters Patent.
Patented Sept. 25, 1906.
Application filed November 16,1906. Serial No. 287,740-
To all whom it may concern:
Be it known that I, JOSEF LEVIN, a subject of the King of Bavaria, and a resident of Munich, Bavaria, Germany, have invented certain new and useful Improvements in Methods of Fixing Incandescent Lamps, of which the following is a specification.
Incandescent lamps were hitherto attached or fixed to the carriers and feed-arms in such a manner that they were screwed to a threaded socket-piece thereof by means of their threaded end or mounting. Now, seeing that the incandescent lamp with its end or mountin is likewise connected with a screw-threa it often happens that when unscrewing the inc andescent lamp the said end or mounting is also unscrewed, which should at all events be prevented, owing to the feed-wires being attached to the latter. It was found possible in some cases to avoid that contingency by laterally inserting a ferrule-screw into the thread connection, but not in those cases in which the incandescent lamp was covered or provided with a bowl, shade, cap, or cup, it being impossible in such cases to make use of such screw, owing to the inaccessibility of the respective part of the end or mounting.
The above disadvantage iseffectively 0bviated by the present invention.
This invention is illustrated in the accompanying drawing, showing a longitudinal section of an incandescent lamp with the new method of fixing.
Referring to the drawing, the invention consists in the feature that after the end or mounting a of the lamp is screwed onto the threaded socket-piece b a counter-nut ais screwed onto the same socket-piece in such a manner that the latter forms a sort of abutment, preventing the unscrewing of the end or mounting.
The lamp proper, cl, can, owing to the above arrangement, at all times be unscrewed without any danger of the end or mounting c becoming detached. At the same time the attachment and securing of the lamp is in every case and under all circumstances extremely simple, easy, and convenient, since the nut a can 'without any trouble be screwed from below onto the socket-piece and the bowl, shade, cap, or cup 6 or the like does not in any Way hinder the attachment; but the nut a at the same time afl'ords greater security from short-circuits, which were apt to occur frequently, owing to the baring of the wires, whlch rested against metallic parts and had friction with them as the end or mounting of the lamp was turned. The nut a may be made of insulating material.
tindicat'es the feed-channel for the "wires.
Having now fully described my said invention, what I claim, and desire to secure by Letters Patent, is
In combination, a socket-piecehaving its lower portion threaded, said soclret-piece being provided with a shoulder, a n'lounting threaded on the socket-piece and adapted to act in conjunction with the shoulder thereof,
to provide a securing means, said socketpiece extending below the mounting, and a nut engaging the socket-piece beneath the mounting for holding the mounting against displacement from the socket-piece and a bulb secured to the mounting.
In testimony whereof I have hereunto set my hand in presence of two witnesses.
JOSEF LEVIN.
Witnesses:
ULYssEs J. BYWATER, GEoRo KoRNEa.
US28774005A 1905-11-16 1905-11-16 Method of fixing incandescent lamps. Expired - Lifetime US831724A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US28774005A US831724A (en) 1905-11-16 1905-11-16 Method of fixing incandescent lamps.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28774005A US831724A (en) 1905-11-16 1905-11-16 Method of fixing incandescent lamps.

Publications (1)

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US831724A true US831724A (en) 1906-09-25

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US28774005A Expired - Lifetime US831724A (en) 1905-11-16 1905-11-16 Method of fixing incandescent lamps.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080031310A1 (en) * 1998-08-10 2008-02-07 Kamilo Feher Cross-Correlated TDMA, Spread Spectrum, CDMA and OFDM systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080031310A1 (en) * 1998-08-10 2008-02-07 Kamilo Feher Cross-Correlated TDMA, Spread Spectrum, CDMA and OFDM systems

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