US995238A - Incandescent-lamp socket. - Google Patents

Incandescent-lamp socket. Download PDF

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Publication number
US995238A
US995238A US59986410A US1910599864A US995238A US 995238 A US995238 A US 995238A US 59986410 A US59986410 A US 59986410A US 1910599864 A US1910599864 A US 1910599864A US 995238 A US995238 A US 995238A
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United States
Prior art keywords
conductors
incandescent
lampholder
cord
lamp socket
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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.)
Expired - Lifetime
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US59986410A
Inventor
Herbert Edward Evans
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Individual
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Priority to US59986410A priority Critical patent/US995238A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5804—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part
    • H01R13/5808—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part formed by a metallic element crimped around the cable

Definitions

  • This invention relates to that class of connectors for electric conductors which are embodied in the form of incandescent lamp sockets, wall plugs, ceiling roses and like articles to which lieXible conductors are connected.
  • the objects of this invention are:-1st, to minimize the risk of 4fire arising from the short-circuiting of the flexible conductors either immediately above or within the lampholder, ceiling rose, or top wall plug as is frequently the case now; Qndly, to minimize the risk of the flexible conductors breaking at the same moment and dropping shade, lampholder, and lamp as often happens when the conductors pass through a single grip.
  • Those inventions which have sought to accomplish the first of these objects have simply provided lampholders with a single grip with two openings for the conducting wires, or two separate entrances without any provision for gripping the wires, leaving the strain on the terminals or knots tied in flexible cord in the interior of the lampholder.
  • This invention comprises a cord terminal connector for electric conductors constructed with individual separate passages for each conductor and provided with separate individual grips therefor, whereby both re danger from short-circuiting and damage from cord breakage are avoided.
  • Figure 1 is a perspective view of an in- Speccation of Letters Patent.
  • Fig. 2 a sectional view
  • Fig. 3 a plan view of the same fitting
  • Fig. 4 shows the inventionapplied to a wall plug or ceiling rose
  • Fig. 5 shows the invention applied to an ordinary switch lampholder.
  • the lampholder 1 is provided with separate and independent cord grips 2 and 3 for the flexible conductors 4 and 5 respectively entering said lampholder, ceiling rose, wall plug or the like.
  • wood can still be used in each grip but the quantity so used is reduced to a minimum.
  • a -cord terminal electric connector constructed with separate individual insulating grips for the respective positive and negative cord conductors.

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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

H. E. EVANS. j'
INCANDESGENT LAMP SOCKET. APPLIOATION FILED 111:0 29. 1910.
995,238..3 Patented June 13, 1911.
il' la@ HERBERT EDWARD EVANS, OF LONDON, ENGLAND.
INCANDESGENT-LAIVIP SOCKET.
To all whom it may concern:
Be it known that I, HERBERT Enwann EVANS, a subject of the King of Great Britain, residing at 63 Bishopsgate street TW ithin, London, E. C., England, have invented a certain new and useful Improvement in Incandescent-Lamp Sockets, of which the following is a specification.
This invention relates to that class of connectors for electric conductors which are embodied in the form of incandescent lamp sockets, wall plugs, ceiling roses and like articles to which lieXible conductors are connected.
The objects of this invention are:-1st, to minimize the risk of 4fire arising from the short-circuiting of the flexible conductors either immediately above or within the lampholder, ceiling rose, or top wall plug as is frequently the case now; Qndly, to minimize the risk of the flexible conductors breaking at the same moment and dropping shade, lampholder, and lamp as often happens when the conductors pass through a single grip. Those inventions which have sought to accomplish the first of these objects have simply provided lampholders with a single grip with two openings for the conducting wires, or two separate entrances without any provision for gripping the wires, leaving the strain on the terminals or knots tied in flexible cord in the interior of the lampholder. In order to get the amount of separation desirable between the two wires when using only a single cord grip, it would be necessary for this grip to be very large, and as the grips are usually made of wood the danger of the shortcircuiting of the conductors would be greatly increased if the lampholder be placed in a' damp place.
This invention comprises a cord terminal connector for electric conductors constructed with individual separate passages for each conductor and provided with separate individual grips therefor, whereby both re danger from short-circuiting and damage from cord breakage are avoided.
Figure 1 is a perspective view of an in- Speccation of Letters Patent.
Application led December 29, 1910.
Patented June 13, 1911.
Serial No. 599,864.
candescent lampholder showing the invention applied thereto. Fig. 2 a sectional view, and Fig. 3 a plan view of the same fitting. Fig. 4 shows the inventionapplied to a wall plug or ceiling rose, and Fig. 5 shows the invention applied to an ordinary switch lampholder.
The same reference numerals refer to the same parts in all the figures.
According to my invention the lampholder 1 is provided with separate and independent cord grips 2 and 3 for the flexible conductors 4 and 5 respectively entering said lampholder, ceiling rose, wall plug or the like. By this means wood can still be used in each grip but the quantity so used is reduced to a minimum. The fact of each conductor4 or 5 having its own sepa-- ra'te grip 2 or 3 isolates each conductor from the other and prevents any electrical connection at the top or bottom outlets of the cord grips. It also enables each of the conductors 4 and 5 to be taken into the porcelain holder 1 in a straight and direct line.
Vith regard to the second object of my invention the providing of separate cord grips 2 and 3 for each conductor 4 or 5 renders it almost impossible for both or all of the conductors to break at the same time as the strain on each conductor would be suliciently different to reduce this risk to a minimum. The greater the amount of separation of the wires the less chance of each breaking at the same time. Should one conductor break the lampholder or the like would remain suspended by the other or others.
Vhat I claim as my invention, and desire to secure by Letters Patent, is-
A -cord terminal electric connector constructed with separate individual insulating grips for the respective positive and negative cord conductors.
HERBERT EDWARD EVANS.
Witnesses:
WILLIAM J As. FERRY, RIPLEY WILSON.
opies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,
. Washington, ID. C.
US59986410A 1910-12-29 1910-12-29 Incandescent-lamp socket. Expired - Lifetime US995238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US59986410A US995238A (en) 1910-12-29 1910-12-29 Incandescent-lamp socket.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59986410A US995238A (en) 1910-12-29 1910-12-29 Incandescent-lamp socket.

Publications (1)

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US995238A true US995238A (en) 1911-06-13

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Application Number Title Priority Date Filing Date
US59986410A Expired - Lifetime US995238A (en) 1910-12-29 1910-12-29 Incandescent-lamp socket.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100052309A1 (en) * 2008-08-26 2010-03-04 Oceaneering International, Inc. Umbilical Bullet Connector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100052309A1 (en) * 2008-08-26 2010-03-04 Oceaneering International, Inc. Umbilical Bullet Connector
US7906727B2 (en) * 2008-08-26 2011-03-15 Oceaneering International, Inc. Umbilical bullet connector

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