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US3609643A - Decorative midget light string - Google Patents

Decorative midget light string Download PDF

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Publication number
US3609643A
US3609643A US3609643DA US3609643A US 3609643 A US3609643 A US 3609643A US 3609643D A US3609643D A US 3609643DA US 3609643 A US3609643 A US 3609643A
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Prior art keywords
socket
elements
cord
power
body
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Expired - Lifetime
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Maxwell H Connan
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MAXWELL H CONNAN
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MAXWELL H CONNAN
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00-H01R33/00
    • H01R13/40Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42Securing in a demountable manner
    • H01R13/422Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF
    • F21S4/00Lighting devices or systems using a string or strip of light sources
    • F21S4/10Lighting devices or systems using a string or strip of light sources with light sources attached to loose electric cables, e.g. Christmas tree lights
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/002Supporting, suspending, or attaching arrangements for lighting devices; Hand grips making direct electrical contact, e.g. by piercing

Abstract

A string of decorative miniature light bulbs arranged in a series connection, and predeterminately spaced along a piece of standard parallel insulated electric conductor wire, in which the bulb sockets clamp upon the wire, make solderless connection therewith, and disengageably receive the bulbs; and methods for fabricating the same.

Description

United States Patent lnventor Maxwell 11. Connan 53 Roosevelt Ave., Glen Head, NY. 11545 14,108

Feb. 25, 1970 Sept. 28, 1971 Contlnuatlon-ln-part of application Ser. No. 736,668, June-13, 1968, now abandoned.

Appl. No. Filed Patented DECORATIVE MIDGET LIGHT STRING 2 Claims, 10 Drawing Figs.

US. Cl 339/97 L, 339/157 C Int. Cl H01r 7/04 Field of Search 339/95,

[56] References Cited UNITED STATES PATENTS 1,818,884 8/1931 Eckstein 339/97 L 2,360,444 10/1944 Pollock 339/99 L 2,466,566 4/1949 Tiscione 339/99 L 2,570,751 10/1951 Benander 339/99 L 2,726,293 12/1955 Bramming 339/97 L I FOREIGN PATENTS 670,178 3/1966 Belgium 339/97 L Primary Examiner-James A. Leppink Assistant Examiner-Joseph H. McGlynn Attorney-Charles E Temko ABSTRACT: A string of decorative miniature light bulbs arranged in a series connection, and predeterminately spaced along a piece of standard parallel insulated electric conductor wire, in which the bulb sockets clamp upon the wire, make solderless connection therewith, and disengageably receive the bulbs; and methods for fabricating the same.

PATENTED SEPZB I97! SHEET 2 [IF 2 DECORATIVE MIDGET LIGHT STRING This application is a continuation-in-part of my application Ser. No. 736,668 filed June 13, 1968, and now abandoned.

This invention relates generally to strings of electric lights and more particularly to a new and useful decorative midget light string construction and method of making same.

It is known in this art to have a string of lights in the form of small incandescent bulbs which are connected to sockets by pushing the bulb into a receptacle in the socket. The connections to the socket are made by hand by soldering or crimping cut wire ends of twisted electrical cord to contact members and hand assembling the same into the socket. This construction and method is time consuming and costly.

It is among the objects of the present invention to improve the prior art constructions and methods and to provide structure and methods of the class described which are lower in cost of manufacture and assembly, more durable, neater and trimmer in appearance, and which provide for enhanced decorative appearance. 7

These objects and other incidental ends and advantages will more fully appear in the progress of this invention and be pointed out in the appended claims.

In the drawing, in which similar reference characters designate corresponding parts throughout the several views:

FIG. 1 is an exploded, fragmentary perspective view showing an embodiment of the invention.

FIG. 2 is an enlarged elevational view of a second socket body element as seen from the plane 2-2 in FIG. 1.

FIG. 3 is an enlarged sectional view, partly in elevation, as seen from the plane 3--3 in FIG. 1, with a bulb inserted.

FIG. 4 is a sectional view as seen from the plane 4-4 in FIG. 3.

FIG. 5 is an enlarged elevational view of a contact member.

FIG. 6 is an elevational view as seen from the right of FIG. 5.

FIG. 7 is an exploded, fragmentary perspective view of a modification.

FIG. 8 is an enlarged elevational view of a first socket body element as seen from the plane 8-8 in FIG. 7.

FIG. 9 is an enlarged sectional view as seen from the plane 9-9 in FIG. 7.

FIG. 10 is an enlarged sectional view corresponding to that seen in FIG. 9, but showing another modification.

Turning to FIGS. 1 to 6, in accordance with the invention, the construction, generally indicated by reference character 10, comprises broadly: sockets 12, an electrical power cord assembly 14, and electric incandescent light bulbs 16 (only one shown).

An electric light bulb socket 12 includes first and second body elements 18 and 20, first and second contact members 22 and 24, and a sleeve element 26.

The body elements 18 and are substantially identical so that they are completely interchangeable with each other, thereby reducing mold and inventory costs. Each is preferably molded of a fire-resistant synthetic resin of a suitable type, such as thennosetting phenol resin, polyvinyl chloride resin, polypropylene, or the like. The elements 18 and 20 are generally half cup shape including bases 28 and 30; and upstanding semicylindrical walls 32 and 34 with upper edges 33 and 35. The vertical edges 40 and 42 of the walls 32 and 34 have pairs of power-cord-clamping portions 36 and 38, vertical grooves 44 and 46, and vertical setback portions 48 and 50, respectively. The lower portions of body elements 18 and 20, at the outside thereof are of greater diameter, forming shoulders 52 and 54, and thereabove the body elements have horizontal grooves 56 and 58.

The sleeve elements 26 are generally cylindrical in shape, with an internal diameter which is a sliding fit on the upper portions of the exterior surfaces of the walls 32 and 34 when the vertical edges 40 and 42 are in contact. Disposed on the inner surface of each of the sleeve elements is a annular horizontal rib 60 which is by its arrangement and construction adapted to snap into engagement with the grooves 56 and 58.

Thus the sleeve elements 26 retain the body elements 18 and 20 in assembled juxtaposition. The lower edges 62 of the sleeve elements 26 abut the shoulders 52 and 54. The sleeve elements may be in a variety of colors and may have many different decorative edge treatments such as the serations 64. As desired, the sleeve elements 26 may have integral hooks 66 which may serve to support sockets 12 in selected positions, as for example on the twigs of a Christmas tree.

The first and second contact members 22 and 24 have top ends 68 and 70, lower ends 72 and 74, vertical edges 76, 77, 78, and 79, outer surfaces 82 and 84, and inner surfaces 86 and 88. The lower ends 72 and 74 at the rear portions thereof (as viewed in FIG. 1) are provided with wire-engaging points 90 and 92. In assembled condition, the members 22 and 24 are disposed in the opposed grooves 44 and 46 which retain said members against lateral displacement. The points 90 and 92 pass through the insulation 91 to make electrical connection with the wire 94 while the fiat portion of the ends 72 and 74 may contact the insulation 93 on the wire 96. The contact members 22 and 24 are retained against vertical upward displacement by the protuberances 95 and 97 which press against or into the inner surfaces of the walls 32 and 34.

The bulbs 16 are of the miniature type having a base 97 and a top flange 99, aligning lugs 100, wire terminals 101, and support block 102. The wires leading from the filament in the bulb are brought down through holes in the block 102 and folded outward and upward. When a bulb 16 is pushed down into a socket 12, the lugs 100 are positioned between the opposed setback portions 48 and 50, and the terminals 101 are pressed against the inner surfaces 86 and 88 of the contact members 22 and 24.

The electrical power cord assembly includes the wellknown attachment plug 13 and the circuit-closing double jack 15 so that depending upon the supply voltage, and the resistance of each bulb 16, a plurality of sockets 12 are hookedup in series with the return by the wire 96 which is continuous from jack 15 to plug 13.

Constructed by my inventive method is simple, quick, effective and economical. Depending upon the number of bulbs and sockets desired in the finishing string, the wire 94 and its insulative jacket 91 is cut out at predetermined locations 11 therealong. These become keying notches for further assembly. At each such keying notch, a first body element 18 is placed with the ends 11a and 11b in the power-cord-clamping portions 36. Next the second body element 20 is placed against the first body element 18 with the wire 96 and jacket 93 in the portions 38. This clamps the cord and when the sleeve element 26 is pushed down in place, a socket 12 is formed and is securely clamped in place. The bare ends of the wire 94 are protected within the socket 12. Next the bladelike contact members 22 and 24 are pushed into the grooves 44 and 46 until they are in the position shown in FIG. 3. The pro cess is continued for each socket until the string is complete. Placement of the bulbs 16 makes the assembly ready for use.

Turning to the modification shown in FIGS. 7,8 and 9, to avoid needless repetition certain of the parts are given the same reference characters as the prior-described embodiment with the addition of a prefix 2."

In the modification, one of the body elements, first body element 218 is provided with an insulating separator 217 which is preferably cast integrally with the lower inner surface of wall 232 and the upper surface of base 228. The separator 217 is preferably of wedge shape having a top surface 219. and converging surfaces 221 and 223 which meet at sharp edge 225.

Construction by my modification method avoids the cutting out of portions of the wire 294, but merely cuts the jacket 29] and the wire 294 at predetermined locations 211 therealong. These become keying cuts for the further assembly. At each such keying cut, a first body element 218 is pressed toward said out with the edge 225 entering between ends 2110 and 2llb. The surfaces 221 and 223 force the ends 211a and 2 l lb apart and the separator 217 becomes an insulating barrier between the bare ends of wire 294. The ends 21 la and 2111: become positioned in the power-cord-clamping portions 236. Next the second body element 220 is placed against the first body element 218 with the wire 296 and jacket 293 in the portions 238. This clamps the cord 214 and when the sleeve element 26 is pushed down in place over the elements 218 and 220 a socket 12 is formed and is securely clamped in place. Next the bladelike contact members 22 and 24 are installed in the manner previously described in connection with the main embodiment.

Turning now to the modification shown in FIG. 10, to avoid needless repetition, parts corresponding to those of the modification shown in FIGS. 7 to 9, inclusive, have been given reference characters as in the principal embodiment, with the additional prefix 3."

In this modification, the insulating separator 317 is of bladelike configuration, as contrasted with the wedge shape of the embodiment shown in FIGS. 7 to 9, so as to be more readily insertable in the keying cuts.

I wish it to be understood that 1 do not consider the invention limited to the precise details of structure shown and set forth in this specification for obvious modifications will occur to those skilled in the art to which the invention pertains.

I claim:

1. ln a decorative light string, including a plurality of sockets interconnected by a power cord serving to maintain said sockets in spaced relation, and supply power thereto, the improvement comprising: each of said sockets having first and second socket body elements, each having a power-cordclamping portion, a sleeve element constructed and arranged to hold said body elements in juxtaposed position with said cord held in said power-cord-clamping portionyeach of said first and second socket body elements having a principal longitudinal axis and an inner surface thereof, there being a plurality of longitudinally arranged grooves therein communicating with said surface, and elongated contact members slideably disposed in each of said grooves and frictionally retained therein, each of said contact members having a wireengaging point on one end thereof adjacent said power-cordclamping portion, said grooves exposing elongated side segments of said contact members, said power cord including first and second electrical conductors, insulation surrounding said conductors and maintaining them in parallel mutually insulated relation; said cord being severed at periodic intervals with respect to one of said conductors to form a hiatus, said first and second socket-forming elements enclosing said power cord in the area of said hiatus, whereby said contact members complete a circuit through said socket, the other of said conductors passing in insulated relation through said socket, whereby a plurality of sockets may be interconnected for series current supply to a source of power.

2. Structure in accordance with claim 1, in which said socket includes a wedge-shaped member adapted to be projected into said hiatus upon engagement of said socket forming elements upon said power cord to enlarge said hiatus, whereby the hiatus may be formed solely by a single cut of one of the conductors.

Claims (2)

1. In a decorative light string, including a plurality of sockets interconnected by a power cord serving to maintain said sockets in spaced relation, and supply power thereto, the improvement comprising: each of said sockets having first and second socket body elements, each having a power-cord-clamping portion, a sleeve element constructed and arranged to hold said body elements in juxtaposed position with said cord held in said power-cord-clamping portion; each of said first and second socket body elements having a principal longitudinal axis and an inner surface thereof, there being a plurality of longitudinally arranged grooves therein communicating with said surface, and elongated contact members slideably disposed in each of said grooves and frictionally retained therein, each of said contact members having a wire-engaging point on one end thereof adjacent said power-cord-clamping portion, said grooves exposing elongated side segments of said contact members; said power cord including first and second electrical conductors, insulation surrounding said conductors and maintaining them in parallel mutually insulated relation; said cord being severed at periodic intervals with respect to one of said conductors to form a hiatus, said first and second socket-forming elements enclosing said power cord in the area of said hiatus, whereby said contact members complete a circuit through said socket, the other of said conductors passing in insulateD relation through said socket, whereby a plurality of sockets may be interconnected for series current supply to a source of power.
2. Structure in accordance with claim 1, in which said socket includes a wedge-shaped member adapted to be projected into said hiatus upon engagement of said socket forming elements upon said power cord to enlarge said hiatus, whereby the hiatus may be formed solely by a single cut of one of the conductors.
US3609643A 1970-02-25 1970-02-25 Decorative midget light string Expired - Lifetime US3609643A (en)

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253233A (en) * 1979-05-04 1981-03-03 General Electric Company Rapidly formed electrical connection
US4459463A (en) * 1981-04-20 1984-07-10 Eldon Industries, Inc. Soldering iron handle structure
US4544218A (en) * 1983-06-27 1985-10-01 Hallmark Cards, Inc. Electrical ornamentation system
US4631650A (en) * 1984-10-24 1986-12-23 Ahroni Joseph M Series-parallel connected miniature light set
US4667276A (en) * 1983-12-12 1987-05-19 Sam Cheng Lamp string assembly with protective means
US4779177A (en) * 1984-10-24 1988-10-18 Ahroni Joseph M Series-parallel connected miniature light set
US4807098A (en) * 1984-10-24 1989-02-21 Ahroni Joseph M Lampholders for miniature light sets
US4855882A (en) * 1988-03-29 1989-08-08 Lightgraphix Limited Lighting apparatus
US4899266A (en) * 1984-10-24 1990-02-06 Ahroni Joseph M Miniature light sets and lampholders and method for making them
US4969071A (en) * 1988-06-13 1990-11-06 U.S. Philips Corporation Illumination set
WO1991010093A1 (en) * 1990-01-05 1991-07-11 Ahroni Joseph M Improved chaser decorative light set and miniature light units
US5095250A (en) * 1989-08-03 1992-03-10 Eric Woodside Festoon lighting
US5428518A (en) * 1993-02-02 1995-06-27 Huang; Peter K. H. Christmas lamp seat of double layer structure
US5569044A (en) * 1995-02-16 1996-10-29 Huang; Shun-Feng Christmas lamp socket
US5626419A (en) * 1993-09-27 1997-05-06 Lin; Mei M. Structure of Christmas light
GB2325095A (en) * 1997-03-26 1998-11-11 Siemens Ag Electrical plug-in connection
US6074244A (en) * 1997-07-25 2000-06-13 Crum; Frank Andrew Stringer of decorative lights
US6319056B1 (en) 1997-07-25 2001-11-20 Robert K. Schunk Stringer of decorative lights
US6814462B1 (en) * 2000-08-29 2004-11-09 Ole K. Nilssen Under-cabinet lighting system
US20090064571A1 (en) * 2002-09-04 2009-03-12 John Fakhari Lawn edging with integral electrical conductor and clip connectors
US20150111418A1 (en) * 2011-11-08 2015-04-23 Quirky, Inc. Apparatuses and methods relating to extension cord with integrated cord management
US9935409B2 (en) * 2014-10-31 2018-04-03 Quirky Ip Licensing Llc Apparatuses and methods relating to extension cord with integrated cord management

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253233A (en) * 1979-05-04 1981-03-03 General Electric Company Rapidly formed electrical connection
US4459463A (en) * 1981-04-20 1984-07-10 Eldon Industries, Inc. Soldering iron handle structure
US4544218A (en) * 1983-06-27 1985-10-01 Hallmark Cards, Inc. Electrical ornamentation system
US4667276A (en) * 1983-12-12 1987-05-19 Sam Cheng Lamp string assembly with protective means
US4631650A (en) * 1984-10-24 1986-12-23 Ahroni Joseph M Series-parallel connected miniature light set
US4779177A (en) * 1984-10-24 1988-10-18 Ahroni Joseph M Series-parallel connected miniature light set
US4807098A (en) * 1984-10-24 1989-02-21 Ahroni Joseph M Lampholders for miniature light sets
US4899266A (en) * 1984-10-24 1990-02-06 Ahroni Joseph M Miniature light sets and lampholders and method for making them
US4855882A (en) * 1988-03-29 1989-08-08 Lightgraphix Limited Lighting apparatus
GB2217121A (en) * 1988-03-29 1989-10-18 Lightgraphix Limited Using insulation piercing contacts in lighting apparatus
GB2217121B (en) * 1988-03-29 1992-04-15 Lightgraphix Limited Improvements relating to lighting apparatus
US4969071A (en) * 1988-06-13 1990-11-06 U.S. Philips Corporation Illumination set
US5095250A (en) * 1989-08-03 1992-03-10 Eric Woodside Festoon lighting
WO1991010093A1 (en) * 1990-01-05 1991-07-11 Ahroni Joseph M Improved chaser decorative light set and miniature light units
US5428518A (en) * 1993-02-02 1995-06-27 Huang; Peter K. H. Christmas lamp seat of double layer structure
US5626419A (en) * 1993-09-27 1997-05-06 Lin; Mei M. Structure of Christmas light
US5569044A (en) * 1995-02-16 1996-10-29 Huang; Shun-Feng Christmas lamp socket
GB2325095A (en) * 1997-03-26 1998-11-11 Siemens Ag Electrical plug-in connection
GB2325095B (en) * 1997-03-26 2001-09-12 Siemens Ag Electrical plug-in connection
US6264493B1 (en) 1997-03-26 2001-07-24 Siemens Aktiengesellschaft Electrical plug connection between a knife-edge contact and the contact end of a connector
US6074244A (en) * 1997-07-25 2000-06-13 Crum; Frank Andrew Stringer of decorative lights
US6319056B1 (en) 1997-07-25 2001-11-20 Robert K. Schunk Stringer of decorative lights
US6814462B1 (en) * 2000-08-29 2004-11-09 Ole K. Nilssen Under-cabinet lighting system
US20090064571A1 (en) * 2002-09-04 2009-03-12 John Fakhari Lawn edging with integral electrical conductor and clip connectors
US7810277B2 (en) * 2002-09-04 2010-10-12 Alf Operating Partners, Ltd. Lawn edging with integral electrical conductor and clip connectors
US20150111418A1 (en) * 2011-11-08 2015-04-23 Quirky, Inc. Apparatuses and methods relating to extension cord with integrated cord management
US9935409B2 (en) * 2014-10-31 2018-04-03 Quirky Ip Licensing Llc Apparatuses and methods relating to extension cord with integrated cord management

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