US3324442A - Lamp holder, primarily for use with circuit boards - Google Patents

Lamp holder, primarily for use with circuit boards Download PDF

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Publication number
US3324442A
US3324442A US426578A US42657865A US3324442A US 3324442 A US3324442 A US 3324442A US 426578 A US426578 A US 426578A US 42657865 A US42657865 A US 42657865A US 3324442 A US3324442 A US 3324442A
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Prior art keywords
lamp
pinch
holder
notches
cavity
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Expired - Lifetime
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US426578A
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Greasley Eric Arthur
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Pressac Ltd
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Pressac Ltd
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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
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/09—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for baseless lamp bulb

Definitions

  • the invention is concerned with a holder for a lamp of the kind usually termed a baseless electric lamp which normally comprises a flattened glass pinch along and from which extend lead-in wires which coact with contacts on the holder for engaging appropriate parts of a printed circuit.
  • a baseless electric lamp which normally comprises a flattened glass pinch along and from which extend lead-in wires which coact with contacts on the holder for engaging appropriate parts of a printed circuit.
  • an electric lamp holder for a lamp of the kind referred to and intended for fitment to circuit board which comprises a two-part molding of synthetic plastic material, which are adapted to be interconnected and interlocked as a snap fit, one of said parts being formed with a cavity for receiving said flattened glass pinch of the lamp and also with looking tongues which can be engaged in complementary slots in the other of said parts, this other part being formed with one or more lamp-retaining projections for engaging in notches or recesses in the flattened glass pinch of the lamp, the first-mentioned part of the holder being fitted with a pair of springy electrically conductive contacts which co-act respectively with complementary leadin wires on the pinch of the lamp and each of which is formed with a bowed or other suitably shaped portion which spring-loads the pinch of the lamp to maintain said lamp-retaining projections in engagement with the notches or recesses in the pinch of the lamp.
  • FIGURE 1 is a vertical section through the lamp holder taken on the line II of FIGURE 2 and indicating a lamp in chain-dotted outline.
  • FIGURE 2 is a plan view.
  • FIGURE 3 is a side view.
  • FIGURE 4 is an inverted plan view.
  • FIGURES 5, 6 and 7 are a vertical section, a plan view and a side view respectively of one part of the assembly.
  • FIGURES 8, 9 and 10 are similar views of the other part of the assembly and FIGURES 11, 12 and 13 respectively are side, end and plan views of a contact.
  • the lamp holder comprises two parts 1 and 2 made as moldings of synthetic plastic material, and the part 1 is formed with a cavity 1a in which is received a flattened glass pinch 3 of a lamp 4 of the kind usually termed a baseless electrical lamp.
  • the part 1 as clearly shown in FIGURE 1, and 8 to 10, is formed at its mouth with a surrounding ledge formed with a pair of upstanding locking tongues 6 formed adjacent to their lower ends with shoulders 7 (see FIG. 8), and which tongues 6 are engageable through slots 8 in the floor 8a of the second part 2.
  • the arrangement is such that when the tongues 6 of the part 1 are inserted through the slots 8 of the part 2 from below, the tongues 6 when fully inserted through the slots 8 snap outwardly so that the shoulders 7 engage over the floor 8a of the part 2 adjacent to said slots 8 as clearly shown in FIGURE 1.
  • the floor 8a of the part 2 is formed with an opening 9 through which can be inserted the flattened glass pinch 3 of a lamp 4 and the floor 8a of the part 2 is also formed 3,324,442 Patented June 6, 1967 at opposite sides and ends with downwardly and inwardly directed projections 10 which constitute lamp retaining projections which engage in notches or recesses 11 (FIG- URE 1) preformed in the upper end of the flattened glass pinch 3 of the lamp.
  • the said recesses or notches 11 of the lamp are yieldingly urged into engagement with the lamp-retaining projections 10 by bowed parts 12 of a pair of springy electrically conductive contacts 13 illustrated separately in FIGS. 11 to 13, the bowed part 12 of each spring exerting a sideways thrust on the bulb to enable the projections Ill of the part 2, and which extend into the cavity In of the part 1, to engage in the lamp reces or groove 11 with a snap action.
  • the springy contacts 13 make electrical contact with lead-in wires extending from the glass pinch 3 and each contact comprises a base portion 14 from one side of which the bowed part 12 extends vertically and from the other side of which extends a vertical limb 15 which terminate in an outwardly and slightly upwardly inclined limb 16 which is sandwiched and insulated between the ledge 5 and the floor 8a of the part 2 and terminates at its outer end in a contact 17 which engages a conductor 11 of a circuit board 12 shown in FIG. 1 only.
  • the lamp holder is inserted through a slotted opening in a printed circuit board 12 and is then turned about its axis to lock it securely to said board the latter being disposed between a lower flange-like portion 212 of the part 2 and diametrically opposed hollow portions 20 having tapered or cam shaped lower edges 2d.
  • the upper face of the flange 2b is formed with tapered portions 2e which are complementary to the surfaces 2d of the parts 20 to ensure that the lamp holder become tightly clamped to the printed circuit board 12.
  • An electric lamp holder for a baseless electric lamp having a flattened glass pinch formed with notches therein comprising a two-part molding of synthetic plastic material consisting of first and second parts, the first part having a cavity for receiving the pinch of said lamp, locking tongues on said first part and complementary slots in the second part through which the tongues of the first part can be passed and interlocked with the second part as a snap fit, the second part being formed with lamp-retaining projections for engagement with the notches in the pinch of the lamp, a pair of springy electrically conductive contacts fitted to the first part, each contact comprising a portion housed in the said cavity for co-acting with complementary lead-in wires on the pinch of the lamp, the portion of each contact in the cavity having a bowed part for spring-loading the pinch of the lamp to maintain the retaining projections of the second part in engagement with the notches in the lamp, the contacts also comprising portions which extend to the outside of the holder for engagement with a circuit board.
  • An electric lamp holder as claimed in claim 1 including a locking flange and locking members on the second part for gripping said circuit board.

Description

i 1%? E. A. GR'EASLEY 3,324,442
LAMP HOLDER, FRIMARILY FOR USE WITH CIRCUIT BOARDS Filed Jan. 19, 1965 2 Sheets-Sheet 1 x 20! I INVENTOR 2b Eric ArThur rea ley LAMP HOLDER, PRIMARILY FOR USE WITH CIRCUIT BOARDS Filed Jan. 19 1965 June 167 E. A. GREASLEY 2 Shets-Sheet 2 12 F/a/z IN VE N TOR Eric AriMr Grmsley 3,324,442 LAMP HOLDER, PRIMARILY FOR USE WITH CIRCUIT BOARDS Eric Arthur Greasley, Stapleford, England, assignor to Pressac Limited, Long Eaton, Nottingham, England, a British company Filed Jan. 19, 1965, Ser. No. 426,578 Claims priority, application Great Britain, Jan. 31, 1954, 4,183/64 2 Claims. (Cl. 33917) This invention relates to a lamp holder intended primarily for use with printed, die stamped or etched circuit boards.
More particularly, the invention is concerned with a holder for a lamp of the kind usually termed a baseless electric lamp which normally comprises a flattened glass pinch along and from which extend lead-in wires which coact with contacts on the holder for engaging appropriate parts of a printed circuit.
According to the present invention there is provided an electric lamp holder for a lamp of the kind referred to and intended for fitment to circuit board which comprises a two-part molding of synthetic plastic material, which are adapted to be interconnected and interlocked as a snap fit, one of said parts being formed with a cavity for receiving said flattened glass pinch of the lamp and also with looking tongues which can be engaged in complementary slots in the other of said parts, this other part being formed with one or more lamp-retaining projections for engaging in notches or recesses in the flattened glass pinch of the lamp, the first-mentioned part of the holder being fitted with a pair of springy electrically conductive contacts which co-act respectively with complementary leadin wires on the pinch of the lamp and each of which is formed with a bowed or other suitably shaped portion which spring-loads the pinch of the lamp to maintain said lamp-retaining projections in engagement with the notches or recesses in the pinch of the lamp.
To enable the invention to be clearly understood a preferred embodiment thereof will now be described by way of example with reference to the accompanying drawings, wherein:
FIGURE 1 is a vertical section through the lamp holder taken on the line II of FIGURE 2 and indicating a lamp in chain-dotted outline.
FIGURE 2 is a plan view.
FIGURE 3 is a side view.
FIGURE 4 is an inverted plan view.
FIGURES 5, 6 and 7 are a vertical section, a plan view and a side view respectively of one part of the assembly. FIGURES 8, 9 and 10 are similar views of the other part of the assembly and FIGURES 11, 12 and 13 respectively are side, end and plan views of a contact.
Referring firstly to FIGURES 1 to 4, the lamp holder comprises two parts 1 and 2 made as moldings of synthetic plastic material, and the part 1 is formed with a cavity 1a in which is received a flattened glass pinch 3 of a lamp 4 of the kind usually termed a baseless electrical lamp. The part 1, as clearly shown in FIGURE 1, and 8 to 10, is formed at its mouth with a surrounding ledge formed with a pair of upstanding locking tongues 6 formed adjacent to their lower ends with shoulders 7 (see FIG. 8), and which tongues 6 are engageable through slots 8 in the floor 8a of the second part 2. The arrangement is such that when the tongues 6 of the part 1 are inserted through the slots 8 of the part 2 from below, the tongues 6 when fully inserted through the slots 8 snap outwardly so that the shoulders 7 engage over the floor 8a of the part 2 adjacent to said slots 8 as clearly shown in FIGURE 1.
The floor 8a of the part 2 is formed with an opening 9 through which can be inserted the flattened glass pinch 3 of a lamp 4 and the floor 8a of the part 2 is also formed 3,324,442 Patented June 6, 1967 at opposite sides and ends with downwardly and inwardly directed projections 10 which constitute lamp retaining projections which engage in notches or recesses 11 (FIG- URE 1) preformed in the upper end of the flattened glass pinch 3 of the lamp.
The said recesses or notches 11 of the lamp are yieldingly urged into engagement with the lamp-retaining projections 10 by bowed parts 12 of a pair of springy electrically conductive contacts 13 illustrated separately in FIGS. 11 to 13, the bowed part 12 of each spring exerting a sideways thrust on the bulb to enable the projections Ill of the part 2, and which extend into the cavity In of the part 1, to engage in the lamp reces or groove 11 with a snap action. The springy contacts 13 make electrical contact with lead-in wires extending from the glass pinch 3 and each contact comprises a base portion 14 from one side of which the bowed part 12 extends vertically and from the other side of which extends a vertical limb 15 which terminate in an outwardly and slightly upwardly inclined limb 16 which is sandwiched and insulated between the ledge 5 and the floor 8a of the part 2 and terminates at its outer end in a contact 17 which engages a conductor 11 of a circuit board 12 shown in FIG. 1 only.
In use, the lamp holder is inserted through a slotted opening in a printed circuit board 12 and is then turned about its axis to lock it securely to said board the latter being disposed between a lower flange-like portion 212 of the part 2 and diametrically opposed hollow portions 20 having tapered or cam shaped lower edges 2d. Preferably, the upper face of the flange 2b is formed with tapered portions 2e which are complementary to the surfaces 2d of the parts 20 to ensure that the lamp holder become tightly clamped to the printed circuit board 12.
I claim:
1. An electric lamp holder for a baseless electric lamp having a flattened glass pinch formed with notches therein, the holder comprising a two-part molding of synthetic plastic material consisting of first and second parts, the first part having a cavity for receiving the pinch of said lamp, locking tongues on said first part and complementary slots in the second part through which the tongues of the first part can be passed and interlocked with the second part as a snap fit, the second part being formed with lamp-retaining projections for engagement with the notches in the pinch of the lamp, a pair of springy electrically conductive contacts fitted to the first part, each contact comprising a portion housed in the said cavity for co-acting with complementary lead-in wires on the pinch of the lamp, the portion of each contact in the cavity having a bowed part for spring-loading the pinch of the lamp to maintain the retaining projections of the second part in engagement with the notches in the lamp, the contacts also comprising portions which extend to the outside of the holder for engagement with a circuit board.
2. An electric lamp holder as claimed in claim 1, including a locking flange and locking members on the second part for gripping said circuit board.
References Cited UNITED STATES PATENTS 2,475,243 7/1949 Irrgang 339l96 X 3,017,599 1/1962 Loesch 339-l27 3,253,249 5/1966 Hess et al 339127 OTHER REFERENCES Uberbacher, E. IBM Technical Disclosure Bulletin; October 1963, pages 59 and 60.
MARVIN A. CHAMPION, Primary Examiner. ALFRED A. TRASK, Examiner.

Claims (1)

1. AN ELECTRIC LAMP HOLDER FOR A BASELESS ELECTRIC LAMP HAVING A FLATTENED GLASS PINCH FORMED WITH NOTCHES THEREIN, THE HOLDER COMPRISING A TWO-PART MOLDING OF SYNTHETIC PLASTIC MATERIAL CONSISTING OF FIRST AND SECOND PARTS, THE FIRST PART HAVING A CAVITY FOR RECEIVING THE PINCH OF SAID LAMP, LOCKING TONGUES ON SAID FIRST PART AND COMPLEMENTARY SLOTS IN THE SECOND PART THROUGH WHICH THE TONGUES OF THE FIRST PART CAN BE PASSED AND INTERLOCKED WITH THE SECOND PART AS A SNAP FIT, THE SECOND PART BEING FORMED WITH LAMP-RETAINING PROJECTIONS FOR ENGAGEMENT WITH THE NOTCHES IN THE PINCH OF THE LAMP, A PAIR OF SPRINGY ELECTRICALLY CONDUCTIVE CONTACTS FITTED TO THE FIRST PART, EACH CONTACT COMPRISING A PORTION HOUSED IN THE SAID CAVITY FOR CO-ACTING WITH COMPLEMENTARY LEAD-IN WIRES ON THE PINCH OF THE LAMP, THE PORTION OF EACH CONTACT IN THE CAVITY HAVING A BOWED PART FOR SPRING-LOADING THE PINCH OF THE LAMP TO MAINTAIN THE RETAINING PROJECTIONS OF THE SECOND PART IN ENGAGEMENT WITH THE NOTCHES IN THE LAMP, THE CONTACTS ALSO COMPRISING PORTIONS WHICH EXTEND TO THE OUTSIDE OF THE HOLDER FOR ENGAGEMENT WITH A CIRCUIT BOARD.
US426578A 1964-01-31 1965-01-19 Lamp holder, primarily for use with circuit boards Expired - Lifetime US3324442A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4183/64A GB1027106A (en) 1964-01-31 1964-01-31 A lamp holder, primarily for use with circuit boards

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US3324442A true US3324442A (en) 1967-06-06

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436717A (en) * 1966-02-09 1969-04-01 United Carr Inc Holder for an electric lamp
US3497865A (en) * 1966-10-04 1970-02-24 United Carr Inc Lampholder
US3798588A (en) * 1971-11-10 1974-03-19 Trw Inc Electrical socket assembly
US3909096A (en) * 1974-02-28 1975-09-30 Itt Lamp socket for use with printed circuits and the like
US4114972A (en) * 1976-06-23 1978-09-19 Trw Inc. Wedge base bulb socket
DE2920460A1 (en) * 1978-05-30 1979-12-13 Ford Werke Ag LIGHT ARRANGEMENT ON A CIRCUIT BOARD OF AN INSTRUMENT MOUNT
US4373771A (en) * 1980-11-10 1983-02-15 General Motors Corporation Lamp socket
US5709571A (en) * 1996-02-20 1998-01-20 Yazaki Corporation Wedge-base lamp socket with terminal cover
US9306327B1 (en) * 2015-04-17 2016-04-05 Osram Sylvania Inc. Clip for wire harness

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475243A (en) * 1944-11-10 1949-07-05 Louis J Irrgang Socket connector plug
US3017599A (en) * 1960-01-05 1962-01-16 Gen Motors Corp Lamp socket
US3253249A (en) * 1961-05-03 1966-05-24 Republic Ind Corp Bulb socket for panel mounting

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475243A (en) * 1944-11-10 1949-07-05 Louis J Irrgang Socket connector plug
US3017599A (en) * 1960-01-05 1962-01-16 Gen Motors Corp Lamp socket
US3253249A (en) * 1961-05-03 1966-05-24 Republic Ind Corp Bulb socket for panel mounting

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436717A (en) * 1966-02-09 1969-04-01 United Carr Inc Holder for an electric lamp
US3497865A (en) * 1966-10-04 1970-02-24 United Carr Inc Lampholder
US3798588A (en) * 1971-11-10 1974-03-19 Trw Inc Electrical socket assembly
US3909096A (en) * 1974-02-28 1975-09-30 Itt Lamp socket for use with printed circuits and the like
US4114972A (en) * 1976-06-23 1978-09-19 Trw Inc. Wedge base bulb socket
DE2920460A1 (en) * 1978-05-30 1979-12-13 Ford Werke Ag LIGHT ARRANGEMENT ON A CIRCUIT BOARD OF AN INSTRUMENT MOUNT
US4373771A (en) * 1980-11-10 1983-02-15 General Motors Corporation Lamp socket
US5709571A (en) * 1996-02-20 1998-01-20 Yazaki Corporation Wedge-base lamp socket with terminal cover
US9306327B1 (en) * 2015-04-17 2016-04-05 Osram Sylvania Inc. Clip for wire harness

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Publication number Publication date
GB1027106A (en) 1966-04-20
DE1489457A1 (en) 1969-02-13
DE1489457B2 (en) 1970-11-26

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