US1733039A - Locking lamp receptacle - Google Patents

Locking lamp receptacle Download PDF

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Publication number
US1733039A
US1733039A US476320A US47632021A US1733039A US 1733039 A US1733039 A US 1733039A US 476320 A US476320 A US 476320A US 47632021 A US47632021 A US 47632021A US 1733039 A US1733039 A US 1733039A
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US
United States
Prior art keywords
lamp
receptacle
screw
locking
spur
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.)
Expired - Lifetime
Application number
US476320A
Inventor
Frederick H Weston
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to US476320A priority Critical patent/US1733039A/en
Application granted granted Critical
Publication of US1733039A publication Critical patent/US1733039A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R33/97—Holders with separate means to prevent loosening of the coupling or unauthorised removal of apparatus held
    • H01R33/971—Holders with separate means to prevent loosening of the coupling or unauthorised removal of apparatus held for screw type coupling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/69—Redundant disconnection blocking means
    • F16B2200/73—Cam locks or thread locks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5009—For portable articles

Definitions

  • the present invention relates to incandescent electric lighting and more especially to locking receptacles for mechanicallysupporting and electrically connecting in circuit electric lamps and also providing against theft of the latter therefrom.
  • the object of my invention is to provide an improved locking receptacle which shall automatically engage and hold against removal any lamp screwed therein, which may be readily unlocked by means of a proper key, and which may be manufactured at low cost.
  • One embodiment of my invention is shown in the accompanying drawing in which:
  • Fig. 1 is vertical section of a receptacle with a lamp shown in position therein;
  • Fig. 2 is a top plan view thereof;
  • Fig. 3 is a detail view of the locking spring, and
  • Fig. 4 shows in side, edge and end elevations a form of key for use in releasing a lamp from the receptacle.
  • the receptacle is an ordinary commercial form and comprises a ase port-ion 1 to which are attached the usual screw shell contact 2 and center contact 3, and the cover portion 4 having a cylindrical opening in which the screw shell contact 2gis received.
  • the two portions 1 and 4 are held in clamped relation by screws 5.
  • I provide in the face of the base portion 1 between the periphery thereof and the side of the screw shell contact 2 a square recess 6 and secure therein by a screw 7 a hardened steel U-shaped leaf spring 8, the free end of which extends through a hole in the side of and to just inside the screw shell contact 2 and is provided with a bent-up spur' 9 as indicated in Fig. 3. .
  • the spur is made cam- .shaped so that when a lamp is being screwed home in'th receptacle, its metal end or base 10 engages and depresses it without noticeable oppositiom However, when the lamp -is turned backward the spur 9 gouges into the metal end 10 and efl'ectually prevents its unscrewing.
  • the lamp may be unlocked, I 1
  • the screw 11 is seated in a sleeve nut 12 having a square head atits lower end and located in a vertical aperture of the cover member 4. Its inner end is enlarged at 13 so that it maynot be backed'out of its nut and its outer end is rovided with a polygonal projection 14 I where y it may be'turned by an appropriately shaped key.
  • the key 15 is made somewhat longer than the length of an ordinary lamp so that it may be turned freely although necessarily disposed closely adjacent thereto and has its shank 16 in two parts loosely jointed by slot and pin connection 17 so that the main part may berotated on an axis atan angle to the shorter part in engagement with the screw 11.
  • a spring 18 is seated in a cavity of the short part of the shank to yieldably hold the parts in alignment.
  • a lamp receptacle having fixed thereon outside the lamp receiving shell thereof a leaf spring provided with a bent up spur at its free end adapted automatically to gouge into n and" grip the base shell of a lamp upon atconnected insulating base and cover por tions, a bent leaf spring fixed at one end to said base portion outside the lamp receiving shell thereon and the other end thereof projecting within the lamp receiving shell and provided with a spur adapted to grip automatically a. lamp base, and a screw disposed in the cover portion parallel to the axis of the receptacle and adapted to deflect said spring out of locking position.
  • lamp receptacle having secured thereto outside the lamp receiving shell thereof a u-shaped leaf spring provided at its free end with a cam-shaped spur projecting within thelamp receiving shell thereof and adapted to engage and prevent turning of a lamp in one dlrection, a nut seated in and at one side of the axis of said receptacle in alignment with said spring, and a screw carried by said nut and provided at its inner end with a head and at its outer end with a key en-.

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

Description

Oct; 22, 1929. F. H. WESTON 1,733,039
LOCKING LAMP RECEPTACLE Filed June 9. 1921 InVentor: 'F reclerick l'l. Weston,
Patented Oct. 22, 1929 UNITED STATES.
FREDERICK H. WESTON, OF SCHENECTADY,
TRIC COMPALTY, A CORPORATION OF NEW YORK PATENT OFFICE NEW YORK, ASSIGNOR TO GENERAL ELEG- LOCKING LAMP RECEPTACLE The present invention relates to incandescent electric lighting and more especially to locking receptacles for mechanicallysupporting and electrically connecting in circuit electric lamps and also providing against theft of the latter therefrom.
The object of my invention is to provide an improved locking receptacle which shall automatically engage and hold against removal any lamp screwed therein, which may be readily unlocked by means of a proper key, and which may be manufactured at low cost. One embodiment of my invention is shown in the accompanying drawing in which:
Fig. 1 is vertical section of a receptacle with a lamp shown in position therein; Fig. 2 isa top plan view thereof; Fig. 3 is a detail view of the locking spring, andFig. 4 shows in side, edge and end elevations a form of key for use in releasing a lamp from the receptacle.
The receptacle is an ordinary commercial form and comprises a ase port-ion 1 to which are attached the usual screw shell contact 2 and center contact 3, and the cover portion 4 having a cylindrical opening in which the screw shell contact 2gis received. The two portions 1 and 4 are held in clamped relation by screws 5.
I provide in the face of the base portion 1 between the periphery thereof and the side of the screw shell contact 2 a square recess 6 and secure therein by a screw 7 a hardened steel U-shaped leaf spring 8, the free end of which extends through a hole in the side of and to just inside the screw shell contact 2 and is provided with a bent-up spur' 9 as indicated in Fig. 3. .The spur is made cam- .shaped so that when a lamp is being screwed home in'th receptacle, its metal end or base 10 engages and depresses it without noticeable oppositiom However, when the lamp -is turned backward the spur 9 gouges into the metal end 10 and efl'ectually prevents its unscrewing.
- In order that provide a screw 11 parallel tothe axis of'the receptacle which upon being turned in depresses the spring 8 sufliciently to move its spur 9 out of engagement with the lamp end. P
the lamp may be unlocked, I 1
The screw 11 is seated in a sleeve nut 12 having a square head atits lower end and located in a vertical aperture of the cover member 4. Its inner end is enlarged at 13 so that it maynot be backed'out of its nut and its outer end is rovided with a polygonal projection 14 I where y it may be'turned by an appropriately shaped key.
The key 15 is made somewhat longer than the length of an ordinary lamp so that it may be turned freely although necessarily disposed closely adjacent thereto and has its shank 16 in two parts loosely jointed by slot and pin connection 17 so that the main part may berotated on an axis atan angle to the shorter part in engagement with the screw 11. A spring 18 is seated in a cavity of the short part of the shank to yieldably hold the parts in alignment.
While I have shown and described the best embodiment of the invention known to me,
I do not desire to be restricted thereto.
What I claim as new and desire to secure by Letters Patent of the United States, is
1. A lamp receptacle having fixed thereon outside the lamp receiving shell thereof a leaf spring provided with a bent up spur at its free end adapted automatically to gouge into n and" grip the base shell of a lamp upon atconnected insulating base and cover por tions, a bent leaf spring fixed at one end to said base portion outside the lamp receiving shell thereon and the other end thereof projecting within the lamp receiving shell and provided with a spur adapted to grip automatically a. lamp base, and a screw disposed in the cover portion parallel to the axis of the receptacle and adapted to deflect said spring out of locking position.
3. lamp receptacle having secured thereto outside the lamp receiving shell thereof a u-shaped leaf spring provided at its free end with a cam-shaped spur projecting within thelamp receiving shell thereof and adapted to engage and prevent turning of a lamp in one dlrection, a nut seated in and at one side of the axis of said receptacle in alignment with said spring, and a screw carried by said nut and provided at its inner end with a head and at its outer end with a key en-.
gaging projection.
4. A lamp receptacle provided with a yield:
ter, and key actuated means located outside the lamp receiving shell and parallel to the axis thereof for positively depressing said spur out of operative position.
In witness whereof, I have hereunto set I ny hand this 8th day of June, 1921.
FREDERICK H. WESTON.
US476320A 1921-06-09 1921-06-09 Locking lamp receptacle Expired - Lifetime US1733039A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US476320A US1733039A (en) 1921-06-09 1921-06-09 Locking lamp receptacle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US476320A US1733039A (en) 1921-06-09 1921-06-09 Locking lamp receptacle

Publications (1)

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US1733039A true US1733039A (en) 1929-10-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303456A (en) * 1964-10-23 1967-02-07 Mc Graw Edison Co Lamp socket
US4534101A (en) * 1982-01-27 1985-08-13 Rexnord Inc. Method of installing self-locking nut and bolt assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303456A (en) * 1964-10-23 1967-02-07 Mc Graw Edison Co Lamp socket
US4534101A (en) * 1982-01-27 1985-08-13 Rexnord Inc. Method of installing self-locking nut and bolt assembly

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