US1813572A - Lamp base - Google Patents

Lamp base Download PDF

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Publication number
US1813572A
US1813572A US229825A US22982527A US1813572A US 1813572 A US1813572 A US 1813572A US 229825 A US229825 A US 229825A US 22982527 A US22982527 A US 22982527A US 1813572 A US1813572 A US 1813572A
Authority
US
United States
Prior art keywords
base
bulb
neck
ring
collar
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
US229825A
Other languages
English (en)
Inventor
Daniel S Gustin
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.)
Westinghouse Lamp Co
Original Assignee
Westinghouse Lamp 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
Priority to NL24127D priority Critical patent/NL24127C/xx
Application filed by Westinghouse Lamp Co filed Critical Westinghouse Lamp Co
Priority to US229825A priority patent/US1813572A/en
Priority to GB31052/28A priority patent/GB299780A/en
Priority to DEW80761D priority patent/DE510122C/de
Priority to FR663216D priority patent/FR663216A/fr
Application granted granted Critical
Publication of US1813572A publication Critical patent/US1813572A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/06—Switches operated by change of speed
    • H01H35/10—Centrifugal switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H01J5/58—Means for fastening the separate part to the vessel, e.g. by cement
    • H01J5/60—Means for fastening the separate part to the vessel, e.g. by cement for fastening by mechanical means

Definitions

  • This invention relates to electrical devices such as incandescent electric lamps and more particularly to an improved base portion therefor.
  • Another object of the invention is to provide a base which may be mechanically secured to a lamp bulb in a simple and effective manner.
  • a further object of the invention is to provide a base for incandescent electric lamps or the like comprising one or more elements so constructed and arranged as to be quickly assembled and readily attached to a lamp bulb.
  • the present invention aims to provide a base which may be mechanically secured to a lamp bulb and at the same time maintain the standardized form of the base to make the same practical and meet existing conditions.
  • a base of the well known screw type variety is employed.
  • a split or otherwise resilient collar is provided having its central or internal perimeter of non-circular form.
  • the base portion or neck of the bulb is formed so as to have a transverse cross-sectional area thereof with a perimeter substantially the same dimensions as the perimeter within the collar.
  • the collar is applied to the neck of the bulb and is held from rotation by reason of its engagement with the shaped portion thereof.
  • the base is then inserted over the collar which, by
  • the collar and bulb may then be secured by soldering or brazing, the soldering or brazing operation also serving to secure one of the lead wires of the bulb to the base.
  • the other lead wire may be secured to the lower central contact in the usual manner.
  • This construction provides a base of a minimum number of parts which may be easily and efi'ectively applied to a bulb at such rate of speed so as to make this form of base practical in connection with the other high speed operations attending the making of incandescent lamps or the like.
  • FIG. 3 shows the usual screw type base for use in connection with the collar shown in Fig. 2;
  • Fig. 4 is an enlarged fragmentary view of a bulb and base, the outer shell of the base being broken away to more clearly show the collar applied to the neck of the bulb;
  • Fig. 5 shows a base comprising a shell and a collar partially in vertical cross-section illustrating a method of soldering a leadingin wire upon the inside of the shell of the base;
  • Fig. 6 is a plan View of the base and collar shown in Fig. 5 and includes a cross-sectional view of the neck of the bulb;
  • Fig. 7 is a cross-sectional View of a bulb neck showing a modified form of securing a base to the neck;
  • Fig. 8 is a side view of the modification shown in Fig. 7;
  • Fig. 8 is a sectional view of a bulb neck showing a retainer-ring or member of an elastic or moldable material
  • Fig. 9 is a perspective view of the apparatus which may be employed for forming the bulb neck to the required noncircular shape.
  • an incandescent electric lamp comprising a bulb 10 containing a mount 11 comprised of a flare tube 12 sealed at 13 to the bulb in the usual manner.
  • the mount may include an arbor 14 having a filament 15 mounted thereon.
  • the bulb shown being of the so-called tipless type, the mount is provided with an exhaust tube 16.
  • this type of bulb is provided with a neck of substantially cylindrical or circular form.
  • the neck is deformed to provide depressions or notches 17
  • These depressions may be of any suitable shape but in the present construction, consist of depressions having their bottom surfaces 18 substantially straight and disposed in angular relation. It has been found preferable to form three depressions so that the neck of the bulb taken in transverse cross-section through the bottoms of the depressions is of triangular configuration. This formation of the neck of the bulb leaves an annulus or edge 19 at the lower end of the bulb neck.
  • a bulb having the above mentioned depressions formed therein may be attached to the usual type of shell or base 20 by a ring or collar 21.
  • This collar is preferably stamped from a sheet of metal having its outside perimeter 22 of circular form and its insideperimeter 23 of triangular form to conform with the bottoms 18 of the several depressions in the neck of the bulb.
  • the shell 20 and the ring 21 constitute a complete base, the shell 20 may be termed a base member.
  • portions 24 of the sheet metal may be folded over and inwardly toward the cylindrical portion of the ring. This construction strengthens the edges of the ring and gives a strong and rigid member.
  • the ring 21 may be open or split at 25 so that it acts as a resilient member and ma be slipped over the edge 19 of the bulb neck so that the edges of the inside perimeter 23 are positioned in the depressions 17.
  • a base 20 may be positioned to surround the said member and hold the same by reason of its resilient character in firm relation to the bulb neck.
  • the ring 21 may be divided or made in two or more sections which may be held to secure the bulb neck when enclosed by the shell 01' base member 20.
  • the bulb 10 is provided with a shoulder 26 against which the upper edge 27 of the base 20 may engage so that when the base is in position it completely surrounds the ring 21 and practically covers the same by reason of the close relation between the edge 27 of the base and the shoulder of the bulb, thus providing a base mechanically secured to a bulb which has the same symmetrical and neat appearance as found in a base cemented ,to the bulb.
  • the present construction offers a more uniform product, since the edge of the base may be in closer relation to the bulb than is possible with cement and because the slight overflow of cement which occasionally occurred is eliminated.
  • the base employed is the same as commonly used in connection with standard lamps. and includes a bottom or central contact 28 insulated from the shell by a glass insulator 29 in the usual manner. It will be evident that the resilient retainer member 21 is firmly held in engagement with the neck of the bulb and by reason of means in the form of the triangle in the periphery of the ring and means in the form of depressions in the base, the ring will be held from either rotary or vertical relative movement.
  • the base 20 may be secured to the ring by any suitable manner as, for example, the outer surface 22 of the ring may be tinned or covered with a thin layer of a fusible material and heat may be applied to secure the retainer ring to the base, thus firmly locking the base to the bulb. It has been found, however, that the operation of securing the base to the retainer ring may be accomplished when soldering lead-in wire 30 to the base.
  • the base is provided with a notch 31 and the lead wire is led outwardl through the notch and soldered on by a eposit of fusible material 32 as shown in Fig. 4.
  • the solder will flow throu h the notch on to the retainer ring there y uniting the ring to the base and in this manner, the base is secured from removal from the bulb.
  • the remaining leading-in wire 33 may be fused to the contact 28 in the usual manner.
  • the retainer member 21 is provided with an aperture of triangular form that such aperture may be of an suitable configuration and the neck of the ulb shaped accordingly.
  • the retainer member of sheet metal material instead of makin the retainer member of sheet metal material, the same may be made in the form of a solid ring 33 as shown in Fig. 8 with an outside diameter 34' to be engaged by the inner wall of the base and with an inside aperture 35 of such shape as to normally conform generally with any given shape of the neck.
  • a ring of this type may be made of fibre or moulded from a soft or yielding heat insulating material as, for example, a condensate product or it may be of soft lead so that when the ring is engaged by the base, the inner aperture thereof will tend to fully conform to and snugly grasp the neck 36 of the bulb should the same have irregularities.
  • Figs. 5 and 6 show a construction whereby the leading-in wire 30 may be soldered or otherwise attached to the base 20 on the inside thereof, thus avoiding any visible solder on the outside of the base.
  • the leading-in wire 30 may be positioned between the retainer ring 21 and the base, an aperture 34 being provided in the retainer ring and a small amount of fusible material 35 which may be in the form of a clip may be disposed in the aperture and about an end of the leading-in wire 30.
  • Fig. 5 also shows a means for obtaining a more snug relation between the retainer member 21 and the bulb which means may comprise a strip 36 of elastic material as, for example, asbestos so that when the retainer member is ressed against the neck of the bulb, the strip 36 will serve as a resilient body and prevent slight relative movement.
  • a strip 36 of elastic material as, for example, asbestos
  • Figs. 7 and 8 show a modified form of retainer member comprising a wire which may be disposed in the depressions 17 of the neck of the bulb and united by twisting the ends of the wire together at 38.
  • Thebase and wire may be soldered together at the twisted portion of the wire and the leading-in wire 30 may also be included in this soldering operation. It will be evident that the wire which acts as the retainer member will hold the bulb in position by reason of the disposition of the wire in the depressions in the neck of the bulb.
  • the depressions 17 may be formed in the bulb either prior to the sealing of the bulb to the mount or the may be made after the mount has been sea ed in to the bulb. The latter method has been found preferable and r as illustrated in Fig. 9, means are shown for providing the depressions with bottoms 18 of substantially straight form.
  • Mechanism for forming the depressions may comprise a holder 39 to support the bulb 10 and a support 40 to receive the exhaust tube of a mount may be provided to hold the mount 11 in position within the bulb.
  • the mount and bulb When so sup ported, the mount and bulb may be united by sealing at 13 in the usual manner and fires 41 may be directed to the neck of the bulb until the same becomes plastic.
  • a pair of jaws 42 and 43 may then be moved together to enclose the neck of the bulb.
  • jaw 42 is provided with a substantially V-shaped notch 44, while the notch 43 may be substantially straight.
  • the jaw 42' is mounted on a lever 45 pivoted at 46 while the jaw 42 is mounted on a lever 47 pivoted at 48.
  • the pivots 46 and 48 may project from a bearing block 49 fastened to a post 50 constituting part of the holder 39.
  • Each of the levers 45 and 47 are provided with a pin 51 having a link 52 pivotally connected therewith.
  • the said link is pivotally attached at 53 to a cross-head 54 slidab-le vertically on the post 50.
  • a forked end 55 of a lever arm 56 may be provided to engage the cross-head so that when the lever is rocked about pivot 57, the cross-head will be lifted and the aws closed.
  • the present construction is of such character as to make it possible to quickly and convenientl apply a base so that the resultant operations may be performed at a high rate of speed commensurate with other lamp making operations.
  • An electrical device comprising a bulb havin a neck provided with substantiall straig t grooves, a resilient collar surround ing said neck, said collar having a circular outside perimeter and straight edges on its inside perimeter, and a base-member engaged with said collar to hold the collar engaged with said neck.
  • An incandescent electric lam comprising a bulb having a neck portion 0 polygonal configuration in transverse cross section to provide a plurality of substantially plane surfaces, a base surrounding said neck portion and a collar having internally pro ecting edges to engage said plane surfaces and an exterior flange to engage with said base.
  • An incandescent electric lamfp comprising a bulb having a neck portion 0 polygonal configuration in transverse cross section to provide a plurality of substantially plane surfaces, a resilient collar having inwardly projecting edges for engagement with said plane surfaces, a substantially cylindrical flange on said collar for engagement with a base for retaining said edges engaged with said plane surfaces.

Landscapes

  • Fastening Of Light Sources Or Lamp Holders (AREA)
US229825A 1927-10-31 1927-10-31 Lamp base Expired - Lifetime US1813572A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL24127D NL24127C (enrdf_load_stackoverflow) 1927-10-31
US229825A US1813572A (en) 1927-10-31 1927-10-31 Lamp base
GB31052/28A GB299780A (en) 1927-10-31 1928-10-26 Improvements in or relating to electric incandescent lamps or similar articles
DEW80761D DE510122C (de) 1927-10-31 1928-10-28 Sockelbefestigung fuer elektrische Gluehlampen
FR663216D FR663216A (fr) 1927-10-31 1928-10-30 Perfectionnements aux lampes électriques à incandescence ou aux articles analogues

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US229825A US1813572A (en) 1927-10-31 1927-10-31 Lamp base

Publications (1)

Publication Number Publication Date
US1813572A true US1813572A (en) 1931-07-07

Family

ID=22862821

Family Applications (1)

Application Number Title Priority Date Filing Date
US229825A Expired - Lifetime US1813572A (en) 1927-10-31 1927-10-31 Lamp base

Country Status (5)

Country Link
US (1) US1813572A (enrdf_load_stackoverflow)
DE (1) DE510122C (enrdf_load_stackoverflow)
FR (1) FR663216A (enrdf_load_stackoverflow)
GB (1) GB299780A (enrdf_load_stackoverflow)
NL (1) NL24127C (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2615073A (en) * 1949-03-12 1952-10-21 Lumalampan Ab Electric lamp bulb
US4496874A (en) * 1981-05-27 1985-01-29 U.S. Philips Corporation Electric lamp having a mechanically connected lamp cap
US4607192A (en) * 1982-11-23 1986-08-19 Thorn Emi Plc Pre-focussed incandescent lamps and method of assembling base thereof
US20050116605A1 (en) * 2002-02-20 2005-06-02 Meinecke Klaus E. Base attachment for electric lamps

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8103436A (nl) * 1981-07-21 1983-02-16 Philips Nv Elektrische lamp met kitloos bevestigde lampvoet.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2615073A (en) * 1949-03-12 1952-10-21 Lumalampan Ab Electric lamp bulb
US4496874A (en) * 1981-05-27 1985-01-29 U.S. Philips Corporation Electric lamp having a mechanically connected lamp cap
US4607192A (en) * 1982-11-23 1986-08-19 Thorn Emi Plc Pre-focussed incandescent lamps and method of assembling base thereof
US20050116605A1 (en) * 2002-02-20 2005-06-02 Meinecke Klaus E. Base attachment for electric lamps

Also Published As

Publication number Publication date
GB299780A (en) 1929-12-05
FR663216A (fr) 1929-08-19
DE510122C (de) 1930-10-16
NL24127C (enrdf_load_stackoverflow)

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