US1649150A - Lamp construction - Google Patents

Lamp construction Download PDF

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Publication number
US1649150A
US1649150A US123358A US12335826A US1649150A US 1649150 A US1649150 A US 1649150A US 123358 A US123358 A US 123358A US 12335826 A US12335826 A US 12335826A US 1649150 A US1649150 A US 1649150A
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US
United States
Prior art keywords
tube
lamp
base
lens
filament
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
US123358A
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English (en)
Inventor
Will J Cameron
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US123358A priority Critical patent/US1649150A/en
Application granted granted Critical
Publication of US1649150A publication Critical patent/US1649150A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K7/00—Lamps for purposes other than general lighting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels

Definitions

  • ll/ly present invention relates to electric lamps and has more particular'refer'ence to a miniature lamp thatv is especially designed for use by physicians, surgeons, dentists, and the like in making examinations, diagnosis and treatment.
  • Lamps of this character must, of necessity, be quite small and at the same time be capable of illuminating an area under inspection to such an extent that the operator may minutely vexamine the a'ected tissue.
  • lamps of this character are mounted upon surgical and dentist instruments such as retractors, speculums, proctoscopes and the like and ⁇ when thus used they must be positioned so that they will not interior with the line of vision ot the operator and at the same time /give the desired illuminationyas well as permit the ready use ot ,operating instruments in the cavity into which the speculums, etc., are-1nserted.
  • surgical and dentist instruments such as retractors, speculums, proctoscopes and the like and ⁇ when thus used they must be positioned so that they will not interior with the line of vision ot the operator and at the same time /give the desired illuminationyas well as permit the ready use ot ,operating instruments in the cavity into which the speculums, etc., are-1nserted.
  • llith my present structure ll have provided a lamp that'has a maximum illumination t in a very small size and is designed. so that the light rays will be projected from the v structure in a plane-ot an angle to the axis of the body and said rays be magnified by )assino' through an intedral lenticular eleJ 3D C D ment. fused upon the side ot the lamp tube.
  • All ot the lamp body excepting the lens is ⁇ treated with opaque material. which peri mits of the use of the light rays in one direction only and prevents the rays reaching the eyes ot the operator.
  • rlhe construction ot myk lamp permits adjustability of the body with respect to the plug or base in assembly during manufacture so that should a slight tilt of the 4body be desired this can bedone within a limited range ot' 'angularity t
  • a miniature lamp for surgical use that is compact and novel inconstruction, dependable in use, and which may be economically manufactured and placed on the market it'or a Vreasonable ⁇ price. @ther objects will be apparent to others after my invention isu'nderstood, and l prefer to accomplish the aforesaid objects and to carry 1926.
  • Figure l is na vertical side elevation of my nate the same parts wherever they appear throughout the several views.
  • 'lthe base is preferably of the usual type, comprising a tubular metal shell 5, a tapered lower portion 6, terminal plate 7, and contact tip 8.
  • 'lhe conductors or kwire filaments 9 yand 10 are secured at their lower inner Vends respectively to the shell and tip as in- .closed at its inner lower end 13 is inserted into the base and encloses the conductors or ⁇ tilaments so that the latter pass through the closed end i3 for connection with the shell and tip.
  • Yl ⁇ he hollow body is formed in the lfollowing manner r-a short glass tube M is heated and a lenticular element 15 is fused to one end, the opposite end remaining open, and said tube is then fusedin a transverse position uponthe end of the body tubel2, the
  • axes of lthe Itubes being atsubstantiallya right angle to each other as indicated in Figure 3. While the tubes are heated a suitable tool is inserted through the portion ot the wall ot tube rll that extends across the end of tube 12 and an opening is made that y establishes communication between the tubes.
  • the filaments may now be placed in the tube 12 with their coil 11 in proper position with respect to the lens l5 and the lower end 13 of the tube is closed or fused together, and at the same time the end of the lateral tube 14 opposite the lens 15 is likewise closed and fused together as at 16 (-Fig. 2).
  • v When the body thus assembled is inserted in the base and the protruding ends of the filaments secured to their respective terminals ⁇ the space between the tube 12 and shell 5 is filled with suitable plastic cement 17 which will main- ⁇ tain the desired assembly when the same has set.
  • the lamp is placed in a test machine or calibrating device and the body may be adjusted to the proper position with respect to the base by projecting the light rays ⁇ upon a target in the test machine. It will be understood that during the assembly operations the interior of the body may be evacuated in any well-known manner.
  • a pin or stud 20 projects from the side of the base shell 5 to permit the lamp being inserted in a socket terminal of the bayonetslot type, but it'will be understood the shell may be threaded for assembly with a socket of the threaded type.
  • a miniature lamp comprisin a base, a body consisting of a tube extentcding from said base and a second tube transverse to the first tube, a filament having its ends connected to the respective terminals of the base and-having a looped portion within the second tube, and a lenticular element fused to one end of the second tube whereby to project light rays laterally from said body.
  • a tubular body in which a filament is housed and consisting of tubes arranged transverse to each other, and a lens fused to the end of one of said tubes whereby to project the light rays laterally from said body.
  • a tubular body In a miniature lamp, a tubular body, a tube closing the outer end of said body and 4in which a filament is looped, and a lens fused in an end of said tube whereby to pro- 'ec the light rays laterally from the said 4.
  • a filament tube In a miniature lamp, a filament tube, a transverse tube at the end of the filalnent tube, a sprayed metallic coating for said filament and transversetubes to render the same non-light-transmitting and a lens closing a light discharge orifice at one end of the transverse tube.
  • a tubular body a transverse tube closing the outer end of the tubular body and housing the filament loop, a lens fused to an end of the transverse tube, and a. sprayed metallic coating on said tubular body and transverse tube and rendering the same non-light-transmitting whereby said lens provides the sole means of egress for the light rays from the filaments within the body.
  • a filament housing a base in which the same is mounted, and a metallic coating on said housing to render a portion of the same non-light-transmitting, there being an uncoated annular portion on the housing adjacent the base whereby to provide an insulation air-gap between the coating and base.
  • a filament housing a base in which the same is mounted, a lens secured to aside portion of the housing to direct light rays lateral to the axis of the housing, and a metallic coating on said housing to render a portion of the same non-light-transmitting whereby the lens provides the sole means of egress for light rays from the. filament, there being an uncoated annular portion on the housing adjacent the base providing an insulation air-gap between the coating and base.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
US123358A 1926-07-19 1926-07-19 Lamp construction Expired - Lifetime US1649150A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US123358A US1649150A (en) 1926-07-19 1926-07-19 Lamp construction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US123358A US1649150A (en) 1926-07-19 1926-07-19 Lamp construction
GB20676/27A GB280146A (en) 1927-08-05 1927-08-05 Electric lamps

Publications (1)

Publication Number Publication Date
US1649150A true US1649150A (en) 1927-11-15

Family

ID=10149811

Family Applications (1)

Application Number Title Priority Date Filing Date
US123358A Expired - Lifetime US1649150A (en) 1926-07-19 1926-07-19 Lamp construction

Country Status (4)

Country Link
US (1) US1649150A (fr)
DE (1) DE534926C (fr)
FR (1) FR639551A (fr)
GB (1) GB280146A (fr)

Also Published As

Publication number Publication date
FR639551A (fr) 1928-06-25
GB280146A (en) 1927-11-10
DE534926C (de) 1931-10-03

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