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US1106960A - Electric glow-lamp. - Google Patents

Electric glow-lamp. Download PDF

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Publication number
US1106960A
US1106960A US452485A US1908452485A US1106960A US 1106960 A US1106960 A US 1106960A US 452485 A US452485 A US 452485A US 1908452485 A US1908452485 A US 1908452485A US 1106960 A US1106960 A US 1106960A
Authority
US
United States
Prior art keywords
lamp
electric glow
electric
conductive
glower
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
US452485A
Inventor
Walther Nernst
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.)
NERNST LAMP Co
Original Assignee
NERNST 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 claimed from US67560398A external-priority patent/US900416A/en
Application filed by NERNST LAMP Co filed Critical NERNST LAMP Co
Priority to US452485A priority Critical patent/US1106960A/en
Application granted granted Critical
Publication of US1106960A publication Critical patent/US1106960A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/04—Incandescent bodies characterised by the material thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron

Definitions

  • -ment or member is a non-conductor at ordinary temperaturesrand which may be made conductive by subjecting it to a relatively high degree of heat.
  • the object of my invention is to provide alight emitting member or glowerv of such composition of materials as shall specially adapt it for efiicient service and long life.
  • a glower formed of a mixture of certain materials will become conductive at a lower temperature and be more durable in service than a glower made of asingle material, provided the materials are thoroughly powdered and mixed together then combined with a suitable binding material, and formed into the proper shape and thoroughly baked, suitable terminals of conducting material being attached to the ends of the glower in order to facilitate connecting it in circuit for operation.
  • My invention contemplates the employment of any one of a considerable variety of mixtures of materials, but mixtures of two or more of the oxide of zirconium, yttrium, thorium, beryllium, and magnesium will generally be found most desirable. I may, however, combine one of these oxids, such, for example, as the oxid of magnesium, with a small percentage of boric acid, chlorid of calcium, tungstic acid, or the like.
  • a conductor for electric lamps consisting of an intimate mixture of yttria and tungstic acid.
  • a light giving body for electric glow lamps which is non-conductive at atmospheric'temperatures and is conductive at high temperatures, consisting of an intimate mixture containing yttria and a small percentage of tungstic acid.
  • a light giving body for electric glow lamps which is non-conductive at atmospheric temperatures and is conductive at high temperatures, consisting of an intimate mixture of the oxid of yttrium and the oxid of tungsten, the former greatly preponderating in quantity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Resistance Heating (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Description

may
arr are.
WALTHEB NElR/NST, OF GOTTINGEN,. GERMANY, ASSIGNOR T0 NERNST LAMP COMPANY, CORPORATION OF PENNSYLVANIA.
ELECTRIC GLOW-LAMP.
No Drawing. Original application Specification of Letters Patent.
Patented aa ii, lam.
filed September 10, 1908. eria1No 452,485.
-ment or member is a non-conductor at ordinary temperaturesrand which may be made conductive by subjecting it to a relatively high degree of heat.
The object of my invention is to provide alight emitting member or glowerv of such composition of materials as shall specially adapt it for efiicient service and long life.
I have found that a glower formed of a mixture of certain materials will become conductive at a lower temperature and be more durable in service than a glower made of asingle material, provided the materials are thoroughly powdered and mixed together then combined with a suitable binding material, and formed into the proper shape and thoroughly baked, suitable terminals of conducting material being attached to the ends of the glower in order to facilitate connecting it in circuit for operation.
My invention contemplates the employment of any one of a considerable variety of mixtures of materials, but mixtures of two or more of the oxide of zirconium, yttrium, thorium, beryllium, and magnesium will generally be found most desirable. I may, however, combine one of these oxids, such, for example, as the oxid of magnesium, with a small percentage of boric acid, chlorid of calcium, tungstic acid, or the like.
When a glower formed of a proper mixture of two or more of the materials above specified is connectedin an electric circuit a and heated to its conducting temperature, the heat developed in itself bythe passage of a current therethrough will serve to maintain it in a conducting condition and cause it to yield light in a very eflicient manner.
This application is a division of application, Serial No. 675,603, filed March 29, 1898, which has issued as Patent No. 900,416, and other divisions thereof are Serial No. 848,567, which has issued as Patent No. 1,071,649, and Serial No. 763,184, filed September 24c, 1913.
I claim as my invention:
1. A conductor for electric lamps, consisting of an intimate mixture of yttria and tungstic acid.
2. A light giving body for electric glow lamps which is non-conductive at atmospheric'temperatures and is conductive at high temperatures, consisting of an intimate mixture containing yttria and a small percentage of tungstic acid.
3. A light giving body for electric glow lamps which is non-conductive at atmospheric temperatures and is conductive at high temperatures, consisting of an intimate mixture of the oxid of yttrium and the oxid of tungsten, the former greatly preponderating in quantity.
4:. A glower for incandescent electric Witnesses HENRY HASPER, WOLDEMAR HAUPT.
US452485A 1898-03-29 1908-09-10 Electric glow-lamp. Expired - Lifetime US1106960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US452485A US1106960A (en) 1898-03-29 1908-09-10 Electric glow-lamp.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67560398A US900416A (en) 1898-03-29 1898-03-29 Electric glow-lamp.
US452485A US1106960A (en) 1898-03-29 1908-09-10 Electric glow-lamp.

Publications (1)

Publication Number Publication Date
US1106960A true US1106960A (en) 1914-08-11

Family

ID=3175152

Family Applications (1)

Application Number Title Priority Date Filing Date
US452485A Expired - Lifetime US1106960A (en) 1898-03-29 1908-09-10 Electric glow-lamp.

Country Status (1)

Country Link
US (1) US1106960A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996696A (en) * 1959-03-13 1961-08-15 Horizons Inc Temperature measuring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996696A (en) * 1959-03-13 1961-08-15 Horizons Inc Temperature measuring device

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