US1106384A - Incandescent body for electric lamps. - Google Patents

Incandescent body for electric lamps. Download PDF

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Publication number
US1106384A
US1106384A US73703812A US1912737038A US1106384A US 1106384 A US1106384 A US 1106384A US 73703812 A US73703812 A US 73703812A US 1912737038 A US1912737038 A US 1912737038A US 1106384 A US1106384 A US 1106384A
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United States
Prior art keywords
uranium
electric lamps
incandescent body
incandescent
filament
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Expired - Lifetime
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US73703812A
Inventor
William G Hughes
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium

Definitions

  • the invention has for its object the production of an incandescing filament for incandescent electric lights or lamps which is composed of substantially pure uranium.
  • Another object of my invention is to provide a filament ofa tough fibrous nature which will be less liable to fracture than filaments composed of material which is of I will afford increased ,candle power in the lamp with less consumption of current.
  • Incandescing filaments in accordance with my invention may be manufactured in accor-dance with different processes, the preferred oneof which will be hereinafter described.
  • uranium chlorid 7 5 grains metallic sodium (finely divided) grains, and potassium chlorid 150 grains.
  • the uranium which is in pure metallic form is drawn into a filament by first passing it through grooved rolls to reduce it to wire-like form, is then re-annealed in any preferred manner, as for example, byv the procedure above outlined and is then drawn through suitable dies, the
  • final or finishing die being constructed from g a diamond or other suitable jewel.
  • the filament is composed solely of dense coherent metallic uranium having an extremely high fusing fi point and capable of great incandescent e ciency at a coinparatlvely low Watt rate per candle power, and free from perceptible disintegration at such efficiency.
  • a filament for incandescent lights composed of. drawn uranium in pure metallic state.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Fibers (AREA)

Description

' To all whom/2'23 may concern -UNITED "STATES PATENT OFFICE.
WILLIAM G. HUGHES, OF PITTSBURGH, PENNSYLVANIA.
INCANDESCENT BODY FOR ELECTRIC LAMPS.
No Drawing.
Be it known that LNVILLIAM G. HUGHES,
a citizen of the United States, and residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Incandescent Bodies for Electric Lamps, of which the following is a specification.
The invention has for its object the production of an incandescing filament for incandescent electric lights or lamps which is composed of substantially pure uranium.
Another object of my invention. is to provide a filament ofa tough fibrous nature which will be less liable to fracture than filaments composed of material which is of I will afford increased ,candle power in the lamp with less consumption of current.
Incandescing filaments in accordance with my invention may be manufactured in accor-dance with different processes, the preferred oneof which will be hereinafter described.
In accordance with the preferred process for obtaining the metallic uranium, I'take, in substantially proportions herein given, uranium chlorid 7 5 grains, metallic sodium (finely divided) grains, and potassium chlorid 150 grains. I place these substances, in layers, in a porcelain or alundum crucible, and cover the crucible contents with potassium. I then place this crucible with its contents in an iron crucible of a size to provide a space between the two crucibles, and I fill this space between the inner and outer crucible with clean broken or granular carbon. I then seal the iron crucible and subject the whole to a high temperature suflicient to produce a white heat. This sets up a thermo-chemical action with the result that the metallic uranium is formed or settles in the bottom of the inner crucible.
After obtaining the uranium metal, it is Specification of Letters Patent. Patented Aug, 11, 1914;, Application filed December 16, 1912. Serial No. 737,038.
process, in the absence of air, after which it.
is drawn into Wire by any of the Well-known processes by which it is shaped for filament use. As an example of one method of annealing and one of drawing the uranium, the
thus annealed, the uranium which is in pure metallic form, is drawn into a filament by first passing it through grooved rolls to reduce it to wire-like form, is then re-annealed in any preferred manner, as for example, byv the procedure above outlined and is then drawn through suitable dies, the
final or finishing die being constructed from g a diamond or other suitable jewel.
In accordance with my invention, the filament is composed solely of dense coherent metallic uranium having an extremely high fusing fi point and capable of great incandescent e ciency at a coinparatlvely low Watt rate per candle power, and free from perceptible disintegration at such efficiency.
Having fully described -my invention, what I claim is 1. A filament for incandescent lights composed of. drawn uranium in pure metallic state.
2. A filament for incandescent lights com- WILLIAM HUGHES.
Witnesses:
IDA L. CHERRER, IONA WAGNER.
US73703812A 1912-12-16 1912-12-16 Incandescent body for electric lamps. Expired - Lifetime US1106384A (en)

Priority Applications (1)

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US73703812A US1106384A (en) 1912-12-16 1912-12-16 Incandescent body for electric lamps.

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US73703812A US1106384A (en) 1912-12-16 1912-12-16 Incandescent body for electric lamps.

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US1106384A true US1106384A (en) 1914-08-11

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771357A (en) * 1944-07-27 1956-11-20 Wroughton Donald Method of melting metal powder in vacuo
US2787537A (en) * 1946-08-15 1957-04-02 Harley A Wilhelm Method of producing metal
US2830896A (en) * 1948-06-07 1958-04-15 Alan U Seybolt Uranium alloys
US2843477A (en) * 1953-12-03 1958-07-15 Du Pont Method of producing titanium
US2856340A (en) * 1945-06-15 1958-10-14 Eugene P Wigner Shaped fissionable metal bodies
US2890110A (en) * 1950-05-10 1959-06-09 Richard D Baker Production of plutonium from plutonium fluoride
US2897697A (en) * 1949-07-18 1959-08-04 Cyril S Smith Method of rolling uranium
US3175900A (en) * 1958-06-18 1965-03-30 Independence Foundation Process for the recovery of iron and uranium from slags, boiler waste and the like

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771357A (en) * 1944-07-27 1956-11-20 Wroughton Donald Method of melting metal powder in vacuo
US2856340A (en) * 1945-06-15 1958-10-14 Eugene P Wigner Shaped fissionable metal bodies
US2787537A (en) * 1946-08-15 1957-04-02 Harley A Wilhelm Method of producing metal
US2830896A (en) * 1948-06-07 1958-04-15 Alan U Seybolt Uranium alloys
US2897697A (en) * 1949-07-18 1959-08-04 Cyril S Smith Method of rolling uranium
US2890110A (en) * 1950-05-10 1959-06-09 Richard D Baker Production of plutonium from plutonium fluoride
US2843477A (en) * 1953-12-03 1958-07-15 Du Pont Method of producing titanium
US3175900A (en) * 1958-06-18 1965-03-30 Independence Foundation Process for the recovery of iron and uranium from slags, boiler waste and the like

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