GB190825443A - Process for the Avoidance of Hollow Spaces in the Production of Incandescence Filaments for Electric Incandescence Lamps from Colloidal Filaments. - Google Patents

Process for the Avoidance of Hollow Spaces in the Production of Incandescence Filaments for Electric Incandescence Lamps from Colloidal Filaments.

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Publication number
GB190825443A
GB190825443A GB190825443DA GB190825443A GB 190825443 A GB190825443 A GB 190825443A GB 190825443D A GB190825443D A GB 190825443DA GB 190825443 A GB190825443 A GB 190825443A
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GB
United Kingdom
Prior art keywords
filaments
incandescence
colloidal
avoidance
production
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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
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Inventor
Hans Kuzel
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Individual
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Individual
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Publication date
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Publication of GB190825443A publication Critical patent/GB190825443A/en
Expired legal-status Critical Current

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Abstract

25,443. Kuzel, H. Oct 15, [date applied for under Section 91 of Patents &c. Act, 1907]. Colloidal metals and metalloids, converting into cystalloids by heating. Colloidal filaments for electric lamps are heated in gas at a pressure not exceeding 150 mm., to prevent the formation of cavities or bubbles in the finished filaments. The heating may take place in a stream of nitrogen, mixed with some hydrogen to render harmless any small amount of air which may leak into the apparatus, at a pressure of about 30 mm., which is increased to 40 mm. when the filaments are heated to whiteness. Preferably the filaments are stretched, by weights, springs, or other means. The process is applicable to filaments made as described in Specifications No. 28,154, A D. 1904, and No. 20,372, A.D. 1907, [Abridgment Class Electric lamps &c.], especially when the colloids are made as described in Specification No. 25,864, A.D. 1906, any electrolytes present being vaporized without leaving cavities in the filaments.
GB190825443D 1908-10-15 1908-11-25 Process for the Avoidance of Hollow Spaces in the Production of Incandescence Filaments for Electric Incandescence Lamps from Colloidal Filaments. Expired GB190825443A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE190825443X 1908-10-15

Publications (1)

Publication Number Publication Date
GB190825443A true GB190825443A (en) 1909-04-29

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ID=32478827

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190825443D Expired GB190825443A (en) 1908-10-15 1908-11-25 Process for the Avoidance of Hollow Spaces in the Production of Incandescence Filaments for Electric Incandescence Lamps from Colloidal Filaments.

Country Status (1)

Country Link
GB (1) GB190825443A (en)

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