US429535A - Achilles de khotinsky - Google Patents
Achilles de khotinsky Download PDFInfo
- Publication number
- US429535A US429535A US429535DA US429535A US 429535 A US429535 A US 429535A US 429535D A US429535D A US 429535DA US 429535 A US429535 A US 429535A
- Authority
- US
- United States
- Prior art keywords
- khotinsky
- acid
- threads
- achilles
- cellulose
- 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
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 20
- 229920002678 cellulose Polymers 0.000 description 14
- 239000001913 cellulose Substances 0.000 description 14
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 10
- 239000002253 acid Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- 239000004020 conductor Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-N HF Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000001117 sulphuric acid Substances 0.000 description 4
- 235000011149 sulphuric acid Nutrition 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000010000 carbonizing Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
- D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
- D01F9/16—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from products of vegetable origin or derivatives thereof, e.g. from cellulose acetate
Definitions
- the subject of my invention consists in a process for rendering natural cellulose en-' tirely void of structural constitution and for producting therefrom carbon conductors for electric incandescent lamps, which are superior to those heretofore made from cellulose.
- I employ threads of purified natural cellulosepreferablysuch as are made from cotton which has been freed from fatty matter and treated with muriatic or hydrofluoric acid, or both, in view of extracting all mineralsubstances. These th reads are steeped at the ordinary temperature in phosphoric acid having a specific gravity of about 1.70 and left therein about one minute. After having been taken out of the acid they are hung up in air which is as dry as possible, so that the phosphoric acid imbibed by the of moisture. The acid which is in excess drips off, while the portion remaining in the thread converts the same by acting progressively from the exterior to the interior into a translucent mass. For this conversion about twenty-four hours are required, so that its progress may conveniently be watched.
- threads in which the structural constitution Preferably awater until every trace of acid has been removed and dried. In view of making their surface smoother and their thickness more uniform they may then be passed through a draw-plate. Finally the threads are carbonized in known manner, and the conductors thus obtained are employed in incandescent lamps, as usual.
- I claim as my invention The process of producing carbon conductors for electric incandescent lamps, which consists in impregnating threads of purified natural cellulose at the ordinary temperature with phosphoric acid having a specific gravity of about 1.7 O, in leaving the same to the action of the acid in dry air until their structural constitution has disappeared, in removing the phosphoric acid by treatment with a liquid adapted to separate out said acid such as alcohol, ether, and distilled waterand in carbonizing the amorphous thread, substantially as described.
Description
' thread may not become diluted by attraction UNITED STATES PATENT OFFICE.
AGHILLES DE KHOTINSKY, OF GELNHAUSEN, PRUSSIA, GERMANY.
MANUFACTURE OF CARBON FILAMENTS.
SPECIFICATION forming part of Letters Patent No. 429,535, dated June 3, 1890.
Application filed February 3, 1890. Serial No. 389,082. (No model.)
To all whom it may concern.-
Be it known that I, ACHILLES DE KnormsKY, a subject of the Emperor of Russia, residing at Gelnhausen, Kingdom-of Prussia, Germany, have invented new and useful Improvements in the Manufacture of Carbon Conductors for Electric Incandescent Lamps, whereof the following is a specification.
The subject of my invention consists in a process for rendering natural cellulose en-' tirely void of structural constitution and for producting therefrom carbon conductors for electric incandescent lamps, which are superior to those heretofore made from cellulose. For this purpose I employ threads of purified natural cellulosepreferablysuch as are made from cotton which has been freed from fatty matter and treated with muriatic or hydrofluoric acid, or both, in view of extracting all mineralsubstances. These th reads are steeped at the ordinary temperature in phosphoric acid having a specific gravity of about 1.70 and left therein about one minute. After having been taken out of the acid they are hung up in air which is as dry as possible, so that the phosphoric acid imbibed by the of moisture. The acid which is in excess drips off, while the portion remaining in the thread converts the same by acting progressively from the exterior to the interior into a translucent mass. For this conversion about twenty-four hours are required, so that its progress may conveniently be watched. The
threads in which the structural constitution Preferably awater until every trace of acid has been removed and dried. In view of making their surface smoother and their thickness more uniform they may then be passed through a draw-plate. Finally the threads are carbonized in known manner, and the conductors thus obtained are employed in incandescent lamps, as usual.
I am aware that threads of natural fibrous cellulose have heretofore been treated with sulphuric acid in view of converting them into a structureless mass of gelatinous cellulose. The sulphuric acid, however, acts so rapidly on the fibrous cellulose that it is impossible to properly control the process, many threads becoming completely distroyed, while others are only superficially acted upon; but if phosphoric acid of the prescribed degree of concentration is employed at the ordinary temperature of the air the conversion of the fibers into gelatinous cellulose goes on slowly, so that its progress maybe accurately watched. The described process, therefore, presents the advantage of aifording means for easily obtaining threads of uniform quality.
I claim as my invention The process of producing carbon conductors for electric incandescent lamps, which consists in impregnating threads of purified natural cellulose at the ordinary temperature with phosphoric acid having a specific gravity of about 1.7 O, in leaving the same to the action of the acid in dry air until their structural constitution has disappeared, in removing the phosphoric acid by treatment with a liquid adapted to separate out said acidsuch as alcohol, ether, and distilled waterand in carbonizing the amorphous thread, substantially as described.
In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.v
AOHILLES DE KHOTINSKY.
Witnesses:
JEAN GRUND, ALVESTO P. HOGUE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US429535A true US429535A (en) | 1890-06-03 |
Family
ID=2498444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US429535D Expired - Lifetime US429535A (en) | Achilles de khotinsky |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US429535A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6027536A (en) * | 1996-02-14 | 2000-02-22 | Akzo Nobel N.V. | Method for the preparation of a material with high water and salt solutions absorbency |
-
0
- US US429535D patent/US429535A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6027536A (en) * | 1996-02-14 | 2000-02-22 | Akzo Nobel N.V. | Method for the preparation of a material with high water and salt solutions absorbency |
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