GB306157A - Improvements in and relating to styluses for sound reproducing machines - Google Patents
Improvements in and relating to styluses for sound reproducing machinesInfo
- Publication number
- GB306157A GB306157A GB5270/29A GB527029A GB306157A GB 306157 A GB306157 A GB 306157A GB 5270/29 A GB5270/29 A GB 5270/29A GB 527029 A GB527029 A GB 527029A GB 306157 A GB306157 A GB 306157A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tungsten
- carbon
- tip
- wire
- powdered
- 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
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 5
- 229910052799 carbon Inorganic materials 0.000 abstract 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 3
- 229910052721 tungsten Inorganic materials 0.000 abstract 3
- 239000010937 tungsten Substances 0.000 abstract 3
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 238000005245 sintering Methods 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 239000010941 cobalt Substances 0.000 abstract 1
- 229910017052 cobalt Inorganic materials 0.000 abstract 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract 1
- 229910003460 diamond Inorganic materials 0.000 abstract 1
- 239000010432 diamond Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 235000013312 flour Nutrition 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- MGRWKWACZDFZJT-UHFFFAOYSA-N molybdenum tungsten Chemical group [Mo].[W] MGRWKWACZDFZJT-UHFFFAOYSA-N 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000012254 powdered material Substances 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/44—Styli, e.g. sapphire, diamond
- G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
- G11B3/48—Needles
Landscapes
- Solid Thermionic Cathode (AREA)
Abstract
306,157. British Thomson-Houston Co., Ltd., (Assignees of Taylor, G. F.). Feb. 17, 1928, [Convention date]. Tools for reproducing.-A reproducing stylus is formed with a tip consisting mainly of an element of the tungsten-molybdenum group with an appreciable amount of carbon and preferably with an element of the iron group. The tip may be formed according to one method by mixing powdered tungsten, carbon and cobalt with an organic binder such as flour to which water and sodium hydroxide has been added and extruding to form a thin wire. The wire after drying is embedded in alumina powder in a graphite cylinder and fired at 1400‹ C. to effect sintering and furnish hard pieces which are ground to size finally with diamond dust. The tungsten and carbon may be replaced by tungsten carbide. In another method the powdered materials may be placed in a carbon mould and heated to sintering temperature whilst pressure is applied as described in Specifications 288,521 and 289,477, [both in Class 82 (i), Metals, Extracting &c.]. In this method one heating electrode may consist of a refractory element such as tungsten which is pressed into the powdered mixture and forms part of the resulting wire which is finally ground. The tip 8 may be silver soldered to a metal shank 9 as shown in Fig. 4.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US306157XA | 1928-02-17 | 1928-02-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB306157A true GB306157A (en) | 1930-05-16 |
Family
ID=21855074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5270/29A Expired GB306157A (en) | 1928-02-17 | 1929-02-16 | Improvements in and relating to styluses for sound reproducing machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB306157A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3216730A (en) * | 1960-11-21 | 1965-11-09 | Seishiro Ogura | Recording needle and method of making the same |
-
1929
- 1929-02-16 GB GB5270/29A patent/GB306157A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3216730A (en) * | 1960-11-21 | 1965-11-09 | Seishiro Ogura | Recording needle and method of making the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES275580A1 (en) | Improvements introduced in the manufacture of a material intended to provide a hard surface (Machine-translation by Google Translate, not legally binding) | |
| GB1406542A (en) | Electrically coneuctive composition and methods of preparation thereof | |
| US2014955A (en) | Method of making an abrasive tool | |
| GB306157A (en) | Improvements in and relating to styluses for sound reproducing machines | |
| GB349732A (en) | Improvements in and relating to abrading tools | |
| US1741256A (en) | Stylus for sound-reproducing machines | |
| GB1024793A (en) | Improvements in or relating to cutting tools | |
| US2022528A (en) | Apparatus for sintering refractory material | |
| GB547119A (en) | Improvements relating to sparking plugs for internal combustion engines | |
| GB288521A (en) | Improvements in or relating to hard metal compositions and methods of making the same | |
| GB394193A (en) | Improvements in or relating to cemented metal carbides | |
| US1895926A (en) | Method of forming diamond charged cutting tool bits | |
| GB289477A (en) | Improvements in and relating to hard metal compositions | |
| GB556716A (en) | Improvements in and relating to diamond tools | |
| GB386359A (en) | Improvements in or relating to the manufacture of cemented carbide discs | |
| GB401521A (en) | A process for producing pressed shaped pieces of hard metal | |
| US1895364A (en) | Method for salvaging and resintering cemented carbides | |
| DE615836C (en) | Speaking machine needle made from a sintered tungsten alloy | |
| GB360709A (en) | Improvements in or relating to hard metal compositions | |
| GB379047A (en) | Improvements relating to built-up metal cutting and other tools or implements and toprocesses and apparatus for their manufacture | |
| SU77333A1 (en) | Method of making tools | |
| GB539945A (en) | Improvements relating to spark plugs | |
| GB436430A (en) | Improvements in and relating to the manufacture of abrasive wheels | |
| GB1483638A (en) | Method of making superhard articles | |
| GB589774A (en) | Improvements in or relating to composite metal articles and methods of making the same |