GB556432A - Improvements in the manufacture of gramophone needles - Google Patents
Improvements in the manufacture of gramophone needlesInfo
- Publication number
- GB556432A GB556432A GB426342A GB426342A GB556432A GB 556432 A GB556432 A GB 556432A GB 426342 A GB426342 A GB 426342A GB 426342 A GB426342 A GB 426342A GB 556432 A GB556432 A GB 556432A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- regenerated cellulose
- monofil
- impregnation
- manufacture
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 3
- 239000004627 regenerated cellulose Substances 0.000 abstract 3
- 238000005470 impregnation Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 1
- 235000011114 ammonium hydroxide Nutrition 0.000 abstract 1
- 239000004202 carbamide Substances 0.000 abstract 1
- 239000007859 condensation product Substances 0.000 abstract 1
- 238000007865 diluting Methods 0.000 abstract 1
- 239000008098 formaldehyde solution Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 239000004753 textile Substances 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
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
556,432. Regenerated cellulose articles treating textiles &c. with liquids &c. COURTAULDS, Ltd., GIVENS, J. H., and PROCTOR, J. March 31, 1942, No. 4263. [Classes 2 (ii) and 15 (ii)] Gramophone needles are made of regenerated cellulose monofils, hardened with artificial resins. In an example, a regenerated cellulose monofil is swollen by steeping in water, and is then immersed in a solution of a formaldehydeurea condensation product for about 12 hours to ensure thorough impregnation. The impregnating solution may be obtained by mixing formaldehyde solution, urea, and ammonia solution, heating the mixture to 90‹C. for several minutes, diluting with cold water, and adjusting the hydrogen ion concentration to pH 4 by the addition of acetic acid. After the impregnation, the monofil is removed from the solution, dried at 40‹C., and stoved at 140‹C. to complete the hardening process. It is then cut into suitable lengths and one end of each is sharpened to a fine point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB426342A GB556432A (en) | 1942-03-31 | 1942-03-31 | Improvements in the manufacture of gramophone needles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB426342A GB556432A (en) | 1942-03-31 | 1942-03-31 | Improvements in the manufacture of gramophone needles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB556432A true GB556432A (en) | 1943-10-05 |
Family
ID=9773810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB426342A Expired GB556432A (en) | 1942-03-31 | 1942-03-31 | Improvements in the manufacture of gramophone needles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB556432A (en) |
-
1942
- 1942-03-31 GB GB426342A patent/GB556432A/en not_active Expired
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