US2094098A - Sound record - Google Patents
Sound record Download PDFInfo
- Publication number
- US2094098A US2094098A US594148A US59414832A US2094098A US 2094098 A US2094098 A US 2094098A US 594148 A US594148 A US 594148A US 59414832 A US59414832 A US 59414832A US 2094098 A US2094098 A US 2094098A
- Authority
- US
- United States
- Prior art keywords
- sound
- cellulose
- records
- record
- sound record
- 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
- 239000000463 material Substances 0.000 description 12
- 229920002678 cellulose Polymers 0.000 description 11
- 239000001913 cellulose Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 9
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 229920001169 thermoplastic Polymers 0.000 description 4
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- 229920002301 cellulose acetate Polymers 0.000 description 3
- 235000013773 glyceryl triacetate Nutrition 0.000 description 3
- 239000001087 glyceryl triacetate Substances 0.000 description 3
- HNQIVZYLYMDVSB-UHFFFAOYSA-N methanesulfonimidic acid Chemical compound CS(N)(=O)=O HNQIVZYLYMDVSB-UHFFFAOYSA-N 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000012815 thermoplastic material Substances 0.000 description 3
- 229960002622 triacetin Drugs 0.000 description 3
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 3
- 239000008096 xylene Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000004902 Softening Agent Substances 0.000 description 2
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- DQEFEBPAPFSJLV-UHFFFAOYSA-N Cellulose propionate Chemical compound CCC(=O)OCC1OC(OC(=O)CC)C(OC(=O)CC)C(OC(=O)CC)C1OC1C(OC(=O)CC)C(OC(=O)CC)C(OC(=O)CC)C(COC(=O)CC)O1 DQEFEBPAPFSJLV-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 1
- 229920001800 Shellac Polymers 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 229920001727 cellulose butyrate Polymers 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 229920006218 cellulose propionate Polymers 0.000 description 1
- 239000011928 denatured alcohol Substances 0.000 description 1
- YSAVZVORKRDODB-WDSKDSINSA-N diethyl tartrate Chemical compound CCOC(=O)[C@@H](O)[C@H](O)C(=O)OCC YSAVZVORKRDODB-WDSKDSINSA-N 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 239000001761 ethyl methyl cellulose Substances 0.000 description 1
- 235000010944 ethyl methyl cellulose Nutrition 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 150000002895 organic esters Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004208 shellac Substances 0.000 description 1
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 description 1
- 229940113147 shellac Drugs 0.000 description 1
- 235000013874 shellac Nutrition 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 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
- G11B3/68—Record carriers
- G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers
Definitions
- This invention relates to records for recording or reproducing sound and relates more particu- 5 larly to such reproducing records as are employed with sound amplifying devices.
- An object of my invention is to prepare sound records from which tones of purer quality than has heretofore been possible may be produced.
- the organic derivative of cellulose employed in making the thermoplastic material may be of lose acetate, cellulose formate, cellulose propionate and cellulose butyrate while examples of cellulose ethers are ethyl cellulose, methyl cellulose and benzyl cellulose.
- the plastifier or softening agent any suitable one may be employed, examples of which are xylene monomethyl sulfonamid, triacetin, triphenyl phosphate, dlbutyl tartrate, diethyl tartrate, diethyl phthalate, etc.
- the proportions of plastifier employed generally I have found that amounts varying from 35 to 60%, preferably 40%, of the weight of the organic derivative of cellulose present produce excellent results.
- thermoplastic composition should be free of hard filling materials. While I prefer Examples of organic esters of cellulose are celluto employ no filling materials at all, if it is desired to reduce the cost of the product, a soft or lubricating filler such as talc, not to exceed 25% of the weight of the plastic material, may be employed. To impart color, a suitable dye 5 such as nigrosin may be added, but hard pigments are to be avoided.
- the thermoplastic material may be made in any desired manner. I prefer to make a plastic mass by gelatinizing the organic derivative of cellulose 10 and a plastifier and any other permitted ingredient with a volatile solvent such as acetone, alcohol or benzene, working the mass on heated malaxating rolls to remove excess solvent, and then forming sheets from the mass. The sheets 15 so formed may be cut into discs corresponding to the size of the record desired, and these discs are then pressed between the sound matrices at elevated temperatures to form the finished record.
- a volatile solvent such as acetone, alcohol or benzene
- thermoplastic material may be made in the form of powder by finely dividing the plastic material formed by the gelatinization of the ingredients by a solvent and removing the sol vent, or such powder may be formed by finely 25 grinding the dry derivative of cellulose and the plastlfier, with or without other permitted ingredients. These powders may be molded under heat and pressure between the sound matrices to produce the sound record.
- the whole sound record need not be made wholly of the thermoplastic composition, but the interiors may be made of cheaper material such as plastics, laminated paper or fabric and the like, which may be inserted as cores with- 35 in the plastic composition.
- Sound records produced in accordance with the invention reproduce clear sounds free of distortions and extraneous noises. While-the volume of sound reproduced from such records by the ordinary mechanical graphophone is not as loud as those produced from records made in accordance with the prior art, such sound may be readily amplified by electrical or other desired means to any desired extent and such amplified sound is pleasing to the ear.
- Example A plastic composition is made by mixing the following ingredients:
- the plastic mass is worked on heated rolls to form sheets, these sheets are then sition which is free from hard material and contains an organic derivative of cellulose and a plasticizer in an amount of from 35 to 60% of the organic derivative of cellulose present.
- a sound record having a reproducing surface made of a non-resinous thermoplastic composition which is free from hard material and contains cellulose acetate and a plasticizer, comprising a mixture of xylene monomethyl sulfonamid, triphenyl phosphate and triacetin, in an amount of substantially 40% of the weight of the cellulose acetate present.
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
Patented Sept. 28, 1937 UNITED STATES PATENT OFFICE No Drawing.
Original application October 5,
1929, Serial No. 397,758. Divided and this application February 19, 1932, Serial No. 594,148. In Canada September 18, 1930 2 Claims.
This application is a division of my applica tion, Serial No. 397,758, filed October 5, 1929.
This invention relates to records for recording or reproducing sound and relates more particu- 5 larly to such reproducing records as are employed with sound amplifying devices.
An object of my invention is to prepare sound records from which tones of purer quality than has heretofore been possible may be produced.
Further objects of my invention will appear from the following detailed description.
Sound reproducing records have heretofore been made of materials containing resins such as shellac and hard filling materials such as silicon,
iron oxide and the like. Such records are open to the objection that they emit harsh tones due to the presence of these materials. When sound reproduced from such records is amplified, the harshness and scratchy sounds are accentuated and the result is altogether displeasing to the ear.
I have found that if sound records are made of athermoplastic composition containing organic derivatives of cellulose and a suitable plastifier or softening agent, which composition does not 2 contain the hard filling material heretofore employed in sound records, the sound reproduced from such records is clear and free of distortions and scratchy noises, and is substantially exactly the same as the original sound that is intended to be reproduced.
In accordance with my invention I prepare sound records, the reproducing surface of which is composed of a thermoplastic composition containing an organic derivative of cellulose and a suitable plastifier in suitable proportions and which is free of hard filling material.
The organic derivative of cellulose employed in making the thermoplastic material may be of lose acetate, cellulose formate, cellulose propionate and cellulose butyrate while examples of cellulose ethers are ethyl cellulose, methyl cellulose and benzyl cellulose. As to the plastifier or softening agent, any suitable one may be employed, examples of which are xylene monomethyl sulfonamid, triacetin, triphenyl phosphate, dlbutyl tartrate, diethyl tartrate, diethyl phthalate, etc. As to the proportions of plastifier employed, generally I have found that amounts varying from 35 to 60%, preferably 40%, of the weight of the organic derivative of cellulose present produce excellent results.
As stated the thermoplastic composition should be free of hard filling materials. While I prefer Examples of organic esters of cellulose are celluto employ no filling materials at all, if it is desired to reduce the cost of the product, a soft or lubricating filler such as talc, not to exceed 25% of the weight of the plastic material, may be employed. To impart color, a suitable dye 5 such as nigrosin may be added, but hard pigments are to be avoided.
The thermoplastic material may be made in any desired manner. I prefer to make a plastic mass by gelatinizing the organic derivative of cellulose 10 and a plastifier and any other permitted ingredient with a volatile solvent such as acetone, alcohol or benzene, working the mass on heated malaxating rolls to remove excess solvent, and then forming sheets from the mass. The sheets 15 so formed may be cut into discs corresponding to the size of the record desired, and these discs are then pressed between the sound matrices at elevated temperatures to form the finished record. 7 20 If desired the thermoplastic material may be made in the form of powder by finely dividing the plastic material formed by the gelatinization of the ingredients by a solvent and removing the sol vent, or such powder may be formed by finely 25 grinding the dry derivative of cellulose and the plastlfier, with or without other permitted ingredients. These powders may be molded under heat and pressure between the sound matrices to produce the sound record.
If desired the whole sound record need not be made wholly of the thermoplastic composition, but the interiors may be made of cheaper material such as plastics, laminated paper or fabric and the like, which may be inserted as cores with- 35 in the plastic composition.
Sound records produced in accordance with the invention reproduce clear sounds free of distortions and extraneous noises. While-the volume of sound reproduced from such records by the ordinary mechanical graphophone is not as loud as those produced from records made in accordance with the prior art, such sound may be readily amplified by electrical or other desired means to any desired extent and such amplified sound is pleasing to the ear.
Because of the excellent quality of the sound reproduced therefrom, records made in accordance with this invention are eminently suited for reproducing sound that is to be greatly amplified as in public halls and theatres, and are therefore of great utility in this connection. An important application of this invention is in connection with making sound records to be used in sound reproducing apparatus synchronously combined with cinematographic apparatus to produce socalled sound motion pictures. In order further to illustrate this invention but without being limited thereto, the following specific example is given. 1
Example A plastic composition is made by mixing the following ingredients:
. Parts by weight Cellulose acetate 100 Xylene monomethyl sulfonamid 17.2 Triphenyl phosphate 11.4 Triacetin 11.4 Benzol for the ethyl alcohol denatured with methyl alcohol 40 The ingredients are thoroughly mixed at elevated temperatures whereupon a gelatinous mass is produced, and then this gelatinous mass is worked on heated malaxating rolls to drive out the volatile solvents which are the benzol and the denatured alcohol. The mass may be worked on the rolls until hard slabs are formed and these slabs are then seasoned. The seasoned slabs are then cut into discs which may be molded between sound matrices to form the finished record.
As a variation the plastic mass is worked on heated rolls to form sheets, these sheets are then sition which is free from hard material and contains an organic derivative of cellulose and a plasticizer in an amount of from 35 to 60% of the organic derivative of cellulose present.
2. A sound record having a reproducing surface made of a non-resinous thermoplastic composition which is free from hard material and contains cellulose acetate and a plasticizer, comprising a mixture of xylene monomethyl sulfonamid, triphenyl phosphate and triacetin, in an amount of substantially 40% of the weight of the cellulose acetate present.
CAMILLE DREYFUS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US594148A US2094098A (en) | 1929-10-05 | 1932-02-19 | Sound record |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US39775829A | 1929-10-05 | 1929-10-05 | |
| US594148A US2094098A (en) | 1929-10-05 | 1932-02-19 | Sound record |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2094098A true US2094098A (en) | 1937-09-28 |
Family
ID=27015991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US594148A Expired - Lifetime US2094098A (en) | 1929-10-05 | 1932-02-19 | Sound record |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2094098A (en) |
-
1932
- 1932-02-19 US US594148A patent/US2094098A/en not_active Expired - Lifetime
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