US2148225A - Sound record disk - Google Patents

Sound record disk Download PDF

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Publication number
US2148225A
US2148225A US89641A US8964136A US2148225A US 2148225 A US2148225 A US 2148225A US 89641 A US89641 A US 89641A US 8964136 A US8964136 A US 8964136A US 2148225 A US2148225 A US 2148225A
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United States
Prior art keywords
record disk
sound record
sound
disk
recording
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Expired - Lifetime
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US89641A
Inventor
Zecha Otto
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Individual
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Individual
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Publication of US2148225A publication Critical patent/US2148225A/en
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    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree

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Description

Feb. 21, 1939.
o. ZECHA 2,148,225
SOUND RECORD DISK Filed July s, 1956 //v we)? ecu L7 p Patented Feb. 21, 1939 PATENT OFFICE 2,148,225 SOUND RECORD DISK Otto Zecha, Vienna, Austria Application July 8, 1936; Serial In Austria. September 17,
No. 89,641 1935 I 1 Claim. (Cl. 274-42) This invention relates to improvements in sound records.
When cutting sound record disks or the like while a sound groove which is too deep prevents the recording of the fine over- I To a foundation base for example of red colour there are anobteining satisfactory recording.
A. sectional view ofa record disk comprising layers.
What I claim isdisk for phonographic recording comprising A at least two superposed layers of difierent coloured
US89641A 1935-09-17 1936-07-08 Sound record disk Expired - Lifetime US2148225A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT2148225X 1935-09-17

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US2148225A true US2148225A (en) 1939-02-21

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ID=3689968

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US89641A Expired - Lifetime US2148225A (en) 1935-09-17 1936-07-08 Sound record disk

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563119A (en) * 1948-03-03 1951-08-07 Otis Pressure Control Inc Recorder chart for oil or gas well recording instruments
US3265396A (en) * 1963-02-12 1966-08-09 Gorman Harry Laminated paper records

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563119A (en) * 1948-03-03 1951-08-07 Otis Pressure Control Inc Recorder chart for oil or gas well recording instruments
US3265396A (en) * 1963-02-12 1966-08-09 Gorman Harry Laminated paper records

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