GB324099A - Improvements in magnetic sound records - Google Patents

Improvements in magnetic sound records

Info

Publication number
GB324099A
GB324099A GB2997028A GB2997028A GB324099A GB 324099 A GB324099 A GB 324099A GB 2997028 A GB2997028 A GB 2997028A GB 2997028 A GB2997028 A GB 2997028A GB 324099 A GB324099 A GB 324099A
Authority
GB
United Kingdom
Prior art keywords
track
base
sound
magnetic
matrix
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
Application number
GB2997028A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB2997028A priority Critical patent/GB324099A/en
Publication of GB324099A publication Critical patent/GB324099A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/633—Record carriers characterised by the selection of the material of cinematographic films or slides with integral magnetic track
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer

Landscapes

  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

324,099. McClelland, T. Oct. 17, 1928. Records, magnetic; materials for; sound traces; records, combined phonograph and kinematograph.-Magnetic sound records comprise a track adapted to be magnetized in accordance with the sounds to be recorded and consisting of a substantially continuous belt of discrete particles embedded or enclosed in a matrix carried by or in a suitable carrier base. The base may be in the form of a ribbon or film of celluloid or metal, and the track may consist of steel filings or powder embedded in a matrix of celluloid or coliodion. The sound track may be affixed by pressing the moving base against a roller which is partially immersed in the matrix containing the magnetic particles, the sound track being forced to a certain extent into the base. Another method of attaching the track is to spray the matrix containing steel powder &c. on to the base. In another form, the base may be a ribbon of textile material which is impregnated with the matrix containing the magnetic element. The record may also be formed by blowing magnetic powder into the interior of a tube of textile material, applying celluloid solution, and flattening the tube. If desired, a plurality of parallel tracks may be applied to either or both of the faces of the base, and such tracks may be used either successively for recording lengthy matters on a strip by a lateral displacement at each end of the strip and continuation in the reverse direction on the next track, or so that each track may represent the simultaneous but separate record of different portions of an orchestral &c. rendering. In connection with combined sound and picture films, the magnetizable track and matrix are carried by the film. The Provisional Specification describes also the use of a metallic wire or a solution of iron as the magnetizable element.
GB2997028A 1928-10-17 1928-10-17 Improvements in magnetic sound records Expired GB324099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2997028A GB324099A (en) 1928-10-17 1928-10-17 Improvements in magnetic sound records

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2997028A GB324099A (en) 1928-10-17 1928-10-17 Improvements in magnetic sound records

Publications (1)

Publication Number Publication Date
GB324099A true GB324099A (en) 1930-01-17

Family

ID=10300148

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2997028A Expired GB324099A (en) 1928-10-17 1928-10-17 Improvements in magnetic sound records

Country Status (1)

Country Link
GB (1) GB324099A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582590A (en) * 1946-08-15 1952-01-15 Armour Res Found Method of making magnetic material
US2628929A (en) * 1949-07-15 1953-02-17 Minnesota Mining & Mfg Method and apparatus for transferring a magnetic sound track to movie film
US2643130A (en) * 1949-11-02 1953-06-23 Brush Dev Co Multilayer magnetic record member
US2686676A (en) * 1949-04-08 1954-08-17 Dictaphone Corp Recording progress indicator for magnetic records
US2699408A (en) * 1950-03-24 1955-01-11 Armour Res Found Magnetic record member
US2756394A (en) * 1953-07-14 1956-07-24 Hackethal Draht & Kabelwerk Ag Delay cables
DE1019555B (en) * 1952-12-12 1957-11-14 Siemens Ag Process for the production of picture tone films
US2879176A (en) * 1950-12-09 1959-03-24 Reeves Soundcraft Corp Method of applying a magnetic sound track stripe to a film
US2909118A (en) * 1956-01-05 1959-10-20 Warren S D Co Magnetically imageable planographic plate
US3161544A (en) * 1960-06-14 1964-12-15 Gen Electric Recording and portraying apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582590A (en) * 1946-08-15 1952-01-15 Armour Res Found Method of making magnetic material
US2686676A (en) * 1949-04-08 1954-08-17 Dictaphone Corp Recording progress indicator for magnetic records
US2628929A (en) * 1949-07-15 1953-02-17 Minnesota Mining & Mfg Method and apparatus for transferring a magnetic sound track to movie film
US2643130A (en) * 1949-11-02 1953-06-23 Brush Dev Co Multilayer magnetic record member
US2699408A (en) * 1950-03-24 1955-01-11 Armour Res Found Magnetic record member
US2879176A (en) * 1950-12-09 1959-03-24 Reeves Soundcraft Corp Method of applying a magnetic sound track stripe to a film
DE1019555B (en) * 1952-12-12 1957-11-14 Siemens Ag Process for the production of picture tone films
US2756394A (en) * 1953-07-14 1956-07-24 Hackethal Draht & Kabelwerk Ag Delay cables
US2909118A (en) * 1956-01-05 1959-10-20 Warren S D Co Magnetically imageable planographic plate
US3161544A (en) * 1960-06-14 1964-12-15 Gen Electric Recording and portraying apparatus

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