GB333755A - Improvements relating to the manifolding of phonograms of magnetic material - Google Patents

Improvements relating to the manifolding of phonograms of magnetic material

Info

Publication number
GB333755A
GB333755A GB2613529A GB2613529A GB333755A GB 333755 A GB333755 A GB 333755A GB 2613529 A GB2613529 A GB 2613529A GB 2613529 A GB2613529 A GB 2613529A GB 333755 A GB333755 A GB 333755A
Authority
GB
United Kingdom
Prior art keywords
tape
master
magnetic material
phonogram
magnet
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
GB2613529A
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 GB2613529A priority Critical patent/GB333755A/en
Publication of GB333755A publication Critical patent/GB333755A/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
    • G11B5/86—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers
    • G11B5/865—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers by contact "printing"

Abstract

333,755. Pollock, A. F., and Pollock, D. A. Aug. 28, 1929. Records, magnetic and electromagnetic; duplicating.-Magnetic material, constituting a phonogram. is drawn magnetically from a master tape or surface b to which it has been applied on to another tape or surface c. The master tape b, carrying the phonogram on its undersurface, is drawn over the north pole N of a magnet NS which is disposed flush with the surface of a non-magnetic table top a. A paper or other non-magnetic tape c, coated on its upper face with an adhesive, is interposed between the phonogram and the magnet NS and travels conjointly with the master tape b. The master tape b isdiverted around a roller d away from the magnet. The tape c is subsequently diverted from the magnet by a roller e, and between the rollers d, e another paper tape f is diverted by a roller g on to the tape c so as to constitute a protective covering for the transferred phonogram. The. master' tape may be of copper or other non-magnetic material having the magnetic material filled into etched recesses representing the sound characteristics, and such master record may be used repeatedly by refilling the recesses with magnetic material after each transfer operation. Alternatively, the magnetic material may be applied to the master tape in thicknesses varying according to the sound characteristics. The Provisional Specification describes also the use of a horseshoe magnet for transferring the phonogram from the master tape.
GB2613529A 1929-08-28 1929-08-28 Improvements relating to the manifolding of phonograms of magnetic material Expired GB333755A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2613529A GB333755A (en) 1929-08-28 1929-08-28 Improvements relating to the manifolding of phonograms of magnetic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2613529A GB333755A (en) 1929-08-28 1929-08-28 Improvements relating to the manifolding of phonograms of magnetic material

Publications (1)

Publication Number Publication Date
GB333755A true GB333755A (en) 1930-08-21

Family

ID=10238929

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2613529A Expired GB333755A (en) 1929-08-28 1929-08-28 Improvements relating to the manifolding of phonograms of magnetic material

Country Status (1)

Country Link
GB (1) GB333755A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657932A (en) * 1949-04-16 1953-11-03 Rca Corp Combination photographic and magnetic sound record and method for producing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657932A (en) * 1949-04-16 1953-11-03 Rca Corp Combination photographic and magnetic sound record and method for producing same

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