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GB557117A - Improvements relating to tools for recording or reproducing sound - Google Patents

Improvements relating to tools for recording or reproducing sound

Info

Publication number
GB557117A
GB557117A GB855342A GB855342A GB557117A GB 557117 A GB557117 A GB 557117A GB 855342 A GB855342 A GB 855342A GB 855342 A GB855342 A GB 855342A GB 557117 A GB557117 A GB 557117A
Authority
GB
United Kingdom
Prior art keywords
silver
per cent
recording
palladium
alloy
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
GB855342A
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 GB855342A priority Critical patent/GB557117A/en
Publication of GB557117A publication Critical patent/GB557117A/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
    • 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

Landscapes

  • Chemically Coating (AREA)

Abstract

557,117. Silver alloys. FADOVA, H. June 22, 1942, No. 8553. Drawings to Specification. [Class 82 (i)] [Also in Group XXXVIII] A recording or reproducing needle for gramophones is made with a shank of an alloy having silver and palladium as its main constituents and also containing copper and nickel and with a tip or coating of harder material such as iridium, osmium, rhodium, or an alloy of two or more of these metals. The silver-palladium alloy may be as described in Specification 541,439 and preferably comprises 77 per cent. silver, 20 per cent. palladium, 2 per cent. copper, and 1 per cent. nickel. The tip may be secured by electric resistance welding or by soldering with a hard solder. The coating may be applied by electro-plating.
GB855342A 1942-06-22 1942-06-22 Improvements relating to tools for recording or reproducing sound Expired GB557117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB855342A GB557117A (en) 1942-06-22 1942-06-22 Improvements relating to tools for recording or reproducing sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB855342A GB557117A (en) 1942-06-22 1942-06-22 Improvements relating to tools for recording or reproducing sound

Publications (1)

Publication Number Publication Date
GB557117A true GB557117A (en) 1943-11-04

Family

ID=9854672

Family Applications (1)

Application Number Title Priority Date Filing Date
GB855342A Expired GB557117A (en) 1942-06-22 1942-06-22 Improvements relating to tools for recording or reproducing sound

Country Status (1)

Country Link
GB (1) GB557117A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216730A (en) * 1960-11-21 1965-11-09 Seishiro Ogura Recording needle and method of making the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216730A (en) * 1960-11-21 1965-11-09 Seishiro Ogura Recording needle and method of making the same

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