GB193026A - Improvements in sound boxes for talking machines and the like - Google Patents

Improvements in sound boxes for talking machines and the like

Info

Publication number
GB193026A
GB193026A GB2804/23A GB280423A GB193026A GB 193026 A GB193026 A GB 193026A GB 2804/23 A GB2804/23 A GB 2804/23A GB 280423 A GB280423 A GB 280423A GB 193026 A GB193026 A GB 193026A
Authority
GB
United Kingdom
Prior art keywords
sound
knife
centres
knifeedges
row
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
GB2804/23A
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.)
POLYPHONWERKE AG
Original Assignee
POLYPHONWERKE AG
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 POLYPHONWERKE AG filed Critical POLYPHONWERKE AG
Publication of GB193026A publication Critical patent/GB193026A/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
    • G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank

Landscapes

  • Sewing Machines And Sewing (AREA)
  • Telephone Set Structure (AREA)

Abstract

193,026. Polyphonwerke Akt.-Ges. Feb. 9, 1922, [Convention date]. Tool-arm mountings.-Relates to sound-boxes of the kind in which a transverse member p connected to the tool-arm n is mounted between two rows of knife-edges or centres, one row k being fixed to the sound-box casing and the other row m being arranged on a, spring-controlled member which presses the member p against the knifeedges or centres on the casing. According to the invention, the ends of all the knife-edges or centres lie in a single straight line. In the construction shown, the plate d carrying the knifeedges m is pressed upwardly by springs f<1>. One knife-edge m and one centre k may be mounted on the plate and on the sound-box casing respectively, instead of the arrangement shown.
GB2804/23A 1922-02-09 1923-01-30 Improvements in sound boxes for talking machines and the like Expired GB193026A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE193026X 1922-02-09

Publications (1)

Publication Number Publication Date
GB193026A true GB193026A (en) 1923-10-04

Family

ID=5737005

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2804/23A Expired GB193026A (en) 1922-02-09 1923-01-30 Improvements in sound boxes for talking machines and the like

Country Status (3)

Country Link
AT (1) AT93412B (en)
CH (1) CH101443A (en)
GB (1) GB193026A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808557A (en) * 1971-05-21 1974-04-30 V Smiley High-sensitivity laser acoustic detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808557A (en) * 1971-05-21 1974-04-30 V Smiley High-sensitivity laser acoustic detector

Also Published As

Publication number Publication date
CH101443A (en) 1923-09-17
AT93412B (en) 1923-07-10

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