GB637181A - Improvements in or relating to phonographic transducer - Google Patents

Improvements in or relating to phonographic transducer

Info

Publication number
GB637181A
GB637181A GB6999/47A GB699947A GB637181A GB 637181 A GB637181 A GB 637181A GB 6999/47 A GB6999/47 A GB 6999/47A GB 699947 A GB699947 A GB 699947A GB 637181 A GB637181 A GB 637181A
Authority
GB
United Kingdom
Prior art keywords
spring
phonographic
transducer
relating
group xxxviii
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
GB6999/47A
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.)
SOUND SCRIBER CORP
Original Assignee
SOUND SCRIBER CORP
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 SOUND SCRIBER CORP filed Critical SOUND SCRIBER CORP
Publication of GB637181A publication Critical patent/GB637181A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus

Abstract

637,181. Electromagnets. SOUNDSCRIBER CORPORATION. March 13, 1947, No. 6999. Convention date, April 21, 1944. [Class 35] [Also in Group XXXVIII] A dictating machine (see Group XXXVIII) comprises an electromagnet with a composite armature, one part 74 being pivoted on a light spring 77 secured to a non-magnetic member 70 pivoted on a strong spring 68 to the bracket 65 of the magnet, whereby energization of the magnet first rocks the part 74 about the spring 77 and then moves the parts 74 and 70 bodily about the spring 68. Specifications 558,552 and 629,193, [both in Group XXXVIII], are referred to.
GB6999/47A 1944-04-21 1947-03-13 Improvements in or relating to phonographic transducer Expired GB637181A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US637181XA 1944-04-21 1944-04-21

Publications (1)

Publication Number Publication Date
GB637181A true GB637181A (en) 1950-05-17

Family

ID=22051033

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6999/47A Expired GB637181A (en) 1944-04-21 1947-03-13 Improvements in or relating to phonographic transducer

Country Status (1)

Country Link
GB (1) GB637181A (en)

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