GB305031A - Tube shaped armature for electrical sound boxes - Google Patents

Tube shaped armature for electrical sound boxes

Info

Publication number
GB305031A
GB305031A GB2794/29A GB279429A GB305031A GB 305031 A GB305031 A GB 305031A GB 2794/29 A GB2794/29 A GB 2794/29A GB 279429 A GB279429 A GB 279429A GB 305031 A GB305031 A GB 305031A
Authority
GB
United Kingdom
Prior art keywords
armature
tube shaped
sound boxes
shaped armature
electrical sound
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
GB2794/29A
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.)
Loewe Radio AG
Original Assignee
Loewe Radio 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 Loewe Radio AG filed Critical Loewe Radio AG
Publication of GB305031A publication Critical patent/GB305031A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

305,031. Loewe-Radio Ges. Jan. 27, 1928, [Convention date]. Gramophone pick-ups. - The vibrating armature of a pick-up is a tube of ferro-magnetic material a, Fig. 2, rotatably arranged round pin b. screws e serving to fix the needle f inside the armature. Rubber tubes c provide the damping. Fig. 4 shows forms which the armature may take, which include seamless or welded tubes and those of U or V-shaped cross-section.
GB2794/29A 1928-01-27 1929-01-28 Tube shaped armature for electrical sound boxes Expired GB305031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE305031X 1928-01-27

Publications (1)

Publication Number Publication Date
GB305031A true GB305031A (en) 1930-06-30

Family

ID=6120665

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2794/29A Expired GB305031A (en) 1928-01-27 1929-01-28 Tube shaped armature for electrical sound boxes

Country Status (1)

Country Link
GB (1) GB305031A (en)

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