GB309115A - Improvements in and relating to loud speakers - Google Patents

Improvements in and relating to loud speakers

Info

Publication number
GB309115A
GB309115A GB24770/28A GB2477028A GB309115A GB 309115 A GB309115 A GB 309115A GB 24770/28 A GB24770/28 A GB 24770/28A GB 2477028 A GB2477028 A GB 2477028A GB 309115 A GB309115 A GB 309115A
Authority
GB
United Kingdom
Prior art keywords
arm
screw
fixes
base plate
yielding point
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
GB24770/28A
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.)
IDEAL WERKE AG fur DRAHTLOSE T
Original Assignee
IDEAL WERKE AG fur DRAHTLOSE T
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 IDEAL WERKE AG fur DRAHTLOSE T filed Critical IDEAL WERKE AG fur DRAHTLOSE T
Publication of GB309115A publication Critical patent/GB309115A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

309,115. Ideal Werke Akt.-Ges. fiir Drahtlose Telephonic. April 5, 1928, [Convention date]. Magnetic instruments. -In means for adjusting the distance betweem the armature and the magnet poles, arm l, Fig. 3, connected by a stirrup e to the pin d, which actuates the diaphragm, and having a cut-away portion i forming a pivot for vibration, has also between the portion i and a screw h, which fixes the arm to the base plate p, an elastic yielding point z so that the arm can be adjusted by means of a screw i, under pressure of a spring u. The arm is shown separately in Fig. 6. The yielding point z is formed by cutting a recess o. The upper fork n is provided with a threaded aperture r for the screw t and with an opening q to accommodate the head of the screw h which fixes the lower fork m to the base plate.
GB24770/28A 1928-04-05 1928-08-28 Improvements in and relating to loud speakers Expired GB309115A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE309115X 1928-04-05

Publications (1)

Publication Number Publication Date
GB309115A true GB309115A (en) 1929-06-06

Family

ID=6121926

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24770/28A Expired GB309115A (en) 1928-04-05 1928-08-28 Improvements in and relating to loud speakers

Country Status (2)

Country Link
FR (1) FR671926A (en)
GB (1) GB309115A (en)

Also Published As

Publication number Publication date
FR671926A (en) 1929-12-20

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