GB268257A - Improvements in sound-boxes for gramophones and the like - Google Patents

Improvements in sound-boxes for gramophones and the like

Info

Publication number
GB268257A
GB268257A GB30918/26A GB3091826A GB268257A GB 268257 A GB268257 A GB 268257A GB 30918/26 A GB30918/26 A GB 30918/26A GB 3091826 A GB3091826 A GB 3091826A GB 268257 A GB268257 A GB 268257A
Authority
GB
United Kingdom
Prior art keywords
sound
gasket
box
stylus
secured
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
GB30918/26A
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.)
COLUMBIA GRAPHOPHONE CO Ltd
Original Assignee
COLUMBIA GRAPHOPHONE CO Ltd
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 COLUMBIA GRAPHOPHONE CO Ltd filed Critical COLUMBIA GRAPHOPHONE CO Ltd
Publication of GB268257A publication Critical patent/GB268257A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

268,257. Columbia Graphophone Co., Ltd., (Assignees of Hinckley, F. C.). June 12, 1926, [Convention date]. Sound-box casings. - Relates to soundboxes for gramophones or the like, of the kind adapted to be resiliently mounted upon the tone-arm, and consists in a mounting comprising a pair of shallow cuplike members 18. 28 one of which carries a connecting nipple 27, a soft rubber &c. gasket 21 being arranged between and secured to the cup-like members. Screws 22, surrounded by bushings 25, extend through the gasket into the backplate 7 of the sound-box, and serve to hold the gasket and the member 18 in place. The member 18 may, however, be otherwise secured to the back. Oppositely-disposed screws 30, also surrounded by bushings, secure the member 28 to the gasket 21 together. The sound-box casing proper comprises a ring 5 fitting into an annular recess 8 in the back plate 7, and having an inwardlyextending flange 6 against which the gaskets 10 for the diaphragms are disposed. An apertured cover 12, through which the stylus-bar 13 passes, is provided. The sound-box carries stops to limit the movement of the stylus-bar, and so prevent damage due to excessive movement during handling. These stops comprise pins 33, 34 adjustably mounted above and below the stylus-bar pivot in lugs 25 on a plate 36 secured by sweating &c. to the ring 5.
GB30918/26A 1926-06-12 1926-12-06 Improvements in sound-boxes for gramophones and the like Expired GB268257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US268257XA 1926-06-12 1926-06-12

Publications (1)

Publication Number Publication Date
GB268257A true GB268257A (en) 1927-03-31

Family

ID=21833984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30918/26A Expired GB268257A (en) 1926-06-12 1926-12-06 Improvements in sound-boxes for gramophones and the like

Country Status (1)

Country Link
GB (1) GB268257A (en)

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