GB131795A - Improvements in Sound Boxes or Reproducers for Gramophones or the like Talking Machines. - Google Patents

Improvements in Sound Boxes or Reproducers for Gramophones or the like Talking Machines.

Info

Publication number
GB131795A
GB131795A GB1864518A GB1864518A GB131795A GB 131795 A GB131795 A GB 131795A GB 1864518 A GB1864518 A GB 1864518A GB 1864518 A GB1864518 A GB 1864518A GB 131795 A GB131795 A GB 131795A
Authority
GB
United Kingdom
Prior art keywords
sound
box
stylus
bar
lugs
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
GB1864518A
Inventor
James Mcquinn
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1864518A priority Critical patent/GB131795A/en
Publication of GB131795A publication Critical patent/GB131795A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms

Landscapes

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

Abstract

131,795. McQuinn, J. June 11, 1918. Tool arms and mountings; diaphragms; soundboxes, mounting and insulating.-The stylus bar 21 of a gramophone or like sound-box is connected by flat spring 25 or by a single spring, to lugs 24 on the sound-box, the springs being detachably secured by screws to the stylus-bar 21 and the lugs 24, which lie at opposite sides of the springs. The upper end 22 of the stylus bar 21 is forked and secured to a plate 35, between which and a small disk 36 the diaphragm 23 is clamped by a screw 37. A rubber ring 30 encircles the soundbox neck, and forms a cushion between the sound-box back-plate and a flange 31 on the tone-arm 8 when the sound-box is in position. The diaphragm is of cardboard or other fibrous material steeped in hot glue and dried under pressure. It may subsequently be immersed in formalin.
GB1864518A 1918-06-11 1918-06-11 Improvements in Sound Boxes or Reproducers for Gramophones or the like Talking Machines. Expired GB131795A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1864518A GB131795A (en) 1918-06-11 1918-06-11 Improvements in Sound Boxes or Reproducers for Gramophones or the like Talking Machines.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1864518A GB131795A (en) 1918-06-11 1918-06-11 Improvements in Sound Boxes or Reproducers for Gramophones or the like Talking Machines.

Publications (1)

Publication Number Publication Date
GB131795A true GB131795A (en) 1919-09-04

Family

ID=32608334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1864518A Expired GB131795A (en) 1918-06-11 1918-06-11 Improvements in Sound Boxes or Reproducers for Gramophones or the like Talking Machines.

Country Status (1)

Country Link
GB (1) GB131795A (en)

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