GB238940A - Improvements in talking machines - Google Patents

Improvements in talking machines

Info

Publication number
GB238940A
GB238940A GB1294024A GB1294024A GB238940A GB 238940 A GB238940 A GB 238940A GB 1294024 A GB1294024 A GB 1294024A GB 1294024 A GB1294024 A GB 1294024A GB 238940 A GB238940 A GB 238940A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
plate
pivoted
tubes
rods
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
GB1294024A
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 GB1294024A priority Critical patent/GB238940A/en
Publication of GB238940A publication Critical patent/GB238940A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)

Abstract

238,940. LumiÞre, L. May 26, 1924. Reproducing devices, arranging and supporting.-In a gramophone having a large diaphragm such as that described in Specification 11015/09, the diaphragm ismounted at the free end of a carrier adapted to swing overthe record, and is capable of being moved from the playing position by rotation about an horizontal axis at right-angles to the longitudinal axis of the carrying member so as to lie parallel to the turntable when not in use. The diaphragm ring 23, in the construction shown, is pivoted at 18, 18 on screws carried by lugs 16 on a yokeshaped piece 15 attached to two rods 11, 12. These have piston-like ends 13, and are slidable in tubes 8, 9, which are secured to a plate 6. The plate is pivoted to a hollow member 4 rotatably mounted on an upright support 3. Fig. 1 shows the diaphragm in vertical playing position, in which it is held, relatively to the swinging carrier, by a clip 24 and spring catch 26 engaging a block 25 on the diaphragm ring. To regulate the pressure of the stylus on the record, a plunger 27 is provided in a tube 10 carried by the plate 6. An adjustable spring forces the plunger against a stud 30. When the machine is to be closed, the diaphragm is drawn forward, the rods 11, 12 sliding in the tubes 8, 9, and it is then turned back about its horizontal axis 18- 18 so as to rest upon the carrying member.
GB1294024A 1924-05-26 1924-05-26 Improvements in talking machines Expired GB238940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1294024A GB238940A (en) 1924-05-26 1924-05-26 Improvements in talking machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1294024A GB238940A (en) 1924-05-26 1924-05-26 Improvements in talking machines

Publications (1)

Publication Number Publication Date
GB238940A true GB238940A (en) 1925-08-26

Family

ID=10013923

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1294024A Expired GB238940A (en) 1924-05-26 1924-05-26 Improvements in talking machines

Country Status (1)

Country Link
GB (1) GB238940A (en)

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