GB349146A - Improvements in and relating to the mounting of sound recording and reproducing devices for gramophones - Google Patents

Improvements in and relating to the mounting of sound recording and reproducing devices for gramophones

Info

Publication number
GB349146A
GB349146A GB682930A GB682930A GB349146A GB 349146 A GB349146 A GB 349146A GB 682930 A GB682930 A GB 682930A GB 682930 A GB682930 A GB 682930A GB 349146 A GB349146 A GB 349146A
Authority
GB
United Kingdom
Prior art keywords
pick
gramophones
mounting
lugs
pivots
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
GB682930A
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.)
ALBERT FREDERICK JAMES WRIGHT
Original Assignee
ALBERT FREDERICK JAMES WRIGHT
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 ALBERT FREDERICK JAMES WRIGHT filed Critical ALBERT FREDERICK JAMES WRIGHT
Priority to GB682930A priority Critical patent/GB349146A/en
Publication of GB349146A publication Critical patent/GB349146A/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)
  • Accessory Devices And Overall Control Thereof (AREA)

Abstract

349,146. Gramophones. WRIGHT, A. F. J., Billet Works, Billet Road, Walthamstow, London. March 1, 1930, No. 6829. [Class 40 (ii).] Consists in a method of mounting an electromagnetic pick-up or recording device in such a manner that the resonant frequency of the system is so low as to be imperceptible. The invention is shown as applied to a pick-up of the kind described in Specification 321,688, [Class 40 (iv), Telephones &c.]. The pick-up has two lugs 6, 7 which embrace a rectangular enlargement 3 on the end of a pivoted tubular carrier arm 1. The member 3 has holes drilled therein at opposite sides, in which steel centres 10, abutting against rubber pads 8 and surrounded by rubber bushes 9, are located. The parts 10 form bearings for pivot points 11, 12 carried by the lugs 6, 7, one or both of the pivots being adjustable if desired. With this arrangement, the compliance of the device in a direction parallel to that in which the point of the.stylus vibrates is increased. Modifications of details in the construction of the pivots are described.
GB682930A 1930-03-01 1930-03-01 Improvements in and relating to the mounting of sound recording and reproducing devices for gramophones Expired GB349146A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB682930A GB349146A (en) 1930-03-01 1930-03-01 Improvements in and relating to the mounting of sound recording and reproducing devices for gramophones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB682930A GB349146A (en) 1930-03-01 1930-03-01 Improvements in and relating to the mounting of sound recording and reproducing devices for gramophones

Publications (1)

Publication Number Publication Date
GB349146A true GB349146A (en) 1931-05-28

Family

ID=9821508

Family Applications (1)

Application Number Title Priority Date Filing Date
GB682930A Expired GB349146A (en) 1930-03-01 1930-03-01 Improvements in and relating to the mounting of sound recording and reproducing devices for gramophones

Country Status (1)

Country Link
GB (1) GB349146A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7370433B1 (en) 2006-03-20 2008-05-13 Albert Caraway Tape measure mountable digital recorder device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7370433B1 (en) 2006-03-20 2008-05-13 Albert Caraway Tape measure mountable digital recorder device

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