GB325795A - Improvements in or relating to sound reproducing machines - Google Patents

Improvements in or relating to sound reproducing machines

Info

Publication number
GB325795A
GB325795A GB3425328A GB3425328A GB325795A GB 325795 A GB325795 A GB 325795A GB 3425328 A GB3425328 A GB 3425328A GB 3425328 A GB3425328 A GB 3425328A GB 325795 A GB325795 A GB 325795A
Authority
GB
United Kingdom
Prior art keywords
record
sound
lever
box
disc
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
GB3425328A
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.)
LESLIE GORDON SANDFORD
Original Assignee
LESLIE GORDON SANDFORD
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 LESLIE GORDON SANDFORD filed Critical LESLIE GORDON SANDFORD
Priority to GB3425328A priority Critical patent/GB325795A/en
Publication of GB325795A publication Critical patent/GB325795A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor

Landscapes

  • Automatic Disk Changers (AREA)

Abstract

325,795. Sandford, L. G. Nov. 21, 1928. Sound-boxes, arrangement of.-Gramophones having a separate sound-box for playing each side of a disc record, and means for controlling the direction of rotation of the record to suit either sound-box, are further provided with automatic means for bringing the disc into contact with the second sound-box when the first soundbox has completed its travel. In the apparatus shown, the record disc 19 is carried by a spindle a supported by a lever 10 fulcrumed at 11 and retained by a hook 16 on a second lever 14 having a fulcrum 15. The end 21 of the lever 14 engages a cam 20 on the tone-arm 17 of the sound-box 18 so that, when the upper side of the record has been played, the hook 16 is moved to release the lever 10 and allow the record to drop under the control of a dashpot 13. The sound-box 24 is meanwhile moved upwardly to engage the underside of the record by a spring pillar 26 on the lever 10. Moving with the spindle a are friction discs i, i<1> which engage in turn with oppositely driven discs d, f to change the direction of rotation of the record.
GB3425328A 1928-11-21 1928-11-21 Improvements in or relating to sound reproducing machines Expired GB325795A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3425328A GB325795A (en) 1928-11-21 1928-11-21 Improvements in or relating to sound reproducing machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3425328A GB325795A (en) 1928-11-21 1928-11-21 Improvements in or relating to sound reproducing machines

Publications (1)

Publication Number Publication Date
GB325795A true GB325795A (en) 1930-02-21

Family

ID=10363322

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3425328A Expired GB325795A (en) 1928-11-21 1928-11-21 Improvements in or relating to sound reproducing machines

Country Status (1)

Country Link
GB (1) GB325795A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733070A (en) * 1956-01-31 Phonographic device
WO2005083699A1 (en) * 2004-02-17 2005-09-09 Koninklijke Philips Electronics N.V. Disk drive having a disk turning mechanism, and method of turning over a disk

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733070A (en) * 1956-01-31 Phonographic device
WO2005083699A1 (en) * 2004-02-17 2005-09-09 Koninklijke Philips Electronics N.V. Disk drive having a disk turning mechanism, and method of turning over a disk

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