GB493586A - Improvements in or relating to sound reproducing apparatus - Google Patents

Improvements in or relating to sound reproducing apparatus

Info

Publication number
GB493586A
GB493586A GB3506637A GB3506637A GB493586A GB 493586 A GB493586 A GB 493586A GB 3506637 A GB3506637 A GB 3506637A GB 3506637 A GB3506637 A GB 3506637A GB 493586 A GB493586 A GB 493586A
Authority
GB
United Kingdom
Prior art keywords
spindle
cap
plate
repeating
parent specification
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
GB3506637A
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 GB3506637A priority Critical patent/GB493586A/en
Publication of GB493586A publication Critical patent/GB493586A/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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
    • G11B27/13—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier the information being derived from movement of the record carrier, e.g. using tachometer

Landscapes

  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

493,586. Gramophones. ROUTIN, J. L. Dec. 17, 1937, No. 35066. Addition to 489,894. [Class 40 (ii)] Consists in the following detail improvements in the repeating device for gramophone records claimed in the parent Specification. (1) The needle-guiding plate is made of metal hardened on its surface by chromium plating, heat treatment or other processes. (2) A protective layer or thin strips 24 of chamois leather &c. are provided on the under side of the plate. (3) Means for adapting the repeating-device for fitting on the spindle of the turntable, irrespective of the diameter of the spindle, comprise a cap 20 which may be sprung over the end of the spindle 1 (the central hole in the record being reamed, if necessary, to the external diameter of the cap). A cylindrical core 12, having an eccentric hole 13 surrounded by a flanged socket 14 through which the cap 20 passes, forms a bearing for the plate 11, a knob 15 having a graduated dial 17 associated with an index mark 18 being fixed to the part 12. This improvement relates particularly to the device shown in Figs. 5 and 6 of the parent Specification.
GB3506637A 1937-12-17 1937-12-17 Improvements in or relating to sound reproducing apparatus Expired GB493586A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3506637A GB493586A (en) 1937-12-17 1937-12-17 Improvements in or relating to sound reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3506637A GB493586A (en) 1937-12-17 1937-12-17 Improvements in or relating to sound reproducing apparatus

Publications (1)

Publication Number Publication Date
GB493586A true GB493586A (en) 1938-10-11

Family

ID=10373385

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3506637A Expired GB493586A (en) 1937-12-17 1937-12-17 Improvements in or relating to sound reproducing apparatus

Country Status (1)

Country Link
GB (1) GB493586A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577304A (en) * 1983-07-05 1986-03-18 Hamid Hannani Device for correcting audio record's groove eccentricity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577304A (en) * 1983-07-05 1986-03-18 Hamid Hannani Device for correcting audio record's groove eccentricity

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