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GB322663A - Means for securing improved needle track alignment in disc talking machines - Google Patents

Means for securing improved needle track alignment in disc talking machines

Info

Publication number
GB322663A
GB322663A GB3794528A GB3794528A GB322663A GB 322663 A GB322663 A GB 322663A GB 3794528 A GB3794528 A GB 3794528A GB 3794528 A GB3794528 A GB 3794528A GB 322663 A GB322663 A GB 322663A
Authority
GB
United Kingdom
Prior art keywords
rods
needle
pivots
sound
turntable
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
GB3794528A
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.)
WIRELESS MUSIC Ltd
Original Assignee
WIRELESS MUSIC Ltd
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 WIRELESS MUSIC Ltd filed Critical WIRELESS MUSIC Ltd
Priority to GB3794528A priority Critical patent/GB322663A/en
Publication of GB322663A publication Critical patent/GB322663A/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
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor

Landscapes

  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)

Abstract

322,663. Wireless Music, Ltd., and Davey, F. G. G. Dec. 22, 1928. Sound-reproducing devices, supporting.- Means for obtaining approximately tangential needle-track alignment relative to the record groove comprises a supporting device for the pick-up or other reproducer 1 consisting of a crossbar 2 which is pivotally mounted at points 3, 4 upon the ends of two rods 5, 6, respectively. These rods are mounted at their other ends on fixed pivots 7, 8, respectively, arranged just outside the edge of the turntable 9, the distance between the movable pivots 3, 4 being made equal to twice the distance between the fixed pivots 7, 8. The needle point lies on the, line A-B of the movable pivots 3, 4 and the fixed pivots 7, 8 are so disposed that this line in the mean position of the needle in the sound line spiral, passes through the centre of the turntable. The fixed pivots are also so arranged that the needle can be made to rest approximately upon the centre of the turntable spindle. The rods 5, 6 may be of equal length, but a more accurate construction can be obtained by applying a given formula. For use with mechanical reproducers, one or both of the rods 5, 6 is hollow and communicates with a tubular cross-bar 2 connected to the sound-box orifice.
GB3794528A 1928-12-22 1928-12-22 Means for securing improved needle track alignment in disc talking machines Expired GB322663A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3794528A GB322663A (en) 1928-12-22 1928-12-22 Means for securing improved needle track alignment in disc talking machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3794528A GB322663A (en) 1928-12-22 1928-12-22 Means for securing improved needle track alignment in disc talking machines

Publications (1)

Publication Number Publication Date
GB322663A true GB322663A (en) 1929-12-12

Family

ID=10400125

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3794528A Expired GB322663A (en) 1928-12-22 1928-12-22 Means for securing improved needle track alignment in disc talking machines

Country Status (1)

Country Link
GB (1) GB322663A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529676A (en) * 1945-04-05 1950-11-14 Riley R Osborn Tone arm
US2542534A (en) * 1945-01-23 1951-02-20 Pfanstiehl Chemical Co Tone arm
US2937877A (en) * 1954-04-22 1960-05-24 Stanley W Lange Tone arm with straight line motion
US3485501A (en) * 1965-10-19 1969-12-23 Donald J Baker Phonograph tone arm assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2542534A (en) * 1945-01-23 1951-02-20 Pfanstiehl Chemical Co Tone arm
US2529676A (en) * 1945-04-05 1950-11-14 Riley R Osborn Tone arm
US2937877A (en) * 1954-04-22 1960-05-24 Stanley W Lange Tone arm with straight line motion
US3485501A (en) * 1965-10-19 1969-12-23 Donald J Baker Phonograph tone arm assembly

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