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GB541081A - Improvements in and relating to pick-up control mechanism for automatic gramophones - Google Patents

Improvements in and relating to pick-up control mechanism for automatic gramophones

Info

Publication number
GB541081A
GB541081A GB8345/40A GB834540A GB541081A GB 541081 A GB541081 A GB 541081A GB 8345/40 A GB8345/40 A GB 8345/40A GB 834540 A GB834540 A GB 834540A GB 541081 A GB541081 A GB 541081A
Authority
GB
United Kingdom
Prior art keywords
pick
arm
pin
feeler
record
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
GB8345/40A
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.)
Garrard Engineering & Manufacturing Comp
Original Assignee
Garrard Engineering & Manufacturing Comp
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 Garrard Engineering & Manufacturing Comp filed Critical Garrard Engineering & Manufacturing Comp
Priority to GB8345/40A priority Critical patent/GB541081A/en
Priority to US403466A priority patent/US2309352A/en
Publication of GB541081A publication Critical patent/GB541081A/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
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/52—Arrangements permitting styli to yield under excessive pressure
    • 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
    • G11B3/02—Arrangements of heads
    • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
    • G11B3/085—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers using automatic means
    • G11B3/08503—Control of drive of the head
    • G11B3/08506—Control of drive of the head for pivoting pick-up arms
    • G11B3/08509—Control of drive of the head for pivoting pick-up arms using mechanical detecting means
    • 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
    • G11B3/02—Arrangements of heads
    • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
    • G11B3/085—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers using automatic means
    • G11B3/08535—Driving the head
    • G11B3/08538—Driving the head the head being driven by the same means as the record can
    • G11B3/08541—Driving the head the head being driven by the same means as the record can for pivoting pick-up arms
    • G11B3/08545—Driving the head the head being driven by the same means as the record can for pivoting pick-up arms driven by cams

Landscapes

  • Control Of Position Or Direction (AREA)
  • Transmission Devices (AREA)
  • Toys (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

541,081. Gramophones. GARRARD ENGINEERING & MANUFACTURING CO., Ltd., and OFFEN. F. J. May 9, 1940, No. 8345. Addition to 519,496. [Class 40 (ii)] Relates to the mechanism described in the parent Specification for moving the pick-up inward to the starting groove under control of a feeler brought against the edge of a record on the turntable. According to the invention means are provided to allow the pick-up freedom of lateral movement when it is lowered, so that if the needle engages a quickpitch initial feed groove on a record it may at once follow this groove. As shown, an arm 10 on the vertical pivot sleeve 4 of the pick-up arm and a lever 6 operated by the feeler are coupled together by a pin 8 on an arm 7 attached to the rod 5 which serves to raise and lower the pick-up, and the pin 8 has a recess whereby when the pick-up is lowered by the raising of the rod 5 the arm 10 and the pick-up become free within the limit of the recess to move laterally. Also, in the present arrangement, a blade spring 16, Fig. 3, is used instead of a square-headed pin in conjunction with the locating stops 13, 14, 15.
GB8345/40A 1940-05-09 1940-05-09 Improvements in and relating to pick-up control mechanism for automatic gramophones Expired GB541081A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8345/40A GB541081A (en) 1940-05-09 1940-05-09 Improvements in and relating to pick-up control mechanism for automatic gramophones
US403466A US2309352A (en) 1940-05-09 1941-07-22 Pickup control mechanism for automatic phonographs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8345/40A GB541081A (en) 1940-05-09 1940-05-09 Improvements in and relating to pick-up control mechanism for automatic gramophones

Publications (1)

Publication Number Publication Date
GB541081A true GB541081A (en) 1941-11-12

Family

ID=9850754

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8345/40A Expired GB541081A (en) 1940-05-09 1940-05-09 Improvements in and relating to pick-up control mechanism for automatic gramophones

Country Status (2)

Country Link
US (1) US2309352A (en)
GB (1) GB541081A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2541072A (en) * 1942-01-03 1951-02-13 Farnsworth Res Corp Automatic record changer
US2519187A (en) * 1942-12-21 1950-08-15 Wurlitzer Co Automatic phonograph
US2616708A (en) * 1943-01-27 1952-11-04 Hartford Nat Bank & Trust Co System for the reproduction of phonograph records of different diameters
GB615993A (en) * 1945-04-18
US2526513A (en) * 1946-03-28 1950-10-17 Somma Raymond Automatic phonograph
US2628843A (en) * 1946-10-09 1953-02-17 Alfred E Comstock Automatic phonograph
US2719720A (en) * 1946-11-29 1955-10-04 Rock Ola Mfg Corp Phonographs
US2670211A (en) * 1947-01-08 1954-02-23 Magnavox Co Record changer
US2636742A (en) * 1947-09-26 1953-04-28 Admiral Corp Phonograph record changer
US2640703A (en) * 1948-10-13 1953-06-02 Dudley H Smith Record changer
US2780466A (en) * 1950-08-18 1957-02-05 Noma Lites Inc Phonograph tone arm restoring mechanism
US2697608A (en) * 1951-01-26 1954-12-21 Ami Ind Inc Phonograph tone arm control
US2898115A (en) * 1952-08-04 1959-08-04 Warwick Mfg Corp Automatic inter-mix record player
US3275327A (en) * 1961-07-14 1966-09-27 Mcneil Corp Record player

Also Published As

Publication number Publication date
US2309352A (en) 1943-01-26

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