GB889661A - Improvements in or relating to phonographs - Google Patents

Improvements in or relating to phonographs

Info

Publication number
GB889661A
GB889661A GB1738757A GB1738757A GB889661A GB 889661 A GB889661 A GB 889661A GB 1738757 A GB1738757 A GB 1738757A GB 1738757 A GB1738757 A GB 1738757A GB 889661 A GB889661 A GB 889661A
Authority
GB
United Kingdom
Prior art keywords
lever
record
centre
post
unseating
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
GB1738757A
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
Priority claimed from GB684256A external-priority patent/GB862004A/en
Application filed by Individual filed Critical Individual
Priority to GB1738757A priority Critical patent/GB889661A/en
Priority to US738478A priority patent/US3044782A/en
Priority to NL228138A priority patent/NL228138A/xx
Publication of GB889661A publication Critical patent/GB889661A/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
    • G11B17/08—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from consecutive-access magazine of disc records
    • G11B17/12—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from consecutive-access magazine of disc records with axial transfer to the turntable from a stack with a vertical axis
    • 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
    • G11B17/08—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from consecutive-access magazine of disc records
    • G11B17/12—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from consecutive-access magazine of disc records with axial transfer to the turntable from a stack with a vertical axis
    • G11B17/16—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from consecutive-access magazine of disc records with axial transfer to the turntable from a stack with a vertical axis by mechanism in stationary centre post, e.g. with stepped post, using fingers on post
    • G11B17/162—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from consecutive-access magazine of disc records with axial transfer to the turntable from a stack with a vertical axis by mechanism in stationary centre post, e.g. with stepped post, using fingers on post with means for detecting the diameter of the record
    • G11B17/165—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from consecutive-access magazine of disc records with axial transfer to the turntable from a stack with a vertical axis by mechanism in stationary centre post, e.g. with stepped post, using fingers on post with means for detecting the diameter of the record with mechanical detecting means

Landscapes

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

Abstract

889,661. Automatic gramophones. HANSEN, H. C. May 27, 1958 [May 31, 1957], No. 7387/57. Addition to 862,004. Class 40 (2). In an automatic gramophone in which records are supported on a stepped centre post-and released one by one to the turntable, means are provided for engaging the centre hole of the lowermost record and pulling said record down to an intermediate position in which a feeler member gauges the diameter of the record to adjust the start-of-play position of the pick-up, after which the record is released to the turntable. The apparatus is substantially as in Specification 859,372 but is provided with a centre-post having a two-position unseating lever, the appropriate operating cam on the control cam-disc being suitably modified to obtain the double movement of the unseating lever. The centre-post comprises a stepped channel-shaped element 500, Figs. 17 and 18, a double-toothed unseating lever 524 to which is attached, as by a pin or welding at 536a, a channel-shaped member 530 which surrounds the lever 524 and rests in the channel of the centre-post 500 so that ears 538 and 540 of the member 530 may slide up and down flat surfaces 542a and 542b on the centre post 500. The centre-post is provided with a member 512 at its upper end whereby records passing thereover are caused to be moved to the left, as viewed in Figs. 14, 15 and 16, and come to rest on the step 529 of the unseating lever 524. The member 512 is slotted to facilitate withdrawal of records, and its lowermost end terminates at a little more than the thickness of a record above the step 529. During the first part of an automatic cycle the lever 524 moves the lowermost record to the right against the ears 538, 540, Fig. 15, after which the lever 524 and member 530 is lowered to the intermediate position shown in Fig. 16 during which time a feeler member on the pick-up arm gauges the diameter of the record and sets the pick-up arm relative to a cam-follower frictionally coupled thereto so that the pick-up becomes preset to the correct setting down radius for the record tested. Further rotation of the cam-disc controlling the automatic cycle causes the unseating lever 524 to be withdrawn into the centre-post 500 so that the record supported on the lever 524 is dropped on to the turntable, after which the lever 524 is raised to its initial position. Specifications 757,303, 757,378, 757,379, 770,544 and 801,174 also are referred to.
GB1738757A 1956-03-05 1957-05-31 Improvements in or relating to phonographs Expired GB889661A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1738757A GB889661A (en) 1956-03-05 1957-05-31 Improvements in or relating to phonographs
US738478A US3044782A (en) 1957-05-31 1958-05-28 Spindle with feeder position record changing phonographs
NL228138A NL228138A (en) 1957-05-31 1958-05-28

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB684256A GB862004A (en) 1956-03-05 1956-03-05 Improvements relating to phonographs
GB1738757A GB889661A (en) 1956-03-05 1957-05-31 Improvements in or relating to phonographs

Publications (1)

Publication Number Publication Date
GB889661A true GB889661A (en) 1962-02-21

Family

ID=37309625

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1738757A Expired GB889661A (en) 1956-03-05 1957-05-31 Improvements in or relating to phonographs

Country Status (1)

Country Link
GB (1) GB889661A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012076913A1 (en) * 2010-12-08 2012-06-14 Peter Daniel Griffiths Stackbreaker disc retrieval system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012076913A1 (en) * 2010-12-08 2012-06-14 Peter Daniel Griffiths Stackbreaker disc retrieval system

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