US3863934A - Dismountable column applicable to automatic record players - Google Patents

Dismountable column applicable to automatic record players Download PDF

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Publication number
US3863934A
US3863934A US437625A US43762574A US3863934A US 3863934 A US3863934 A US 3863934A US 437625 A US437625 A US 437625A US 43762574 A US43762574 A US 43762574A US 3863934 A US3863934 A US 3863934A
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US
United States
Prior art keywords
column
ring
protuberance
shaft
groove
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 - Lifetime
Application number
US437625A
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English (en)
Inventor
Raul Antonio Vega
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3863934A publication Critical patent/US3863934A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/08Guiding record carriers not specifically of filamentary or web form, or of supports therefor from consecutive-access magazine of disc records
    • G11B17/12Guiding 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
    • G11B17/16Guiding 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

Definitions

  • the tubular shaft has a vertical groove therein within which is guided the protuberance and a ring-shaped groove positioned above the protuberance when the column is fully inserted within the tubular shaft.
  • the ring-shaped groove carries an open elastic ring having an interior tongue which rides within the vertical groove and has a length not exceeding the thickness of the wall of the tubular shaft.
  • the purpose of the present invention is to furnish a central dismountable column and mounting, in an automatic record player, without complicated mechanism, which would offer security and the required efficiency.
  • This purpose is reached in an absolutely efficient way, by means of a simple procedure consisting of an axial effort of separating the said column and pushing it in order to mount the same. This takes place because of the existence ofa protuberance in the column, coinciding with a groove made in the flange ofa central hollow shaft, around which turns the plate of the record player.
  • FIG. 1 is a perspective exposed view ofthe main elements composing the present invention
  • FIG. 2 is an enlarged perspective view of the parts composing the coupling.
  • FIG. 3 is a longitudinal view in partial diametric section at the coupling when assembled.
  • FIG. 1 In FIG. 1 are shown column 1 the constitution and the mechanism of which is of general knowledge, hollow central shaft 2 and retention ring 3.
  • column 1 has a pyramid-shaped protuberance 4, while hollow shaft 2 has a ring-shaped groove 5 and a vertical groove 6, exceeding in length the height of groove 5.
  • Groove 6 is deep enough to communicate with the hollow portion of the shaft and to give access to pyramid-shaped protuberance 4, without any free space or adjustment.
  • Ring 3 has an internal small tongue 7, which is in front of a cut 8 interrupting its continuity. Ring 3 has a certain elasticity, permitting it to expand diametrically.
  • FIG. 3 shows a longitudinal view of all of the composing parts in their places after the column has been assembled.
  • the lower portion of column I can be seen within the cylindrical hollow of shaft 2 with the pyramid-shaped protuberance 4 centered into vertical groove 6, and resting on stop 6' to determine the limit in depth of column 1.
  • Elastic ring 3 is positioned in ring-shaped groove 5 yielding the necessary stop to the column.
  • Tongue 7 penetrates up to the interior perimeter of the cylindrical hollowness of shaft 2 thereby positioning the pyramid-shaped protuberance 4.
  • Ring 3 located in the ring-shaped groove 5, is in contact therewith in such a way that tongue 7 enters vertical groove 6.
  • Column 1 is assembled with shaft 2 by introducing column 1 into the cylindrical hollowness of shaft 2 in such a way that pyramid-shaped protuberance 4 enters into vertical groove 6, which while being displaced axially will contact small tongue 7. Due to the elastic nature of ring 3 a slight push on column 1 forces protuberance 4 past tongue 7 and against bottom 6' of vertical groove 6.
  • a dismountable column within a hollow shaft attachable to the base of a record player, said column having on a portion entering said shaft and on said portion a pyramid-shaped protuberance, said hollow shaft having a vertical groove within which is guided said protuberance and a ring-shaped groove positioned above said protuberance when the column is inserted fully within the shaft, and an elastic ring having an opening, the thickness of said ring being coincident with the width of the ring-shaped groove and having an interior coincident with the bottom of the ring-shaped groove when riding within said groove, said ring having a small interior tongue positioned opposite the opening to fit within the vertical groove and having a length not exceeding the thickness of the wall of the tubular shaft but of a length sufficient to engage said protuberance as said column is mounted or dismounted.
US437625A 1973-02-09 1974-01-29 Dismountable column applicable to automatic record players Expired - Lifetime US3863934A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AR246523A AR193481A1 (es) 1973-02-09 1973-02-09 Columna desmontable aplicable a tocadiscos automaticos

Publications (1)

Publication Number Publication Date
US3863934A true US3863934A (en) 1975-02-04

Family

ID=3463602

Family Applications (1)

Application Number Title Priority Date Filing Date
US437625A Expired - Lifetime US3863934A (en) 1973-02-09 1974-01-29 Dismountable column applicable to automatic record players

Country Status (10)

Country Link
US (1) US3863934A (es)
JP (1) JPS49113605A (es)
AR (1) AR193481A1 (es)
AU (1) AU6406573A (es)
BR (1) BR7304022D0 (es)
DE (1) DE2402727A1 (es)
ES (1) ES413304A1 (es)
FR (1) FR2217768B3 (es)
IT (1) IT1002780B (es)
NL (1) NL7306993A (es)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588120A (en) * 1969-04-21 1971-06-28 Jack E Bayha Plastic record turntable spindle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588120A (en) * 1969-04-21 1971-06-28 Jack E Bayha Plastic record turntable spindle

Also Published As

Publication number Publication date
IT1002780B (it) 1976-05-20
AR193481A1 (es) 1973-04-23
AU6406573A (en) 1975-07-03
ES413304A1 (es) 1976-01-16
BR7304022D0 (pt) 1974-09-24
FR2217768A1 (es) 1974-09-06
NL7306993A (es) 1974-08-13
JPS49113605A (es) 1974-10-30
DE2402727A1 (de) 1974-08-22
FR2217768B3 (es) 1976-11-05

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