US3506273A - Record-bearing spindle for record-changers - Google Patents

Record-bearing spindle for record-changers Download PDF

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Publication number
US3506273A
US3506273A US622247A US3506273DA US3506273A US 3506273 A US3506273 A US 3506273A US 622247 A US622247 A US 622247A US 3506273D A US3506273D A US 3506273DA US 3506273 A US3506273 A US 3506273A
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United States
Prior art keywords
record
arms
spindle
stack
tube
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
US622247A
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English (en)
Inventor
Louis Thevenaz
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.)
Paillard SA
Original Assignee
Paillard SA
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Filing date
Publication date
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Publication of US3506273A publication Critical patent/US3506273A/en
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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
    • 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

Definitions

  • a record-bearing spindle for an automatic recordchanger has at least three rigid arms for holding a stack of records. The arms project through openings of the spindle, and are retracted into the spindle by a part sliding in the spindle to enable the passage of a record.
  • An elastic device is expandible for holding the next record in the stack and is controlled by a sliding member in the spindle.
  • each arm is rectilinear and joined to the lower part through an inclined portion which can slide against the lower edge of a corresponding opening of the spindle to govern the radial displacement of the ends of the arms.
  • a sensing strip projects through a slot in the spindle and yields to the dropping record, so signalling to the record-changer mechanism if a record remains to be played.
  • This invention relates to a record-bearing spindle for automatic record-changers and more particularly to a vertical spindle of the type having retractable arms for dropping successive single records from a stack on to a turntable.
  • the spindles comprise at least three arms capable of occupying a first position for supporting at least one record, in which position the arms project outside the spindle, and a second position in which the arms are retracted into the spindle to enable the dropping of the record which rested previously on the said arms, the latter cooperating with a sliding part in the spindle and of which the displacement govern the change of the arms into one or other of their said positions, the spindle comprising also a device for holding the record located above that resting on said arms, this holding device being governed by a sliding member located on the inside of the record-bearing spindle.
  • An object of the present invention is to provide an improved record-bearing spindle of the aforementioned type which overcomes the various drawbacks which have been considered above.
  • this record-bearing spindle is characterized in that each arm is formed by a rigid element of which the upper part is rectilinear and intended to separate from the wall of the spindle in the holding position for the records and to come into a housed position in the spindle substantially parallel to the axis of the latter when the arms are in retracted position, this upper part of each arm being joined to the lower part through an inclined portion forming a ramp and being supported against the lower edge of the corresponding opening of the spindle to govern the radial displacements of the ends of the arms according to the axial displacement of the sliding part.
  • FIG. 1 shows in general manner an automatic recordchanger provided with such a record-bearing spindle.
  • FIG. 2 is a longitudinal section, on a larger scale, of the record-bearing spindle according to the present invention, in the open position of the arms.
  • FIG. 3 is a partial section of the spindle shown in FIG. 2, the arms being in their retracted position.
  • FIGS. 4a and 4b are sections along the line IVIV of FIG. 2, showing the upper part of the mechanism of the spindle forming a holding device in two operating positions.
  • FIG. 5 is a section along the line V-V of FIG. 2.
  • the record-changer comprises a base-plate 1 carrying a record turntable 2 traversed by a record-bearing spindle 3.
  • the latter has arms 4 of which the lower end is located in the record-bearing spindle, while their outer ends are separated from this spindle to support a stack 5 of records in reserve.
  • the record-changer has, of course, a pick-up arm 6 carrying a pick-up head 7 and means, not shown, to cause the necessary movement, at the end of a record, to deflect the pick-up arm 6 from the turntable 2, to retain in position on the spindle 3 all the records of the reserve stack 5, with the exception of the lower record of this stack, and to retract the arms 4 to the interior of the spindle 3 to enable the lower record of the stack 5 to fall on the turntable 2. Then, the arms 4 are restored to the open position to support the stack 5 again, while the pick-up arm 6 is displaced to position the head 7 at the beginning of the groove of the record which has been placed in position for playing.
  • FIG. 2 The internal construction of the record-bearing spindle 3 is illustrated in detail in FIG. 2.
  • This spindle is constituted by a tube 8 of which the upper end is covered by a cap 9.
  • the tube 8 has three slots 10 and contains three arms 11 extending through these slots.
  • the lower end of each arm 11 is enlarged at 12 to be engaged in a seating provided in a part 13 sliding on the interior of the tube 8.
  • the arms 11, three in number in this embodiment, are held on the part 13 by a spring constituted by a split sleeve 14 which surrounds the part 13 and keeps the enlarged parts 12 of the arms in the seatings of this part 13.
  • This split sleeve 14 has the effect of urging the enlarged end 12 towards the centre of the tube 8 and consequently to cause each arm 11 to pivot in such manner that its upper end separates as far as possible from the tube 8.
  • Each arm is rigid and has two successive bends which divide it into three substantially straight portions.
  • the central portion 15 is supported against the lower edge of the slot 10 and limits the displacement of the arm 11 towards the exterior of the tube 8.
  • the part 13 is slidably mounted on the interior of the tube 8 and has at its lower end a groove 16 in which is engaged a lever 17 terminating in a fork and enabling control of the longitudinal sliding movements of part 13 on the interior of the tube 8.
  • the upper ends of the slot 10 of the tube 8 constitute three apertures 18 with respect to which there is arranged, on the interior of the record-bearing spindle, a rubber washer 19 gripped between two metallic washers 20 and 21.
  • the washer 20 rests on a part 22 engaged in the tube 8 and being supported, by a terminal flange,
  • the washer 21 may be displaced in the direction of the washer 20 by a pull-rod 24 arranged on the interior of the tube 8 and passing through longitudinal holes of the part 22 and of the sliding part 13.
  • the lower end of this pull-rod 24 projects beyond the part 13 and carries two nuts 25 enabling a lever 26 terminating in a fork to draw the pull-rod 24 downwards.
  • the record-bearing spindle shown comprises also a feeler device to signal to the mechanism of the record player the last of the reserve stack of records to be played.
  • This device is constituted by a metallic wire 27 projecting outside the tube 8 through an opening 28 of the latter and extending to the bottom of the tube 8 by passing through a longitudinal groove provided at the periphery of the part 13.
  • the lower end of the wire 27 is curved at 29 and engaged in a bore of a sleeve 30 sliding on the lower end of the part 13.
  • the record-bearing spindle In the position represented in FIG. 2, the record-bearing spindle is in the position for holding the reserve stack of records and a record 31 is represented by a broken line, positioned on the turntable 2 for playing, a record 32 resting on the arms 11 and a record 33 being positioned on the record 32 of the stack 5.
  • the lever 17 then causes a downward displacement of the control part 13, which moves the arms 11 and causes them to retract into the interior of the tube 8 under the action of oblique part 15 bearing against the lower edge of each opening 10.
  • the arms At the end of the downward displacement of the part 13, the arms occupy the position illustrated in FIG. 3, and the record 32 can drop the length of the tube 8 to come to rest on the record 31 positioned on the turntable 2.
  • the levers 17 and 26 then effect a movement in the opposite direction, which first of all restores the arms 11 to the position shown in FIG. 2, then releases the washer 19 which again takes up its initial form, thus relaxing its pressure on the record 33.
  • the latter slides on the tube 8 until it rests on the end of the arms 11, carrying with it any other records which may comprise the stack 5.
  • the embodiment which has been described is very advantageous, for it enables an excellent stability of the stack of reserve records to be achieved. Furthermore, the solidity of the spindle is hardly aitected by the presence of three openings 18 enabling the rubber washer 19' to retain the stack in position during the placing of a record on the turntable 2.
  • a record supporting spindle assembly for an automatic record changer said spindle assembly including a tubular member having at least three openings therein, each opening having a bottom edge, and including at least three arms capable of occupying a first position for supporting at least one record, in which position said arms project beyond the tubular member through said openings therein, and a second retracted position in which the arms are caused to move within said tubular member so as to permit downward movement of the record previously supported on said arms, a member slidable in said tubular member having an upper end, said arms pivotally mounted on the upper end of said member, the displacements of said member controlling the passage of the arms into one of their said positions or the other, each said arm comprising a rigid element having an upper and bottom portion, said upper portion being straight and is adapted to move outwardly from the wall of said tubular member to a record holding position and to be moved inside of the tubular member substantially parallel to the axis thereof when the arms are in their retracted position, the upper portion of each arm being connected to the bottom portion
  • a record supporting spindle assembly wherein said retaining means is located within said tubular member and comprises an element of resilient, deformable material arranged to be deformed so as to project from the tubular member and be urged against the wall of the central opening in said superposed record whereby at least one said superposed record is supported during the retraction of the arms and said downward passage of a record to be played, said tubular member having at least one aperture through which said element of resilient material can project, a pair of spaced rigid elements within said tubular member and between which said resilient element is positioned, the lowermost of said rigid elements being fixed and the uppermost of said rigid elements being slidable, means on the upper end of said slidable rod engaging said uppermost rigid element whereby downward movement of said slidable rod compresses said resilient element and urges it partly through said aperture against the opening in said superposed record.

Landscapes

  • Sheets, Magazines, And Separation Thereof (AREA)
  • Automatic Disk Changers (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
US622247A 1966-03-15 1967-03-10 Record-bearing spindle for record-changers Expired - Lifetime US3506273A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH373166A CH436762A (fr) 1966-03-15 1966-03-15 Tige porte-disques pour changeur de disque

Publications (1)

Publication Number Publication Date
US3506273A true US3506273A (en) 1970-04-14

Family

ID=4262283

Family Applications (1)

Application Number Title Priority Date Filing Date
US622247A Expired - Lifetime US3506273A (en) 1966-03-15 1967-03-10 Record-bearing spindle for record-changers

Country Status (4)

Country Link
US (1) US3506273A (de)
CH (1) CH436762A (de)
DE (1) DE1547061A1 (de)
GB (1) GB1151811A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771796A (en) * 1971-08-16 1973-11-13 Avnet Inc Record changer spindle
US3966215A (en) * 1974-02-01 1976-06-29 Strathearm Audio Limited Phonograph auto-changer center spindle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616705A (en) * 1946-10-12 1952-11-04 Arthur A Johnson Phonograph
US3083022A (en) * 1955-08-10 1963-03-26 Hansen Hans Christian Center spindles for magazine phonographs
US3288471A (en) * 1964-06-08 1966-11-29 Vm Corp Automatic record changing apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616705A (en) * 1946-10-12 1952-11-04 Arthur A Johnson Phonograph
US3083022A (en) * 1955-08-10 1963-03-26 Hansen Hans Christian Center spindles for magazine phonographs
US3288471A (en) * 1964-06-08 1966-11-29 Vm Corp Automatic record changing apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771796A (en) * 1971-08-16 1973-11-13 Avnet Inc Record changer spindle
US3966215A (en) * 1974-02-01 1976-06-29 Strathearm Audio Limited Phonograph auto-changer center spindle

Also Published As

Publication number Publication date
DE1547061A1 (de) 1969-11-20
CH436762A (fr) 1967-05-31
GB1151811A (en) 1969-05-14

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