US3591102A - Self-catching spool for tapelike record carriers - Google Patents

Self-catching spool for tapelike record carriers Download PDF

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Publication number
US3591102A
US3591102A US839854A US3591102DA US3591102A US 3591102 A US3591102 A US 3591102A US 839854 A US839854 A US 839854A US 3591102D A US3591102D A US 3591102DA US 3591102 A US3591102 A US 3591102A
Authority
US
United States
Prior art keywords
spool
sectors
flange
hub ring
spring elements
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
US839854A
Other languages
English (en)
Inventor
Heinz Keiner
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.)
Ernst Leitz Wetzlar GmbH
Original Assignee
Ernst Leitz Wetzlar GmbH
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 Ernst Leitz Wetzlar GmbH filed Critical Ernst Leitz Wetzlar GmbH
Application granted granted Critical
Publication of US3591102A publication Critical patent/US3591102A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/32—Details specially adapted for motion-picture projection
    • G03B21/321—Holders for films, e.g. reels, cassettes, spindles
    • G03B21/326—Means for fixing the film on the axis of a reel or spindle
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/60—Guiding record carrier
    • G11B15/66—Threading; Loading; Automatic self-loading
    • G11B15/67—Threading; Loading; Automatic self-loading by extracting end of record carrier from container or spool
    • G11B15/674—Threading or attaching end of record carrier on or to single reel
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/037—Single reels or spools

Definitions

  • a flanged spool of the present invention is useful for winding and reeling tapelike record carriers wherein during rotation the record carrier, for example a narrow motion picture film, is automatically gripped when it is inserted between the flanges of the spool.
  • Spools of this kind are already known to the prior art in two fundamentally different forms.
  • spools which carry on their hub a ring that is usually rotatable and which grips into the perforations of the approaching film to catch the latter
  • spools which carry flat bandlike springs on the inner side of the flange between which the approaching film is gripped and held.
  • the film of the second system is subjected to a lateral pressure in such a manner that there is no danger of the film being torn at the perforations.
  • the purpose of the present invention is to technically perfect this second system.
  • Such spools in their present form have the disadvantage of being difficult to manufacture.
  • the spools which are usually made of synthetic plastic, are formed of two similar halves which are joined at their hubs.
  • the production of such a spool requires two injection operations and one adhering operation which necessitates too many manipulations for such a simple product.
  • the present invention also eliminates the last-mentioned difficulty of the prior art by forming the axial slit in the hub ring in a simple manner during the fonnation of the spool.
  • FIG. 1 is a perspective view-of the spool
  • FIG. 2 is an enlarged fragmentary side view of the flange sectors
  • FIG. 3 is a radial section of the spool.
  • the spool is shown with a middle hub 9 and a hub ring 7.
  • the hub ring 7 has three flange sectors 1, 2 and 3 on one side and three other flange sectors 4, 5 and 6 on the other side.
  • the flange sectors 1 to 6 have catching springs la, lb to 6a, 6b respectively associated therewith.
  • An axial groove 8 extends through the hub ring 7 to the depth of the flange sector 4. Slots 7a are provided in the hub ring 7 at the free ends of the catching springs la, lb to 6a, 6b.
  • one side of the spool is provided with three flange sectors 1, 2 and 3 whose radial center lines are spaced [20 from one another.
  • the three flange sectors 4, 5 and 6 are of the same construction but are positioned opposite the vacant spaces between the sectors of the first side.
  • Each flange sector is slitted radially along its two outer edges and in those regions is severed from the hub ring 7 in such a manner that each sector is provided with two inwardly bent catching springs, as shown most clearly at sector 1 which is provided with catching springs la, 1b.
  • the hub ring 7 is also provided with slots 7a into which the free ends of the spring elements extend, since these ends were cut free from the hub ring at the bottom of the slot. The ends of the spring elements will therefore extend into the interior of each slot, inside the periphery of the hub ring.
  • FIG. 2 clearly shows that the outer edges of neighboringv sectors are in circumferential alignment with each other. With this arrangement of the sectors, adependable catching of the film is assured, and it is also possible to produce the spool by a simple injection molding process. The process proceeds with a separation of the mold sections from one another, and in a manner which also permits formation of the axial groove 8 in the hub ring 7 which could not be formed in the spools of the prior art constructions.
  • FIG. 3 shows a transverse radial section through the hub of the spool and perpendicular to the film.
  • the middle hub 9 is for receiving the end of the projector shaft and it carries radially projecting walls of equal thickness so as to ensure uniform contraction of the material.
  • the flange sectors of l to 6, the hub ring 7, and the middle hub 9 have the same wall thickness.
  • a self-catching unitary spool for a record carrier strip comprising a hub ring (7) and two spool flanges on the top and bottom of said hub ring, each flange defining an equal number of sectors (1-3 and 4-6) with each sector being positioned opposite vacant spaces between the flange sectors of the opposite flange, and radial slits in the lateral margins of each sector which are cut free at said hub ring from said slit to the outer edge of said sector to define leaflike spring elements (la, lb-6a, 6b) projecting inwardly from said sectors, the outer edges of said spring elements of two flange sectors on opposite sides of the spool being aligned in the same axial direction whereby said spring elements are offset from each other.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
US839854A 1968-07-15 1969-07-08 Self-catching spool for tapelike record carriers Expired - Lifetime US3591102A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681772869 DE1772869A1 (de) 1968-07-15 1968-07-15 Selbstfangspule fuer bandfoermige Aufzeichnungstraeger

Publications (1)

Publication Number Publication Date
US3591102A true US3591102A (en) 1971-07-06

Family

ID=5701435

Family Applications (1)

Application Number Title Priority Date Filing Date
US839854A Expired - Lifetime US3591102A (en) 1968-07-15 1969-07-08 Self-catching spool for tapelike record carriers

Country Status (5)

Country Link
US (1) US3591102A (de)
AT (1) AT291764B (de)
DE (1) DE1772869A1 (de)
FR (1) FR2012958A1 (de)
GB (1) GB1211967A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3677495A (en) * 1971-03-05 1972-07-18 Ampex Tape retaining reel cartridge
US3768750A (en) * 1971-12-30 1973-10-30 Paulman Inc Automatic threading film reel
US3837599A (en) * 1971-04-22 1974-09-24 Polygon Concepts Inc Cassette
JPS5511650U (de) * 1978-07-06 1980-01-25
US5495998A (en) * 1993-02-09 1996-03-05 Fuji Photo Film Co., Ltd. Tape reel structure for magnetic tape cassette
US7303569B2 (en) 2000-10-12 2007-12-04 Cardica, Inc. Implantable superelastic anastomosis device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2687496B2 (ja) * 1988-10-31 1997-12-08 ソニー株式会社 テープリール
US4993655A (en) * 1989-11-28 1991-02-19 Shape Inc. One-piece tape reel
FR2958260B1 (fr) 2010-04-01 2012-11-16 Matra Mfg & Services Velo a transmission par courroie et son cadre

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB746720A (en) * 1954-05-13 1956-03-21 Hugo Henkels Reel with holding members for a band wound thereon
US3064917A (en) * 1959-08-13 1962-11-20 Dictaphone Corp Reels
US3323746A (en) * 1965-02-18 1967-06-06 Paillard Sa Automatic end fastener for film spool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB746720A (en) * 1954-05-13 1956-03-21 Hugo Henkels Reel with holding members for a band wound thereon
US3064917A (en) * 1959-08-13 1962-11-20 Dictaphone Corp Reels
US3323746A (en) * 1965-02-18 1967-06-06 Paillard Sa Automatic end fastener for film spool

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3677495A (en) * 1971-03-05 1972-07-18 Ampex Tape retaining reel cartridge
US3837599A (en) * 1971-04-22 1974-09-24 Polygon Concepts Inc Cassette
US3768750A (en) * 1971-12-30 1973-10-30 Paulman Inc Automatic threading film reel
JPS5511650U (de) * 1978-07-06 1980-01-25
US5495998A (en) * 1993-02-09 1996-03-05 Fuji Photo Film Co., Ltd. Tape reel structure for magnetic tape cassette
US7303569B2 (en) 2000-10-12 2007-12-04 Cardica, Inc. Implantable superelastic anastomosis device

Also Published As

Publication number Publication date
DE1772869A1 (de) 1971-06-16
AT291764B (de) 1971-07-26
GB1211967A (en) 1970-11-11
FR2012958A1 (de) 1970-03-27

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